TUNEABLE ANTENNA SYSTEM WITH RECEIVER DIVERSITY

专利摘要:
Receiver Diversity Tunable Antenna System The present invention relates to a wireless electronic device that may include antenna structures and an antenna tuning circuit. the device may include a display mounted in a housing. a peripheral conductive member may run around the edges of the display and housing. Dielectric-filled spaces can divide the peripheral conductive member into individual segments. a ground plane can be formed in the housing. the ground plane and the peripheral conductive member segments can form antennas in the upper and lower portions of the housing. antenna tuning circuits may include switchable inductor circuits and variable capacitor circuits for the upper and lower antennas. the switchable inductor circuits associated with the upper antenna may be tuned for the provision of coverage in at least two lowband frequency bands of interest, wherein the variable capacitor circuits associated with the upper antenna may be tuned for the provision of coverage in at least two lowband frequency bands of interest.
公开号:BR102012008298B1
申请号:R102012008298-5
申请日:2012-03-02
公开日:2022-01-11
发明作者:Nanbo Jin；Mattia Pascolini；Matt A. Mow；Robert W. Schlub；Ruben Caballero
申请人:Apple Inc；
IPC主号:

专利说明:

This application claims priority to United States Patent Application No. 13/041,905, filed March 7, 2011, which is hereby incorporated by reference herein in its entirety. background
The present invention relates generally to wireless communications circuitry and, more particularly, to electronic devices having wireless communications circuitry.
Electronic devices, such as portable computers and cell phones, are often provided with wireless communications capabilities. For example, electronic devices may use long-range wireless communications circuits, such as cell phone circuits, to communicate using cell phone bands at 850 MHz, 900 MHz, 1800 MHz, 1900 MHz, and 2100 MHz. Electronic devices may use short-range wireless communications links to handle communications with nearby equipment. For example, electronic devices can communicate using WiFi® (IEEE 802.11) bands at 2.4 GHz and 5 GHz and the Bluetooth® band at 2.4 GHz.
To satisfy consumer demand for small form factor wireless devices, manufacturers are continually striving to implement wireless communications circuitry, such as antenna components, using compact structures. However, it can be difficult to adapt conventional antenna structures to small devices. For example, antennas that are confined to small volumes often exhibit narrower operating bandwidths than antennas that are implemented at larger volumes. If an antenna's bandwidth becomes too small, the antenna will not be able to cover all the communications bands of interest.
In view of these considerations, it would be desirable to provide improved wireless circuits for electronic devices. summary
Electronic devices may be provided that contain wireless communications circuitry. Wireless communications circuitry may include radio frequency transceiver circuitry and antenna structures. An electronic device may include a display mounted in a housing. A peripheral conductive member may run around the edges of the display and housing.
The peripheral conductive member can be divided into individual segments by forming spaces in the peripheral conductive member at various points along its length. The spaces may be filled with a dielectric, such as a plastic, and may form an open circuit between opposing portions of the conductive member. With an illustrative configuration, three spaces may be formed in the peripheral conductive member, for dividing the peripheral conductive member into three respective segments.
A conductive housing member, such as a conductive midplate member that spans the width of the housing, may be connected to the peripheral conductive member at the left and right edges of the display. The peripheral conductive member and other conductive structures, such as electrical components and printed circuits, can form a ground plane. The ground plane and peripheral conductive member segments can surround dielectric openings to form antenna structures. For example, an upper cell phone antenna can be formed at an upper end of the housing and a lower cell phone antenna can be formed at a lower end of the housing. In the upper cell phone antenna, a first dielectric opening may be surrounded by at least part of a first peripheral conductive member segment and ground plane portions. In the lower cell phone antenna, a second dielectric opening may be surrounded by at least part of a second peripheral conductive member segment and portions of the ground plane. The top cell phone antenna can be a two-branch inverted F antenna. The bottom cell phone antenna can be a loop antenna.
The upper and lower antennas may include associated antenna tuning circuitry. The antenna tuning circuit may include switchable inductor circuits that bridge the first and second peripheral conductive member segments to the ground plate, a tunable impedance matching circuit, and a variable capacitor circuit forming a bridge in each of the spaces in the peripheral conductive member. The tunable combination circuit can be used for coupling the radio frequency transceiver circuit to the lower and upper antennas.
During electronic device operation, the lower antenna can serve as the primary cellular antenna for the device. Radio frequency antenna signals can be transmitted and received by the lower antenna in cellular phone bands, such as the 750 MHz, 850 MHz, 900 MHz, 1800 MHz, 1900 MHz and 2100 MHz bands. The upper antenna can serve as a secondary antenna that allows the electronic device to implement receiver diversity. When the performance of the lower antenna drops during operation, the radio frequency transceiver circuit in the device may receive signals with the upper antenna instead of the lower antenna.
The top antenna can only support a subset of the bands that are supported by the bottom antenna. During the first antenna mode in which the switchable inductor associated with the upper antenna is deactivated and the variable capacitors associated with the upper antenna are tuned to exhibit a low capacitance value, the upper antenna can support a first low-band frequency range (for (e.g. a lowband region covering 850 MHz and 900 MHz) and a first highband frequency band (e.g. a highband region covering 1800 MHz and 1900 MHz). Top antenna coverage can be extended by tuning the antenna tuning circuit associated with the top antenna in real time.
For example, the top antenna can be configured in a second antenna mode in which the variable capacitors are tuned to exhibit higher capacitance values so that the top antenna can support a second low-band frequency band (e.g. example, a lowband region covering 750 MHz) that is lower in frequency than the first lowband frequency band. The top antenna can be configured in a third antenna mode, in which the switchable inductor is tuned so that the top antenna can support a second high-band frequency range (e.g., a high-band region covering 2100 MHz) which is higher in frequency than the first highband frequency band.
Other features of the invention, their nature and the various advantages will be more apparent from the accompanying drawings and the following detailed description of preferred embodiments. Brief Description of Drawings
Figure 1 is a perspective view of an illustrative electronic device with a wireless communications circuit in accordance with an embodiment of the present invention.
Figure 2 is a schematic diagram of an illustrative electronic device with a wireless communications circuit in accordance with an embodiment of the present invention.
Figure 3 is an end cross-sectional view of an illustrative electronic device with a wireless communications circuit in accordance with an embodiment of the present invention.
Figure 4 is an illustrative wireless circuit diagram including multiple antennas in accordance with an embodiment of the present invention.
Figures 5A and 5B are circuit diagrams showing an illustrative tunable impedance matching circuit of the type that may be used in connection with the wireless circuit of Figure 4 in accordance with an embodiment of the present invention.
Figure 6 is a diagram of an electronic device of the type shown in Figure 1, showing how antennas with an antenna tuning circuit can be formed in the device in accordance with an embodiment of the present invention.
Figures 7 to 9 are diagrams of an antenna of the type shown in the upper portion of the device of Figure 6 in accordance with an embodiment of the present invention.
Figure 10 is a graph showing how antennas of the type shown in Figure 6 can be used to cover communications bands of interest by tuning an associated antenna tuning circuit in accordance with an embodiment of the present invention.
Fig. 11 is a graph showing how the upper antenna of Fig. 6 can be tuned to cover multiple low-band frequency bands.
Figure 12 is a graph showing how the upper antenna of Figure 6 can be tuned to cover the multiple high-band frequency bands of interest in accordance with an embodiment of the present invention. Detailed Description
Electronic devices may be provided with a wireless communications circuit. The wireless communications circuit can be used to support wireless communications in multiple wireless communications bands. The wireless communications circuit may include one or more antennas.
The antennas may include loop antennas, inverted F antennas, ribbon antennas, flat F antennas, slotted antennas, hybrid antennas that include antenna structures of more than one type, or other suitable antennas. Conductive structures for the antennas, if desired, can be formed from conductive electronic device structures. Conductive electronic device structures may include conductive housing structures. The housing structures may include a peripheral conductive member. The peripheral conductive member can serve as a bevel for a flat structure, such as a display, can serve as sidewall structures for a device housing, or can form other housing structures. Spaces in the peripheral conductive member can be associated with antennas.
An illustrative electronic device of the type that may be provided with one or more antennas is shown in Figure 1. The electronic device 10 may be a portable electronic device or other suitable electronic device. For example, electronic device 10 may be a laptop computer, a tablet computer, a somewhat smaller device such as a wristwatch device, a pendant device, a headset device, an earpiece, or other wearable device. or in miniature, a cell phone, a media player, etc.
Device 10 includes a housing, such as housing 12. Housing 12 which may sometimes be referred to as a housing may be formed of any suitable materials, including plastic, glass, ceramic, composite fibers, metal (e.g. steel, stainless steel, aluminum, etc.), other suitable materials, or a combination of these materials. In some situations, housing parts 12 may be formed from a dielectric or other material of low conductivity. In other situations, housing 12 or at least some of the structures constituting housing 12 may be formed from metal elements.
Device 10, if desired, may have a display, such as display 14. Display 14 may be, for example, a touch screen incorporating capacitive touch electrodes. Display 14 may include image pixels formed from light-emitting diodes (LEDs), organic LEDs (OLEDs), plasma cells, electronic ink elements, liquid crystal display (LCD) components, or other pixel structures. appropriate image. A layer of cover glass may cover the surface of display 14. Buttons, like button 19, may pass through openings in cover glass.
Housing 12 may include structures, such as peripheral member 16. Member 16 may run around the rectangular periphery of device 10 and display 14. Member 16 or part of member 16 may serve as a bevel for display 14 ( for example, a cosmetic bias that encircles all four sides of the display 14 and/or helps to hold the display 14 in the device 10). Member 16, if desired, can also form sidewall structures for device 10.
Member 16 may be formed of a conductive material and therefore may sometimes be referred to as a peripheral conductive member or conductive housing structures. Member 16 may be formed from a metal, such as stainless steel, aluminum or other suitable materials. One, two, or more than two separate structures may be used in forming member 16. In a typical configuration, member 16 may have a thickness (TT dimension) of around 0.1 mm to 3 mm (as an example) . The sidewall portions of member 16 may be substantially vertical (parallel to the vertical axis V). Parallel to the vertical axis V, member 16 may have a dimension TZ of around 1 mm to 2 cm (as an example). The 16-member aspect ratio R (i.e., the R ratio of TZ to TT) is typically greater than 1 (i.e., R can be greater than or equal to 1, greater than or equal to 2, greater than than or equal to 4, greater than or equal to 10, etc.).
It is not necessary for member 16 to have a uniform cross section. For example, the top portion of member 16, if desired, may have an inwardly projecting ferrule that helps hold the visor 14 in place. If desired, the bottom portion of member 16 may also have an enlarged ferrule (e.g., in the plane of the rear surface of device 10). In the example of Figure 1, the member 16 has substantially straight vertical side walls. This is merely illustrative. The side walls of member 16 may be curved or may be of any other suitable shape. In some configurations (e.g., when member 16 serves as a bevel for display 14), member 16 may run around housing ferrule 12 (i.e., member 16 may cover only housing edge 12 that surrounds the display 14 and not the housing rear edge 12 of the housing side walls 12).
Display 14 may include conductive structures, such as an array of capacitive electrodes, conductive lines for addressing pixel elements, driver circuitry, etc. Housing 12 also includes internal structures, such as metal frame members, a flat housing member (sometimes referred to as a midplate) that covers housing walls 12 (i.e., the substantially rectangular member that is welded or connected otherwise between opposite sides of member 16), printed circuit boards and other internal conductive structures. These conductive structures may be located in the CN center of housing 12 (as an example).
In regions 22 and 20, apertures may be formed between the conductive housing structures and the electrically conductive components that make up the device 10. These apertures may be filled with air, plastic, or other dielectrics. The conductive housing structures and other conductive structures in the CN region of device 10 can serve as a ground plane for the antennas in the device 10. The openings in the regions 20 and 22 can serve as slots in open or closed slotted antennas, can serve as a region of central dielectric that is surrounded by a conductive path of materials in a loop antenna, can serve as a space separating an antenna resonant element, such as a ribbon antenna resonant element or an antenna resonant element in F inverted from the ground plane, or otherwise may serve as part of antenna structures formed in regions 20 and 22.
The member portions 16 may be provided with space structures. For example, member 16 may be provided with one or more spaces, such as spaces 18A, 18B, 18C and 18D, as shown in Figure 1. The spaces may be filled with a dielectric, such as a polymer, a ceramic, a glass, &c. Spaces 18A, 18B, 18C and 18D may divide member 16 into one or more peripheral conductive member segments. These can be, for example, two 16 member segments (e.g. in a two-space array), three 16 member segments (e.g. in a three-space array), four 16 member segments (e.g., in an array with four spaces, etc.). The peripheral conductive member segments 16 that are formed in this way can form antenna parts on the device 10.
In a typical scenario, device 10 might have top and bottom antennas (as an example). An upper antenna, for example, may be formed at the upper end of device 10 in region 22. A lower antenna, for example, may be formed at the lower end of device 10 in region 20. The antennas may be used separately for coverage of separate communications bands of interest, or they can be used together to implement an antenna diversity scheme or a multiple-input multiple-output (MIMO) antenna scheme.
The antennas on device 10 can be used to support any communications bands of interest. For example, device 10 may include antenna structures to support local area network communications, cellular voice and data communications, global positioning system (GPS) communications or other satellite navigation system components, communications via Bluetooth®, etc.
A schematic diagram of electronic device 10 is shown in Figure 2. As shown in Figure 2, portable device 10 may include storage and processing circuitry 28. Storage and processing circuitry 28 may include storage, such as a storage on a hard disk drive, non-volatile memory (for example, flash memory or other electrically programmable read-only memory configured to form a solid-state drive), volatile memory (for example, access memory static or dynamic random), etc. A processing circuit in the storage and processing circuit 28 may be used to control the operation of the device 10. This processing circuit may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors. , power management units, encoder - audio decoder chips, application-specific integrated circuits, etc.
The storage and processing circuit 28 may be used to run software on the device 10, such as web browsing applications, voice internet protocol (VoIP) phone call applications, email applications, media execution, operating system functions, etc. To support interactions with external equipment, the storage and processing circuit 28 can be used in implementing communications protocols. Communications protocols that can be implemented using the storage and processing circuit 28 include internet protocols, wireless local area network protocols (e.g. 802.11 protocols - sometimes referred to as WiFi®), protocols for other short-range wireless communications links, such as Bluetooth® protocol, cell phone protocols, etc.
Circuit 28 may be configured to implement control algorithms that control the use of antennas on device 10. For example, to support antenna diversity schemes and MIMO schemes or other multiple antenna schemes, circuit 28 may perform signal quality monitoring operations, sensor monitoring operations, and other data accumulation operations and, in response to the accumulated data, can control which antenna structures on device 10 are being used for receiving and processing data . As an example, circuit 28 can control which of two or more antennas are being used for receiving incoming radio frequency signals, can control which of two or more antennas are being used for transmitting radio frequency signals, can control the routing process of data streams entering through two or more antennas in device 10 in parallel, etc. In carrying out these control operations, circuit 28 can open and close switches, can activate and deactivate receivers and transmitters, can adjust impedance matching circuits, can configure switches in front end module (FEM) radio frequency circuits. ) that are interposed between a radio frequency transceiver circuit and antenna structures (e.g. filtering and switching circuits used for impedance matching and signal routing), and may otherwise control and adjust the components of the device 10.
Input-output circuit 30 can be used to allow data to be suppressed to device 10 and to allow data to be provided from device 10 to external devices. Input-output circuit 30 may include input-output 32 devices. Input-output devices 32 may include touch screens and other user input interface are examples of input-output circuit 32. Input devices - output 32 can also include input devices - output such as buttons, joysticks, click wheels, scroll wheels, touchpads, mini-keyboards, keyboards, microphones, speakers, tone generators, vibrators, cameras, sensors, diodes light emission and other status indicators, data ports, etc. A user can control the operation of device 10 by supplying commands through input-output devices 32 and can receive status information from device 10 using the output capabilities of input-output devices 32.
Wireless communications circuit 34 may include a radio frequency (RF) transceiver circuit from one or more integrated circuits, an operating environment circuit, low noise input amplifiers, passive RF components, one or more more antennas, and other circuitry to handle wireless RF signals. Wireless signals can also be sent using light (for example, using infrared communications).
Wireless communications circuit 34 may include navigation satellite system receiver circuit, such as global positioning system (GPS) receiver circuit 35 (e.g., for receiving satellite positioning signals at 1575 MHz ). Transceiver circuit 36 can handle the 2.4 GHz and 5 GHz bands for WiFi® (IEEE 802.11) communications and can handle the 2.4 GHz Bluetooth® communications band. Circuit 34 can use the circuit cell phone transceiver 38 to handle wireless communications in cell phone bands, such as the 700 MHz, 710 MHz, 750 MHz, 850 MHz, 900 MHz, 1800 MHz, 1900 MHz, and 2100 MHz bands, or others cell phone bands of interest.
Wireless communications circuit 34 may include circuitry for other short-range and long-range wireless links, if desired. For example, wireless communications circuit 34 may include global positioning system (GPS) receiving equipment, wireless circuit for receiving radio and television signals, radio calling circuitry, etc. On WiFi® and Bluetooth links and other short-range wireless links, wireless signals are typically used to transport data over tens or hundreds of feet (1 ft = 0.3048 m). On cellular phone links and other long-range links, wireless signals are typically used to transport data over thousands of feet or miles (1 foot = 0.3048 m; 1 mile = 1609 km).
Wireless communications circuit 34 may include antennas 40. Antennas 40 may be formed using any suitable antenna types. For example, antennas 40 may include antennas with resonant elements that are formed from a loop antenna structure, patch antenna structures, inverted-F antenna structures, open and closed slot antenna structures, antenna structures Inverted F flats, helical antenna structures, ribbon antennas, monopole, dipoles, hybrids of these designs, etc. Different antenna types can be used for different bands and band combinations. For example, one type of antenna may be used to form a local wireless link antenna and another type of antenna may be used to form a remote wireless link.
A cross-sectional side view of the device 10 of Figure 1, taken along line 24-24 in Figure 1 and viewed in the direction 26 is shown in Figure 3. As shown in Figure 3, the display 14 can be mounted on the front surface of device 10. Housing 12 can include side walls formed from member 16 and one or more back walls formed from structures, such as a flat rear housing structure 42. Structure 42 can be formed from a dielectric , such as a glass, a ceramic, a plastic, or of metals or other suitable materials (e.g. fiber composites). Brackets, clips, screws, adhesives and other structures can be used to assemble the housing parts 12 together.
Device 10 may contain printed circuit boards, such as printed circuit board 46. Printed circuit board 46 and other printed circuit boards in device 10 may be formed from rigid printed circuit board material ( e.g. fiberglass filled epoxide) or flexible sheets of material such as polymers. Flexible printed circuit boards ("flexible circuits") can be formed, for example, from flexible polyimide sheets.
The printed circuit board 46 may contain interconnects, such as the interconnects 48. The interconnects 48 may be formed from conductive traces (e.g., traces of gold plated copper or other metals). Connectors, such as connector 50, can be connected to interconnects 48 using solder or a conductive adhesive (as examples). Integrated circuits, discrete components such as resistors, capacitors, and inductors, and other electronic components can be mounted on the printed circuit board 46.
The antennas on the device 10, such as the illustrative antenna 40 of Figure 3, may have antenna feed terminals. For example, each antenna 40 on device 10 may have a positive antenna power terminal, such as positive antenna power terminal 58, and a ground antenna power terminal, such as a ground antenna power terminal. 54. As shown in the illustrative arrangement of Figure 3, a transmission line path, such as a coaxial cable 52, may be coupled between antenna feed formed from terminals 58 and 54 and a transceiver circuit in components 44 via connector 50 and interconnects 48. Components 44 may include one or more integrated circuits for implementing the wireless circuit 34 of Figure 2 (e.g., receiver 35 and transceiver circuits 36 and 38).
Connectors, such as connector 50, may be used in coupling transmission lines in device 10 to printed circuit boards, such as board 46. Connector 50 may be, for example, a coaxial cable connector that is connected to the printed circuit board 46 using a solder (as an example). Cable 52 may be a coaxial cable or other transmission line. Examples of transmission lines that can be used in device 10 include coaxial cables, microstrip and ribbon line transmission lines formed from a flexible circuit or a rigid printed circuit board, transmission lines that are formed from of multiple transmission line structures such as these, etc.
When coupled to the antenna feed 40, the transmission line 52 can be used for the transmission and reception of radio frequency signals using the antenna 40. As shown in Figure 3, the terminal 58 can be coupled to the center of coaxial cable 56. Terminal 54 may be connected to a grounding conductor in cable 52 (eg, an outer stranded conductor). Other arrangements may be used for coupling transceivers at device 10 to antenna 40, if desired. For example, impedance matching circuits can be used in coupling a transceiver circuit to antenna structures. The arrangement of figure 3 is merely illustrative.
In the illustrative example of Figure 3, device 10 includes antenna 40. To improve signal quality and to cover multiple bands of interest, device 10 may contain multiple antennas. With a suitable arrangement, which is sometimes described here as an example, a WiFi® antenna can be located in region 22, a first cell phone antenna (e.g. a primary) can be located in region 20, and a second cell phone antenna (e.g. a secondary) can be located in region 22. The second cell phone antenna, if desired, can be configured to receive GPS signals. Illustrative wireless circuit 34 that includes such an antenna array is shown in Figure 4.
As shown in Figure 4, wireless circuit 34 may have input-output ports such as ports 100 and 130 to interface with digital data circuits on storage and processing circuit 28. Wireless circuit 34 may include one or more integrated circuits for implementing transceiver circuitry, such as a baseband processor 102 and a cell phone transceiver circuit 38. Port 100 may receive digital data from the storage and storage circuitry. processing 28 for transmission by antenna 40L. Incoming data that has been received by antennas 40U and 40L, cellular transceiver circuit 38, and baseband processor 102 may be supplied to storage and processing circuit 28 through port 100. Port 130 may be used to handle digital data associated with transmitted and received wireless local area network signals, such as WiFi® signals (as an example). Output digital data that is supplied to port 130 by storage and processing circuit 28 may be transmitted using wireless local area network transceiver circuit 36, paths such as path 128, and one or more antennas, such as the 40WF antenna. During data reception operations, signals received by antenna 40WF may be provided to transceiver 36 via path 128. Transceiver 36 may convert incoming signals into digital data. Digital data can be provided to storage and processing circuit 28 via port 130. If desired, local signals, such as Bluetooth® signals, can also be transmitted and received via antennas, such as antenna 40WF.
Transceiver circuit 38 may include one or more transmitters and one or more receivers. In the example of Figure 4, transceiver circuitry 38 includes a radio frequency transmitter 104 and radio frequency receivers 110. Transmitter 104 and receivers 110 (i.e., receiver RX1 and receiver RX2) can be used to dealing with cell phone communications. Signals that are received by transmitter 104 via path 118 may be supplied to power amplifier 106 by transmitter 104. Power amplifier 106 may boost these output signals for transmission by antenna 40L. Incoming signals that are received by antenna 40L can be amplified by low noise amplifier 112 and provided to receiver RX1. Receiver RX1 may provide data received from antenna 40U to processor 102 via path 118. Incoming signals that are received by antenna 40U may be amplified by low noise amplifier 124 and provided to receiver RX2 (or to RX1 using a switch). Receiver RX2 may provide data received from antenna 40L to processor 102 via path 118. Circuitry such as transmitter 104 and receivers 110 may each have multiple ports (e.g., to handle with different respective communications bands) and can be implemented using one or more individual integrated circuits.
Antennas 40U and 40L may be coupled to the transceiver circuit 38 using circuitry such as an impedance matching circuit, filters and switches. This circuit, which is sometimes referred to as a front end module (FEM) circuit, can be controlled by the storage and processing circuitry in device 10 (e.g., control signals from a processor such as as the baseband processor 102). As shown in the example of Figure 4, the front end circuit in the wireless circuit 34 may include an impedance matching circuit 108, such as a tunable combination circuit M1 and a tunable combination circuit M2. Tunable combination circuits M1 and M2 can be formed using conductive structures with associated values of capacitance, resistance, and inductance, and/or discrete components such as inductors, capacitors, and resistors that form circuits for combining the impedances of the circuit. transceiver 38 and antennas 40U and 40L. Combination circuit M1 may be coupled between wireless transceiver circuit 38 (including associated amplifier circuits 106 and 112) and antenna 40L. Combination circuit M2 may be coupled between transceiver circuit 38 (and associated amplifier 124) and antenna 40U using paths such as paths 132 and 122.
The M1 and M2 combination circuits can be fixed or adjustable. For example, combination circuit M1 can be fixed and combination circuit M2 can be adjustable. As another example, the combination circuit M1 can be adjustable and the combination circuit M2 can be fixed. As another example, the M1 and M2 combination circuits can both be adjustable. In this type of configuration, a control circuit, such as the baseband processor 102, can output control signals, such as the SELECT1 signal on path 117 for the tunable combination circuit configuration M1, and can output control signals, such as as signal SELECT2 on path 116 for configuring the tunable combination circuit M2.
Combination circuit M1 can be placed in a first configuration when SELECT1 has a first value, and can be placed in a second configuration when SELECT1 has a second value. The M1 combination circuit state can serve to fine-tune the coverage provided by the antenna 40L. Similarly, the combination circuit M2 can be placed in a first configuration, when SELECT2 has a first value, and can be placed in a second configuration, when SELECT2 has a second value. The M2 combination circuit state can serve to fine tune the coverage provided by the 40U antenna. M1 and M2 combination circuits may or may not be used. By using such an antenna tuning scheme, the 40L and 40U antennas may be able to cover a wider range of communications frequencies than would otherwise be possible. The use of tuning for 40l_ and 40U antennas can allow a relatively narrow bandwidth (and potentially compact) design to be used for the 40L and 40U antennas, if desired.
Control signals may be provided to receiver circuit 110 via path 119 so that wireless circuit 34 may selectively activate one or both of the receivers RX1 and RX2, or may otherwise select which antenna signals are being received in real time (e.g., by controlling a multiplexer in circuit 34 that routes signals from a selected antenna from the antennas to a shared receiver so that the receiver can be shared between antennas). For example, baseband processor 102 or other storage and processing circuitry in device 10 can monitor a signal quality (bit error rate, signal-to-noise ratio, frame error rate, signal strength, etc.). ) for signals being received by the 40U and 40L antennas. Based on real-time signal quality information or other data (e.g. sensor data indicating that a particular antenna is blocked), signals on path 119 or other suitable control signals can be adjusted so that a optimal receiver circuit (for example, an RX1 or RX2 receiver) is used for receiving input signals. Antenna diversity schemes such as these in which circuit 34 selects an optimal antenna and receiver for use in real time based on signal quality measurements or other information while radio frequency signals are transmitted by an antenna and a transmitter (i.e., antenna 40L and transmitter 104) can sometimes be referred to as receiver diversity schemes.
In a receiver diversity configuration (that is, in a device without a transmitter diversity), the radio frequency transmitter circuit in a device is configured to receive signals through two or more different antennas, so that one antenna optimal can be chosen in real time to improve signal reception, while the radio frequency transceiver circuit is configured to transmit signals through only one of the antennas and not others. If desired, a wireless circuit 34 can be configured to implement receiver and transmitter diversity and/or can be configured to handle multiple simultaneous data streams (for example, using a MIMO arrangement). The use of a wireless circuit 34 for implementing a receiver diversity scheme while using a dedicated antenna to handle transmitted signals is merely illustrative.
As shown in Figure 4, a wireless circuit 34 may be provided with a filter circuit, such as a filter circuit 126. Circuit 126 may route signals by frequency so that cellular phone signals are carried between antenna 40U and receiver RX2, while GPS signals that are received by antenna 40U are routed to GPS receiver 35.
An illustrative configurable circuit that can be used to implement an M1 combination circuit is shown in Figure 5A. As shown in Fig. 5A, a combination circuit M1 can have switches, such as switches 134 and 136. Switches 134 and 136 can have multiple positions (shown by illustrative positions A and B in Fig. 5A). When the SELECT1 signal has a first value, switches 134 and 136 can be set to their A positions and the MA combination circuit can be switched for use (as shown in Figure 5A), so that an MA combination circuit is electrically coupled between paths 120 and amplifiers 106 and 112. When signal SELECT1 has a second value, switches 134 and 136 can be set to their B positions.
An illustrative configurable circuit that can be used to implement the M2 combination circuit is shown in Figure 5B. As shown in Fig. 5B, the combination circuit M2 may have switches, such as switches 134 and 136. Switches 134 and 136 can have multiple positions (shown by illustrative positions A and B in Fig. 5B). When the SELECT2 signal has a first value, switches 134 and 136 can be set to their A positions, and the MA combination circuit can be switched for use. When the SELECT2 signal has a second value, switches 134 and 136 can be set to their B positions (as shown in Figure 5B), so that an MB combination circuit is electrically coupled between paths 122 and 132.
Figure 6 is a top view of the interior of device 10 showing how antennas 40L, 40U and 40WF can be implemented in housing 12. As shown in Figure 6, a ground plane G can be formed in housing 12. G ground can form an antenna ground for 40L, 40U and 40WF antennas. Because the G-plane can serve as an antenna ground, the G-ground plane can sometimes be referred to as an antenna ground, a ground, or a ground plane element (as examples).
In the central portion C of device 10, the ground plane G may be formed by conductive structures, such as a conductive housing middle plate member which is connected between the left and right edges of member 16, printed circuit boards with traces of conductive grounding, etc. At the ends 22 and 20 of device 10, the shape of the ground plane G can be determined by the shapes and locations of conductive structures that are connected to the ground. Examples of conductive structures that may overlap to form the G ground plane include housing structures (e.g. a conductive housing mid-plate structure, which may have projecting portions), conductive components (e.g. switches, cameras, data connectors, printed circuits, such as flexible circuits and rigid printed circuit boards, radio frequency shielding boxes, buttons, such as the button 144 and the conductive button mounting frame 146), and other conductive structures in the device 10. In the illustrative layout of figure 6, the portions of device 10 that are conductive and connected to ground for forming the ground plane G are shaded and contiguous with the central portion C.
Apertures, such as apertures 72 and 140, may be formed between the ground plane G and respective peripheral conductive member portions 16. The apertures 72 and 140 may be filled with air, plastic, and other dielectrics. Aperture 72 can be associated with antenna structure 40L, while opening 140 can be associated with antenna structures 40U and 40WF.
Spaces such as spaces 18B, 18C and 18D may be present in peripheral conductive member 16 (space 18A of figure 1 may be absent or may be implemented using a phantom space structure that cosmetically looks like a space from from the outside of the device 10, but which is electrically shorted inside the housing 12, so that no gap is electrically present at the location of the gap 18A). The presence of spaces 18B, 18C and 18D can divide the peripheral conductive member 16 into segments. As shown in Figure 6, the peripheral conductive member 16 may include a first segment 16-1, a second segment 16-2 and a third segment 16-3.
The lower antenna 40L may be formed using a parallel feed loop antenna which has a shape that is at least partially determined by the shape of the lower ground plane portions G and the conductive housing segment 16-3. As shown in Figure 6, antenna 40L may be formed in the lower region 20 of device 10. The conductive segment portion 16-3 surrounding aperture 72 and ground plane portions G lying along the edge GE of plane ground connections G form a conductive loop around aperture 72. The shape of aperture 72 can be dictated by the placement of conductive structures in region 20, such as a microphone, flexible circuit traces, a data port connector, buttons, a speaker, etc.
The conductive structure 202 may bridge the dielectric opening 72, and may be used to electrically short the ground plane G to the peripheral housing segment 16-3. Conductive structure 202 may be formed using strips of conductive material, flexible circuit traces, conductive housing structures, or other conductive structures. If desired, the conductive structure 202 can be formed using discrete components, such as surface mount technology (SMT) inductors. The 52-1 transmission line (eg, a coaxial cable) can be used to power the 40L antenna at positive and negative antenna power terminals 58-1 and 54-1, respectively.
Antenna 40L may include associated (configurable) tunable antenna circuit, such as switchable inductor circuit 210, tunable impedance matching circuit M1, variable capacitor circuit 212, and other suitable tunable circuitry. The tunable antenna circuitry associated with the 40L antenna may allow, for example, the 40L antenna to operate in at least six wireless communications bands (for example, for transmitting and receiving 750 MHz, 800 MHz, 900 MHz, 1800 MHz, 1900 MHz, 2100 MHz, etc.).
Conductive structure 202 may have a first inductive segment SG and a second inductive segment SG' formed in series between peripheral segment 16-3 and ground G. Segment SG may exhibit a first inductance, segment SG' may exhibit a second inductance, and circuit 202 may exhibit a third inductance. Switchable inductor circuit (also referred to as tunable inductor circuit, configurable inductor circuit, or adjustable inductor circuit) 210 may be coupled between a point at which segments SG and SG' are joined and a corresponding point 101 on the edge of GE ground plan.
When circuit 210 is switched for use (e.g., when circuit 210 is activated), segment SG and circuit 210 collectively form a first transmission line path that bridges the antenna feeds of antenna 40L. The first transmission line path may have an inductance that is equal to the series inductance of the first and third inductances.
When circuit 210 is switched out of use (e.g., when circuit 210 is deactivated), segments SG and SG' may collectively form a second transmission line path that bridges the antenna feeds of antenna 40L. The second transmission line path may have an inductance that is equal to the series inductance of the first and second inductances. Switchable inductor 210 is for tapping a portion of the second transmission line path so that the inductance associated with the first transmission line path when circuit 210 is activated is less than the inductance associated with the second path. transmission line when circuit 210 is deactivated.
The first transmission line inductance (i.e., the inductance of the first transmission line path) may be different from the second transmission line inductance (i.e., the inductance of the second transmission line path). The first transmission line inductance can be equal to 18 nH, while the second transmission line inductance can be equal to 20 nH (as an example). The first transmission line path (if circuit 210 is enabled) and second transmission line path (if circuit 210 is disabled) are connected in parallel between supply terminals 54-1 and 58-1 and serve as parallel inductive tuning elements for the 40L antenna. The first and second transmission line paths may therefore sometimes be referred to as a variable inductor. The inductance of the SG and SG' segments is carefully chosen to provide the desired bandwidth coverage.
The tunable impedance matching circuit M1 can be coupled between coaxial cable 52-1 and positive supply terminal 58-1. The M1 impedance matching circuit can be formed using a switching circuit of the type described in relation to figure 5A, conductive structures with associated capacitance, resistance and inductance values and/or discrete components such as inductors, capacitors and resistors, which form circuits for matching the circuit impedances of transceiver 38 and antenna 40L.
A variable capacitor circuit (sometimes referred to as a varator circuit, a tunable capacitor circuit, an adjustable capacitor circuit, etc.) 212 may be coupled between opposite ends of the bevel space 18B. A baseband processor 102 can output a control voltage VtuneB to the fine-tuning varator 212 so that the antenna 40L operates at the desired frequencies.
Bevel space 18B, for example, may have an intrinsic capacitance of 1 pF (eg, an inherent capacitance value formed by the parallel conductive surfaces in space 18B). Component 212 can be, for example, a continuously variable capacitor, a semicontinuously adjustable capacitor having two to four or more different capacitance values that can be coupled in parallel to intrinsic capacitance. If desired, component 212 can be a continuously variable inductor or a semicontinuously adjustable inductor having two or more different inductance values.
Antenna 40WF may have an antenna resonant element formed from a strip of conductor, such as a strip 142. Strip 142 may be formed from a trace in a flexible circuit, from a trace in a flexible circuit , from a trace on a rigid printed circuit board from a strip of metal foil, or from other conductive structures. Antenna 40WF can be powered by transmission line 52-2 (see, for example, path 128 of figure 4) using antenna power terminals 58-2 and 54-2.
Antenna 40U may include associated (configurable) tunable antenna circuit, such as switchable inductor circuit 210', tunable impedance matching circuit M2, variable capacitor circuits 212-1 and 212-2, and other circuitry. suitable tuners. The tunable antenna circuit associated with the 40U antenna can allow the 40U antenna to have wider coverage than otherwise possible.
The 40U antenna can be a two-branch inverted F antenna. Transmission line 52-3 (see, for example, path 120 of figure 4) can be used to feed antenna 40U at antenna feed terminals 58-3 and 54-3. Conductive structure 150 may be a bridge dielectric gap 140 and may be used to electrically short the ground plane G to peripheral housing member 16. Conductive structure 148 and combination circuit M2 may be used for connection from antenna power terminal 58-3 to peripheral conductive member 16 at 152. Conductive structures, such as structures 148 and 150, may be formed by flexible circuit traces, conductive housing structures, springs, screws, or other structures conductive.
Peripheral conductive segment 16-1 can form antenna resonance element arms for antenna 40U. In particular, a first segment portion 16-1 (having arm length LBA) may extend from point 152 (where segment 16-1 is fed) to the end of segment 16-1 which is defined by the space 18C, and a second segment portion 16-1 (having an arm length HBA) may extend from point 152 to the opposite end of segment 16-1 which is defined by space 18D. The first and second segment portions 16-1 may form respective branches of an inverted F antenna and may be associated with respective low band (LB) and high band (HB) antenna resonances for antenna 40U.
A switchable inductor circuit 210' may be coupled in parallel with frames 148 and 150 between segment 16-1 and the ground plane G. Circuit 210' may be coupled to the right of frame 150 (as shown in Figure 6 when the device 10 is viewed from the top) or may be coupled to the left of frame 150. Circuit 210' may serve to provide wider high-band coverage for antenna 40U. Antenna 40U can operate in a first highband region when circuit 210' is switched out of use, whereas antenna 40U can operate in a second highband region that is higher in frequency than the first region. bandwidth when circuit 210' is switched for use. For example, antenna 40U can be used to receive signals in the 1900 MHz band when circuit 210' is deactivated and in the 2100 MHz band when circuit 210' is activated.
Variable capacitor circuit 212-1 may be coupled between opposite ends of conductive bevel space 18C, while variable capacitor circuit 212-2 may be coupled between opposite ends of bevel space 18D. Circuit 212-2 does not need to be formed if desired. Varators 212-1 and 212-2 can be formed using integrated circuits, one or more discrete components (e.g. SMT components), etc.
Variable capacitor 212-1 can serve to provide low band coverage for the 40U antenna. The baseband processor 102 may output an emission control voltage VtuneC to tune the varator 212-1 to configure the antenna 40U for operation in the first and second lowband regions. For example, the 40U antenna can be used to receive signals in the 850 MHz band, when the varator 212-1 is tuned to exhibit a low capacitance value (e.g., less than 0.1 pF) and receive signals in the 212-1 band. 750 MHz band, when the varator 212-1 is tuned to exhibit a high capacitance value (eg, greater than 0.2 pF).
For example, bevel spaces 18C and 18D may each have an intrinsic capacitance of 1.0 pF (eg, an inherent capacitance value formed by the parallel conductive surfaces in spaces 18C and 18D). The varactors 212-1 and 212-2 can be, for example, continuously variable capacitors, semi-continuously adjustable capacitors that have two to four or more different capacitance values that can be coupled in parallel to the intrinsic capacitance.
Figure 7 shows a 40U antenna circuit diagram. As shown is a circuit diagram of the 40U antenna. As shown in figure 7, the capacitances Cc and CD can be assigned to spaces 18C and 18D respectively. The capacitance Cc can represent an aggregate capacitance that includes the parasitic capacitance of space 18C and varator 212-2, while the capacitance CD can represent a parasitic capacitance of space 18D and varator 212-2. Ground plane G can form antenna ground. The short-circuit branch 150 may form a leg connecting the peripheral conductive member segment 16-1 to ground G to facilitate an impedance match between the antenna feed (formed from the feed terminals 58-3 and 54- 3) and the 40U antenna. The short-circuit branch 150 may have an associated inductance Ls.
Antenna 40U may be operable in a first highband mode (e.g. a mode covering the 1900 MHz band) when circuit 210' is switched out of use, and a second highband mode (e.g. , a mode that covers the 2100 MHz band), when circuit 210' is switched for use. Fig. 7 shows a suitable circuit implementation of switchable inductor circuit 210'. As shown in Figure 7, circuit 210 includes a switch SW and an inductive element 214 coupled in series. The SW switch can be implemented using a pin diode, a gallium arsenide field effect transistor (FET), a microelectromechanical systems (MEM) switch, a high electron mobility field effect transistor ( MOSFET), a high electron mobility transistor (HEMT), a pseudomorphic HEMT (PHEMT), a transistor formed on a silicon substrate on insulator (SOI), etc.
The inductive element 214 may be formed from one or more electrical components. Components that can be used as all or part of the 214 element include inductors and capacitors. The desired inductances and capacitances for the 214 element can be formed using integrated circuits, using discrete components (eg, a surface mount technology inductor), and/or using dielectric and conductive structures. that are not part of a discrete component or an integrated circuit. For example, a capacitance can be formed by spacing two conductive shims close to each other, which are separated by a dielectric, and an inductance can be formed by creating a conductive path (e.g., a transmission line) on a plate. of printed circuit.
In another suitable arrangement, configurable inductor circuit 209 can be used to form a short path for antenna 40U (i.e., short frame 150 and circuit 210' of Fig. 7 are not formed). As shown in Figure 8, circuit 209 may include inductors 214 and 216 coupled between conductive segment 16-1 and switch 218. Switch 218 may have multiple positions (shown by illustrative positions A and B). The switch 218 may be placed in its position A for coupling the inductor 214 between the antenna feeds (e.g., between the positive and negative terminals 58-3 and 54-3) during the second highband mode, and may be placed in its position B for the coupled inductor 216 between the antenna feeds during the first highband mode. Inductor 216 may have an inductance value that is approximately equal to Ls (Figure 8), as an example.
In another suitable arrangement, configurable inductor circuit 211 may be used to form a short path for antenna 40U (i.e., short frame 150 and circuit 210' of Fig. 7 are not formed). As shown in Figure 9, circuit 211 may include inductor 214 and the first switch SW coupled in series between segment 16-1 and ground G and may include inductor 216 and second switch SW coupled in series between segment 16 -1 and the G ground. During the first highband mode, the first SW switch may be open and the second SW switch may be closed for the electrical connection of the inductor 216 between the antenna supply terminals. During the second high-band mode, the second switch SW can be disabled and the first switch can be enabled to electrically connect the inductor 214 between the antenna feed terminals.
Figures 7 to 9 are merely illustrative. If desired, the 40U antenna can include more than two inductive branches to support wireless coverage in more than two low-band regions.
The 40L antenna can cover at least six transmit and receive communications bands (eg, 700 MHz, 850 MHz, 900 MHz, 1800 MHz, 1900 MHz, and 2100 MHz), as shown in the table in Figure 10. The antenna 40U can be configured to cover a subset of these six illustrative communications bands. For example, the 40U antenna can be configured to cover three reception bands of interest and, with tuning, six reception bands of interest.
Antenna 40U may be configured in a first mode of operation, in which the capacitor 212-1 is tuned to provide a first capacitance value and in which the inductor circuit 210' is deactivated. In the first mode of operation (see, for example, the 250 line in figure 10), the 40U antenna may be able to cover the 850 RX reception bands (the 850 MHz reception band), 900 RX (the 850 MHz reception band). 900 MHz), 1800 RX (the 1800 MHz receive band), 1900 RX (the 1900 MHz receive band), and any other communications bands of interest.
Antenna 40U may be configured in a second mode of operation, in which capacitor 212-1 is tuned to provide a second capacitance value that is higher than the first capacitance value and in which inductor circuit 210' is off. In the second mode of operation (see, for example, line 252 in figure 10), the 40U antenna may be able to cover the 750 RX reception bands (the 750 MHz reception band), 1800 RX, 1900 RX and other communications bands of interest.
The modes described in relation to Figure 10 are merely illustrative. If desired, circuit 210' can be activated/deactivated and capacitor 212-1 can be tuned to provide adequate capacitance to cover the high-band and low-band frequency ranges of interest. If desired, the 40U antenna can also be used for transmitting radio frequency signals in the indicated bands.
By using antenna tuning schemes of the type described in connection with Figures 4 to 10, the 40L and 40U antennas may be able to cover a wider range of communications frequencies than would otherwise be possible. A graph of standing wave ratio (SWR) versus frequency, such as the SWR graph of Figure 11, illustrates a low-band tuning capability for the 40U antenna. As shown in Figure 11, the continuous SWR frequency characteristic curve 300 corresponds to a first antenna tuning mode, in which the antenna 40U of the device 10 exhibits satisfactory resonant peaks of low band frequency f1 (for bandwidth coverage). 850 MHz) and a highband frequency f2 (e.g. for 1900 MHz band coverage). In the first antenna tuning mode, the variable capacitor circuit 212-1 can be tuned to a first capacitance, while the switchable inductor circuit 210' is deactivated.
The dashed SWR frequency characteristic curve 302 corresponds to a second antenna tuning mode in which the antennas of the device 10 exhibit satisfactory resonant peaks at a low band frequency fT (for 750 MHz band coverage) and at the frequency of high band f2. In the second antenna tuning mode, a variable capacitor circuit 212-1 can be tuned to a second capacitance that is greater than the first capacitance to shift the wireless coverage from frequency f1 to f1'.
Figure 12 illustrates antenna 40U operating in a third antenna tuning mode. As shown in Figure 12, the dashed SWR frequency characteristic curve 304 corresponds to the third antenna tuning mode in which the antenna 40U exhibits satisfactory resonant peaks at the lowband frequency f1 and the highband frequency f2' (for coverage of the 2100 MHz band). In the third antenna tuning mode, circuit 210' is switched for use to shift wireless coverage from frequency f2 to f2'.
In general, the switchable inductor circuits described in relation to Figures 7 to 9 can be used for tuning the high band coverage to the 40U antenna (for example, the switchable inductor circuits can be configured in at least two states for the provision of wireless coverage in at least two high-band frequency ranges), while variable capacitor 212-2 can be tuned to adjust the low-band coverage for the 40U antenna (e.g., the variable capacitor associated with the 18C low band can be tuned to provide wireless coverage in at least two low band frequency bands). Figures 11 and 12 are merely illustrative. If desired, antennas 40L, 40U and 40WF may include antenna tuning circuitry that allows device 10 to transmit and receive wireless signals in any suitable number of radio frequency communications bands.
According to one embodiment, an electronic device is provided which includes: a housing having a peripheral conductive member running around at least some edges of the housing; an inverted F antenna which is formed from an antenna ground and a portion of the peripheral conductive member; and a switchable inductor coupled between the antenna ground and the peripheral conductive member portion.
According to another embodiment, the peripheral conductive member includes at least one space that divides the peripheral conductive member into a plurality of segments, and the portion includes at least one of the plurality of segments.
In another embodiment, the antenna ground includes conductive housing structures formed in the electronic device.
In another embodiment, the conductive housing structures include a printed circuit board.
In accordance with another embodiment, the inverted F antenna includes first and second antenna feed terminals, and the switchable inductor is coupled between the first and second antenna feed terminals.
In another embodiment, the switchable inductor includes an inductor and a switch which are connected in series between the first and second antenna supply terminals.
According to another embodiment, the electronic device further includes a wireless transceiver circuit, where the wireless transceiver circuit is coupled to the first antenna power terminal.
According to another embodiment, the electronic device further includes a conductive path coupled in parallel with the switchable inductor between the first and second antenna feed terminals.
In another embodiment, the electronic device further includes a variable capacitor circuit that bridges at least one space in the peripheral conductive member.
According to one embodiment, a wireless electronic device is provided, which includes: a housing containing conductive structures forming an antenna ground and having a peripheral conductive member running around at least some edges of the housing; an antenna which is formed from the antenna ground and a portion of the peripheral conductive member; and a switchable inductor circuit coupled between the antenna ground and the peripheral conductive member portion, wherein, when the switchable inductor circuit is switched out of use, the antenna is configured to operate in a low-band frequency range and in a first high-band frequency range, and wherein, when the switchable inductor circuit is switched for use, the antenna is configured to operate in the low-band frequency range and is configured to operate in a second frequency range highband, which is higher in frequency than the first highband frequency band.
In another embodiment, the antenna includes the first and second antenna feed terminals, and the switchable inductor circuit is coupled between the first and second antenna feed terminals, and the electronic device further includes a transceiver circuit without wire attached to the first antenna power terminal.
In another embodiment, the antenna includes an inverted F antenna.
In another embodiment, the peripheral conductive member has at least two spaces, and the wireless electronic device further includes a variable capacitor circuit that bridges one of the two spaces.
According to another embodiment, the switchable inductor circuit includes an inductor and a switch which are connected in series between the first and second antenna supply terminals.
In another embodiment, the switchable inductor circuit includes: a switch; a first inductor, where the first inductor and the switch are coupled in series between the first and second antenna feed terminals; and a second inductor, wherein the second inductor and switch are coupled in series between the first and second antenna feed terminals.
In another embodiment, the switchable inductor circuit includes: first and second switches; a first inductor, wherein the first inductor and the first switch are coupled in series between the first and second antenna feed terminals; and a second inductor, where the second inductor and the second switch are coupled in series between the first and second antenna feed terminals.
According to another embodiment, a wireless electronic device is provided, which includes: a housing having a periphery; a conductive structure running along the periphery and having at least two spaces on the periphery; an inverted F antenna formed at least partially from the conductive structure; and a variable capacitor bridging at least one of the spaces in the peripheral conductive member, wherein: when the variable capacitor is tuned to provide a first capacitance, the inverted F antenna is configured to operate in a first frequency range of low band and in a high band frequency range; and, when the variable capacitor is tuned to provide a second capacitance that is different from the first capacitance, the inverted-F antenna is configured to operate in a second low-band frequency range that is lower in frequency than the first low-band frequency range. low-band frequency and is configured to operate in the high-band frequency range.
In another embodiment, the inverted-F antenna includes first and second antenna feed terminals, and the wireless electronic device further includes wireless transceiver circuitry coupled to the first antenna feed terminal.
According to another embodiment, the wireless electronic device further includes a switchable inductor coupled between the first and second antenna feed terminals.
In another embodiment, the switchable inductor includes an inductor and a switch that are coupled in series between the first and second antenna feed terminals.
According to another embodiment, the wireless electronic device further includes a short conductive path coupled in parallel to the switchable inductor between the first and second antenna power terminals.
According to another embodiment, the wireless electronic device further includes a processing circuit, where the processing circuit generates control signals that tune the variable capacitor to provide the first and second capacitances.
The foregoing is merely illustrative of the principles of this invention, and various modifications may be made by those skilled in the art without departing from the scope and spirit of the invention. The preceding modalities may be implemented individually or in any combination.

权利要求:
Claims (20)
[0001]
1. An electronic device, comprising: a housing having a peripheral conductive member running around at least some edges of the housing; characterized by an inverted F antenna which is formed from an antenna ground and a portion of the peripheral conductive member wherein the inverted F antenna is configured to operate in a low band frequency range centered on a first frequency and a high-band frequency band centered on a second frequency that is greater than the first frequency; and a switchable inductor coupled between the antenna ground and the peripheral conductive member portion, wherein the selectable inductor is configured to center the high-band frequency range at a third frequency that is greater than the first and second frequencies, while the inverted F antenna maintains operation in the low band frequency range centered on the first frequency.
[0002]
2. Electronic device according to claim 1, characterized in that the peripheral conductive member comprises at least one space dividing the peripheral conductive member into a plurality of segments, and the portion comprises at least one of the plurality of segments.
[0003]
3. Electronic device according to claim 2, characterized in that the antenna ground includes conductive housing structures formed in the electronic device.
[0004]
4. Electronic device, according to claim 3, characterized in that the conductive housing structures comprise a printed circuit board.
[0005]
5. Electronic device according to claim 2, characterized in that the inverted F antenna comprises first and second antenna supply terminals, and the switchable inductor is coupled between the first and second antenna supply terminals .
[0006]
6. Electronic device, according to claim 5, characterized in that the switchable inductor comprises an inductor and a switch that are connected in series between the first and second antenna supply terminals.
[0007]
7. Electronic device, according to claim 6, characterized in that it further comprises: a wireless transceiver circuit, wherein the wireless transceiver circuit is coupled to the first antenna power terminal.
[0008]
8. Electronic device, according to claim 7, characterized in that it further comprises: a conductive path coupled in parallel with the switchable inductor between the first and second antenna supply terminals.
[0009]
9. Electronic device according to claim 8, characterized in that it further comprises: a variable capacitor circuit that forms a bridge at least in one space in the peripheral conductive member.
[0010]
10. Wireless electronic device, comprising: a housing containing conductive structures forming an antenna ground and having a peripheral conductive member running around at least some edges of the housing; an antenna which is formed from the antenna ground and a portion of the peripheral conductive member; and a switchable inductor circuit coupled between the antenna ground and the peripheral conductive member portion, wherein: when the switchable inductor circuit is switched out of use, the antenna is configured to operate in a low-band frequency range and in a first high-band frequency range; and when the switchable inductor circuit is switched for use, the antenna is configured to operate in the low-band frequency range and is configured to operate in a second high-band frequency range, which is higher in frequency than the first high-band frequency range.
[0011]
11. Wireless electronic device according to claim 10, characterized in that the antenna comprises the first and second antenna supply terminals, and the switchable inductor circuit is coupled between the first and second antenna supply terminals , further comprising: a wireless transceiver circuit coupled to the first antenna power terminal.
[0012]
12. Wireless electronic device, according to claim 11, characterized in that the antenna comprises an inverted F antenna.
[0013]
13. Wireless electronic device, according to claim 12, characterized in that the peripheral conductive member has at least two spaces, which further comprises: a variable capacitor circuit that forms a bridge in one of the two spaces.
[0014]
14. Wireless electronic device according to claim 12, characterized in that the switchable inductor circuit comprises an inductor and a switch that are connected in series between the first and second antenna supply terminals.
[0015]
15. Wireless electronic device, according to claim 12, characterized in that the switchable inductor circuit comprises: a switch; a first inductor, where the first inductor and the switch are coupled in series between the first and second antenna feed terminals; and a second inductor, wherein the second inductor and switch are coupled in series between the first and second antenna feed terminals.
[0016]
16. Wireless electronic device, according to claim 12, characterized in that the switchable inductor circuit comprises: first and second switches; a first inductor, wherein the first inductor and the first switch are coupled in series between the first and second antenna feed terminals; and a second inductor, where the second inductor and the second switch are coupled in series between the first and second antenna feed terminals.
[0017]
17. A wireless wireless electronic device, comprising: a housing having a periphery; a conductive structure running along the periphery and having at least two spaces on the periphery; characterized by an inverted F antenna formed at least partially from an antenna ground and from the conductive structure a switchable inductor coupled between the antenna ground and the conductive structure; and a variable capacitor bridging at least one of the spaces in the peripheral conductive member, wherein: when the variable capacitor is tuned to provide a first capacitance, the inverted F antenna is configured to operate in a first frequency range of low band and in a first high band frequency range; and when the variable capacitor is tuned to provide a second capacitance that is different from the first capacitance and the switchable inductor is put into use, the inverted-F antenna is configured to operate in a second lowband frequency range that is more lower in frequency than the first low-band frequency range and is configured to operate in a second high-band frequency range that is greater than the high-band frequency range.
[0018]
18. Wireless electronic device according to claim 17, characterized in that the inverted F antenna comprises first and second antenna power terminals, further comprising: a wireless transceiver circuit coupled to the first antenna power terminal antenna; and a processing circuit, wherein the processing circuit generates control signals that tune the variable capacitor for the provision of the first and second capacitances.
[0019]
19. Wireless electronic device, according to claim 18, characterized in that: the switchable inductor is coupled between the first and second antenna supply terminals and, wherein the switchable inductor comprises an inductor and a switch that are coupled in series between the first and second antenna feed terminals.
[0020]
Wireless electronic device according to claim 19, characterized in that it further comprises a short conductive path coupled in parallel to the switchable inductor between the first and second antenna supply terminals.

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引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US2324462A|1941-11-15|1943-07-13|Gen Electric|High frequency antenna system|

---

US2942263A|1957-02-25|1960-06-21|Gen Dynamics Corp|Antennas|

---

NL275456A|1961-06-20|

---

US3394373A|1967-04-26|1968-07-23|Avco Corp|Combined oscillator and folded slot antenna for fuze useful in small projectiles|

---

US3736591A|1970-10-30|1973-05-29|Motorola Inc|Receiving antenna for miniature radio receiver|

---

JPS583405B2|1976-09-24|1983-01-21|Nippon Electric Co|

---

JPH0227841B2|1981-02-27|1990-06-20|Tokyo Shibaura Electric Co|

---

FR2545279B1|1983-04-27|1986-03-14|Applic Rech Electronique|TUNED LOOP ANTENNA WITH RANGE SWITCHING|

---

US5061943A|1988-08-03|1991-10-29|Agence Spatiale Europenne|Planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane|

---

US4879755A|1987-05-29|1989-11-07|Stolar, Inc.|Medium frequency mine communication system|

---

US4894663A|1987-11-16|1990-01-16|Motorola, Inc.|Ultra thin radio housing with integral antenna|

---

ZA889254B|1987-12-10|1990-08-29|Uniscan Ltd|Powering and communication apparatus and method|

---

US4893131A|1988-06-15|1990-01-09|Smith William J|Mobile or ground mounted arcuate antenna|

---

US4980694A|1989-04-14|1990-12-25|Goldstar Products Company, Limited|Portable communication apparatus with folded-slot edge-congruent antenna|

---

US5048118A|1989-07-10|1991-09-10|Motorola, Inc.|Combination dual loop antenna and bezel with detachable lens cap|

---

US5041838A|1990-03-06|1991-08-20|Liimatainen William J|Cellular telephone antenna|

---

JPH03293822A|1990-04-12|1991-12-25|Pioneer Electron Corp|Diversity receiver|

---

DE9010270U1|1990-05-04|1991-09-05|Junghans Uhren Gmbh, 7230 Schramberg, De|

---

US5021010A|1990-09-27|1991-06-04|Gte Products Corporation|Soldered connector for a shielded coaxial cable|

---

EP0565725B1|1991-11-05|1997-05-07|Seiko Epson Corporation|Antenna device for radio apparatus|

---

DE4322352C2|1993-07-05|1996-09-05|Siemens Ag|High-frequency system of a magnetic resonance imaging system with a galvanically decoupled local coil device|

---

US5408241A|1993-08-20|1995-04-18|Ball Corporation|Apparatus and method for tuning embedded antenna|

---

EP0687030B1|1994-05-10|2001-09-26|Murata Manufacturing Co., Ltd.|Antenna unit|

---

US5381387A|1994-05-06|1995-01-10|At&T Corp.|Sound port for a wrist telephone|

---

US5561437A|1994-09-15|1996-10-01|Motorola, Inc.|Two position fold-over dipole antenna|

---

EP0741433B1|1995-05-05|2001-10-04|Eta SA Fabriques d'Ebauches|Antenna structure for use in a timepiece|

---

US5812066A|1995-08-16|1998-09-22|Terk Technologies Corporation|Antenna tuning control circuit|

---

JPH0993029A|1995-09-21|1997-04-04|Matsushita Electric Ind Co Ltd|Antenna device|

---

JP3340621B2|1996-05-13|2002-11-05|松下電器産業株式会社|Planar antenna|

---

US5768691A|1996-08-07|1998-06-16|Nokia Mobile Phones Limited|Antenna switching circuits for radio telephones|

---

US5754143A|1996-10-29|1998-05-19|Southwest Research Institute|Switch-tuned meandered-slot antenna|

---

CH690525A5|1996-11-22|2000-09-29|Ebauchesfabrik Eta Ag|Timepiece including a receiving antenna and / or transmitting a radio broadcast signal.|

---

GB2320815B|1996-12-23|2001-12-12|Nokia Mobile Phones Ltd|Antenna assembly|

---

US6021317A|1997-04-30|2000-02-01|Ericsson Inc.|Dual antenna radiotelephone systems including an antenna-management matrix switch and associated methods of operation|

---

SE511295C2|1997-04-30|1999-09-06|Moteco Ab|Antenna for radio communication device|

---

US6011699A|1997-10-15|2000-01-04|Motorola, Inc.|Electronic device including apparatus and method for routing flexible circuit conductors|

---

US6269054B1|1998-05-05|2001-07-31|Stefano A. Truini|Bio-rhythm wrist watch|

---

US6097345A|1998-11-03|2000-08-01|The Ohio State University|Dual band antenna for vehicles|

---

US6282433B1|1999-04-14|2001-08-28|Ericsson Inc.|Personal communication terminal with a slot antenna|

---

US6560443B1|1999-05-28|2003-05-06|Nokia Corporation|Antenna sharing switching circuitry for multi-transceiver mobile terminal and method therefor|

---

JP4012733B2|1999-09-20|2007-11-21|フラクトゥス・ソシエダッド・アノニマ|Multi-level antenna|

---

DE69906973T2|1999-10-11|2004-02-26|Asulab S.A.|Antenna structure that forms a housing for electronic components of a portable device|

---

SE523293C2|1999-11-03|2004-04-06|Ericsson Telefon Ab L M|Multiband Antenna|

---

US6678508B1|2000-02-07|2004-01-13|Ericsson Inc.|Power conservation method for mobile communications device with two receivers|

---

US6545642B1|2000-02-09|2003-04-08|Ericsson Inc.|Antenna/push-button assembly and portable radiotelephone including the same|

---

US6731920B1|2000-03-31|2004-05-04|Matsushita Electric Industrial Co., Ltd.|Portable telephone apparatus and control method thereof|

---

JP4042340B2|2000-05-17|2008-02-06|カシオ計算機株式会社|Information equipment|

---

US6339400B1|2000-06-21|2002-01-15|International Business Machines Corporation|Integrated antenna for laptop applications|

---

US6885880B1|2000-09-22|2005-04-26|Teleponaktiebolaget Lm Ericsson |Inverted-F antenna for flip-style mobile terminals|

---

US6622031B1|2000-10-04|2003-09-16|3Com Corporation|Antenna flip-up on removal of stylus for handheld device|

---

JP3430140B2|2000-10-05|2003-07-28|埼玉日本電気株式会社|Inverted-F antenna and wireless device using the same|

---

US6518929B1|2000-10-19|2003-02-11|Mobilian Corporation|Antenna polarization separation to provide signal isolation|

---

JP2002268566A|2001-03-12|2002-09-20|Fujitsu Ltd|Display panel module|

---

US20040137950A1|2001-03-23|2004-07-15|Thomas Bolin|Built-in, multi band, multi antenna system|

---

US7180467B2|2002-02-12|2007-02-20|Kyocera Wireless Corp.|System and method for dual-band antenna matching|

---

US7184727B2|2002-02-12|2007-02-27|Kyocera Wireless Corp.|Full-duplex antenna system and method|

---

GB0117882D0|2001-07-21|2001-09-12|Koninkl Philips Electronics Nv|Antenna arrangement|

---

JP2003060422A|2001-08-09|2003-02-28|Matsushita Electric Ind Co Ltd|Display-antenna integrated structure and communication device|

---

EP2202842B1|2001-09-07|2011-06-29|Seiko Epson Corporation|Electronic timepiece with a contactless data communication function, and a contactless data communcation system|

---

EP1309103A1|2001-10-31|2003-05-07|Nokia Corporation|Antenna system for GSM/WLAN radio operation|

---

FI118404B|2001-11-27|2007-10-31|Pulse Finland Oy|Double antenna and radio|

---

US20030107518A1|2001-12-12|2003-06-12|Li Ronglin|Folded shorted patch antenna|

---

GB2384367A|2002-01-22|2003-07-23|Benjamin Edginton|Multi-band small loop antenna|

---

US6606063B1|2002-02-26|2003-08-12|Bae Systems Information And Electronic Systems Integration Inc.|Radiation synthesizer feed configurations|

---

GB0209818D0|2002-04-30|2002-06-05|Koninkl Philips Electronics Nv|Antenna arrangement|

---

AU2003227707A1|2002-05-08|2003-11-11|Sony Ericsson Mobile Communications Ab|Multiple frequency bands switchable antenna for portable terminals|

---

US7260424B2|2002-05-24|2007-08-21|Schmidt Dominik J|Dynamically configured antenna for multiple frequencies and bandwidths|

---

BR0215790A|2002-06-25|2005-03-01|Fractus Sa|Multi-tune Antenna|

---

JP3690375B2|2002-07-09|2005-08-31|日立電線株式会社|Plate-like multi-antenna and electric device provided with the same|

---

US6670923B1|2002-07-24|2003-12-30|Centurion Wireless Technologies, Inc.|Dual feel multi-band planar antenna|

---

US20040017318A1|2002-07-26|2004-01-29|Amphenol Socapex|Antenna of small dimensions|

---

US6968508B2|2002-07-30|2005-11-22|Motorola, Inc.|Rotating user interface|

---

JP2004096341A|2002-08-30|2004-03-25|Fujitsu Ltd|Antenna apparatus including inverted f antenna with variable resonance frequency|

---

US7027838B2|2002-09-10|2006-04-11|Motorola, Inc.|Duel grounded internal antenna|

---

FI114836B|2002-09-19|2004-12-31|Filtronic Lk Oy|Internal antenna|

---

US6956530B2|2002-09-20|2005-10-18|Centurion Wireless Technologies, Inc.|Compact, low profile, single feed, multi-band, printed antenna|

---

JP4363936B2|2002-09-26|2009-11-11|パナソニック株式会社|Antenna for wireless terminal device and wireless terminal device|

---

US6741214B1|2002-11-06|2004-05-25|Centurion Wireless Technologies, Inc.|Planar Inverted-F-Antenna having a slotted radiating element providing global cellular and GPS-bluetooth frequency response|

---

TW545712U|2002-11-08|2003-08-01|Hon Hai Prec Ind Co Ltd|Multi-band antenna|

---

US6762723B2|2002-11-08|2004-07-13|Motorola, Inc.|Wireless communication device having multiband antenna|

---

AU2003277639A1|2002-11-18|2004-06-15|Yokowo Co., Ltd.|Antenna for a plurality of bands|

---

US6903686B2|2002-12-17|2005-06-07|Sony Ericsson Mobile Communications Ab|Multi-branch planar antennas having multiple resonant frequency bands and wireless terminals incorporating the same|

---

DE10301125B3|2003-01-14|2004-06-24|Eads Deutschland Gmbh|Transmission and reception path calibration method for antenna system, has calibration signals provided by amplification of base signal within defined limits of reference signal|

---

US6831607B2|2003-01-28|2004-12-14|Centurion Wireless Technologies, Inc.|Single-feed, multi-band, virtual two-antenna assembly having the radiating element of one planar inverted-F antenna contained within the radiating element of another PIFA|

---

CN100511837C|2003-02-03|2009-07-08|松下电器产业株式会社|Antenna device and wireless communication device using same|

---

WO2004070879A1|2003-02-03|2004-08-19|Matsushita Electric Industrial Co., Ltd.|Antenna device and wireless communication device using same|

---

JP2004254148A|2003-02-21|2004-09-09|Internatl Business Mach Corp <Ibm>|Antenna assembly and transmitting/receiving device|

---

FI115574B|2003-04-15|2005-05-31|Filtronic Lk Oy|Adjustable multi-band antenna|

---

US7035170B2|2003-04-29|2006-04-25|International Business Machines Corporation|Device for displaying variable data for small screens|

---

US6822611B1|2003-05-08|2004-11-23|Motorola, Inc.|Wideband internal antenna for communication device|

---

US7164387B2|2003-05-12|2007-01-16|Hrl Laboratories, Llc|Compact tunable antenna|

---

US7848771B2|2003-05-14|2010-12-07|Nxp B.V.|Wireless terminals|

---

US6894647B2|2003-05-23|2005-05-17|Kyocera Wireless Corp.|Inverted-F antenna|

---

US20040257283A1|2003-06-19|2004-12-23|International Business Machines Corporation|Antennas integrated with metallic display covers of computing devices|

---

DE20314836U1|2003-09-23|2003-11-20|Feig Electronic Gmbh|Reader antenna for Radio Frequency Identification system consists of two conductors connected to oscillation circuit with inductance, capacitance and resistor|

---

US7084814B2|2003-09-23|2006-08-01|Uniwill Computer Corp.|Planar inverted F antenna|

---

KR100524074B1|2003-10-01|2005-10-26|삼성전자주식회사|Electronic device having bezel structure|

---

TWI233713B|2003-10-06|2005-06-01|Quanta Comp Inc|Multi-band antenna|

---

FI121518B|2003-10-09|2010-12-15|Pulse Finland Oy|Shell design for a radio|

---

US6980154B2|2003-10-23|2005-12-27|Sony Ericsson Mobile Communications Ab|Planar inverted F antennas including current nulls between feed and ground couplings and related communications devices|

---

DE10353104A1|2003-11-12|2005-06-09|Tesat-Spacecom Gmbh & Co.Kg|Dielectric filter set e.g. for adjusting coupling of filter, has antennas in filter firmly connected and dielectric to these are arranged with arrangement for evaluation of dielectric exhibits adjusting mechanism|

---

US20050153658A1|2004-01-12|2005-07-14|Nagy Louis L.|Multiplexed self-structuring antenna system|

---

US7155178B2|2004-01-29|2006-12-26|Mediatek Inc.|Circuit system for wireless communications|

---

TWM257522U|2004-02-27|2005-02-21|Hon Hai Prec Ind Co Ltd|Multi-band antenna|

---

CN1691415B|2004-04-29|2010-08-11|美国莫列斯股份有限公司|Low side height antenna|

---

JP4871516B2|2004-05-18|2012-02-08|パナソニック株式会社|ANTENNA DEVICE AND RADIO DEVICE USING ANTENNA DEVICE|

---

US7623079B2|2004-06-30|2009-11-24|Denso Corporation|Vehicle antenna, monitor display device having vehicle antenna, an method of forming vehicle antenna|

---

US7408517B1|2004-09-14|2008-08-05|Kyocera Wireless Corp.|Tunable capacitively-loaded magnetic dipole antenna|

---

US7167090B1|2004-09-17|2007-01-23|Massachusetts Institute Of Technology|Far-field RF power extraction circuits and systems|

---

US7271769B2|2004-09-22|2007-09-18|Lenovo Pte Ltd.|Antennas encapsulated within plastic display covers of computing devices|

---

US8000737B2|2004-10-15|2011-08-16|Sky Cross, Inc.|Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness|

---

US7176842B2|2004-10-27|2007-02-13|Intel Corporation|Dual band slot antenna|

---

US7212161B2|2004-11-19|2007-05-01|Lenovo Pte. Ltd.|Low-profile embedded antenna architectures for wireless devices|

---

US7348928B2|2004-12-14|2008-03-25|Intel Corporation|Slot antenna having a MEMS varactor for resonance frequency tuning|

---

JP4092330B2|2004-12-21|2008-05-28|株式会社東芝|Antenna device|

---

EP1843432B1|2005-01-27|2015-08-12|Murata Manufacturing Co., Ltd.|Antenna and wireless communication device|

---

JP4633605B2|2005-01-31|2011-02-23|富士通コンポーネント株式会社|ANTENNA DEVICE AND ELECTRONIC DEVICE, ELECTRONIC CAMERA, ELECTRONIC CAMERA LIGHT EMITTING DEVICE, AND PERIPHERAL DEVICE|

---

CN101167215A|2005-04-27|2008-04-23|Nxp股份有限公司|Radio device having antenna arrangement suited for operating over a plurality of bands.|

---

CN101185198A|2005-05-31|2008-05-21|Nxp股份有限公司|Planar antenna assembly with impedance matching and reduced user interaction, for a RF communication equipment.|

---

FI20055420A0|2005-07-25|2005-07-25|Lk Products Oy|Adjustable multi-band antenna|

---

US7332980B2|2005-09-22|2008-02-19|Samsung Electronics Co., Ltd.|System and method for a digitally tunable impedance matching network|

---

FI119009B|2005-10-03|2008-06-13|Pulse Finland Oy|Multiple-band antenna|

---

FI119535B|2005-10-03|2008-12-15|Pulse Finland Oy|Multiple-band antenna|

---

FI118782B|2005-10-14|2008-03-14|Pulse Finland Oy|Adjustable antenna|

---

CN101371402B|2005-12-12|2014-02-12|弗莱克斯电子有限责任公司|Wideband antenna system|

---

US7463205B2|2005-12-22|2008-12-09|Microsoft Corporation|Dipole antenna for a watchband|

---

US7499681B2|2005-12-22|2009-03-03|Kyocera Wireless Corp.|Apparatus, system, and method for managing an antenna network during a half duplex call|

---

US8325097B2|2006-01-14|2012-12-04|Research In Motion Rf, Inc.|Adaptively tunable antennas and method of operation therefore|

---

US7616163B2|2006-01-25|2009-11-10|Sky Cross, Inc.|Multiband tunable antenna|

---

US20070176843A1|2006-01-27|2007-08-02|Zeewaves Systems, Inc.|RF communication system with embedded antenna|

---

US7728785B2|2006-02-07|2010-06-01|Nokia Corporation|Loop antenna with a parasitic radiator|

---

US7671693B2|2006-02-17|2010-03-02|Samsung Electronics Co., Ltd.|System and method for a tunable impedance matching network|

---

US7768461B2|2006-04-17|2010-08-03|Getac Technology Corporation|Antenna device with insert-molded antenna pattern|

---

EP1995889A4|2006-03-16|2012-06-27|Panasonic Corp|Diversity reception device|

---

TWI337465B|2006-03-17|2011-02-11|Compal Electronics Inc|An electronic device with dual antenna structures and their switching method|

---

US7696932B2|2006-04-03|2010-04-13|Ethertronics|Antenna configured for low frequency applications|

---

US7773041B2|2006-07-12|2010-08-10|Apple Inc.|Antenna system|

---

WO2008010149A1|2006-07-17|2008-01-24|Nxp B.V.|Antenna with reduced sensitivity to user finger position|

---

US7936307B2|2006-07-24|2011-05-03|Nokia Corporation|Cover antennas|

---

CN101496224B|2006-07-28|2012-12-12|株式会社村田制作所|Antenna device and radio communication device|

---

US7768468B2|2006-08-29|2010-08-03|Rincon Research Corporation|Arrangement and method for increasing bandwidth|

---

US7671804B2|2006-09-05|2010-03-02|Apple Inc.|Tunable antennas for handheld devices|

---

US7215600B1|2006-09-12|2007-05-08|Timex Group B.V.|Antenna arrangement for an electronic device and an electronic device including same|

---

US8081940B2|2006-09-29|2011-12-20|Broadcom Corporation|Method and system for dynamically tuning and calibrating an antenna using an on-chip digitally controlled array of capacitors|

---

US20080100514A1|2006-10-25|2008-05-01|Abdul-Gaffoor Mohammed R|Antenna Arrangement for Hinged Wireless Communication Device|

---

US8781522B2|2006-11-02|2014-07-15|Qualcomm Incorporated|Adaptable antenna system|

---

CN101197465B|2006-12-05|2012-10-10|松下电器产业株式会社|Antenna apparatus and wireless communication device|

---

JP4762126B2|2006-12-20|2011-08-31|株式会社東芝|Electronics|

---

WO2008084273A2|2006-12-21|2008-07-17|Nokia Corporation|An antenna device|

---

US7595759B2|2007-01-04|2009-09-29|Apple Inc.|Handheld electronic devices with isolated antennas|

---

US20090081963A1|2007-01-26|2009-03-26|Ip Sensing, Inc.|Wireless communication device with internal antenna system for use in hazardous locations|

---

JP5150618B2|2007-03-29|2013-02-20|パナソニック株式会社|Antenna device and portable terminal device|

---

US7612725B2|2007-06-21|2009-11-03|Apple Inc.|Antennas for handheld electronic devices with conductive bezels|

---

US7889139B2|2007-06-21|2011-02-15|Apple Inc.|Handheld electronic device with cable grounding|

---

US7876274B2|2007-06-21|2011-01-25|Apple Inc.|Wireless handheld electronic device|

---

US8138977B2|2007-08-07|2012-03-20|Apple Inc.|Antennas for handheld electronic devices|

---

US8090408B2|2007-08-10|2012-01-03|Panasonic Corporation|Portable wireless device|

---

JP4788685B2|2007-08-13|2011-10-05|富士電機株式会社|Antenna, communication device, communication system|

---

US7768462B2|2007-08-22|2010-08-03|Apple Inc.|Multiband antenna for handheld electronic devices|

---

US7619574B1|2007-09-27|2009-11-17|Rockwell Collins, Inc.|Tunable antenna|

---

EP2050437A1|2007-10-15|2009-04-22|Laboratoires SMB|Improved pharmaceutical dry powder compositions for inhalation.|

---

US7551142B1|2007-12-13|2009-06-23|Apple Inc.|Hybrid antennas with directly fed antenna slots for handheld electronic devices|

---

US20090153412A1|2007-12-18|2009-06-18|Bing Chiang|Antenna slot windows for electronic device|

---

TWI350027B|2007-12-31|2011-10-01|Htc Corp|Electronic apparatus with hidden antenna|

---

US8264412B2|2008-01-04|2012-09-11|Apple Inc.|Antennas and antenna carrier structures for electronic devices|

---

TWI370579B|2008-01-10|2012-08-11|Unictron Technologies Corp|Antenna structure with fixing unit|

---

US20090180403A1|2008-01-11|2009-07-16|Bogdan Tudosoiu|Multi-band and multi-mode radio frequency front-end module architecture|

---

EP2081253A1|2008-01-18|2009-07-22|Laird Technologies AB|Antenna device and portable radio communication device comprising such an antenna device|

---

KR101413067B1|2008-01-23|2014-07-01|재단법인서울대학교산학협력재단|Array variable capacitor apparatus|

---

US7652629B2|2008-02-26|2010-01-26|Kabushiki Kaisha Toshiba|Antenna device and radio apparatus having a broadband characteristic|

---

FR2928508B1|2008-03-07|2014-04-18|St Microelectronics Tours Sas|CIRCUIT INTEGRATING A STREAMING WAVE RATE CORRECTION ADJUSTABLE ANTENNA|

---

CN101540620A|2008-03-17|2009-09-23|英华达股份有限公司|Tunable antenna device|

---

US8106836B2|2008-04-11|2012-01-31|Apple Inc.|Hybrid antennas for electronic devices|

---

US8102319B2|2008-04-11|2012-01-24|Apple Inc.|Hybrid antennas for electronic devices|

---

JP5150369B2|2008-05-28|2013-02-20|京セラ株式会社|Communication equipment|

---

KR20090129791A|2008-06-13|2009-12-17|가부시키가이샤 교토 소프트웨어 리서치|Multiple value flash memory|

---

US8656579B2|2008-08-29|2014-02-25|Motorola Mobility Llc|Method of forming a housing with integral antenna|

---

US8169373B2|2008-09-05|2012-05-01|Apple Inc.|Antennas with tuning structure for handheld devices|

---

JP2010062976A|2008-09-05|2010-03-18|Sony Ericsson Mobile Communications Ab|Notch antenna and wireless device|

---

US20100060421A1|2008-09-08|2010-03-11|Chih-Chen Chang|Rfid tag with a semi-enclosed coupler|

---

US8665164B2|2008-11-19|2014-03-04|Apple Inc.|Multiband handheld electronic device slot antenna|

---

JP2010147636A|2008-12-17|2010-07-01|Toshiba Corp|Antenna device and radio apparatus|

---

EP2219265A1|2009-02-12|2010-08-18|Laird Technologies AB|An antenna device, an antenna system and a portable radio communication device comprising such an antenna device|

---

US8102321B2|2009-03-10|2012-01-24|Apple Inc.|Cavity antenna for an electronic device|

---

TWI378599B|2009-04-27|2012-12-01|Htc Corp|Multi-loop antenna structure and hand-held electronic device using the same|

---

US8896487B2|2009-07-09|2014-11-25|Apple Inc.|Cavity antennas for electronic devices|

---

US20120245201A1|2009-07-23|2012-09-27|Markowitz John S|Isopropylphenidate for Treatment of Attention-Deficit/Hyperactivity Disorder and Fatigue-Related Disorders and Conditions|

---

WO2011024280A1|2009-08-27|2011-03-03|株式会社 東芝|Antenna device and communication device|

---

US7714790B1|2009-10-27|2010-05-11|Crestron Electronics, Inc.|Wall-mounted electrical device with modular antenna bezel frame|

---

US8270914B2|2009-12-03|2012-09-18|Apple Inc.|Bezel gap antennas|

---

CN101814649A|2010-03-19|2010-08-25|中兴通讯股份有限公司|Method for improving radiation performance of antenna and a mobile terminal|

---

US9070969B2|2010-07-06|2015-06-30|Apple Inc.|Tunable antenna systems|

---

JP2012018468A|2010-07-06|2012-01-26|Aisin Aw Co Ltd|Display device and program|

---

US8947302B2|2010-11-05|2015-02-03|Apple Inc.|Antenna system with antenna swapping and antenna tuning|

---

US9363005B2|2010-11-05|2016-06-07|Apple Inc.|Adaptive antenna diversity system|

---

JP5666289B2|2010-12-24|2015-02-12|京セラ株式会社|Electronics|

---

US9246221B2|2011-03-07|2016-01-26|Apple Inc.|Tunable loop antennas|

---

US9350069B2|2012-01-04|2016-05-24|Apple Inc.|Antenna with switchable inductor low-band tuning|US8483617B2|2010-09-30|2013-07-09|Broadcom Corporation|Portable computing device with high-speed data communication|

---

US9070969B2|2010-07-06|2015-06-30|Apple Inc.|Tunable antenna systems|

---

KR101334812B1|2011-04-14|2013-11-28|삼성전자주식회사|Antenna device for portable terminal|

---

US9287627B2|2011-08-31|2016-03-15|Apple Inc.|Customizable antenna feed structure|

---

US9300033B2|2011-10-21|2016-03-29|Futurewei Technologies, Inc.|Wireless communication device with an antenna adjacent to an edge of the device|

---

US9350069B2|2012-01-04|2016-05-24|Apple Inc.|Antenna with switchable inductor low-band tuning|

---

US9337528B2|2012-01-27|2016-05-10|Blackberry Limited|Mobile wireless communications device including electrically conductive portable housing sections defining an antenna|

---

US9190712B2|2012-02-03|2015-11-17|Apple Inc.|Tunable antenna system|

---

US8798554B2|2012-02-08|2014-08-05|Apple Inc.|Tunable antenna system with multiple feeds|

---

US9203456B2|2012-09-25|2015-12-01|Htc Corporation|Mobile device|

---

CN103779669A|2012-10-22|2014-05-07|联想有限公司|Antenna device and method for controlling antenna device|

---

US9716307B2|2012-11-08|2017-07-25|Htc Corporation|Mobile device and antenna structure|

---

US9142879B2|2012-11-13|2015-09-22|Sony Corporation|Wireless electronic devices with a metal perimeter including a plurality of antennas|

---

US9793616B2|2012-11-19|2017-10-17|Apple Inc.|Shared antenna structures for near-field communications and non-near-field communications circuitry|

---

US9077078B2|2012-12-06|2015-07-07|Microsoft Technology Licensing, Llc|Reconfigurable monopole antenna for wireless communications|

---

US9112266B2|2012-12-06|2015-08-18|Microsoft Technology Licensing, Llc|Multiband monopole antenna built into decorative trim of a mobile device|

---

CN103001006B|2012-12-07|2016-06-15|Tcl通讯（宁波）有限公司|A kind of wideband antenna for mobile phone with passive antenna and mobile phone|

---

EP2936611B1|2012-12-21|2019-10-02|Nokia Technologies Oy|Apparatus for wireless communication|

---

KR102003710B1|2013-01-23|2019-07-25|삼성전자주식회사|An antenna and portable terminal having the same|

---

KR102025706B1|2013-01-30|2019-09-26|삼성전자주식회사|Antenna device for portable terminal|

---

TWI511366B|2013-01-30|2015-12-01|Acer Inc|Electronic device and antenna control method thereof|

---

CN103985953B|2013-02-08|2017-04-12|宏碁股份有限公司|Electronic apparatus and antenna control method thereof|

---

CN103151601B|2013-02-27|2016-04-13|上海安费诺永亿通讯电子有限公司|A kind of bottom edge slot coupled antenna|

---

US9647338B2|2013-03-11|2017-05-09|Pulse Finland Oy|Coupled antenna structure and methods|

---

US10079428B2|2013-03-11|2018-09-18|Pulse Finland Oy|Coupled antenna structure and methods|

---

US9153874B2|2013-03-18|2015-10-06|Apple Inc.|Electronic device having multiport antenna structures with resonating slot|

---

US9331397B2|2013-03-18|2016-05-03|Apple Inc.|Tunable antenna with slot-based parasitic element|

---

US9559433B2|2013-03-18|2017-01-31|Apple Inc.|Antenna system having two antennas and three ports|

---

US9293828B2|2013-03-27|2016-03-22|Apple Inc.|Antenna system with tuning from coupled antenna|

---

KR101467196B1|2013-03-29|2014-12-01|주식회사 팬택|Terminal including multiband antenna using conductive border|

---

US9444130B2|2013-04-10|2016-09-13|Apple Inc.|Antenna system with return path tuning and loop element|

---

US9276319B2|2013-05-08|2016-03-01|Apple Inc.|Electronic device antenna with multiple feeds for covering three communications bands|

---

US9337537B2|2013-05-08|2016-05-10|Apple Inc.|Antenna with tunable high band parasitic element|

---

CN104167605B|2013-05-17|2018-09-07|深圳富泰宏精密工业有限公司|The wireless communication device of antenna structure and the application antenna structure|

---

US9680202B2|2013-06-05|2017-06-13|Apple Inc.|Electronic devices with antenna windows on opposing housing surfaces|

---

US9825352B2|2013-06-20|2017-11-21|Sony Mobile Communications Inc.|Wireless electronic devices including a feed structure connected to a plurality of antennas|

---

CN103346383B|2013-06-28|2016-03-02|华为终端有限公司|Loop aerial assembly and there is the electronic equipment of this loop aerial assembly|

---

US20150002350A1|2013-07-01|2015-01-01|Sony Corporation|Wireless electronic devices including a variable tuning component|

---

GB2520228A|2013-07-02|2015-05-20|Nokia Technologies Oy|Apparatus and methods for wireless communication|

---

US20150009075A1|2013-07-05|2015-01-08|Sony Corporation|Orthogonal multi-antennas for mobile handsets based on characteristic mode manipulation|

---

GB2516869A|2013-08-02|2015-02-11|Nokia Corp|Wireless communication|

---

US9444141B2|2013-08-19|2016-09-13|Google Technology Holdings LLC|Antenna system for a smart portable device using a continuous metal band|

---

KR102119660B1|2013-10-17|2020-06-08|엘지전자 주식회사|Mobile terminal|

---

JP5928433B2|2013-10-25|2016-06-01|株式会社村田製作所|High frequency circuit module|

---

US9236659B2|2013-12-04|2016-01-12|Apple Inc.|Electronic device with hybrid inverted-F slot antenna|

---

KR101544698B1|2013-12-23|2015-08-17|주식회사 이엠따블유|Intenna|

---

CN104752822B|2013-12-31|2019-11-22|深圳富泰宏精密工业有限公司|The wireless communication device of antenna structure and the application antenna structure|

---

US9774073B2|2014-01-16|2017-09-26|Htc Corporation|Mobile device and multi-band antenna structure therein|

---

JP6212405B2|2014-02-19|2017-10-11|シャープ株式会社|transceiver|

---

CN104168730B|2014-02-26|2019-06-11|深圳富泰宏精密工业有限公司|Shell, using electronic device of the shell and preparation method thereof|

---

US9621230B2|2014-03-03|2017-04-11|Apple Inc.|Electronic device with near-field antennas|

---

US9325080B2|2014-03-03|2016-04-26|Apple Inc.|Electronic device with shared antenna structures and balun|

---

CN104934706B|2014-03-21|2017-04-12|华为终端有限公司|Electronic equipment|

---

US10312593B2|2014-04-16|2019-06-04|Apple Inc.|Antennas for near-field and non-near-field communications|

---

US10381875B2|2014-07-07|2019-08-13|Qualcomm Incorporated|Wireless power transfer through a metal object|

---

US9786981B2|2014-07-15|2017-10-10|Microsoft Technology Licensing, Llc|Antenna for electronic device|

---

TWM495681U|2014-08-15|2015-02-11|Wistron Neweb Corp|Wireless communication device|

---

KR102226165B1|2014-08-19|2021-03-10|삼성전자주식회사|Antenna and electronic device having it|

---

KR102178485B1|2014-08-21|2020-11-13|삼성전자주식회사|Antenna and electronic device having it|

---

KR102226173B1|2014-09-02|2021-03-10|삼성전자주식회사|Antenna using exterior metal frame and electronic device therewith|

---

US9531061B2|2014-09-03|2016-12-27|Apple Inc.|Electronic device antenna with reduced lossy mode|

---

US10096887B2|2014-09-15|2018-10-09|Blackberry Limited|Mobile device with tri-band antennas incorporated into a metal back side|

---

KR102309066B1|2014-10-08|2021-10-06|삼성전자 주식회사|Electronic device and antenna apparatus thereof|

---

CN105576349A|2014-10-15|2016-05-11|深圳富泰宏精密工业有限公司|Antenna structure and wireless communication apparatus having the same|

---

CN104540340B|2014-10-23|2018-09-25|深圳富泰宏精密工业有限公司|Shell, the electronic device and preparation method thereof using the shell|

---

KR20160069923A|2014-12-09|2016-06-17|엘지전자 주식회사|Antenna module and mobile terminal using the same|

---

CN104602476B|2014-12-23|2017-06-13|深圳富泰宏精密工业有限公司|Housing, the electronic installation and preparation method thereof using the housing|

---

WO2016101871A1|2014-12-26|2016-06-30|Byd Company Limited|Mobile terminal and antenna of mobile terminal|

---

CN105530788A|2014-12-26|2016-04-27|比亚迪股份有限公司|Communication equipment metal shell and preparation method thereof|

---

CN104701619B|2014-12-31|2017-08-01|东莞劲胜精密组件股份有限公司|A kind of loop checking installation closure wireloop antenna and mobile device|

---

US10381721B2|2015-01-04|2019-08-13|Huawei Technologies Co., Ltd.|Handheld device|

---

KR102176368B1|2015-01-05|2020-11-09|엘지전자 주식회사|Antenna module and mobile terminal having the same|

---

US9780452B2|2015-01-05|2017-10-03|Sony Corporation|Communication terminal|

---

US10477713B2|2015-02-04|2019-11-12|Motorola Mobility Llc|Single-piece metal housing with integral antennas|

---

US10051096B2|2015-02-06|2018-08-14|Samsung Electronics Co., Ltd.|Battery pack mounting structure and electronic device having the same|

---

US10056204B2|2015-02-06|2018-08-21|Samsung Electronics Co., Ltd.|Key button assembly and electronic device having the same|

---

EP3537694A1|2015-02-06|2019-09-11|Samsung Electronics Co., Ltd.|Electronic device including display with bent area|

---

EP3054656B1|2015-02-06|2021-12-15|Samsung Electronics Co., Ltd.|Housing, manufacturing method thereof, and electronic device having the housing|

---

EP3054657B1|2015-02-06|2019-03-06|Samsung Electronics Co., Ltd.|Electronic device with cover|

---

KR102296846B1|2015-02-06|2021-09-01|삼성전자주식회사|Key button assembly and electronic device having it|

---

KR102093154B1|2015-02-09|2020-04-14|삼성전기주식회사|Multi-band antenna using outer conductor of non-segmented, and terminal with the same|

---

DE102016201341B4|2015-02-09|2021-11-25|Samsung Electro-Mechanics Co., Ltd.|MULTI-BAND ANTENNA WITH EXTERNAL CONDUCTOR AND ELECTRONIC DEVICE INCLUDING THIS|

---

CN104577334B|2015-02-11|2017-07-21|小米科技有限责任公司|Anneta module and mobile terminal|

---

CN105870578A|2015-02-11|2016-08-17|三星电机株式会社|Electronic device including multiband antenna using persistent conductive border|

---

US9735829B2|2015-03-18|2017-08-15|Samsung Electro-Mechanics Co., Ltd.|Electronic device including multi-feed, multi-band antenna using external conductor|

---

KR102330024B1|2015-03-27|2021-11-23|삼성전자 주식회사|Antenna apparatus and electronic device including the same|

---

TWI538296B|2015-03-31|2016-06-11|和碩聯合科技股份有限公司|Mobile communication device with antenna|

---

US9666934B2|2015-04-08|2017-05-30|Motorola Mobility Llc|Antenna link in ultra-thin device with single-piece metal housing|

---

US9768491B2|2015-04-20|2017-09-19|Apple Inc.|Electronic device with peripheral hybrid antenna|

---

KR102364605B1|2015-05-27|2022-02-21|삼성전자주식회사|Multiband Antenna and Electronic Device with the Multiband Antenna|

---

US9660327B2|2015-06-12|2017-05-23|Sony Corporation|Combination antenna|

---

CN104953289B|2015-06-12|2018-01-19|广东欧珀移动通信有限公司|The communication terminal of antenna system and the application antenna system|

---

US9972891B2|2015-08-05|2018-05-15|Apple Inc.|Electronic device antenna with isolation mode|

---

KR20170048723A|2015-10-27|2017-05-10|삼성전자주식회사|An antenna structure and an electronic device comprising thereof|

---

KR20170053385A|2015-11-06|2017-05-16|삼성전자주식회사|Antenna and electronic device having the same|

---

WO2017092003A1|2015-12-03|2017-06-08|华为技术有限公司|Metal frame antenna and terminal device|

---

CN105514575A|2015-12-29|2016-04-20|北京锤子数码科技有限公司|Antenna|

---

WO2017130348A1|2016-01-28|2017-08-03|富士通株式会社|Antenna device|

---

CN105720355B|2016-01-29|2019-05-03|努比亚技术有限公司|Mobile terminal and its communication processing method|

---

US10879587B2|2016-02-16|2020-12-29|Fractus Antennas, S.L.|Wireless device including a metal frame antenna system based on multiple arms|

---

KR20170098400A|2016-02-20|2017-08-30|삼성전자주식회사|Antenna and electronic device including the antenna|

---

KR101756774B1|2016-03-23|2017-07-26|주식회사 에이스테크놀로지|Metal-Body Antenna with Loop type Antenna|

---

US10263319B2|2016-03-23|2019-04-16|Mediatek Inc.|Antenna with swappable radiation direction and communication device thereof|

---

CN107240765B|2016-03-29|2019-12-13|北京小米移动软件有限公司|WIFI antenna|

---

CN107634771A|2016-07-15|2018-01-26|联发科技（新加坡）私人有限公司|Mobile device and its circuit for lifting sensitivity|

---

WO2018028486A1|2016-08-08|2018-02-15|Guangdong Oppo Mobile Telecommunications Corp., Ltd.|Housing, method for manufacturing housing, and mobile terminal having housing|

---

WO2018028372A1|2016-08-08|2018-02-15|Guangdong Oppo Mobile Telecommunications Corp., Ltd.|Housing, method for manufacturing housing, and mobile terminal having housing|

---

US10181640B2|2016-08-11|2019-01-15|Apple Inc.|Electronic device antennas|

---

US10367252B2|2016-08-11|2019-07-30|Apple Inc.|Broadband antenna|

---

TWI630753B|2016-09-01|2018-07-21|群邁通訊股份有限公司|Antenna structure and wireless communication device with same|

---

US10461429B2|2016-09-06|2019-10-29|Apple Inc.|Switched antenna assembly|

---

KR20180035605A|2016-09-29|2018-04-06|삼성전자주식회사|Electronic device comprising antenna|

---

KR20180039425A|2016-10-10|2018-04-18|삼성전자주식회사|Antenna and electronic device including the same|

---

KR101843471B1|2016-10-12|2018-03-29|한양대학교 산학협력단|Antenna and communication terminal including the same|

---

JP6461218B2|2017-03-22|2019-01-30|ノキア テクノロジーズ オーユー|Wireless communication device|

---

US10236559B2|2017-04-14|2019-03-19|Futurewei Technologies, Inc.|Three-slotted antenna apparatus and method|

---

US10637161B2|2017-04-28|2020-04-28|Huawei Technologies Canada Co., Ltd.|Integration of circuit and antenna in front end|

---

TWI631771B|2017-06-09|2018-08-01|國立高雄科技大學|Multiband mimo monopole antenna module|

---

CN107546469A|2017-07-12|2018-01-05|瑞声科技有限公司|Antenna system and mobile terminal|

---

US10886607B2|2017-07-21|2021-01-05|Apple Inc.|Multiple-input and multiple-output antenna structures|

---

US10700416B2|2017-08-30|2020-06-30|Lg Electronics Inc.|Mobile terminal|

---

US10305453B2|2017-09-11|2019-05-28|Apple Inc.|Electronic device antennas having multiple operating modes|

---

US10312571B2|2017-09-11|2019-06-04|Apple Inc.|Electronic device having isolated antenna structures|

---

TWI659569B|2017-09-12|2019-05-11|華碩電腦股份有限公司|Monopole antenna|

---

CN109980333A|2017-12-27|2019-07-05|深圳富泰宏精密工业有限公司|Antenna structure and wireless communication device with the antenna structure|

---

KR20190088192A|2018-01-18|2019-07-26|삼성전자주식회사|Electronic device for sweeping phase of antenna|

---

US10916832B2|2018-02-20|2021-02-09|Apple Inc.|Electronic device slot antennas|

---

US10193597B1|2018-02-20|2019-01-29|Apple Inc.|Electronic device having slots for handling near-field communications and non-near-field communications|

---

CN108511905B|2018-04-19|2021-03-02|Oppo广东移动通信有限公司|Antenna system and mobile terminal|

---

US10734714B2|2018-05-29|2020-08-04|Apple Inc.|Electronic device wide band antennas|

---

US11205834B2|2018-06-26|2021-12-21|Apple Inc.|Electronic device antennas having switchable feed terminals|

---

KR102145126B1|2019-07-11|2020-08-14|홍성직|Case-integrated antenna of portable communication terminal and manufacturing method thereof|

---

CN112448140B|2019-08-30|2022-03-01|北京小米移动软件有限公司|Antenna module and terminal|

---

CN112531332A|2019-09-18|2021-03-19|华为技术有限公司|Mobile terminal|

---

KR102111390B1|2020-01-17|2020-05-15|이신구|Tunable coupler for repeater antenna and manufacturing method the same|

法律状态:
2014-07-01| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|

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2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-07-07| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2021-11-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2022-01-11| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 02/03/2012, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US13/041,905|2011-03-07|

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US13/041,905|US9166279B2|2011-03-07|2011-03-07|Tunable antenna system with receiver diversity|

---