• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for radio communication using multiple antennas and location variables, and to an apparatus for radio communication using multiple antennas and location variables. An apparatus for radio communication according to the invention comprises: 4 antennas (11) (12) (13) (14), the 4 antennas forming an antenna array (1); a radio device (5); a sensor unit (8) estimating a plurality of location variables; an antenna tuning apparatus (3) having 4 antenna ports (311) (321) (331) (341), each of the antenna ports being coupled to one of the antennas through an antenna link (21) (22); ) (23) (24), the antenna tuning apparatus having 4 radio accesses (312) (322) (332) (342), each of the radio ports being coupled to the radio device (5) through an interconnection (41) (42) (43) (44); a tuning control unit (7), the tuning control unit receiving a tuning instruction generated automatically inside the radio communication apparatus, the tuning control unit delivering a plurality tuning control signals to the antenna tuner.
    公开号:FR3018637A1
    申请号:FR1400606
    申请日:2014-03-13
    公开日:2015-09-18
    发明作者:Frederic Broyde；Evelyne Clavelier
    申请人:Tekcem SAS；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The invention relates to a method for radio communication using multiple antennas and location variables. The invention also relates to an apparatus for radio communication using multiple antennas and location variables. The radio signals received or transmitted can carry information of any kind, for example signals for the transmission of voice and / or images (television) and / or data. Radio signals received or transmitted may be used for any procedure, for example for broadcasting, for two-way point-to-point radiocommunications or for radiocommunications in a cellular network. STATE OF THE PRIOR ART The impedance presented by an antenna depends on the frequency and the electromagnetic characteristics of the volume surrounding the antenna. In particular, if the antenna is made in a portable transceiver, for example a mobile phone, the body of the user has an effect on the impedance presented by the antenna, and this impedance depends on the position of the body of the user. This is called "user interaction" ("user interaction"), or "hand effect" (in English: "hand effect") or "finger effect" (in English: "finger effect"). An antenna tuning apparatus ("antenna tuning apparatus" or "antenna tuner") is a passive apparatus intended to be inserted between a radio device, for example a radio transmitter or a radio receiver, and its antenna for to obtain that the impedance seen by the radio device is close to a desired value. FIG. 1 shows the block diagram of a typical use of such an antenna tuning apparatus (31) for tuning a single antenna (11), the antenna operating (or being used) in a given frequency band . The antenna tuning apparatus (31) comprises: an antenna access (311), the antenna access being coupled to the antenna (11) through an antenna link (21) also called "feeder", the antenna access (311) seeing, at a frequency in said given frequency band, an impedance called the impedance seen by the antenna access; a radio access (312), the radio access being coupled to the radio device (5) through an interconnection (41), the radio access (312) having, at said frequency in said given frequency band, an impedance called impedance presented by radio access; one or more adjustable impedance devices, each of the adjustable impedance devices having a reactance at said frequency in said given frequency band, the reactance of any of the adjustable impedance devices being adjustable and having an influence on the impedance presented by radio access. The radio device (5) is an active radio communication equipment such as a transmitter, a receiver or a transceiver. The antenna link (21) may for example be a coaxial cable. In some cases, when the antenna tuning apparatus (31) is placed near the antenna (11), the antenna link (21) is not present. The interconnection (41) may for example be a coaxial cable. In some cases, when the antenna tuning apparatus (31) is placed near the radio device (5), the interconnection (41) is not present. An antenna tuning apparatus behaves, at any frequency in said given frequency band, with respect to the antenna access and the radio access, substantially like a passive 2-port linear circuit. Here, "passive" is used in the sense of circuit theory, so that the antenna tuner does not provide amplification.In practice, the losses are undesirable for the signals applied to the access. antenna or radio access of an antenna tuning apparatus, in the given frequency band, thus an ideal antenna tuning apparatus is lossless for the signals applied to its antenna access or its radio access in the given frequency band Figure 2 shows a diagram of an antenna tuning apparatus (31) which could be used as shown in Figure 1 to tune a single antenna, the antenna being The apparatus shown in FIG. 2 comprises: an antenna port (311) having two terminals (3111) (3112), the antenna access being asymmetric (in English: single-ended); a radio access (312) having two terminals (3121) (3122), the radio access being asymmetric; an adjustable impedance positive (313) having a negative reactance and being coupled in parallel with the antenna access; a coil (315); an adjustable impedance device (314) having a negative reactance and being coupled in parallel with the radio access. An antenna tuning apparatus of the type shown in FIG. 2 is for example used in the article by F. Chan Wai Po, E. de Foucault, D. Morche, P. Vincent and E. Kerhervé entitled "A Novel Method for Synthesizing an Automatic Matching Network and its Control Unit ", published in IEEE Transactions on Circuits and Systems - Regular Papers, Vol. 58, No. 9, pp. 2225-2236 in September 2011. The article by Q. Gu, JR De Luis, AS Morris, and J. Hilbert entitled "An Analytical Algorithm for Pi-Network Impedance Tuners", published in IEEE 35 Transactions on Circuits and Systems -I : Regular Papers, vol. 58, No. 12, pp. 2894-2905 in December 2011, and the article by KR Boyle, E. Spits, Jongh MA, S. Sato, T. Bakker and A. van Bezooij titled "Self-Contained Adaptive Antenna Tuner for Mobile Phones", published in the Proceedings of the European Conference on Antenna and Propagation (EUCAP), pp. 1804-1808 in March 2012, consider an antenna tuning apparatus of a type similar to that shown in Figure 2, the main difference being that the coil (315) of Figure 2 is replaced by an impedance device adjustable, the adjustable impedance device being a variable inductor or an inductor connected in parallel with a variable capacitor.
    [0002] An antenna tuning apparatus may be used to compensate for a variation in the impedance seen by the antenna access, caused by a variation in the frequency of use, and / or to compensate for user interaction. The impedance matrix presented by a multiple access antenna array depends on the frequency and electromagnetic characteristics of the volume surrounding the antennas. In particular, if the multiple access antenna array is made in a portable transceiver simultaneously using multiple antennas for MIMO communication, for example a user equipment (in English: "user equipment" or "UE") d In an LTE radio network, the impedance matrix presented by the multiple access antenna array is affected by the user interaction.
    [0003] Another antenna tuning apparatus, which may be referred to as a "multiple antenna access antenna and multiple radio access tuner", is a passive apparatus for insertion between a radio device simultaneously using multiple antennas in the same frequency band, for example a radio transmitter or a radio receiver for MIMO communication, and said multiple antennas to obtain that the impedance matrix seen by the radio device is close to a desired value. FIG. 3 shows a block diagram of a typical use of such an antenna tuning apparatus (3) for simultaneously tuning 4 antennas (11) (12) (13) (14), the 4 antennas operating in a given frequency band, the 4 antennas forming an antenna array (1). In FIG. 3, the antenna tuning apparatus (3) comprises: n = 4 antenna access (311) (321) (331) (341), each of the antenna ports being coupled to one of the antennas (11) (12) (13) (14) through an antenna link (21) (22) (23) (24) also called "feeder", the light antenna accesses, at a frequency in said given frequency band, a matrix impedance called the matrix impedance seen by the accesses antenna; m = 4 radio access (312) (322) (332) (342), each of the radio ports being coupled to a radio device (5) through an interconnection (41) (42) (43) (44); radio having, at said frequency in said given frequency band, an impedance matrix called the impedance matrix presented by the radio accesses; p adjustable impedance devices, wherep is an integer typically greater than or equal to m, each of the adjustable impedance devices having a reactance at said frequency in said given frequency band, the reactance of any of the adjustable impedance devices being adjustable and having an influence on the impedance matrix presented by the radio accesses. An antenna tuning apparatus with multiple antenna access and multiple radio access behaves at any frequency in said given frequency band with respect to the n antenna accesses and the radio accesses substantially like a n + passive linear circuit. m access. Here, "passive" is again used in the sense of circuit theory, so that the antenna tuning apparatus with multiple antenna access and multiple radio access does not provide amplification. are undesirable for signals applied to the antenna access or radio access of a multiple antenna access antenna and multiple radio access device in the given frequency band. multiple antenna access and multiple radio access ideal is lossless for the signals applied to its antenna access or its radio access, in the given frequency band.
    [0004] Fig. 4 shows a diagram of an antenna tuning apparatus (3) which could be used as shown in Fig. 3 to tune 4 antennas, the antennas being used in a given frequency band. The apparatus shown in FIG. 4 comprises: n = 4 antenna access (311) (321) (331) (341), each of the antenna ports being asymmetrical; m = 4 radio access (312) (322) (332) (342), each of the radio access being asymmetrical; n adjustable impedance devices (301) each having a negative reactance and being each coupled in parallel with one of the antenna ports; n (n-1) / 2 controllable impedance devices (302) each having a negative reactance and each having a first terminal coupled to one of the antenna ports and a second terminal coupled to one of the antenna ports which is different from the antenna port to which the first terminal is coupled; n = m windings (303) each having a first terminal coupled to one of the antenna ports and a second terminal coupled to one of the radio ports; m adjustable impedance devices (304) each having a negative reactance and being each coupled in parallel with one of the radio ports; m (m-1) / 2 controllable impedance devices (305) each having a negative reactance and each having a first terminal coupled to one of the radio ports and a second terminal coupled to one of the radio ports which is different from the radio port which the first terminal is coupled to.
    [0005] An antenna tuning apparatus with multiple antenna access and multiple radio access of the type shown in FIG. 4 is disclosed in the French patent application No. 12/02542 entitled "Antenna tuning apparatus for an antenna array with multiple access ", and in the corresponding international application, number PCT / IB2013 / 058423 entitled" Antenna tuning apparatus for a multiport antenna array ".
    [0006] An antenna tuning apparatus with multiple antenna access and multiple radio access can be used to compensate for a variation of the impedance matrix seen by the antenna access, caused by a variation in the frequency of use, and / or to compensate for the user interaction.
    [0007] An antenna tuning apparatus may be such that the value of the reactance of any of its adjustable impedance devices is set manually. This type of manual tuning requires a competent operator, and is for example implemented to adjust some antenna tuning devices for amateur radio, having a single antenna access and a single radio access as shown in FIGS. 2. An antenna tuning apparatus may be such that the reactance of each of its adjustable impedance devices is electrically adjustable. Such an antenna tuning apparatus may be such that the value of the reactance of any of its adjustable impedance devices is automatically or adaptively adjusted. In this case, if the antenna tuning apparatus and the circuits providing automatic or adaptive adjustment of its adjustable impedance devices form a single device, this device may be referred to as an "automatic antenna tuner" or "Antenna tuning adaptive apparatus" (in English: "automatic antenna tuning apparatus" or "automatic antenna tuner" or "adaptive antenna tuner"). Automatic antenna tuning has been applied for a long time to an antenna tuning apparatus having a single antenna access and a single radio access, as shown in United States Patent No. 2,745,067 entitled "Automatic Impedance Matching Apparatus ", and in United States Patent No. 4,493,112 entitled" Antenna Tuner Discriminator ". Automatic antenna tuning applied to an antenna tuning apparatus having a single antenna access and a single radio access is also the subject of current research activities, a part of which is for example described in the said articles entitled "A Novel Method for Synthesizing an Automatic Matching Network and Its Control Unit", "An Analytical Algorithm for Pi-Network Impedance Tuners", and "A Self-Contained Adaptive Antenna Tuner for Mobile Phones". Automatic antenna tuning has recently been applied to a multiple antenna access antenna tuner and multiple radio access used for radio reception, as shown in US Patent No. 8,059,058 entitled " Antenna system and method for operating an antenna system ", and in the French patent application number 12/02564 entitled" Method and device for radio reception using an antenna tuning apparatus and a plurality of antennas ", corresponding to International Application No. PCT / I132013 / 058574 entitled "Method and device for radio reception using an antenna tuning apparatus and a plurality of antennas". In both cases, a typical automatic tuning process involves evaluating one or more representative quantities of the quality of a MIMO link for a finite set of chord instructions, each chord instruction corresponding to a value of the reactance of each of the adjustable impedance devices. However, if we consider, for example, that the reactance of each of the adjustable impedance devices shown in FIG. 4 can take 8 values, the automatic tuning process may involve the evaluation of one or more quantities representative of the quality of the the MIMO link, for 820 statements of agreement. This automatic tuning process would require so much time that it can not be implemented in practice. Automatic antenna tuning has also recently been applied to a multiple antenna access antenna tuner and multiple radio access used for radio transmission, as shown in French Patent Application No. 13/00878 entitled " A method and apparatus for automatically tuning an impedance matrix, and radio transmitter using this apparatus ", corresponding to the international application number PCT / IB2014 / 058933 entitled" Method and apparatus for automatically tuning an impedance matrix, and radio transmitter using this apparatus ". In this case, a typical automatic tuning process involves either a computationally intensive determination of a tuning instruction such that an immittance matrix presented by the radio access is substantially equal to a desired immittance matrix. or evaluating a standard of a matrix, for example a matrix of voltage reflection coefficients at radio access, for a finite set of tuning instructions. This automatic tuning process may require either a large computing resource or too much time, such as the typical automatic tuning process discussed above for radio reception. PRESENTATION OF THE INVENTION The subject of the invention is a method for radio communication and an apparatus for radio communication using an antenna tuning apparatus and a plurality of antennas, without the limitations mentioned above of the known techniques.
    [0008] The method according to the invention is a method for radio communication with several antennas in a given frequency band, using an apparatus for radio communication including n antennas, where n is an integer greater than or equal to 2, the method comprising the following steps: estimating a plurality of variables, each of said variables being called "location variable", each of the location variables depending on the distance between a part of a human body and a zone of the radio communication apparatus; coupling said n antennas, directly or indirectly, to an antenna tuning apparatus having n antenna access, m radio access, where m is an integer greater than or equal to 2, and p devices with adjustable impedance, where p is a an integer greater than or equal to 2m, each of the adjustable impedance devices having one frequency reactance in said given frequency band, the reactance of any of the adjustable impedance devices being adjustable by electrical means; generating a "tuning instruction", each of the location variables having an influence on the tuning instruction, the tuning instruction having an effect on the reactance of each of the adjustable impedance devices. Each of said antennas can be coupled, directly or indirectly, to one and only one of the antenna ports of the antenna tuner. For example, indirect coupling may be coupling through an antenna link and / or through a directional coupler. The antenna tuning apparatus is used to tune the so-called n antennas. It is possible for at least one of the location variables to be an output of a pressure-sensitive sensor exerted by a portion of a human body. Thus, it is possible for at least one of the location variables to be the output of a human body. A circuit having a switch employing a non-latching, one-touch mechanical system, the state of which changes while sufficient pressure is exerted by a portion of a human body. It is also possible for at least one of the location variables to be the output of a circuit comprising another type of electromechanical sensor responsive to a pressure exerted by a part of a human body, for example a microelectromechanical sensor (in particular English: "MEMS sensor"). It is possible that at least one of the location variables is an output of a proximity sensor, such as a proximity sensor dedicated to the detection of a human body. Such a proximity sensor may for example be a capacitive proximity sensor, or an infrared proximity sensor using reflected light intensity measurements, or an infrared proximity sensor using flight time measurements (in English: of-flight), which are well known to specialists. It is possible that the set of possible values of at least one of the location variables is a finite set. It is possible for at least one of the location variables to be a binary variable, that is to say such that the set of possible values of the at least one of the location variables has exactly two elements. For example, a capacitive proximity sensor dedicated to the detection of a human body (eg Semtech's SX9300 device) can be used to obtain a binary variable, which indicates whether or not a human body has been detected in the vicinity. an area of the device for radio communication. It is possible that the set of possible values of any of the location variables is a finite set. However, it is possible that the set of possible values of at least one of the location variables is an infinite set, and it is possible that the set of possible values of at least one of the location variables is a set. continued. It is possible that the set of possible values of at least one of the location variables has at least three elements. For example, an infrared proximity sensor using flight time measurements and dedicated to the evaluation of the distance to a human body (for example the VL6180 device from STMicroelectronics) can be used to obtain a location variable such as set of possible values of the location variable has at least three elements, one of the values meaning that no human body has been detected, each of the other values corresponding to a different distance between an area of the radio communication apparatus and the closest part of a detected human body. It is possible that the set of possible values of any of the location variables has at least three elements. It is possible that at least one of the location variables is an output of a sensor 5 that is not dedicated to the detection of a human body. For example, it is possible that at least one of the location variables is determined by a change of state of a switch of a keyboard, which reveals the position of a human finger. For example, it is possible that at least one of the location variables is determined by a change of state of an output of a touch screen, which reveals the position of a human finger. Such a touch screen can use any of the available technologies, such as a resistive touch screen, a capacitive touch screen or a surface acoustic wave touch screen, etc. It is said above that each of the location variables depends on the distance between a portion of a human body and an area of the radio communication apparatus. This should be interpreted as meaning: each of the location variables is such that there is at least one configuration in which the distance between a portion of a human body and an area of the radio communication apparatus has an effect on said each of the location variables. However, it is possible that there are one or more configurations in which the distance between a portion of a human body and an area of the radio communication apparatus has no effect on said each of the location variables. For example, the distance between a portion of a human body and an area of the radio communication apparatus has no effect on a switch if there is no force exerted directly or indirectly by the human body on the switch. For example, the distance between a portion of a human body and an area of the radio communication apparatus has no effect on a proximity sensor if the human body is out of range of the sensor. The tuning instruction may include any type of electrical signal and / or any combination of such electrical signals. The tuning instruction is generated automatically within the radio communication apparatus, each of the location variables having an influence on the tuning instruction. Thus, the chord statement is a function of the location variables. The chord instruction may also be a function of other variables or quantities. An apparatus implementing the method according to the invention is an apparatus for radio communication using several antennas in a given frequency band, the apparatus for radio communication including n antennas, where n is an integer greater than or equal to 2, apparatus for radio communication comprising: a location unit, the location unit estimating a plurality of variables, each of said variables being referred to as a "location variable", each of the location variables being dependent on the distance between a portion of a human body and an area of the radio communication apparatus; a processing unit, the processing unit outputting a "tuning instruction", each of the location variables having an influence on the tuning instruction; an antenna tuning apparatus having n antenna access, m radio access and p devices with adjustable impedance, where m is an integer greater than or equal to 2 and where p is an integer greater than or equal to 2 m, each of the impedance devices adjustable reactor having a frequency reactance in said given frequency band, the reactance of any of the adjustable impedance devices being adjustable by electrical means; a tuning control unit, the tuning control unit receiving the tuning instruction, the tuning control unit delivering a plurality of tuning control signals to the tuning apparatus; antenna tuning, the tuning control signals being determined according to the tuning instruction, the reactance of each of the adjustable impedance devices being mainly determined by at least one of the tuning control signals. The radio accesses have, at said frequency in said given frequency band, an impedance matrix called "the impedance matrix presented by the radio accesses", and the antenna accesses see, at said frequency in said given frequency band, an impedance matrix called "the impedance matrix seen by the antenna access". It is assumed that said antenna tuning apparatus behaves, at any frequency in said given frequency band, with respect to its antenna access and radio access, substantially as a passive linear device (where "passive" is used in the sense of circuit theory.) More precisely, said antenna tuning apparatus behaves at any frequency in the given frequency band with respect to n antenna access and radio access As a consequence of the linearity, it is possible to define the impedance matrix presented by the radio accesses.As a consequence of the passivity, the antenna tuning apparatus does not provide No Amplifier An adjustable impedance device is a component comprising two terminals which behave substantially like a passive linear bipole, and which are therefore completely characterized by impedance that can depend on the frequency, this impedance being adjustable. An adjustable impedance device may be mechanically adjustable, for example a variable resistor, a variable capacitor, an array having a plurality of capacitors, and one or more switches or switches used to make different capacitors in the array contribute to the reactance, an inductor variable, a network comprising a plurality of inductors and one or more switches or switches used to make different network inductances contribute to the reactance, or an array comprising a plurality of open or short-circuit transmission line sections ( in English: "stubs") and one or more switches or switches used to make different sections of the transmission line of the network contribute to the reactance. We note that all the examples in this list, except the variable resistor, are intended to produce an adjustable reactance. An adjustable impedance device having an electrically adjustable reactance may be such as to provide only at said frequency in said given frequency band a finite set of reactance values, this characteristic being for example obtained if the Adjustable impedance is: - a network having a plurality of capacitors or sections of transmission line in open circuit and one or more electrically controlled switches or switches, such as electromechanical relays, or micro-electromechanical switches (in English: "MEMS switches "), or PIN diodes or insulated gate field effect transistors (MOSFETs), used to make different capacitors or different sections of the open circuit transmission line of the network contribute to the reactance; or - a network comprising a plurality of short-circuited transmission line coils or sections 15 and one or more electrically controlled switches or switches used to make different coils or different short-circuit transmission line sections of the network contribute to each other. the reactance. An adjustable impedance device having an electrically adjustable reactance may be such as to provide, at said frequency in said given frequency band, a continuous set of reactance values, this characteristic being for example obtained if the impedance device adjustable is based on the use of a diode with variable capacity; or a variable capacity MOS component (in English: "MOS varactor"); or a microelectromechanical component with variable capacity (in English: "MEMS varactor"); or a ferroelectric component with variable capacity (in English: "ferroelectric varactor"). The antenna tuning apparatus may be such that the reactance of any of the adjustable impedance devices has, at said frequency in said given frequency band, whether the impedance matrix seen by the antenna access is equal to a given diagonal impedance matrix, an influence on the impedance matrix presented by the radio accesses. This should be interpreted as meaning: the antenna tuning apparatus may be such that, at said frequency in said given frequency band, there is a diagonal impedance matrix called the given diagonal impedance matrix, the given diagonal impedance matrix being such that, if the impedance matrix seen by the antenna access is equal to the given diagonal impedance matrix, then the reactance of any of the adjustable impedance devices has an influence on the impedance matrix presented by the radio accesses.
    [0009] BRIEF DESCRIPTION OF THE DRAWINGS Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention, given by way of non-limiting examples, and represented in the accompanying drawings, in which: FIG. 1 shows a block diagram of a typical use of an antenna tuning apparatus for tuning a single antenna, and has already been commented in the section devoted to the presentation of the state of the art; FIG. 2 shows a diagram of an antenna tuning apparatus which could be used as shown in FIG. 1 to tune a single antenna, and has already been commented on in the section devoted to the presentation of the state of the antenna. the technique ; FIG. 3 represents a block diagram of a typical use of an antenna tuning apparatus for simultaneously tuning 4 antennas, and has already been commented on in the section devoted to the presentation of the state of the art; FIG. 4 shows a diagram of an antenna tuning apparatus that could be used as shown in FIG. 3 for simultaneously tuning 4 antennas, and has already been commented on in the section devoted to the presentation of the state. of the technique; FIG. 5 represents a block diagram of a transceiver for radio communication according to the invention, which uses 4 antennas simultaneously; Figure 6 shows 4 sensors, 4 antennas and the locations of their centers; FIG. 7 represents a part of a block diagram of a transceiver for radio communication according to the invention; Figure 8 shows the locations of the 4 antennas of a mobile phone; Fig. 9 shows a first typical usage configuration (right hand and head configuration); Figure 10 shows a second typical usage configuration (two-handed configuration); Fig. 11 shows a third typical usage configuration (right hand configuration only). DETAILED DESCRIPTION OF CERTAIN EMBODIMENTS First Embodiment. According to a first embodiment of an apparatus according to the invention, given by way of non-limiting example, we have shown in FIG. 5 the block diagram of a portable device for radio communication, the apparatus for radio communication being a transceiver comprising: n = 4 antennas (11) (12) (13) (14), the 4 antennas operating simultaneously in a given frequency band, the 4 antennas forming an antenna array (1) ; a radio device (5) which consists of all parts of the radio communication apparatus not shown elsewhere in Figure 5; a sensor unit (8) estimating a plurality of location variables; an antenna tuning apparatus (3), the antenna tuning apparatus being an antenna tuning apparatus having multiple antenna access and multiple radio access, the antenna tuning apparatus comprising = 4 antenna access (311) (321) (331) (341), each of the antenna ports being coupled to one of the antennas through an antenna link (21) (22) (23) (24), the apparatus antenna tuner having m = 4 radio accesses (312) (322) (332) (342), each of the radio ports being coupled to the radio device (5) through an interconnection (41) (42) (43) (44), the antenna tuning apparatus having adjustable impedance devices, where p is an integer greater than or equal to 2m; a tuning control unit (7), the tuning control unit receiving a "tuning instruction" automatically generated inside the radio communication apparatus, the tuning control unit outputting a plurality of "tuning control signals" to the antenna tuning apparatus, the tuning control signals being determined according to the tuning instruction, the reactance of each of the adjustable impedance devices. being mainly determined by at least one of the chord control signals. The sensor unit (8) estimates a plurality of location variables each depending, in a given usage pattern, on the distance between a portion of a human body and an area of the radio communication apparatus. As shown in FIG. 6, the sensor unit (8) has four sensors (81) (82) (83) (84). The first antenna (11) has its center located at a point (111) of the radio communication apparatus, and one of the sensors (81) estimates a location variable which depends, in a given usage configuration, on the distance between a portion of a human body and an area adjacent to that point (111). In the same way, the second antenna (12) has its center located at a point (121) of the radio communication apparatus, and one of the sensors (82) estimates a location variable which depends, in a usage configuration. given, the distance between a part of a human body and an area close to this point (121). In the same way, the third antenna (13) has its center located at a point (131) of the radio communication apparatus, and one of the sensors (83) estimates a location variable which depends, in a usage configuration. given, the distance between a part of a human body and an area adjacent to this point (131). In the same way, the fourth antenna (14) has its center located at a point (141) of the radio communication apparatus, and one of the sensors (84) estimates a location variable which depends, in a usage configuration. given, the distance between a part of a human body and an area near this point (141). Each of said zones may be a part of the space occupied by the corresponding sensor, this space being inside the space occupied by the radio communication apparatus, so that in this case each of said zones has a volume well below the volume of the device for radio communication. Thus, for each of the antennas, at least one of the location variables may depend on the distance between a portion of a human body and a small area near said each of the antennas. If an appropriate sensor is used, said area may be a point, or substantially a point. The sensor unit (8) evaluates (or equivalently estimates) a plurality of location variables each depending, in a given usage pattern, on the distance between a portion of a human body and an area of the device for radio communication. However, it is possible that one or more other location variables each depending, in a given usage pattern, on the distance between a portion of a human body and an area of the radio communication apparatus, are not estimated by the sensor unit. Thus, the sensor unit (8) can be considered as part of a location unit that estimates (or evaluates) a plurality of location variables each dependent on the distance between a portion of a human body and a zone. of the radio communication apparatus, this part of the locating unit possibly being the whole of the locating unit. The tuning instruction is generated automatically inside the radio device (5).
    [0010] More precisely, the radio device (5) comprises a processing unit (not appearing in FIG. 5) which delivers the tuning instruction, each of the location variables having an influence on the tuning instruction. For example, the tuning instruction can be determined from a set of tuning instructions stored in a lookup table (in English: "lookup table" or "look-up table") performed in the processing unit, based on the location variables and on the frequencies used for the radio communication with the antennas (11) (12) (13) (14). The chord statement is generated repeatedly. For example, the chord statement can be generated periodically, for example every 10 milliseconds. The apparatus according to the invention is a portable device for radio communication, which can be held by a user while he is operating. According to the "Radio Regulations" published by the I.T.U, this type of device for radio communication can be called mobile device for radio communication. The body of the user has an effect on the impedance matrix presented by the antenna array, and this impedance matrix depends on the position of the user's body. As mentioned above in the section on prior art, this is called "user interaction", or "hand effect" or "hand effect". finger effect "(in English:" finger effect "), as the effect of the body of the user on the impedance presented by a single antenna. The specialist understands that since the impedance matrix seen by the antenna access is, in many configurations of use, only determined by the frequency of operation and by the user interaction, it is possible to construct a look-up table which can to be used to determine a tuning instruction based on the location variables and frequencies used for radio communication with the antennas (11) (12) (13) (14). The specialist knows how to build and how to use such a lookup table. The specialist understands that this overcomes the aforementioned limitations of the known techniques, because in this first embodiment, the tuning instruction is generated quickly and without requiring a large computing resource. The specialist understands the difference between the apparatus according to the invention and the state-of-the-art radio communication apparatus using an antenna and one or more location variables, disclosed in the US Pat. America number 8,204,446 entitled "Adaptive Antenna Tuning Systems and Methods". A first major difference is that the invention uses an automatic antenna tuning process for a multiple antenna access antenna and multiple radio access tuner apparatus, such a process being completely different from a tuning process. antenna antenna for the antenna tuning apparatus having a single antenna access and a single radio access considered in said US Patent No. 8,204,446. This difference is due to the interactions between the antennas directly or indirectly coupled to the antenna accesses of the antenna tuning apparatus with multiple antenna access and multiple radio access. A second major difference is that the problem to be solved in the case of the apparatus according to the invention, namely that the prior art automatic tuning processes for an antenna tuning apparatus to multiple antenna access and multiple radio access typically require either a large computing resource, or too much time, does not exist for the antenna tuner having a single antenna access and a single radio access considered in said patent of United States of America number 8,204,446. A third major difference is that, to solve this problem, a plurality of location variables is needed. This is because, in order to generate a suitable tuning instruction, based on the location variables and on the frequencies used for the radio communication with the antennas, it is necessary that, for each of the antennas, at least one of the variables location depends on the distance between a portion of a human body and a small area near said each of the antennas. In this first embodiment, n = m = 4 Thus, it is possible for n to be greater than or equal to 3, it is possible for n to be greater than or equal to 4, it is possible for m to be greater than or equal to 3, and it is possible that m is greater than or equal to 4. Second embodiment.
    [0011] The second embodiment of an apparatus according to the invention, given by way of non-limiting example, also corresponds to the portable device for radio communication shown in FIG. 5, and all the explanations provided for the first embodiment. are applicable to this second embodiment. In this second embodiment, the antenna tuning apparatus (3) is an antenna tuning apparatus disclosed in said French patent application number 12/02542 and said international application PCT / B2013 / 058423. Thus, the antenna tuning apparatus (3) is such that the reactance of any of the adjustable impedance devices has, at said frequency in said given frequency band, the impedance matrix seen by the antenna accesses. is equal to a given diagonal impedance matrix, an influence on the impedance matrix presented by the radio accesses, and such that the reactance of at least one of the adjustable impedance devices 10a, at said frequency in said given frequency band, if the impedance matrix seen by the antenna access is equal to the given diagonal impedance matrix, an influence on at least one non-diagonal element of the impedance matrix presented by the radio accesses. This should be interpreted as meaning: the antenna tuning apparatus is such that, at said frequency in said given frequency band, there is a diagonal impedance matrix called the given diagonal impedance matrix, the given diagonal impedance matrix being such that, if an impedance matrix seen by the antenna access is equal to the given diagonal impedance matrix, then (a) the reactance of any of the adjustable impedance devices has an influence on an impedance matrix presented by the radio accesses, and (b) the reactance of at least one of the adjustable impedance devices has an influence on at least one non-diagonal element of the impedance matrix presented by the radio accesses. The specialist understands that the antenna tuning apparatus (3) can not consist of a plurality of independent and uncoupled antenna tuning apparatuses each having a single antenna access and a single radio access, because in this case, if the impedance matrix seen by the antenna access is equal to any diagonal impedance matrix, then the impedance matrix presented by the radio accesses is a diagonal matrix, whose non-diagonal elements can not be influenced by what whether it be. In addition, the antenna tuning apparatus (3) is such that, at said frequency in said given frequency band, if the impedance matrix seen by the antenna access is equal to a given non-diagonal impedance matrix, an application (in the mathematical sense) matching the impedance matrix presented by the radio accesses to the reactants is defined, the application having, at a given value of each of the reactants, a partial derivative with respect to each of the reactants, a sub the vector space generated by the p partial derivatives being defined in the set of square complex matrices of order m considered as a real vector space, any diagonal complex matrix of order m having the same diagonal elements as at least one element of the vector subspace generated by the p partial derivatives. This should be interpreted as meaning: the antenna tuning apparatus is such that, at said frequency in said given frequency band, there exists a non-diagonal impedance matrix called the given non-diagonal impedance matrix, the non-diagonal impedance matrix given that, if an impedance matrix seen by the antenna access is equal to the given non-diagonal impedance matrix, then an application matching an impedance matrix presented by the radio accesses to the reactances is defined, the application having, at a given value of each of the reactants, a partial derivative with respect to each of the reactants, a vector subspace generated by the partial derivatives p being defined in the set of square complex matrices of order m considered as a real vector space , any diagonal complex matrix of order m having the same diagonal elements as at least one element of the subset vector space generated by the p partial derivatives.
    [0012] Thus, the skilled person understands that any small variation in the antenna array impedance matrix, produced by a change of frequency of use or a change in the medium surrounding the antennas, may be at least partially compensated by a new adjustment of the adjustable impedance. More generally, a specialist understands that, in order to obtain that any diagonal complex matrix of order m has the same diagonal elements as at least one element of the vector subspace generated by the p partial derivatives, it is necessary that the dimension of the subset the vector space generated by the p partial derivatives considered as a real vector space is greater than or equal to the dimension of the vector subspace of the diagonal complex matrices of order m considered as a real vector space. Since the dimension of the vector subspace generated by the p partial derivatives considered as a real vector space is less than or equal to p, and since the dimension of the vector subspace of the diagonal complex matrices of order m considered as a real vector space is equal to 2m, the necessary condition implies that p is an integer greater than or equal to 2m. This is why the requirement "p is an integer greater than or equal to 2 m" is an essential characteristic of the invention. Third embodiment. The third embodiment of an apparatus according to the invention, given by way of non-limiting example, also corresponds to the portable device for radio communication shown in FIG. 5, and all the explanations provided for the first embodiment. and the second embodiment are applicable to this third embodiment. In addition, the antenna tuning apparatus (3) used in this third embodiment corresponds to the diagram shown in FIG. 4, and all the explanations given in FIG. 4 in the section on the state of the art. prior art are applicable to this third embodiment. It is possible that mutual induction exists between the windings (303). In this case, the inductance matrix of the windings is not a diagonal matrix. All adjustable impedance devices (301) (302) (304) (305) are electrically adjustable, but the circuits and control links necessary to determine the reactance of each of the adjustable impedance devices are not shown on the display. figure 4. In this third embodiment, we have n = m and we use p = m (m + 1) = 20 devices with adjustable impedance.
    [0013] The specialist understands that, at a frequency at which the antenna tuning apparatus is intended to function, if the impedance matrix seen by the antenna access is a diagonal matrix having all its diagonal elements equal to 50 S-2, the The reactance of any of the adjustable impedance devices influences the impedance matrix presented by the radio accesses, and the reactance of at least one of the adjustable impedance devices influences one or more of the non-diagonal elements of the matrix impedance presented by radio access. Since the impedance matrix seen by the antenna ports is a given symmetric complex matrix, it can be shown that, for suitable component values, the p partial derivatives defined above in the section on the second embodiment are linearly independent in the real vector space of square complex matrices of order m, this vector space, denoted E, being of dimension 2m2. Thus, the vector subspace generated by the p partial derivatives in E is a vector subspace of dimension p equal to the set of symmetric complex matrices of order m. Here, any symmetric complex matrix of order m is an element of the vector subspace generated by the p partial derivatives. Consequently, every diagonal complex matrix of order m has the same diagonal elements as at least one element of the vector subspace generated by the p partial derivatives. The reactance of an adjustable impedance device may depend on the ambient temperature for certain types of adjustable impedance devices. If such a type of adjustable impedance device is used in the antenna tuner, it is possible that the tuning control signals are determined according to the tuning instruction and as a function of the temperature. , to compensate for the effect of the temperature on the reactance of each of the adjustable impedance devices. The skilled artisan understands that any small variation in the antenna array impedance matrix, produced by a change in frequency of use or a change in the medium surrounding the antennas, may be compensated for by a new adjustment of the adjustable impedance devices. Thus, it is always possible to compensate the user interaction. If the adjustable impedance devices (302) each having a first terminal coupled to one of the antenna ports and a second terminal coupled to one of the antenna ports which is different from the antenna port to which the first terminal is coupled were not present in FIG. 4, if the adjustable impedance devices (305) each having a first terminal coupled to one of the radio ports and a second terminal coupled to one of the radio ports which is different from the radio access to which the first terminal is coupled; were not present in Figure 4, and if mutual induction did not exist between the windings (303), then the antenna tuning apparatus (3) having n = 4 antenna access and m = 4 radio access would in fact consist of n = 4 antenna tuning devices each having a single antenna access and a single radio access, these antenna tuning devices each having a single antenna access and a single radio access being independent e t not coupled. In this case, the method according to the invention can become a method for radio communication with several antennas in a given frequency band, using a radio communication apparatus including n antennas, where n is an integer greater than or equal to 2, the method comprising the steps of: estimating a plurality of variables, each of said variables being called a "location variable", each of the location variables depending on the distance between a portion of a human body and an area of the radio communication apparatus ; coupling said n antennas, directly or indirectly, to n antenna tuning apparatus, each of said antenna tuning apparatus having antenna access, radio access, and at least 2 adjustable impedance devices, each of adjustable impedance devices of said each of said antenna tuning apparatus having a frequency reactance in said given frequency band, the reactance of any of the adjustable impedance devices being electrically adjustable; generating a "tuning instruction", each of the location variables having an influence on the tuning instruction, the tuning instruction having an effect on the reactance of each of the adjustable impedance devices. In this method, each of the antennas can be coupled, directly or indirectly, to one and only one of the antenna ports of the n antenna tuning devices. An apparatus implementing this method is an apparatus for radio communication using several antennas in a given frequency band, the apparatus for radio communication including n antennas, where n is an integer greater than or equal to 2, the apparatus for communication radio comprising: a locating unit, the locating unit estimating a plurality of variables, each of said variables being called "locational variable", each of the 30 location variables depending on the distance between a part of a human body and an area of the apparatus for radio communication; a processing unit, the processing unit outputting a "tuning instruction", each of the location variables having an influence on the tuning instruction; 35 n antenna tuning apparatus, each of said antenna tuning apparatus having antenna access, radio access, and at least 2 adjustable impedance devices, each of the adjustable impedance devices of said each of said apparatuses; antenna tuning having a frequency reactance in said given frequency band, the reactance of any of the adjustable impedance devices being adjustable by electrical means; a tuning control unit, the tuning control unit receiving the tuning instruction, the tuning control unit delivering a plurality of tuning control signals to the tuning apparatus; antenna tuning, the tuning control signals being determined according to the tuning instruction, the reactance of each of the adjustable impedance devices being mainly determined by at least one of the tuning control signals. Fourth embodiment.
    [0014] The fourth embodiment of an apparatus according to the invention, given by way of non-limiting example, also corresponds to the portable device for radio communication shown in FIG. 5, and all the explanations provided for the first embodiment. are applicable to this fourth embodiment. In this fourth embodiment, each of the location variables each dependent on the distance between a portion of a human body and a zone of the radio communication apparatus and each having an influence on the tuning instruction is estimated by the sensor unit (8). Therefore, the sensor unit (8) forms a location unit which estimates a plurality of location variables each dependent on the distance between a portion of a human body and an area of the radio communication apparatus.
    [0015] Fifth embodiment. The fifth embodiment of an apparatus according to the invention, given by way of non-limiting example, also corresponds to the portable apparatus for radio communication shown in FIG. 5, and all the explanations provided for the first embodiment. are applicable to this fifth embodiment.
    [0016] In this fifth embodiment, as shown in Fig. 7, the radio device (5) has a processing unit (56) which outputs the tuning instruction to the tuning control unit (7). The processing unit (56) receives location variables from the sensor unit (8). The processing unit (56) also receives one or more location variables of the user interface, specifically the input section of the user interface (55). The input section of the user interface (55) is the portion of the user interface that allows the user to provide inputs to the device for radio communication. The input section of the user interface uses a touch screen. Each location variable evaluated by the input section of the user interface is determined by a change of state of an output of the touch screen, which reveals the position of a human finger.
    [0017] In this fifth embodiment, each of the location variables each dependent on the distance between a portion of a human body and a zone of the radio communication apparatus and each having an influence on the tuning instruction is estimated by the sensor unit (8) or the input section of the user interface (55). Therefore, the sensor unit (8) and the input section of the user interface (55) form a locator unit which estimates a plurality of location variables each dependent on the distance between a part of a body human and a zone of the apparatus for radio communication. Sixth embodiment. The sixth embodiment of an apparatus according to the invention, given by way of nonlimiting example, also corresponds to the portable device for radio communication shown in FIG. 5, and all the explanations provided for the first mode of communication. embodiment are applicable to this sixth embodiment. In this sixth embodiment, the device for radio communication is a mobile phone. Figure 8 is a drawing of a rear view of the mobile phone (9). Figure 8 shows the point (111) where the center of the first antenna (11) is located, the point (121) where the center of the second antenna (12) is located, the point (131) where the center of the the third antenna (13) is located, and the point (141) where the center of the fourth antenna (14) is located. A finite set of typical usage patterns is defined. For example, Fig. 9 shows a typical first usage configuration, which may be referred to as "right hand and head configuration"; Fig. 10 shows a second typical usage configuration, which may be referred to as a "two-handed configuration"; and Fig. 11 shows a typical third usage configuration, which may be referred to as "right hand only configuration". In an actual use configuration, the location variables evaluated by the sensor (81) made near the point (111) where the center of the first antenna (11) is located, by the sensor (82) made near the point (121) where the center of the second antenna (12) is located, by the sensor (83) located near the point (131) where the center of the third antenna (13) is located, and by the sensor (84) made near the point (141) where the center of the fourth antenna (14) is located are used to determine the typical usage pattern closest to the actual usage pattern. The tuning instruction is then determined from a set of predetermined tuning instructions which are stored in a look-up table in the processing unit, based on the typical usage pattern. closer and on the frequencies used for the radio communication with the antennas (11) (12) (13) (14). The specialist understands how to build and use such a look-up table. The specialist understands the advantage of defining and using a set of typical usage patterns, which must be large enough to cover all relevant cases, and small enough to avoid an overly large look-up table.
    [0018] It has been shown that, for a radio communication apparatus using a plurality of antennas coupled to a multiple antenna access antenna and multiple radio access tuner apparatus, more than two typical use patterns must be defined, if although a single location variable can not be used to determine a typical closest use pattern. Therefore, in the method according to the invention, the requirement that "a plurality of location variables is estimated" is an essential feature of the invention. Therefore, in the apparatus according to the invention, the requirement that "the location unit estimates a plurality of location variables" is an essential feature of the invention. In particular, according to the invention, the number of location variables may be greater than or equal to 3, as in the sixth embodiment. In particular, according to the invention, the number of location variables can be greater than or equal to 4, as in the sixth embodiment. In addition, in order to be able to determine a closest typical usage pattern, it is necessary to use location variables dependent on the distance between a portion of a human body and different areas of the apparatus for communication. radio. More precisely, it is necessary that two of the location variables, denoted A and B, exist, the location variable A depending on the distance between a part of a human body and an area X of the radio communication apparatus, the location variable B dependent on the distance between a portion of a human body and a zone Y of the radio communication apparatus, such that X and Y are distinct, or preferably such that X and Y have an empty intersection. As explained above, this result can be obtained by using a location unit comprising a plurality of sensors, such as proximity sensors, located at different locations of the radio communication apparatus, each of said sensors estimating one or more of the location variables. In particular, according to the invention, the number of sensors each estimating one or more of the location variables may be greater than or equal to 3, as in the sixth embodiment. In particular, according to the invention, the number of sensors each estimating one or more of the location variables may be greater than or equal to 4, as in the sixth embodiment. A chord statement is generated periodically at the end of a chord sequence and is valid until a next chord statement is generated at the end of a next chord sequence. In this sixth embodiment, the tuning instruction is a function of the location variables and frequencies used for radio communication with the antennas. The tuning instruction may also be a function of other variables or quantities such as: information on the efficiency of one or more of the antennas, information on the isolation between the antennas, a or more operational parameters of the apparatus for radio communication, and / or one or more performance metrics of the apparatus for radio communication. The specialist knows how to obtain and use such other variables or quantities. The following seventh, eighth and ninth embodiments are examples where such other variables or quantities are obtained and used. Seventh embodiment. The seventh embodiment of an apparatus according to the invention, given by way of non-limiting example, is an apparatus for radio communication comprising a radio receiver implementing a method for radio reception with several antennas in a given frequency band. , the radio receiver including n antennas, where n is an integer greater than or equal to 2, the method comprising the following steps: estimating a plurality of variables, each of said variables being called "localization variable", each of the dependent location variables the distance between a part of a human body and an area of the radio communication apparatus; coupling said n antennas, directly or indirectly, to an antenna tuning apparatus having n antenna access, m radio access, where m is an integer greater than or equal to 2, and p devices with adjustable impedance, where p is a an integer greater than or equal to 2m, each of the adjustable impedance devices having one frequency reactance in said given frequency band, the reactance of any of the adjustable impedance devices being adjustable by electrical means; processing a plurality of digital signals to estimate one or more representative quantities of a channel matrix; issuing a "tuning instruction", the tuning instruction being a function of the location variables and said one or more representative quantities of a channel matrix, each of the location variables having an influence on the instruction of agree, the tuning instruction having an effect on the reactance of each of the adjustable impedance devices. For example, as in said French patent application number 12/02564 and said international application number PCT / IB2013 / 058574, the method may be such that, each of the radio accesses delivering a signal, each of the digital signals is mainly determined by one and only one of the signals delivered by the radio accesses, and such that the channel matrix is a channel matrix between a plurality of signals transmitted by a transmitter and the m signals delivered by the radio accesses. For example, one or more representative quantities of a channel capacity may be calculated based on said representative quantities of a channel matrix, and the tuning instruction may be delivered based on the location variables and those or a plurality of representative quantities of a channel capacity, each of the location variables having an influence on the tuning instruction. The method may be such that an adaptive process is implemented during one or more training sequences. A training sequence may include transmitting a plurality of quasi-orthogonal or orthogonal signals. The tuning instruction selected during the last completed training sequence is used for radio reception.
    [0019] The specialist understands that the antenna tuning obtained in this seventh embodiment may be more accurate than an antenna tuning in which the tuning instruction is only a function of the location variables. The specialist also understands that the antenna tuning obtained in this seventh embodiment can be simultaneously accurate and such that the tuning instruction is generated quickly and without requiring a large computing resource.
    [0020] Eighth embodiment. The eighth embodiment of an apparatus according to the invention, given by way of non-limiting example, is an apparatus for radio communication comprising a radio transmitter implementing a method for radio transmission with several antennas in a given frequency band. , the radio transmitter including n antennas, where n is an integer greater than or equal to 2, the method comprising the following steps: estimating a plurality of variables, each of said variables being called "location variable", each of the location variables dependent on the distance between a portion of a human body and an area of the radio communication apparatus; coupling said n antennas, directly or indirectly, to an antenna tuning apparatus having n antenna access, m radio access, where m is an integer greater than or equal to 2, and p devices with adjustable impedance, where p is a an integer greater than or equal to 2m, each of the adjustable impedance devices having one frequency reactance in said given frequency band, the reactance of any of the adjustable impedance devices being adjustable by electrical means; estimating q actual quantities dependent on an impedance matrix presented by the radio accesses, where q is an integer greater than or equal to m, using at least m different excitations successively applied to the radio accesses; issuing a "tuning instruction", the tuning instruction being a function of the location variables and said q real quantities dependent on an impedance matrix presented by the radio accesses, each of the location variables having an influence on the a tuning instruction, the tuning instruction having an effect on the reactance of each of the adjustable impedance devices. The specialist understands that this eighth embodiment uses certain aspects of the technique disclosed in said French patent application number 13/00878 and said international application number PCT / 1B2014 / 058933. The specialist understands that the antenna tuning obtained in this eighth embodiment may be more accurate than an antenna tuning in which the tuning instruction is only a function of the location variables. The specialist also understands that the antenna tuning obtained in this eighth embodiment can be simultaneously accurate and such that the tuning instruction is generated quickly and without requiring a large computing resource. Ninth embodiment. The ninth embodiment of an apparatus according to the invention, given by way of nonlimiting example, also corresponds to the portable device for radio communication shown in FIG. 5, and all the explanations provided for the first mode of communication. embodiment are applicable to this ninth embodiment. In this ninth embodiment, the tuning instruction is determined based on: location variables, each of the location variables having an influence on the tuning instruction; frequencies used for radio communication with antennas; one or more additional variables, each of the additional variables being an element of a set of additional variables, the elements of the set of additional variables including: communication type variables which indicate whether a radio communication session is a voice communication session, a data communication session or other type of communication session; a hands-free activation indicator; a loudspeaker activation indicator; variables obtained using one or more accelerometers; user identity variables that depend on the identity of the current user; reception quality variables which include, for example, the representative quantities of a channel matrix of the seventh embodiment; and antenna variables which include, for example, the actual quantities dependent on an impedance matrix presented by the radio accesses of the eighth embodiment. The elements of said set of additional variables may further include one or more variables which are different from the location variables and which characterize the manner in which a user holds the apparatus for radio communication. In this ninth embodiment, the tuning instruction may for example be determined using a look-up table in the processing unit. Based on the teaching of the said U.S. Patent No. 8,204,446, the specialist understands that the antenna tuning obtained in this ninth embodiment may be more accurate than an antenna tuning in which the chord statement is only a function of the location variables. The specialist also understands that the antenna tuning obtained in this ninth embodiment can be simultaneously accurate and such that the tuning instruction is generated quickly and without requiring a large computing resource. INDICATIONS ON INDUSTRIAL APPLICATIONS The invention is adapted to radio communication using multiple antennas Thus, the invention is adapted to MIMO radio communication. The apparatus for radio communication may be a MIMO radio communication apparatus, i.e. a MIMO radio reception apparatus 10 and / or a MIMO radio transmission apparatus. The invention provides the best possible characteristics by using very close antennas, thus having a strong interaction between the antennas. The invention is therefore particularly suitable for mobile devices for radio communication, for example mobile phones, digital tablets and laptops.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. A method for radio communication with multiple antennas in a given frequency band, using an apparatus for radio communication including n antennas, where n is an integer greater than or equal to 2, the method comprising the steps of: estimating a plurality of variables, each said variables being called "localization variable", each of the location variables depending on the distance between a part of a human body and a zone of the radio communication apparatus; Coupling said antennas, directly or indirectly, to an antenna tuning apparatus (3) having n antenna access, m radio access, where m is an integer greater than or equal to 2, and p devices with adjustable impedance, where p is an integer greater than or equal to 2m, each of the adjustable impedance devices having one frequency reactance in said given frequency band, the reactance of any of the adjustable impedance devices being electrically adjustable; generating a "tuning instruction", each of the location variables having an influence on the tuning instruction, the tuning instruction having an effect on the reactance of each of the adjustable impedance devices. 20
    [0002]
    The method for radio communication according to claim 1, wherein at least one of the location variables is an output of a pressure sensitive sensor exerted by a portion of a human body.
    [0003]
    The method for radio communication according to claim 1, wherein at least one of the location variables is an output of a proximity sensor. 25
    [0004]
    The method for radio communication according to claim 1, wherein at least one of the location variables is determined by a change of state of an output of a touch screen.
    [0005]
    5. Apparatus for radio communication using multiple antennas in a given frequency band, the apparatus for radio communication including n antennas, where n is an integer 30 greater than or equal to 2, the apparatus for radio communication comprising: a locator unit the location unit estimating a plurality of variables, each of said variables being called a "location variable", each of the location variables depending on the distance between a part of a human body and a zone of the communication apparatus radio; a processing unit (56), the processing unit outputting a "tuning instruction", each of the location variables having an influence on the tuning instruction; an antenna tuning apparatus (3) having n antenna access, m radio access and p adjustable impedance devices, where m is an integer greater than or equal to 2 and where p is an integer greater than or equal to 2m, each of adjustable impedance devices having a frequency reactance in said given frequency band, the reactance of any of the adjustable impedance devices being adjustable by electrical means; a tuning control unit (7), the tuning control unit receiving the tuning instruction, the tuning control unit delivering a plurality of tuning control signals to the tuning control unit; an antenna tuning apparatus, the tuning control signals being determined according to the tuning instruction, the reactance of each of the adjustable impedance devices being mainly determined by at least one of the tuning control signals. .
    [0006]
    An apparatus for radio communication according to claim 5, wherein the antenna tuning apparatus (3) is such that at said frequency in said given frequency band there is a diagonal impedance matrix called the diagonal impedance matrix. given, the given diagonal impedance matrix being such that, if an impedance matrix seen by the antenna access is equal to the given diagonal impedance matrix, then the reactance of any of the adjustable impedance devices has an influence on an impedance matrix presented by radio access.
    [0007]
    An apparatus for radio communication according to claim 6, wherein the antenna tuning apparatus (3) is such that, at said frequency in said given frequency band, if the impedance matrix seen by the antenna access is equal to the given diagonal impedance matrix, then the reactance of at least one of the adjustable impedance devices has an influence on at least one non-diagonal element of the impedance matrix presented by the radio accesses.
    [0008]
    An apparatus for radio communication according to claim 5, wherein the antenna tuning apparatus (3) is composed of n antenna tuning apparatus each having a single antenna access and a single radio access, the antenna tuning apparatus each having a single antenna access and a single radio access being independent and uncoupled.
    [0009]
    An apparatus for radio communication according to claim 5, wherein the radio communication apparatus comprises a radio receiver, the tuning instruction being a function of the location variables and one or more representative quantities of a radio matrix. channel.
    [0010]
    An apparatus for radio communication according to claim 5, wherein the apparatus for radio communication comprises a radio transmitter, the tuning instruction being a function of the location variables and q actual quantities dependent on an impedance matrix presented by radio access, where q is an integer greater than or equal to m.
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    FR3053185A1|2017-12-29|METHOD FOR THE AUTOMATIC ADJUSTMENT OF A TUNABLE ADAPTATION CIRCUIT, AND AUTOMATIC TUNING SYSTEM USING THE SAME.
    FR3063183A1|2018-08-24|METHOD FOR AUTOMATICALLY ADJUSTING PASSIVE TUNABLE ANTENNAS AND A UNIT OF ACCORD, AND APPARATUS FOR RADIO COMMUNICATION USING THE SAME.
    FR3053546A1|2018-01-05|METHOD OF AUTOMATICALLY ADJUSTING A TUNABLE ADAPTATION CIRCUIT, AND AUTOMATIC TUNING SYSTEM USING THE SAME
    FR3066859B1|2019-06-14|METHOD FOR AUTOMATICALLY ADJUSTING A TUNABLE PASSIVE ANTENNA AND A TUNING UNIT, AND APPARATUS FOR RADIO COMMUNICATION USING THE SAME
    US9929460B1|2018-03-27|Method for automatic adjustment of tunable passive antennas and a tuning unit, and apparatus for radio communication using this method
    FR3065326A1|2018-10-19|METHOD FOR AUTOMATICALLY ADJUSTING A PASSIVE TUNABLE ANTENNA AND A TUNING UNIT, AND APPARATUS FOR RADIO COMMUNICATION USING THE SAME
    同族专利:
    公开号 | 公开日
    KR102310481B1|2021-10-12|
    US9654162B2|2017-05-16|
    FR3018637B1|2018-08-17|
    US20160036474A1|2016-02-04|
    CN106104917A|2016-11-09|
    EP3117483A1|2017-01-18|
    WO2015136409A1|2015-09-17|
    KR20160132464A|2016-11-18|
    CN106104917B|2019-11-12|
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    法律状态:
    2015-03-03| PLFP| Fee payment|Year of fee payment: 2 |
    2016-02-19| PLFP| Fee payment|Year of fee payment: 3 |
    2016-04-01| TP| Transmission of property|Owner name: SAMSUNG ELECTRONICS CO., LTD., KR Effective date: 20160226 |
    2017-02-24| PLFP| Fee payment|Year of fee payment: 4 |
    2018-02-27| PLFP| Fee payment|Year of fee payment: 5 |
    2020-02-21| PLFP| Fee payment|Year of fee payment: 7 |
    2021-02-16| PLFP| Fee payment|Year of fee payment: 8 |
    2022-02-23| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1400606|2014-03-13|
    FR1400606A|FR3018637B1|2014-03-13|2014-03-13|RADIO COMMUNICATION USING MULTIPLE ANTENNAS AND LOCATION VARIABLES|FR1400606A| FR3018637B1|2014-03-13|2014-03-13|RADIO COMMUNICATION USING MULTIPLE ANTENNAS AND LOCATION VARIABLES|
    KR1020167028481A| KR102310481B1|2014-03-13|2015-03-03|Radio communication using multiple antennas and localization variables|
    EP15714938.6A| EP3117483A1|2014-03-13|2015-03-03|Radio communication using multiple antennas and localization variables|
    CN201580013880.9A| CN106104917B|2014-03-13|2015-03-03|Use the device and method of the radio communication of multiple antennas and locator variable|
    PCT/IB2015/051548| WO2015136409A1|2014-03-13|2015-03-03|Radio communication using multiple antennas and localization variables|
    US14/884,234| US9654162B2|2014-03-13|2015-10-15|Radio communication using multiple antennas and localization variables|
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