• 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 present invention relates to a broadband antenna structure. The broadband antenna (100) is placed on a printed circuit, and includes a substrate (10), a first ground sheet (20), a main radiator (130) and a parasitic element (140). The substrate has a first surface (12) and a second surface (14) opposite to the first surface. The first surface includes a first antenna area (121) and a first ground area (123) connected to the first antenna area. The first antenna area has a first side (1211) in a first direction, a second side (1213) in a second direction, a third side (1215) opposite the first side and a fourth side (1217) opposite the second side. . The first grounding plate is placed in the first grounding area (123), and near the first, second and third sides (1211, 1213, 1215).
    公开号:FR3054378A3
    申请号:FR1756419
    申请日:2017-07-07
    公开日:2018-01-26
    发明作者:Jing-Teng Chang
    申请人:Arcadyan Technology Corp；
    IPC主号:
    专利说明:

    The present application claims the benefit of the patent application No. 105210930, filed July 20, 2016 with the Taiwan Intellectual Property Office and whose disclosed elements are incorporated herein by their entirety for reference.
    The present invention relates to a broadband antenna structure and more particularly to a miniature broadband antenna placed on a printed circuit board. In the age of wireless communications, where Wi-Fi networks and wireless LANs in particular are extremely popular, consumer electronics need miniaturization and bandwidth to communicate, and the antennas for these products Electronic devices need to be smaller in size while offering broadband communication capabilities. Of the frequency bands commonly used for Wi-Fi communications, such as the two main 2.4 GHz and 5 GHz bands that comply with the IEEE802.il standard, the 2.4 GHz band experiences higher disturbances than other, because it is widely used for applications such as microwave ovens or Bluetooth communications, which interfere with Wi-Fi signals. The disturbances in the 5 GHz band, on the other hand, are much less important. .
    In order for the specification to be realized with a main frequency band at 5 GHz, the transmission frequency range of an antenna must be sufficiently wide. Traditional unipolar antennas can be designed according to the frequency or specific wavelength of the main frequency band, but they do not allow to benefit from a bandwidth of sufficient frequency. In addition, for reasons of appearance and ease of assembly, the antennas must be small so that they can be placed inside the elements of the electronic products, which implies antennas of a miniature model.
    To overcome the disadvantages of the prior art and achieve the design goal of a miniature broadband antenna, a new antenna structure is required.
    According to a first aspect of the present invention, a broadband antenna structure is described. The broadband antenna is placed on a printed circuit, and includes a substrate, a first grounding plate, a main radiator, and a parasitic element. The substrate has a first surface and a second surface opposite the first surface. The first surface includes a first antenna area and a first ground area connected to the first antenna area. The first antenna zone has a first side in a first direction, a second side in a second direction, a third side opposite the first side and a fourth side opposite the second side. The first grounding plate is placed on the first grounding area, and near the first, second and third sides. The main radiator is placed on the first antenna area, and includes a feed point near the second side; a first radiator extending from the feed point in the first direction to a point of inflection; and a second radiator extending from the point of inflection to the third side in the second direction. The parasitic element is placed in the second direction. A first space is formed between the parasitic element and the second radiator.
    According to another aspect of the present invention, a broadband antenna structure is described. The broadband antenna is placed on a printed circuit, and comprises a substrate, a grounding plate, a main radiator and a parasitic element. The grounding plate has a first inner side extending in a first direction, a second inner side connected to the first inner side and extending in a second direction and a third inner side connected to the second inner side and opposite the first internal side. The first, second and third inner sides form an opening near an outer side of the substrate. The main radiator includes a feed point near the second inner side; a first radiator extending from the feed point in the first direction to a point of inflection; and a second radiator extending from the point of inflection to the third inner side in the second direction. The parasitic element extends from the third inner side in the second direction to the first inner side. A first space is formed between the parasitic element and the second radiator.
    According to another aspect of the present invention, a broadband antenna structure is described. The broadband antenna is placed on a substrate having a first surface and a second surface opposite the first surface. The broadband antenna has a first grounding plate, a main radiator and a parasitic element. The first grounding plate is placed on the first surface, and has a first inner side in a first direction, a second inner side connected to the first inner side and extending in a second direction and a third inner side connected to the first second inner side and opposite the first inner side. The first, second and third inner sides form an opening near an outer side of the substrate. The main radiator includes a feed point near the second inner side; a first radiator extending from the feed point in the first direction to a point of inflection; and a second radiator extending from the point of inflection to the third inner side in the second direction. The parasitic element is oriented in the second direction. A first space is formed between the parasitic element and the second radiator.
    The broadband antenna model of the present invention fully satisfies the requirements of a miniature format and sufficient bandwidth, and it can very largely meet the requirements for a 5 GHz main frequency band according to the IEEE802 specification. it even has an even wider bandwidth. Thus, the present invention has utility for the industry.
    The objects and advantages of the present invention will become more apparent to those skilled in the art upon reading the following detailed descriptions and in light of the accompanying drawings, in which: FIG. 1A is a schematic representation showing a substrate to be used for placing thereon a broadband antenna having a parasitic element according to the present invention; Fig. 1B is a schematic representation showing a broadband antenna having a parasitic element according to a first embodiment of the present invention; Fig. 2 is a schematic representation showing a broadband antenna having a parasitic element according to another embodiment of the present invention; Figs. 3A and 3B are a set of schematic representations showing a broadband antenna having a parasitic element according to another embodiment of the present invention, Fig. 3A having a front view and Fig. 3B a rear view; Figs. 4A and 4B are a set of schematic representations showing a broadband antenna having a parasitic element according to yet another embodiment of the present invention, Fig. 4A having a front view and Fig. 4B a rear view; Fig. 5 is a schematic representation showing an equivalent circuit of the broadband antenna according to the present invention; and Figure 6 is a graph showing the return losses of the antenna fabricated according to the present invention.
    We will now describe the present invention more specifically with reference to the following embodiments. It should be noted that the descriptions of the preferred embodiments of this invention are presented solely for purposes of illustration and explanation; they do not claim to be exhaustive or to be limited to the precise form described.
    Consider Figure IA which shows a substrate 10 to be used to place thereon a broadband antenna with a parasitic element according to the present invention. According to the design model of the present invention, the substrate 10 may be in the form of a multilayer printed circuit, or simply a substrate made of dielectric materials. According to FIG. 1, the substrate 10 has a first surface 12 and a second surface 14 opposite the first surface 12. The first surface 12 and the second surface 14 respectively comprise a first external edge 11 and a second external edge 13. As shown in FIG. 1A, a first direction Y and a second direction X perpendicular to the first direction Y, the first direction Y and the second direction X define a plane parallel to the first and second surfaces 12, 14. From another point From view, it may be noted that the first surface 12 follows the first direction Y and the second direction X. The same applies to the second surface 14.
    The first surface 12 comprises a first antenna area 121 and a first grounding area 123 connected to the first antenna area 121. The first antenna area 121 has a first side 1211 in the first direction Y, a second side 1213 in a second direction X, a third side 1215 opposite to the first side 1211 and a fourth side 1217 opposite to the second side 1213. Similarly, the second surface 14 comprises a second antenna area 141 and a second area of grounded 143 connected to the second antenna zone 141. The second antenna zone 141 has a fifth side 1411 in the first direction Y, a sixth side 1413 in a second direction X, a seventh side 1415 opposed to the fifth side 1411 and an eighth side 1417 opposite the sixth side 1413.
    Let us examine FIG. 1B, which shows a broadband antenna 100 according to a first embodiment of the present invention. The broadband antenna 100 comprises the substrate 10 illustrated in FIG. 1A, a first grounding plate 20 placed on the first grounding area 123 and near the first side 1211, the second side 1213 and the third 1215 of the first antenna area 121, a main radiator 130 and a parasitic element 140. The main radiator 130 includes a feed point 131 near the second side 1213, a first radiator 133 extending from the supply 131 along the first Y direction to an inflection point 135; and a second radiator 137 extending from the inflection point 135 to the third side 1215 in the second direction X. The stray element 140 is connected to the first grounding plate 20 and extends from the third side 1215 (in the opposite direction) the second direction X.
    The main radiator 130 has a first overall length L1, the parasitic element 140 has a second total length L2, and the first overall length L1 is greater than the second total length L2. The parasitic element 140 and the second radiator 137 are both placed in the second direction X, and it is observed that a first gap G 1 is formed between the two. The first gap G 1 between parasitic element 140 and second radiator 137 can produce an electrical coupling effect. If the second radiator 137 carries a current, this current can be transmitted to the parasitic element 140 by electrical coupling. In FIG. 1B, it is observed that the parasitic element 140 and the second radiator 137 overlap partially when viewed in the first direction Y. However, according to another embodiment of the present invention, an electrical coupling may be established by the first space G1 although there is no overlap between the parasitic element 140 and the second radiator 137 when looking at the drawing in the first direction Y. The skilled person will know that according of the direction of flow of the electric current (not shown), the electrical coupling between the parasitic element 140 and the second radiator 137 causes a capacitive coupling.
    The first total length L1 of the main radiator 130 may affect the main resonance frequency of the antenna, which has a corresponding wavelength (hereinafter referred to as λ). In general, the first total length L1 may be designed to be equal to a quarter of the corresponding wavelength λ. For example, the first total length L1 may be about 54.5 millimeters, i.e. a quarter of the wavelength corresponding to the frequency of 5.5 GHz.
    Returning to FIG. 1B, where the first grounding plate 20 has a first width W1 and a first height H1, the first width W1 being greater than or equal to 0.29λ, and the first height H1 varying between 0 , 18λ and 0.5λ. The parasitic element 140 has a second length L2 and a second width W2, the second length L2 varies between 0.18λ and 0.25λ, and W2 is greater than 0.001λ. The first space G 1 varies between 0.007 λ and 0.163 λ.
    Let us examine simultaneously FIGS. 1A and 1B, on which the first grounding plate 20 comprises a first inner side 21 extending in the first direction Y, a second inner side 23 connected to the first inner side 21 and extending according to the second direction X and a third internal side 25 connected to the second inner side 23 and opposite the first inner side 21, and on which the first, second and third inner sides 21, 23, 25 together form a first opening 27 near the first outer side 11 of the substrate 10. The first, second and third inner sides 21, 23, 25 of the first grounding plate 20 are respectively placed near the first, second and third sides 1211, 1213, 1215 of the first Antenna area 121. Thus, the feed point 131 of the main radiator is close to the second inner side 23 of the first masking plate. 20. The first radiator 133 extends from the feed point 131 in the first direction Y to the inflection point 135. The second radiator 137 extends from the inflection point 135 to the next third internal side 25. the second direction X. The parasitic element 140 extends from the third inner side 25 in the second direction X to the first inner side 21. The length of the second inner side 23 varies between 0.18 λ and 0.26 Å. The distance between parasitic element 140 and second internal side 23 defines a second height H2, which is greater than 0.001 Å. A second space G 2 is formed between the first radiator 133 and the first internal side 21, and varies between 0.007 λ and 0.163 λ. In some embodiments of the present invention, the existence of the second gap G 2 contributes to the efficiency of the electrical coupling. The area on the second inner side 23 of the grounding plate 20 near the feed point 131 may be used to place a grounding point 129 therein.
    Consider Figure 5, which is a schematic drawing showing an equivalent circuit of the broadband antenna according to the present invention. Those skilled in the art will have understood that the zone 510 comprising the first inductor II and the first capacitor Ci corresponds to the electrical effect produced by the main radiator 130, the zone 520 comprising the second inductor 12 and the second capacitor C2 corresponds to the electrical effect produced by the parasitic element 140, and the capacitive coupling Cc between the first zone 510 and the second zone 520 results from the electrical coupling between the first radiator 130 and the parasitic element 140. Ri and Rr respectively designate the resistance to the antenna material consumption and the radiation resistance of the broadband antenna, respectively.
    Consider Figure 6, which shows the functionality of a broadband antenna manufactured in accordance with the present invention. According to the illustration of Figure 6, the antenna efficiency is sufficient in the frequency region between 4.3 GHz and 7.7 GHz, a significant antenna resonance effect can be observed at frequencies 5 GHz and 7 GHz. With regard to the antenna structure shown in FIG. 1B, those skilled in the art will know that the resonant frequency around 5 GHz is caused by the main radiator 130 while the other resonant frequency in the vicinity of 7 GHz is caused by parasitic element 140 due to the effect of electrical coupling. According to other embodiments of the present invention, the resonant frequency caused by the main radiator 130 will move towards a lower frequency provided that the second length L2 of the parasitic element 140 is adjusted so that it is more important, while the resonant frequency caused by the main radiator 130 remains close to 7 GHz. It is observed that the performance of the antenna in terms of return loss is even better, that is, the longer the parasitic element 140 is, the wider the bandwidth range of the broadband antenna 100 is.
    As shown in Fig. 6, the efficiency of the broadband antenna according to the present invention is fully in accordance with the specification of the communication bandwidth required in the IEEE802.11a standard. In addition, one skilled in the art can apply the same concept to design a broadband antenna with different main frequencies based on the present invention. From the wideband antenna model according to the present invention, the relative positions of the main radiator 130 and parasitic element 140 can be adjusted to achieve the same antenna efficiency as that of FIG. 6, as long as the first space G 1 is located between the main radiator 130 and the parasitic element 140. Consider Figure 2, which shows a broadband antenna 200 with a parasitic element according to another embodiment of the present invention. In FIG. 2, the wideband antenna 200 comprises the substrate 10 shown in FIG. 1A, the first grounding plate 20 shown in FIG. 1B, a main radiator 230, and a parasitic element 240. The shape, dimension and the position of the first grounding sheet 20 having been addressed in the foregoing descriptions, there is no need to return to it. Similarly, the main radiator 230 and the parasitic element 240 are placed on the first antenna zone 121 of the substrate 10.
    If we look at FIG. 2, a feed point 231 of the main radiator 230 is near the second inner side 23 of the first grounding plate 20, a first radiator 233 extends from the feed point 231. along the first Y direction to an inflection point 235, a second radiator 237 extends from the inflection point 235 to the third internal side 25 in the second direction X, and the stray element 240 is connected to the first grounding sheet 20 and extends from the third inner side 25 (in the opposite direction) the second direction X. Similarly, the area on the second inner side 23 of the setting plate ground 20 near the feed point 231 may be used to place a grounding point 229. Unlike the embodiment illustrated in FIG. 1B, the parasitic element 240 of FIG. located near the first outer side 11 of the substrate 11. In FIG. 2, the drawing shows the first space G 1 between the main radiator 230 and the parasitic element 240 as being formed above the main radiator 230. The dimensions of the main radiator 230, the parasitic element 240 and the first space G 1 of FIG. 2 are identical to those of the main radiator 130, the parasitic element 140 and the first space G 1 of FIG. 1B, respectively, and there is no need to return to it.
    According to the broadband antenna model of the present invention, the main radiator and the parasitic element can be respectively placed on different surfaces of the substrate. For example, one of them can be placed on the first surface 12 of the substrate 10 and the other on the second surface 14, as long as the relative positions of the two do not overlap and make it possible to preserve the first space G1 for electrical coupling to obtain the antenna efficiency shown in Figure 6.
    Let us examine FIGS. 3A and 3B, which together represent a broadband antenna 300 provided with a parasitic element according to another embodiment of the present invention. In FIGS. 3A and 3B, the broadband antenna 300 comprises the substrate 10 illustrated in FIG. 1A, a first grounding plate 20, a main radiator 330, a parasitic element 340, and a second grounding plate. mass 50. The first grounding plate 20 and the main radiator 330 are placed on the first surface 12 of the substrate 10, and the second grounding plate 50 and the parasitic element 340 on the second surface 14 of the Substrate 10. The shape, size and position of the first grounding plate 20 have been described in detail in the previous descriptions, and there is therefore no need to go back to it. The shape, size and position of the second grounding plate 50 are the exact image of the first grounding plate 20 projected on the second surface 14, and there is therefore no need for come back. It will be observed that the main radiator 330 is in the first antenna zone 121 while the parasitic element 340 is in the second antenna zone 141.
    The shape and size of the second grounding plate 50 of the second surface 14 corresponds to those of the first grounding plate 20. Specifically, the second grounding sheet 50 includes the fourth side. internal 51 in the first direction Y, the fifth inner side 53 connected to the fourth inner side 51 and the second direction X and the sixth inner side 55 connected to the fifth inner side 53 and opposite the fourth inner side 51. The fourth inner side 51 , the fifth internal side 53 and the sixth internal side 55 together form a second opening 57 near the second outer side 13 of the substrate 10. The first, second and third inner sides 51, 53, 55 of the second setting plate mass 50 are respectively placed near the fifth, sixth and seventh sides 1411, 1413, 1415 of the second antenna zone 141.
    Similarly, the supply point 331 of the main radiator 330 is located near the second inner side 23 of the first grounding plate 20, the first radiator 333 extends from the supply point 331 in the first direction Y to the point of inflection 335, the second radiator 337 extends from the inflection point 335 to the third internal side 25 in the second direction X, and the parasitic element 340 extends from the sixth internal side 55 corresponding to the third internal side 25 in the second direction X to the fourth internal side 51. The dimensions of the main radiator 330, the parasitic element 340 and the first space G 1 of Figures 3A and 3B are respectively identical to those the main radiator 130, parasitic element 140 and the first space G 1, and there is no need to return to it.
    Let us examine FIGS. 4A and 4B, which together represent a broadband antenna 400 provided with a parasitic element according to another embodiment corresponding to that illustrated in FIG. 2. The broadband antenna 300 comprises the substrate 10 illustrated in FIG. IA, a first grounding plate 20, a main radiator 430, a parasitic element 440 and a second grounding plate 50. The first grounding plate 20 and the main radiator 430 are placed on the ground. first surface 12 of the substrate 10, with the second grounding plate 50 and the parasitic element 440 on the second surface 14 of the substrate 10. The shape, the dimension and the position of the first grounding plate 20 and second sheet metal 50 have been described in detail in the previous descriptions, and there is therefore no need to return to it. It is observed that the main radiator 430 is in the first antenna zone 121 with the parasitic element 440 in the second antenna zone 141. The dimensions of the main radiator 430, the parasitic element 440 and the first space G 1 of Figures 4A and 4B are respectively identical to those of the main radiator 230, parasitic element 240 and the first space G 1 of Figure 2, and there is no need to return thereto. From the foregoing, and although these embodiments of Figures 1B, 2, 3A / 3B and 4A / 4B provide solutions that can be used for the different ways of placing the elements, all these antenna structures have the same efficiency. This is because the broadband antennas of the present invention have spurious elements which can produce a second higher resonance frequency by electrical coupling, and therefore allow the frequency bandwidth to be increased to improve efficiency of the antenna.
    权利要求:
    Claims (20)
    [1" id="c-fr-0001]
    A wideband antenna (100, 200, 300, 400) placed on a printed circuit, characterized in that it comprises: a substrate (10) having a first surface (12) and a second surface (14) opposite to the first surface (12), wherein the first surface (12) comprises a first antenna area (121) and a first ground area (123) connected to the first antenna area (121), the first antenna area (121) has a first side (1211) in a first direction, a second side (1213) in a second direction, a third side (1215) opposite the first side (1211) and a fourth side (1217). opposite the second side (1213); a first grounding plate (20) located on the first grounding area (123), and near the first (1211), second (1213) and third (1215) sides; a main radiator (130, 230, 330, 430) located on the first antenna area (121), and comprising: a feed point (131, 231, 331, 431) proximate the second side (1213); a first radiator (133, 233, 333, 433) extending from the feed point (131, 231, 331, 431) in the first direction to a point of inflection (135, 235, 335, 435) ; and a second radiator (137, 237, 337, 437) extending from the point of inflection (135, 235, 335, 435) to the third side (1215) in the second direction; and a parasitic element (140, 240, 340, 440) positioned in the second direction, wherein a first gap (G1) is formed between the parasitic element (140, 240, 340, 440) and the second radiator (137) .
    [2" id="c-fr-0002]
    2. Broadband antenna according to claim 1, characterized in that the second direction is perpendicular to the first direction.
    [3" id="c-fr-0003]
    A wideband antenna according to claim 1, wherein the parasitic element (140,240) is placed on the first surface.
    [4" id="c-fr-0004]
    4. Broadband antenna according to claim 3, characterized in that the parasitic element (140, 240) is placed in the first antenna zone.
    [5" id="c-fr-0005]
    5. Broadband antenna according to claim 1, characterized in that the parasitic element (340, 440) is placed on the second surface.
    [6" id="c-fr-0006]
    A wideband antenna according to claim 5, characterized in that the second surface (14) further comprises a second antenna area (141) and a second grounding area (143) corresponding to the first antenna ( 121) and the first grounding area (123) respectively, the broadband antenna (300, 400) further comprises a second grounding plate (50) located on the second grounding area (143), and the parasitic element (340, 440) is placed on the second antenna zone (141) and connected to the second grounding plate (50).
    [7" id="c-fr-0007]
    7. Broadband antenna according to claim 1, characterized in that a second space (G2) is formed between the first radiator (133, 233, 333, 433) and the first side (1211).
    [8" id="c-fr-0008]
    8. wideband antenna according to claim 1, characterized in that the main radiator (130, 230, 330, 430) has a first total length, the parasitic element has a second total length, and the first total length is greater than the second total length.
    [9" id="c-fr-0009]
    9. Broadband antenna (100, 200, 300, 400) placed on a substrate (10), characterized in that it comprises: a grounding plate (20) having a first internal side (21) s' extending in a first direction, a second inner side (23) connected to the first inner side (21) and extending in a second direction and a third inner side (25) connected to the second inner side (23) and opposite the first side internal (21), wherein the first (21), second (23) and third (25) inner sides form an opening 27 near an outer side (11) of the substrate (10); a main radiator (130, 230, 330, 430) comprising: a feed point (131, 231, 331, 431) proximate the second inner side (23); a first radiator (133, 233, 333, 433) extending from the feed point (131, 231, 331, 431) in the first direction to a point of inflection (135, 235, 335, 435) ; and a second radiator (137, 237, 337, 437) extending from the point of inflection (135, 235, 335, 435) to the third inner side (25) in the second direction; and a parasitic element (140, 240, 340, 440) extending from the third inner side (25) in the second direction to the first inner side (21), wherein a first space (G1) is formed between the element parasite (140, 240, 340, 440) and the second radiator (137, 237, 337, 437).
    [10" id="c-fr-0010]
    10. Broadband antenna according to claim 9, characterized in that the second direction is perpendicular to the first direction.
    [11" id="c-fr-0011]
    11. Broadband antenna according to claim 9, characterized in that a second space (G2) is formed between the first radiator (133, 233, 333, 433) and the first side (21).
    [12" id="c-fr-0012]
    Wideband antenna according to claim 9, characterized in that the main radiator (130, 230, 330, 430) has a first overall length, the parasitic element (140, 240, 340, 440) has a second total length. , and the first total length is greater than the second total length.
    [13" id="c-fr-0013]
    A wideband antenna (100, 200, 300, 400) placed on a substrate (10) having a first surface (12) and a second surface (14) opposite the first surface (12), characterized in that comprises: a first grounding plate (20) disposed on the first surface (12), and having a first inner side (21) in a first direction, a second inner side (23) connected to the first inner side (21); ) and extending in a second direction and a third inner side (25) connected to the second inner side (23) and opposite the first inner side (21), wherein the first (21), second (23) and third ( 25) inner sides form an opening (27) near an outer side (11) of the substrate (20); a main radiator (130, 230, 330, 430) comprising: a feed point (131, 231, 331, 431) proximate the second inner side (23); a first radiator (133, 233, 333, 433) extending from the feed point (131, 231, 331, 431) in the first direction to a point of inflection (135, 235, 335, 435) ; and a second radiator (137, 237, 337, 437) extending from the point of inflection (135, 235, 335, 435) to the third inner side (25) in the second direction; and a parasitic element (140, 240, 340, 440) placed in the second direction, wherein a first gap (G 1) is formed between the parasitic element (140, 240, 340, 440) and the second radiator (137 , 237, 337, 437).
    [14" id="c-fr-0014]
    14. Broadband antenna according to claim 13, characterized in that the second direction is perpendicular to the first direction.
    [15" id="c-fr-0015]
    15. Broadband antenna according to claim 13, characterized in that the parasitic element (140, 240) is placed on the first surface.
    [16" id="c-fr-0016]
    Wideband antenna according to claim 15, characterized in that the parasitic element (140, 240) extends to the third inner side (25) and is connected to the first grounding plate (20). .
    [17" id="c-fr-0017]
    17. Broadband antenna according to claim 13, characterized in that the parasitic element (340, 440) is placed on the second surface (14).
    [18" id="c-fr-0018]
    18. Wideband antenna according to claim 17, characterized in that the broadband antenna (300, 400) further comprises a second grounding plate (50) placed on the second surface (14), the second sheet metal (50) has a shape and position corresponding to those of the first grounding plate (20), and the parasitic element (340, 440) is connected to the second grounding plate (20). mass (50).
    [19" id="c-fr-0019]
    19. Broadband antenna according to claim 13, characterized in that a second space (G2) is formed between the first radiator (133, 233, 333, 433) and the first inner side (21).
    [20" id="c-fr-0020]
    20. A wideband antenna according to claim 13, characterized in that the main radiator (130, 230, 330, 430) has a first overall length, the parasitic element (140, 240, 340, 440) has a second total length. , and the first total length is greater than the second total length.
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    同族专利:
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    TWI527307B|2013-05-29|2016-03-21|智易科技股份有限公司|Antanna structure|CN109546298A|2017-09-22|2019-03-29|宏碁股份有限公司|Mobile device|
    CN109950705A|2018-12-28|2019-06-28|瑞声科技有限公司|Mimo antenna and terminal|
    DE102019205556A1|2019-04-17|2020-10-22|BSH Hausgeräte GmbH|PCB antenna|
    TWI708428B|2019-06-28|2020-10-21|廣達電腦股份有限公司|Antenna structure|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    TW105210930U|TWM539158U|2016-07-20|2016-07-20|Miniature wideband antenna|
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