JP2006094384A - Antenna assembly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna assembly capable of reducing the entire assembly in size and reducing the loss of reception signals. <P>SOLUTION: In the antenna assembly 10, a substrate 64 is fixed to the center of the front surface 12a of a ground conductor plate 12 through an attaching member 76, a low noise amplifier circuit unit 60 is arranged on the substrate 64, and the low noise amplifier circuit unit 60 is covered with a shield cover 62 electrically connected to the ground conductor plate 12. Since the low noise amplifier circuit unit 60 is arranged on the front surface 12a of the ground conductor plate 12, a distance between the low noise amplifier circuit unit 60 and power supply patches 16a-16d, that is the entire length of conductors 66a-66d for power supply, is shortened and power supply losses of the conductors 66a-66d for power supply to the reception signals are reduced, the entire assembly is reduced in size and the attenuation of the reception signal inputted to the low noise amplifier circuit unit 60 is suppressed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an antenna device that includes an antenna and a ground conductor plate and is suitable for use in satellite communication or the like.

  Conventionally, in an antenna device for satellite communication mounted on a ship or the like, an antenna is disposed on one surface of a ground conductor plate, and this antenna is electrically connected to a transmission circuit and a reception circuit via a feeding circuit and an antenna duplexer. They are connected (see Patent Document 1).

  Here, when the transmission circuit supplies a transmission signal to the antenna via the antenna duplexer and the power feeding circuit, the antenna converts the transmission signal into a radio wave, and transmits the converted radio wave to an artificial satellite or the like. To do. On the other hand, when the antenna receives a radio wave from the outside, the antenna converts the received radio wave into a reception signal, and outputs the reception signal to the reception circuit via the power feeding circuit and the antenna duplexer. The receiving circuit amplifies the received signal and outputs the amplified received signal to the communication device in the ship.

Japanese Examined Patent Publication No. 6-66573

  In the antenna device according to the related art described above, when the antenna device is to be downsized, the level of the received signal output from the antenna to the receiving circuit is reduced due to the size and weight of the antenna duplexer and the insertion loss. There is a problem. Further, if the space of the power feeding circuit is reduced, there is a problem that the power feeding loss is increased and the level of the received signal is reduced.

  In order to compensate for such loss, the receiving circuit is arranged on the other surface of the ground conductor plate, and the distance between the receiving circuit and the antenna is shortened as much as possible to reduce the above-described loss. In this case, the other surface of the ground conductor plate is provided with a motor for directing the ground conductor plate in the elevation angle direction and the polarization angle direction, and a support mechanism for fixing and supporting them, and only the receiving circuit is disposed. It is difficult to secure the space.

  In addition, regarding the substrate on which the receiving circuit is arranged, when trying to reduce the loss with respect to the received signal by using a low dielectric constant substrate, such a substrate is generally expensive, so that the cost of the antenna device is increased. There is a risk of causing.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an antenna device capable of reducing the size of the entire device and reducing the loss of received signals.

  An antenna device according to the present invention amplifies a ground conductor plate, an antenna that transmits and receives radio waves, a feed circuit that is electrically connected to the antenna, and a reception signal that is output from the antenna via the feed circuit A shield cover in which the antenna, the feeding circuit, and the receiving circuit are disposed on one surface of the ground conductor plate, and the receiving circuit is electrically connected to the ground conductor plate. It is covered with.

  In this case, since the receiving circuit is arranged on one surface of the ground conductor plate, the distance between the receiving circuit and the antenna, that is, the total length of the feeding circuit is shortened, and the feeding loss of the feeding circuit with respect to the received signal is reduced. It is possible to suppress attenuation of the received signal input to the receiving circuit. As a result, even if the antenna device is downsized, it is possible to reduce the loss with respect to the received signal.

  Moreover, since the receiving circuit is disposed on one surface of the ground conductor plate, it is easy to reduce the size of the support structure for the ground conductor plate disposed on the other surface of the ground conductor plate.

  Furthermore, since the receiving circuit is covered with the shield cover, the receiving circuit is shielded from radio waves transmitted from the antenna to the outside and radio waves received from the outside to the antenna. It is possible to reduce unnecessary waves that enter. Further, this shield can improve the antenna pattern of the radio wave transmitted from the antenna.

  Here, it is preferable that the receiving circuit is disposed on a substrate made of an electrically insulating material having a high dielectric constant, and a part of the feeding circuit is formed on the substrate.

  As a result, a part of the power feeding circuit can be downsized, and the entire apparatus can be easily downsized. Further, since the substrate is made of the high dielectric constant electrically insulating material, the cost can be reduced as compared with the low-loss substrate, and the manufacturing cost of the entire apparatus can be reduced.

  Further, the shield cover and the receiving circuit are arranged at a center portion of the ground conductor plate, and a plurality of the antennas are arranged on one surface of the ground conductor plate so as to surround the shield cover and the receiving circuit. It is preferable.

  Thereby, the weight balance on a ground conductor board is ensured and the burden with respect to the support structure which fixes and supports this ground conductor board is reduced. Furthermore, by arranging a plurality of the antennas, the gain as the antenna device can be increased.

  Furthermore, the antenna is a patch antenna laminated on a first positioning member disposed on one surface of the ground conductor plate, and the patch antenna is laminated on the first positioning member and electrically connected to the feeding circuit. Preferably, the power supply patch is configured by a power supply patch connected to the power supply patch, a second positioning member stacked on the power supply patch, and a non-power supply patch stacked on the second positioning member.

  When the patch antenna has a laminated structure, the assembly time of the antenna device in the manufacturing process can be shortened, and the manufacturing cost of the antenna device can be reduced.

  According to the present invention, since the receiving circuit is arranged on one surface of the ground conductor plate, the distance between the receiving circuit and the antenna, that is, the total length of the feeding circuit is shortened, and the feeding loss of the feeding circuit with respect to the received signal is reduced. It is possible to suppress attenuation of the received signal input to the receiving circuit. As a result, even if the antenna device is downsized, it is possible to reduce the loss with respect to the received signal.

  Moreover, since the receiving circuit is disposed on one surface of the ground conductor plate, it is easy to reduce the size of the support structure for the ground conductor plate disposed on the other surface of the ground conductor plate.

  Furthermore, since the receiving circuit is covered with a shield cover, the receiving circuit is shielded from radio waves transmitted from the antenna to the outside and radio waves received from the outside to the antenna, and therefore enters the receiving circuit. It is possible to reduce unnecessary waves. Further, this shield can improve the antenna pattern of the radio wave transmitted from the antenna.

  Preferred embodiments of an antenna device according to the present invention will be described below and described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing an antenna device 10 according to an embodiment of the present invention (hereinafter referred to as the antenna device 10 according to the present embodiment), and FIG. 2 is an exploded perspective view of the antenna device 10. FIG. 3 is a bottom view of the ground conductor plate 12 and the substrate 64. 4 is a sectional view taken along line IV-IV in FIG. 1, and FIG. 5 is a sectional view taken along line VV in FIG. FIG. 6 is a circuit block diagram of the antenna device 10.

  As shown in FIGS. 1, 2, 4, and 5, the antenna device 10 according to the present embodiment includes a plurality of patch antennas 35 a to 35 b on one surface (hereinafter also referred to as a front surface) 12 a of the ground conductor plate 12. This is a circularly polarized array antenna, which is basically stacked on the ground conductor plate 12, the first positioning member 14 disposed on the front surface 12 a of the ground conductor plate 12, and the first positioning member 14. Power supply patches 16a to 16d, second positioning members 18a to 18d stacked on the power supply patches 16a to 16d, non-powered patches 20a to 20d stacked on the second positioning members 18a to 18d, and the ground conductor The first positioning member 14, the power feeding patches 16 a to 16 d, and the second positioning member 1 formed on the front surface 12 a of the plate 12 and fastened with screws 24 a to 24 d are stacked. a~18d and the composed of the third positioning member 22a~22d the parasitic patch 20a~20d are integrated.

  Note that the above-described front surface 12a of the ground conductor plate 12 is the patch antennas 35a to 35d including the power supply patches 16a to 16d, the second positioning members 18a to 18d, and the non-powered patches 20a to 20d. The patch antennas 35a to 35d are the radiation surfaces of the antennas that are stacked on each other and that transmit and receive radio waves.

  As shown in FIGS. 1 to 4, the ground conductor plate 12 has a substantially disk-shaped ground made of a conductive material such as aluminum, with a part of the outer periphery bent to the other surface (hereinafter also referred to as the back surface) 12 b side. It is a board. The back surface 12b of the ground conductor plate 12 refers to the surface where the patch antennas 35a to 35d are not disposed.

  As shown in FIGS. 1, 2 and 5, the first positioning member 14 is made of an electrically insulating material such as a foam material having a low dielectric constant close to that of air, and is disposed on the front surface 12 a of the ground conductor plate 12. The first portion 14a having a substantially octagonal shape and the second portion 14b having a substantially cross shape as a protruding portion disposed in the first portion 14a. In addition, recesses 28a to 28b are formed at the center of each outer surface of the second portion 14b.

  The height of the first positioning member 14 (the height of the second portion 14b) is the same as or higher than the height of each of the patch antennas 35a to 35d (the height of the parasitic patches 20a to 20d). (See FIGS. 1, 4 and 5).

  As shown in FIGS. 1 and 2, the power supply patches 16a to 16d are substantially hexagonal antenna elements made of a conductive material such as brass and manufactured by sheet metal processing or the like, and are partitioned by the second portion 14a. It arrange | positions on each plane of the 1st part 14a. In this case, one side of the power supply patches 16a to 16d is in contact with the outer surface of the second portion 14b.

  The second positioning members 18a to 18d are substantially rectangular insulating plates made of an electrically insulating material such as a foam material having a low dielectric constant close to the dielectric constant of air, and one side portion of the second positioning members 18a to 18d is the second portion 14b. It is in contact with the outer surface. Projections 30a to 30d are formed on the one side, and the protrusions 30a to 30d are fitted with the recesses 28a to 28d.

  The parasitic patches 20a to 20d are substantially rectangular antenna elements made of a conductive material such as brass and manufactured by sheet metal processing or the like, and have substantially the same width as the second positioning members 18a to 18d. In this case, one side portion of the non-feed patches 20a to 20d is in contact with the outer surface of the second portion 14b.

  The third positioning members 22a to 22d are nuts made of stainless steel or the like, and are offset by 90 ° in the circumferential direction between the center of the ground conductor plate 12 and the outer peripheral surface (see FIG. 2).

  Here, holes 32a to 32d are formed in the first portion 14a (near the corner of the first portion 14a), holes 34a to 34d are formed in the central portions of the power feeding patches 16a to 16d, and the second positioning members 18a to 18d. Holes 36a to 36d are formed at the center of 18d, and holes 38a to 38d are formed at the center of the non-feed patches 20a to 20d. When the third positioning members 22a to 22d are fitted into the holes 32a to 32d, 34a to 34d, 36a to 36d, and 38a to 38d, the first positioning member 14 for the ground conductor plate 12 and the power feeding units are provided. The patches 16a to 16d, the second positioning members 18a to 18d, and the non-feed patches 20a to 20d are positioned (see FIGS. 2 and 5).

  Here, by screwing the screws 24a to 24d into the third positioning members 22a to 22d, the first positioning member 14, the power feeding patches 16a to 16d, the second positioning members 18a to 18d, and the non-moving members. The power feeding patches 20 a to 20 d are integrated and fixed to the ground conductor plate 12. In this case, each of the power supply patches 16a to 16d is arranged in a state where a part thereof protrudes from the second positioning members 18a to 18d and the non-power supply patches 20a to 20d (see FIG. 1).

  As described above, the central portions of the first positioning member 14, the power supply patches 16a to 16d, the second positioning members 18a to 18d, and the non-power supply patches 20a to 20d shown in FIGS. The positioning members 22a to 22d are fitted, and the first positioning member 14, the power supply patches 16a to 16d, and the second positioning members 18a to 18d are fastened by fastening the third positioning members 22a to 22d and the screws 24a to 24d. The parasitic patches 20a to 20d are mechanically connected to the ground conductor plate 12. However, since each of the central portions is a portion where the electric field becomes 0 when radio waves are transmitted and received, the arrangement of the third positioning members 22a to 22d does not affect the transmission and reception of the radio waves.

  In the antenna device 10 according to the present embodiment, as shown in FIGS. 2 and 5, a substantially rectangular hole 70 is formed at the center of the second portion 14b, and the hole is formed at the center of the first portion 14a. A substantially rectangular hole 72 is formed corresponding to 70, and a substantially rectangular hole 74 is formed in the center of the ground conductor plate 12 corresponding to the hole 72. Further, a shield cover 62 that is electrically connected to the ground conductor plate 12 passes through each of the holes 70 and 72. In this case, the low-noise amplifier circuit unit 60 shown in FIGS. 2 and 4 to 6 is disposed inside the shield cover 62, and the low-noise amplifier circuit unit 60 includes power supply conductors 66a to 66a as power supply circuits. The power supply patches 16a to 16d are electrically connected through 66d.

  A substantially L-shaped attachment member 76 is formed so as to protrude from a corner portion of the inner surface of the ground conductor plate 12 forming the hole 74 (see FIGS. 2 to 5). A substantially rectangular substrate 64 made of an electrically insulating material having a high dielectric constant is attached to these attachment members 76. In this case, the corners of the substrate 64 protrude along the front surface 12 a of the ground conductor plate 12, and the substrate 64 is attached to the mounting member 76 through these protruding portions.

  Here, as shown in FIGS. 2 and 4 to 6, the low-noise amplifier circuit unit 60 basically transmits a transmission signal from a transmission circuit (not shown) via the power supply conductors 66 a to 66 d. To 16d, while amplifying the reception signals output from the power supply patches 16a to 16d via the power supply conductors 66a to 66d, and outputting the amplified reception signals to, for example, a communication device (not shown) This is an electronic circuit unit that also serves as a receiving circuit. As shown in FIG. 6, matching circuits 88a to 88d electrically connected to the power feeding conductors 66a to 66d, a combining circuit 90a electrically connected to the matching circuits 88a and 88b, A synthesis circuit 90b electrically connected to the matching circuits 88c and 88d, an antenna duplexer 68a and 68b electrically connected to the synthesis circuits 90a and 90b, and an electrical connection to the antenna duplexers 68a and 68b Low-noise amplifiers 92a and 92b, and a distribution circuit 94 electrically connected to the antenna duplexers 68a and 68b.

  The matching circuits 88a to 88d are electronic circuits for performing impedance matching between the low noise amplifier circuit unit 60 and the power supply conductors 66a to 66d.

  The combining circuit 90a combines the reception signal input from the power supply patch 16a through the power supply conductor 66a and the reception signal input from the power supply patch 16b through the power supply conductor 66b, while the antenna duplexer 68a. Is distributed to two input signals, and the distributed transmission signals are output to the power supply patches 16a and 16b via the matching circuits 88a and 88b and the power supply conductors 66a and 66b.

  The combining circuit 90b combines the reception signal input from the power supply patch 16c through the power supply conductor 66c and the reception signal input from the power supply patch 16d through the power supply conductor 66d, while the antenna duplexer 68b. Is divided into two transmission signals, and the distributed transmission signals are output to the feeding patches 16c and 16d via the matching circuits 88c and 88d and the feeding conductors 66c and 66d.

  The antenna duplexers 68a and 68b remove unnecessary waves included in the received signals input via the synthesis circuits 90a and 90b, and output the received signals from which the unnecessary waves are removed to the low noise amplifiers 92a and 92b. On the other hand, it is a filter for removing unnecessary waves included in the transmission signal from the distribution circuit 94 and outputting the transmission signals from which the unnecessary waves have been removed to the synthesis circuits 90a and 90b.

  The low noise amplifiers 92a and 92b amplify the received signal input via the antenna duplexers 68a and 68b, and output the amplified received signal to a communication device (not shown) via the output terminals 84 and 86. .

  The distribution circuit 94 distributes the transmission signal input from the transmission circuit (not shown) through the input terminal 82 and outputs the transmission signal to the antenna duplexers 68a and 68b.

  The above-described electronic circuits and electronic components constituting the low-noise amplifier circuit unit 60 are arranged on the front surface 12a side surface of the substrate 64 shown in FIGS. 2, 4 and 5, and the input terminal 82 and the output terminals 84 and 86 are It is formed on the surface of the substrate 64 on the back surface 12b side. 2, 4, and 5 show the case where the antenna duplexers 68 a and 68 b are arranged on the surface of the substrate 64 on the front surface 12 a side, and other electronic circuits and electronic components are not shown. is doing.

  The shield cover 62 is a substantially rectangular shield member made of a conductive material such as aluminum, and shields between the patch antennas 35 a to 35 d and the low noise amplification circuit unit 60. The corners of the shield cover 62 are formed with holes through which the protruding portions of the substrate 64 protrude. From each of the protruding portions, substantially L-shaped power supply conductors 66a to 66d made of a conductive material such as brass extend.

  The feeding conductors 66a to 66d protrude from the protruding portions of the substrate 64 toward the back surface 12b of the antenna device 10, and extend in a substantially L shape along the front surface 12a of the ground conductor plate 12 from the tip of the protruding portion. And electrically connected to the power supply patches 16a to 16d. In this case, a part of the power supply conductors 66a to 66d is also formed on each of the protruding portions of the substrate 64. However, the width of the power supply conductors 66a to 66d in each of the protruding portions is the same as that of the substrate 64. And a width in a portion between the power supply patches 16a to 16d (see FIG. 2). The feeding conductors 66a to 66d and the ground conductor plate 12 are not in contact with each other.

  In the corners of the inner surface of the first portion 14a forming the hole 72, substantially L-shaped grooves 80a to 80d for accommodating the power feeding conductors 66a to 66d are formed.

  In addition, concave portions 78 a to 78 d for accommodating the protruding portions of the substrate 64 are formed at the corners of the inner surface of the second portion 14 b forming the hole 70. Further, the portions where the power supply patches 16a to 16d and the power supply conductors 66a to 66d are electrically connected to each other on the outer surface of the second portion 14b are notches where the connection portions and the second portion 14b do not contact each other. It is said that.

  Here, in a state where the low noise amplifier circuit unit 60 and the power supply patches 16a to 16d are electrically connected by power supply conductors 66a to 66d, the low noise amplifier circuit unit 60, the power supply patches 16a to 16d, and When the power supply conductors 66a to 66d are arranged on the first portion 14a and the front surface 12a of the ground conductor plate 12, the substrate 64 is attached to the attachment member 76, and the power supply patches 16a to 16d are arranged on the first portion 14a. The power feeding conductors 66a to 66d are accommodated in the grooves 80a to 80d. When the shield cover 62 is passed through the holes 70 and 72 and disposed on the ground conductor plate 12, the shield cover 62 and the ground conductor plate 12 are electrically connected, and the low noise amplification circuit unit 60 is connected to the patch antenna. Shielded from 35a to 35d.

  Next, transmission / reception of radio waves in the antenna device 10 according to the present embodiment will be described with reference to FIGS.

  When a transmission signal (for example, a 1.5 GHz high frequency signal) is input from a transmission circuit (not shown) to the distribution circuit 94 via the input terminal 82, the distribution circuit 94 distributes the transmission signal to each antenna duplexer. Output to 68a, 68b. Each of the antenna duplexers 68a and 68b removes the unnecessary wave included in the input transmission signal and outputs the transmission signal from which the unnecessary wave is removed to the synthesis circuits 90a and 90b.

  The combining circuit 90a distributes the input transmission signal and outputs the distributed transmission signal to the power supply patch 16a via the matching circuit 88a and the power supply conductor 66a, while the matching circuit 88b and the power supply conductor 66b. To the power supply patch 16b. The combining circuit 90b distributes the input transmission signal and outputs the distributed transmission signal to the power supply patch 16c via the matching circuit 88c and the power supply conductor 66c, while the matching circuit 88d and the power supply The power is output to the power supply patch 16d via the conductor 66d.

  The power supply patches 16a to 16d convert the input transmission signal into radio waves, and the radio waves are not illustrated from the portions of the power supply patches 16a to 16d that are not covered with the second positioning members 18a to 18d. Send to etc.

  On the other hand, when the power supply patches 16a to 16d receive radio waves from the outside where they are not covered, the power supply patches 16a to 16d convert the radio waves into reception signals (for example, 1.6 GHz high frequency signals) This received signal is output to the synthesis circuits 90a and 90b via the power supply conductors 66a to 66d and the matching circuits 88a to 88d.

  The combining circuit 90a combines the reception signal input from the power supply patch 16a via the power supply conductor 66a and the matching circuit 88a and the reception signal input from the power supply patch 16b via the power supply conductor 66b and the matching circuit 88b. Then, the combined received signal is output to the antenna duplexer 68a. On the other hand, the synthesis circuit 90b receives a reception signal input from the power supply patch 16c via the power supply conductor 66c and the matching circuit 88c, and a reception signal input from the power supply patch 16d via the power supply conductor 66d and the matching circuit 88d. And the combined received signal is output to the antenna duplexer 68b. The antenna duplexers 68a and 68b remove unnecessary waves included in the input received signals and output the received signals from which the unnecessary waves are removed to the low noise amplifiers 92a and 92b.

  The low noise amplifiers 92a and 92b amplify the received reception signal, and output the amplified reception signal to a communication device (not shown) via the output terminals 84 and 86.

  Thus, in the antenna device 10 according to the present embodiment, the low noise amplifier circuit unit 60 including the low noise amplifiers 92a and 92b is disposed on the front surface 12a side of the ground conductor plate 12, and thus the low noise amplifier circuit unit 60 and The distance between the patch antennas 35a to 35d and the power supply patches 16a to 16d, that is, the total length of the power supply conductors 66a to 66d can be shortened, and the power supply loss of the power supply conductors 66a to 66d with respect to the received signal can be reduced. It is possible to suppress the attenuation of the received signal input to the low noise amplifier circuit unit 60. As a result, the antenna device 10 can be downsized, and loss with respect to the received signal can be reduced.

  Further, since the low noise amplification circuit unit 60 is disposed on the front surface 12a side of the ground conductor plate 12, the support structure of the ground conductor plate 12 disposed on the back surface 12b side of the ground conductor plate 12 is provided. Miniaturization becomes easy.

  Further, since the low-noise amplifier circuit unit 60 is covered with the shield cover 62, the low-noise amplifier circuit unit 60 includes radio waves transmitted to the outside from the patch antennas 35a to 35d and the patch antenna from the outside. It is possible to reduce unnecessary waves that are shielded from the radio waves received by 35a to 35d and enter the low noise amplifier circuit unit 60. Moreover, the antenna pattern of the radio wave transmitted from the patch antennas 35a to 35d can be improved by this shield.

  Furthermore, the low noise amplifier circuit unit 60 is disposed on the substrate 64 made of an electrically insulating material having a high dielectric constant, and a part of the power feeding conductors 66a to 66d is formed on the substrate 64. A part of the power supply conductors 66a to 66d can be downsized, and the entire apparatus can be easily downsized. Further, since the substrate 64 is made of the high dielectric constant electrically insulating material, the cost can be reduced as compared with the low-loss substrate, and the manufacturing cost of the entire apparatus can be reduced.

  Further, the shield cover 62 and the low noise amplification circuit unit 60 are disposed at the center of the ground conductor plate 12, and the patch antennas 35 a to 35 d surround the shield cover 62 and the low noise amplification circuit unit 60. As described above, since a plurality of the conductor plates 12 are arranged on the front surface 12a of the ground conductor plate 12, a weight balance in the ground conductor plate 12 is ensured, and a burden on a support structure that fixes and supports the ground conductor plate 12 is reduced. . Furthermore, by arranging a plurality of the patch antennas 35a to 35d, the gain as the antenna device 10 can be increased.

  Furthermore, the patch antennas 35a to 35d have a laminated structure of the first positioning member 14, the feeding patches 16a to 16d, the second positioning members 18a to 18d, and the non-feeding patches 20a to 20d, so that the manufacturing process is performed. The assembly time of the antenna device 10 can be shortened, and the manufacturing cost of the antenna device 10 can be reduced.

  In the antenna device 10 described above, the patch antennas 35a to 35d and the low noise amplification circuit unit 60 are individually arranged on the front surface 12a of the ground conductor plate 12. However, instead of such a configuration, the ground antenna A low-loss and low-cost substrate is disposed on the front surface 12a of the conductor plate 12, and the patch antennas 35a to 35d and the low-noise amplifier circuit unit 60 are integrally formed on the substrate using, for example, a printing technique. It may be formed. In this case, since the patch antennas 35a to 35d and the low-noise amplifier circuit unit 60 are integrally formed with the substrate, the manufacturability of the antenna device 10 is improved and the antenna device 10 is thinned. can do.

  Of course, the antenna device according to the present invention is not limited to the above-described embodiment, and various configurations can be adopted without departing from the gist of the present invention.

It is a perspective view of the antenna device concerning this embodiment. It is a disassembled perspective view of the antenna apparatus of FIG. It is a bottom view of the ground conductor board and board | substrate in the antenna apparatus of FIG. It is sectional drawing along the IV-IV line of FIG. It is sectional drawing along the VV line of FIG. It is a circuit block diagram of the antenna apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Antenna apparatus 12 ... Ground conductor plate 14 ... 1st positioning member 16a-16d ... Feeding patch 18a-18d ... 2nd positioning member 20a-20d ... Non-feeding patch 22a-22d ... 3rd positioning member 24a-24d ... Screw 28a ˜28d, 78a˜78d… recesses 30a˜30d… projections 35a˜35d… patch antenna 60 ... low noise amplifier circuit unit 62 ... shield cover 64… substrates 66a˜66d… feeding conductors 68a, 68b ... antenna duplexer 76 ... Mounting member 82 ... Input terminals 84, 86 ... Output terminals 88a to 88d ... Matching circuits 90a, 90b ... Synthesis circuits 92a, 92b ... Low noise amplifier 94 ... Distribution circuit

Claims (4)

A ground conductor plate, an antenna for transmitting and receiving radio waves, a feeding circuit electrically connected to the antenna, a receiving circuit for amplifying a reception signal output from the antenna through the feeding circuit,
Have
The antenna, the feeding circuit, and the receiving circuit are disposed on one surface of the ground conductor plate, and the receiving circuit is covered with a shield cover that is electrically connected to the ground conductor plate. An antenna device. The antenna device according to claim 1, wherein
The receiving circuit is disposed on a substrate made of an electrically insulating material having a high dielectric constant,
A part of the power feeding circuit is formed on the substrate. The antenna device according to claim 1 or 2,
The shield cover and the receiving circuit are disposed in a central portion of the ground conductor plate,
A plurality of the antennas are arranged on one surface of the ground conductor plate so as to surround the shield cover and the receiving circuit. The antenna device according to any one of claims 1 to 3,
The antenna is a patch antenna laminated on a first positioning member disposed on one surface of the ground conductor plate,
The patch antenna is stacked on the first positioning member and electrically connected to the power feeding circuit, a second positioning member stacked on the power feeding patch, and the second positioning member. An antenna device comprising: a parasitic patch.

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