JPH1117446A - Antenna device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the deterioration of an array radiation pattern in a high frequency band by means of periodic property while arranging the two-frequency shared element antennas of a low frequency band and the high frequency band on the same opening by arraying only one kind two-frequency shared element antennas. SOLUTION: A phased array antenna 2 is used, where one kind two-frequency shared element antennas 1 by which the two frequency bands of the low frequency and the high frequency are shared are arrayed on an arrayal grid at every fixed interval. The two-frequency shared element antennas 1 are provided with a power feeding circuit 3a supplying microwave. The power feeding circuit 3a consists of a wave divider 6 provided at every two-frequency shared element antenna 1, a low frequency exchanging module 7, a high frequency exchanging module 8, a low frequency distributor 9 connected between the low frequency exchanging module 7 and a low frequency input/output end 11 and a high frequency distributor 10 connected between the high frequency exchanging module 8 and a high frequency input/output end 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a plurality of dual frequency element antennas, each element is connected to an amplifier and a variable phase shifter, and the phases of these phase shifters are controlled to electronically scan a beam. Alternatively, the present invention relates to an antenna device of a dual-frequency array antenna that shares two different frequency bands for performing pattern shaping or the like.

[0002]

2. Description of the Related Art FIG. 14 is a view for explaining an element arrangement of an antenna device of a conventional dual-frequency array antenna. In FIG. 14, 21 is a dual-frequency element antenna that can be used in high-frequency and low-frequency bands, and 22 is a high-frequency element antenna that can be used only in the high-frequency band.

FIG. 15 is a diagram showing a configuration of a feed circuit 3 of a conventional antenna device. In FIG. 15, reference numeral 21 denotes a dual-frequency element antenna composed of separate low-frequency element antennas 21a and high-frequency element antennas 21b, 22 denotes the high-frequency element antenna, 3 denotes these antennas 21,
The power supply circuit supplies power to the power supply 22. In the power supply circuit 3, 7 is a low-frequency transmitting / receiving module (low MDL) connected to the low-frequency element antenna 21a, 8 is a high-frequency transmitting / receiving module (high MDL) connected to the high-frequency element antenna 22, and 9 is A low-frequency distributor connected to the low-frequency transmitting / receiving module 7, a high-frequency distributor 10 connected to the high-frequency transmitting / receiving module 8, and a low-frequency input 11 connected to the low-frequency transmitting / receiving module 9. Output end,
Reference numeral 12 denotes a high frequency input / output terminal connected to the high frequency transmitting / receiving module 10.

Next, the operation will be described. First, in the case of low-frequency transmission, the low-frequency microwave input to the low-frequency input / output terminal 11 is distributed and supplied to the plurality of low-frequency transmitting / receiving modules 7 by the low-frequency distributor 9. Dual frequency element antenna 1 via low frequency transmitting / receiving module 7
Are radiated into space by the low-frequency element antenna 21a.

On the other hand, in the case of low frequency reception, FIG.
Is transmitted from the low frequency element antenna 21a of the dual frequency element antenna 1 to the low frequency transmission / reception module 7, and is output from the low frequency transmission / reception module 7 as a reception signal. The received signals are combined by the low frequency divider 9 and output from the low frequency input / output terminal 11.

In the case of high-frequency transmission, the high- and low-frequency microwaves input to the high-frequency input / output terminal 12 are distributed and supplied to a plurality of high-frequency transmitting / receiving modules 8 by a high-frequency distributor 10. Transmission / reception module 8
Are radiated to the space by the high-frequency element antenna 22 and the high-frequency element antenna 21b of the dual-frequency element antenna 1 via the antenna.

Further, in the case of high-frequency reception, the received high-frequency microwave is transmitted to the high-frequency transmission / reception module 8 from the high-frequency element antenna 22 and the high-frequency element antenna 21b of the dual-frequency element antenna 1 as reception signals. The high-frequency signal is output from the high-frequency transmission / reception module 8 and the output reception signal is synthesized by the high-frequency distributor 10.
It is output from the high frequency input / output terminal 12.

FIGS. 16 and 17 are an element arrangement diagram and a configuration diagram of another conventional antenna device.

First, an element arrangement diagram of the antenna device will be described. In FIG. 16, reference numeral 23 denotes a low-frequency element antenna usable only in a low-frequency band, and 23 denotes a high-frequency element antenna usable only in a high-frequency band. The operation is the same as the operation of the conventional antenna device shown in FIGS.

[0010]

However, in the conventional dual-frequency array antenna shown in FIGS. 14 and 15, when the antenna is used in one of the two frequency bands of low frequency and high frequency, the low frequency Element antenna 21
Since the radiation pattern of the high-frequency antenna 21b having the same configuration as that of the low-frequency element antenna 21a is affected by the coupling with the low-frequency element antenna 21a, the high-frequency band microwave radiated from the high-frequency element antenna 21b is The light is coupled to the element antenna 21a and re-emitted from the low-frequency element antenna 21a. For this reason, the radiation pattern of the high-frequency element antenna 21b is disturbed by the re-radiation, but the radiation pattern of the high-frequency element antenna 22 is not disturbed, so that the former disturbance has a periodicity of one wavelength or more for a high frequency band. become. In particular, dipoles and element antennas
When an element antenna having a height from the opening of the antenna or the like is employed, the dimensions of the element antenna are proportional to the wavelength of the band used, so that the low-frequency element antenna 21a has a larger aperture than the high-frequency element antenna 21b. The height of the element antenna from the surface increases, and the high frequency element antenna 2 is affected by the blocking (shielding) of the low frequency element antenna 21a.
There was a problem that the radiation pattern of 1b was greatly disturbed.

Further, when the radiation pattern of the high-frequency element antenna 21b is periodically disturbed, the side lobes rise as if grating lobes were generated. It is generally known that grating lobes are generated when element antennas are arranged at an element interval wider than one wavelength. However, if there is periodicity of the excitation amplitude and phase at intervals larger than one wavelength, the above-mentioned grating lobes are generated. There is also a problem that the side lobe level in the same angle direction as the angle increases.

Another conventional dual-frequency array antenna in which a low-frequency element antenna 23 is arranged between high-frequency element antennas 22 arranged as shown in FIG. 16 and FIG. Similar to the dual-frequency array antenna of FIGS. 14 and 15, when used in one of the two frequency bands, the radiation pattern of the high-frequency antenna 22 located near the low-frequency element antenna 23 Since the radiation pattern is affected by the coupling with the low-frequency element antenna 23, the radiation pattern of the high-frequency element antenna 22 is periodically disturbed, so that there is a problem that the side lobe rises as if a grating lobe occurs. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has two low frequency bands and a high frequency band.
It is an object of the present invention to provide an antenna device that can suppress deterioration of array radiation pattern characteristics in a high frequency band due to periodicity while arranging dual frequency element antennas on the same aperture.

[0014]

In order to solve the above-mentioned problems, the present invention provides one kind of dual-frequency element antenna which shares a plurality of low-frequency and high-frequency bands arranged on an arbitrary array lattice, And a power supply circuit for supplying microwaves to the dual frequency element antenna.

In particular, in the present invention, the power supply circuit may
A duplexer provided for each frequency sharing element antenna; a low-frequency transmitting / receiving module connected to each duplexer for amplifying or phase-converting a low-frequency microwave; and a high-frequency microwave connecting and connecting to each duplexer. A high-frequency transmitting / receiving module that amplifies or phase-converts a wave, and is connected between the low-frequency transmitting / receiving module and the low-frequency input / output terminal at arbitrary intervals to distribute and synthesize a low-frequency microwave. And a high-frequency distributor connected between the high-frequency transmitting / receiving module and the high-frequency input / output terminal for distributing and synthesizing high-frequency microwaves.

Further, instead of the low frequency transmitting / receiving module other than the low frequency transmitting / receiving module connected to the low frequency distributor, a dual frequency shared element antenna not connected to the low frequency transmitting / receiving element at the time of low frequency transmitting / receiving. Connected to a dummy resistor that suppresses re-radiation of

Further, instead of the low frequency transmitting / receiving module other than the low frequency transmitting / receiving module connected to the low frequency transmitting / receiving module, the end is opened or short-circuited and not connected to the low frequency transmitting / receiving low frequency transmitting / receiving module. A phase shifter for suppressing re-radiation from the dual-frequency element antenna is connected.

A feeder circuit connected to the dual-frequency element antenna at an arbitrary interval; a filter provided for each of the dual-frequency element antennas without the duplexer; A low-frequency transmission / reception module connected to each splitter for amplifying or phase-converting low-frequency microwaves, and a high-frequency transmission / reception module connected to each splitter and the filter for amplifying or phase-converting high-frequency microwaves A low frequency distributor connected between the low frequency transmitting / receiving module and the low frequency input / output terminal for distributing and synthesizing the low frequency microwave; a high frequency transmitting / receiving module and a high frequency input / output terminal And a high-frequency distributor for performing distribution and synthesis of high-frequency microwaves.

Further, a feeder circuit is connected to the dual-frequency antenna at arbitrary intervals, and a low-frequency feeder connected to each splitter for amplifying or phase converting low-frequency microwaves. A transmission / reception module, a high frequency transmission / reception module connected to each of the duplexer and the dual frequency shared element antenna not provided with the duplexer to perform amplification or phase conversion of a high frequency microwave, and the low frequency transmission / reception module; A low-frequency distributor connected between the low-frequency input / output terminal and the low-frequency microwave distributor for distributing and synthesizing the low-frequency microwave; and a high-frequency microwave distributor connected between the high-frequency transmitting / receiving module and the high-frequency input / output terminal. It comprises a high frequency distributor for performing distribution and synthesis, and a filter provided between the high frequency distributor and the high frequency input / output terminal.

A power supply circuit is provided for each of the dual-frequency element antennas and can be used in two high-frequency and low-frequency bands, and two high-frequency and low-frequency bands are connected to the wide-band module. And a duplexer connected between the broadband distributor and the low frequency input / output terminal and the high frequency input / output terminal.

Further, a power supply circuit is provided for each dual-frequency antenna and can be used in two high-frequency and low-frequency bands and a plurality of wide-band modules connected to the wide-band module at arbitrary intervals. And a filter connected to a wideband module other than the wideband module connected to the duplexer, and a low frequency microwave distribution and connected between the duplexer and the low frequency input / output end. A low frequency distributor for performing synthesis, and a high frequency distributor connected between the demultiplexer and the filter and the high frequency input / output terminal for performing distribution and synthesis of high frequency microwaves.

A plurality of wide-band modules which are connected to the dual-frequency element antenna at arbitrary intervals and which can be used in two high-frequency and low-frequency bands;
A duplexer connected to the broadband module, a filter connected to a dual-frequency element antenna not connected to the broadband module, and a high frequency transceiver connected to the filter for amplifying or phase converting high frequency microwaves A low frequency divider connected between the duplexer and the low frequency input / output end for distributing and synthesizing the low frequency microwave; and a duplexer and the high frequency transmitting / receiving module and a high frequency And a high-frequency distributor connected between the input and output terminals to distribute and combine high-frequency microwaves.

According to another aspect of the present invention, there is provided a high-frequency element antenna using a high-frequency band and a low-frequency element antenna using a low-frequency band, which are arranged on an arbitrary array lattice. A high-frequency transmitting / receiving module connected to each element antenna for amplifying or phase-converting a high-frequency microwave, a duplexer provided for each low-frequency element antenna, and a low-frequency microwave connected to each duplexer A low-frequency transmitting / receiving module and a dummy resistor for performing amplification or phase conversion of the high-frequency microwave and a high-frequency distributor connected between the high-frequency transmitting / receiving module and the high-frequency input / output end for distributing and synthesizing high-frequency microwaves; A low-frequency circuit connected between the low-frequency transmitting / receiving module and the low-frequency input / output terminal for distributing and synthesizing low-frequency microwaves And use the distributor, is made of.

According to another aspect of the present invention, in a thinned array antenna operating at only one frequency, a plurality of element antennas arranged on an arbitrary array lattice, and a microwave amplifier connected to the element antenna at arbitrary intervals are provided. Or, a transmitting / receiving module that performs phase conversion, a dummy resistor connected to an element antenna other than the element antenna connected to the transmitting / receiving module among the element antennas, and a transmitting / receiving module connected to the element antenna and an input / output terminal. And a distributor which is connected between the distributors and distributes and combines the microwaves.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 shows a configuration of an antenna device according to a first embodiment of the present invention. As shown in FIG. 1, in the first embodiment, a phased type in which one kind of dual-frequency element antenna 1 that can share two frequency bands of low frequency and high frequency is arranged at regular intervals on an array lattice. It is characterized in that an array antenna 2 is used.

FIG. 2 shows the configuration of the feeder circuit 3a of the antenna device according to the first embodiment shown in FIG. As shown in FIG. 2, a feeder circuit 3a according to the first embodiment includes a duplexer 6 provided for each of the dual-frequency element antennas 1 constituting the array antenna 2, and a low-frequency divider connected to each of the duplexers 6. A low frequency transmitting / receiving module 7 for amplifying or phase converting high frequency microwaves, a high frequency transmitting / receiving module 8 connected to each splitter 6 for amplifying or phase converting high frequency microwaves, every other or two A low-frequency distributor 9 that is connected between the low-frequency transmitting / receiving module 7 and the low-frequency input / output terminal 11 at arbitrary intervals, such as at intervals of three, and distributes and synthesizes low-frequency microwaves; A high frequency distributor 10 is connected between the high frequency transmitting / receiving module 8 and the high frequency input / output terminal 12 and distributes and combines high frequency microwaves.

FIGS. 3A and 3B show the configuration of the low frequency transmitting / receiving module 7 and the high frequency transmitting / receiving module 8, respectively. To explain the configuration, as shown in FIG. 3A, the low frequency transmitting / receiving module 7 includes module input / output terminals 13a and 13b, a phase shifter 14a, and switches 15a and 15a.
b, a high-output amplifier 16a, and a low-noise amplifier 17a. Also, the high-frequency transmitting / receiving module 8
Is the module input / output terminal 13 as shown in FIG.
c, 13d, phase shifter 14b, switches 15c, 15d,
It comprises a high output amplifier 16b and a low noise amplifier 17b.

Next, the operation will be described. First, in the case of low-frequency transmission, the low-frequency microwave input to the low-frequency input / output terminal 11 is distributed and supplied to the plurality of low-frequency transmitting / receiving modules 7 by the low-frequency distributor 9. . In the low-frequency transmitting / receiving module 7, as shown in FIG.
After a phase shift amount suitable for a desired beam directing direction is given, the signal is amplified by a high output amplifier 16a through a switch 15a which is tilted to the transmission side. The amplified microwave passes through the switch 15b lying down on the transmission side, is output from the module input / output end 13b, passes through the duplexer 6, and is radiated into space by the dual-frequency element antenna 1.

On the other hand, in the case of low-frequency reception, the received low-frequency microwave is used as a reception signal in FIG.
The signal is sent from the dual frequency element antenna 1 to the duplexer 6, and then
The signal is sent from the low frequency input / output terminal of the duplexer 6 to the low frequency transmitting / receiving module 7. In the low-frequency transmitting / receiving module 7 to which the low-frequency distributor 9 is not connected at the subsequent stage, FIG.
By controlling the phase of the phase shifter 14a in the module as shown in (a), re-radiation from the dual frequency element antenna 1 is suppressed. On the other hand, in the low-frequency transmission / reception module 7 to which the low-frequency distributor 9 is connected at the subsequent stage, FIG.
As shown in (a), the input received signal passes through the module input / output terminal 13b, and the switch 15 falling to the receiving side.
b, the signal is sent to the low noise amplifier 17a and amplified.
Next, the amplified reception signal passes through the phase shifter 14a via the switch 15a which is tilted to the reception side, and further passes through the module input / output terminal 13a.
Output from The output received signals are combined by the low frequency divider 9 and output from the low frequency input / output terminal 11.

In the case of high-frequency transmission, the high- and low-frequency microwaves input to the high-frequency input / output terminal 12 of the transmitting / receiving device 3 are distributed to a plurality of high-frequency transmitting / receiving modules 8 by the high-frequency distributor 10. Supplied. In the high-frequency transmitting / receiving module 8, as shown in FIG. 3B, the supplied microwave is input to the phase shifter 14b through the module input / output terminal 13c, and a phase shift amount suitable for a desired beam directing direction is given. Switch 15c that has fallen to the sending side after being
Through the high-power amplifier 16b. The amplified microwave passes through the switch 15d that is tilted to the transmission side, is output from the module input / output terminal 13d, and is radiated into space by the dual-frequency element antenna 1 and the dual-frequency element antenna 1.

On the other hand, in the case of high-frequency reception, the high-frequency microwave received as shown in FIG. 2 is sent to the duplexer 6 from the dual-frequency element antenna 1 as a reception signal.
Next, the signal is sent from the high frequency input / output terminal of the duplexer 6 to the high frequency transmitting / receiving module 8. In the high-frequency transmitting / receiving module 8, as shown in FIG. 3B, the input received signal passes through the module input / output terminal 13d, and is sent to the low-noise amplifier 17b via the switch 15d that falls on the receiving side. Amplified. Next, the amplified reception signal passes through the phase shifter 14b via the switch 15c which is tilted to the reception side, and is further output from the high frequency transmission / reception module 8 via the module input / output terminal 13c. The output received signals are combined by the high frequency distributor 10 and the high frequency input / output terminal 1
2 is output.

Therefore, according to the antenna apparatus of the first embodiment, by arranging one kind of dual-frequency element antenna in a predetermined arrangement, the interference between the antenna elements can be made the same for all elements. It is possible to prevent deterioration of antenna characteristics.

Embodiment 2 FIG. The antenna device according to the second embodiment uses only one kind of dual-frequency element antenna 1 shown in FIG. 1 as in the first embodiment, and is characterized in that the configuration of the feed circuit is improved. . FIG.
The configuration of the feeder circuit 3b of the antenna device according to the second embodiment is shown below. In the power supply circuit 3b according to the second embodiment, as shown in the figure, in the first embodiment shown in FIG. 2, instead of the low-frequency transmitting / receiving module 7 to which the low-frequency distributor 9 is not connected at the subsequent stage, a dummy resistor is used. 18 is connected to the low-frequency output terminal of the duplexer 6. Therefore, according to the antenna apparatus of the second embodiment, the dummy resistor 18 is connected to the low-frequency output terminal of the duplexer 6 connected to the dual-frequency element antenna 1, so that the phase shifter 14a is not provided. However, it is possible to suppress re-radiation from the dual-frequency element antenna 1 during low-frequency transmission and reception.

Embodiment 3 The antenna device according to the third embodiment is also characterized in that only one type of dual-frequency element antenna 1 shown in FIG. 1 is used and the configuration of the feed circuit is improved. FIG. 5 shows the configuration of the feeder circuit 3c of the antenna device according to the third embodiment. In the power supply circuit 3c according to the third embodiment, as shown in the figure, instead of the low-frequency transmitting / receiving module 7 in which the low-frequency distributor 9 is not connected at the subsequent stage in the first embodiment shown in FIG. An open or short phase shifter 14 is connected to the low frequency output terminal of the duplexer 6, so that the phase of the phase shifter 14 is appropriately controlled. For this reason, according to the antenna apparatus of the third embodiment, the phase shifter 14 can suppress re-radiation from the dual-frequency element antenna 1 at the time of low-frequency transmission and reception.

Embodiment 4 FIG. The antenna device of the fourth embodiment is also characterized by using only one kind of dual-frequency element antenna 1 shown in FIG. 1 and improving the configuration of the feed circuit. FIG. 6 shows a configuration of a feed circuit 3d of the antenna device according to the fourth embodiment. In the feeder circuit 3d according to the fourth embodiment, as shown in FIG. 6, a duplexer 6 connected to the dual-frequency element antenna 1 arranged as shown in FIG. 2 without vessel 6
Filter 19 provided for each frequency sharing element antenna 1
A low-frequency transmitting / receiving module 7 connected to each of the duplexers 6 for amplifying or phase-converting the low-frequency microwave;
A high-frequency transmitting / receiving module 8 connected to each of the duplexer 6 and the filter 19 for amplifying or phase-converting the high-frequency microwave, and a low-frequency transmitting / receiving module connected between the low-frequency transmitting / receiving module 7 and the low-frequency input / output terminal. A low-frequency distributor 9 for distributing and synthesizing waves, and a high-frequency distributor 10 connected between the high-frequency transmitting / receiving module 8 and the high-frequency input / output terminal 12 for distributing and synthesizing high-frequency microwaves. Have been. Therefore, according to the antenna device of the fourth embodiment, the filter 19
By adjusting the length of the feed line between the dual frequency element antenna 1 and the filter 19, re-radiation of low frequency from the dual frequency element antenna 1 can be suppressed.

Embodiment 5 The antenna device of the fifth embodiment is also characterized in that only one type of dual-frequency element antenna 1 shown in FIG. 1 is used and the configuration of the feed circuit is improved. FIG. 7 shows a configuration of a feed circuit 3e of the antenna device according to the fifth embodiment. In the feeder circuit 3e according to the fifth embodiment, as shown in FIG. 7, a duplexer 6 connected to the dual-frequency element antenna 1 arranged as shown in FIG. A low-frequency transmitting / receiving module 7 connected to each device 6 for amplifying or phase-converting a low-frequency microwave, and a duplexer 6 and a high-frequency connected to each two-frequency shared element antenna 1 not provided with the duplexer 6. A high frequency transmitting / receiving module 8 for amplifying or phase converting microwaves, and the low frequency transmitting / receiving module 7
And a low frequency distributor 9 connected between the high frequency transmitting / receiving module 8 and the high frequency input / output terminal 12 for distributing and synthesizing low frequency microwaves. It comprises a high frequency distributor 10 for distributing and synthesizing high frequency microwaves, and a filter 19 provided between the high frequency distributor 10 and the high frequency input / output terminal 12. Therefore, according to the antenna device of the fifth embodiment, it is not necessary to connect a filter to each of the dual-frequency element antennas 1 to which the duplexer 6 is not connected as in the fourth embodiment shown in FIG. Therefore, low frequency re-radiation from the dual-frequency element antenna 1 can be suppressed while reducing the number of components.

Embodiment 6 FIG. The antenna device of the sixth embodiment is also characterized in that only one kind of dual-frequency element antenna 1 shown in FIG. 1 is used and the configuration of the feed circuit is improved. FIG. 8 shows a configuration of a feeder circuit 3f of the antenna device according to the sixth embodiment. In the power supply circuit 3f of the sixth embodiment, as shown in FIG. 8, two high-frequency and low-frequency antennas are provided for each of the dual-frequency element antennas 1 constituting the array antenna 2 arranged as shown in FIG. Broadband module (wide MDL) usable in frequency band 2
0 and a broadband distributor 21 connected to the broadband module 20 and usable in two frequency bands of high frequency and low frequency.
And a duplexer 6 connected between the broadband distributor 21 and the input / output terminal 11 for low frequency and the input / output terminal 12 for high frequency.

FIG. 9 shows the configuration of the broadband module 20 in the feeder circuit 3f of the antenna device according to the sixth embodiment. This broadband module 20 basically has the configuration shown in FIG.
It has the same configuration as the low frequency transmitting / receiving module 7 and the high frequency transmitting / receiving module 8 shown in (a) and (b), and includes module input / output terminals 13e and 13f and a phase shifter 14
c, switches 15e and 15f, a high-output amplifier 16c, and a low-noise amplifier 17c. Therefore, according to the antenna device of the sixth embodiment, the wide-band module 20 eliminates the need for the low-frequency transmission / reception module 7 and the high-frequency transmission / reception module 8, and reduces the number of components while also reducing the number of components. Low-frequency re-radiation from the vehicle.

Embodiment 7 The antenna device of the seventh embodiment is also characterized in that only one kind of dual-frequency element antenna 1 shown in FIG. 1 is used and the configuration of the feed circuit is improved. FIG. 10 shows a configuration of a feed circuit 3g of the antenna device according to the seventh embodiment. In the feeder circuit 3g according to the seventh embodiment, a plurality of power supply circuits provided for each of the dual-frequency element antennas 1 constituting the array antenna 2 arranged as shown in FIG. Broadband module 20, a duplexer 6 connected to the broadband module 20 at an arbitrary interval, and a duplexer 6
And a filter 19 connected to the wideband module 20 other than the wideband module 20 connected to the low frequency input / output terminal 11 for distributing and synthesizing low frequency microwaves. Distributor 9 and duplexer 6
And a high-frequency distributor 10 connected between the filter 19 and the high-frequency input / output terminal 12 for distributing and synthesizing high-frequency microwaves. For this reason, according to the antenna device of the seventh embodiment, since the broadband module 20 is provided, the low-frequency transmitting / receiving module 7 and the high-frequency transmitting / receiving module 8 become unnecessary, and the number of components is reduced, while the dual-frequency module is used. Low frequency re-radiation from the element antenna 1 can be suppressed.

Embodiment 8 FIG. The antenna device according to the eighth embodiment is also characterized in that only one kind of dual-frequency element antenna 1 shown in FIG. 1 is used and the configuration of the feed circuit is improved. FIG. 11 shows a configuration of a feed circuit 3h of the antenna device according to the eighth embodiment. In the power supply circuit 3h according to the seventh embodiment, as shown in FIG. 11, two frequency bands of a high frequency and a low frequency are connected to the two-frequency shared element antenna 1 arranged as shown in FIG. , A plurality of broadband modules 20, a duplexer 6 connected to the wideband module 20, a filter 19 connected to the dual-frequency antenna 1 to which the wideband module 20 is not connected, and a connection to the filter 19. A high-frequency transmitting / receiving module for amplifying or phase-converting the high-frequency microwave, a duplexer 6 and a low-frequency input / output terminal 11
, A low-frequency distributor 9 for distributing and synthesizing low-frequency microwaves, and a high-frequency microwave connected between the duplexer 6 and the high-frequency transmitting / receiving module 8 and the high-frequency input / output terminal 12. And a high frequency distributor 10 for distributing and synthesizing the signals. For this reason, according to the antenna apparatus of the eighth embodiment, the low-frequency transmitting / receiving module 7 and the high-frequency transmitting / receiving module 8 become unnecessary, and the number of components is reduced, and the low-frequency transmitting / receiving Re-radiation can be suppressed.

Embodiment 9 The antenna device of the ninth embodiment also uses the high-frequency element antennas 22 and the low-frequency element antennas 23 arranged on an arbitrary arrangement lattice as shown in FIG. It is characterized by. FIG. 12 shows the configuration of the feeder circuit 3i of the antenna device according to the ninth embodiment. In the power supply circuit 3i of the ninth embodiment, as shown in FIG. 12, a high frequency transmitting / receiving module 22 connected to each high frequency element antenna 22 for amplifying or phase converting a high frequency microwave, and a low frequency element antenna 23 A transmitting / receiving module for low frequency 7 and a dummy resistor 18 connected to each of the duplexers 6 for amplifying or converting a low frequency microwave; a transmitting / receiving module for high frequency 8; A high-frequency distributor 10 connected between the input / output terminal 12 and a distributor for distributing and synthesizing high-frequency microwaves
, Low frequency transmitting / receiving module 7 and low frequency input / output terminal 1
1 and a low-frequency distributor 9 that distributes and combines low-frequency microwaves. Next, the operation will be described. When transmitting at a high frequency, the high and low frequency microwaves input to the high frequency input / output terminal 12 are distributed and supplied to the plurality of high frequency transmission / reception modules 8 by the high frequency distributor 10. In the high-frequency transmitting / receiving module 8, a phase shift amount suitable for a desired beam directing direction is given.
After being amplified, it is radiated into space by the high-frequency element antenna 22. At this time, the radiated microwave is directly received by the low-frequency element antenna 23),
Sent to The power of the microwave transmitted to the duplexer 6 is consumed by the dummy resistor 18 connected to the high-frequency terminal, so that re-radiation from the low-frequency element antenna 23 can be suppressed. In addition, instead of the dummy resistor 18,
The re-radiation from the low-frequency element antenna 23 can also be suppressed by connecting the phase shifter 19 whose ends are open or short-circuited and appropriately controlling the phase of the phase shifter 19.

Embodiment 10 FIG. One of the tenth embodiment
Even in the antenna device of the thinned array antenna operating only at the frequency, the element antennas 2 arranged on an arbitrary arrangement lattice
4 is used and the configuration of the power supply circuit 3j is improved. FIG. 13 shows the configuration of the feeder circuit 3j of the antenna device according to the tenth embodiment. In the power supply circuit 3j of the ninth embodiment, as shown in FIG. 13, a plurality of element antennas 24 arranged on an arbitrary array lattice, and microwave amplification or phase Transceiver module (MDL) 25 for conversion
And a dummy resistor 18 connected to an element antenna 24 other than the element antenna 24 to which the transmission / reception module 25 is connected among the element antennas 24, and between the transmission / reception module 25 to which the element antenna 24 is connected and the input / output terminal 27. And a low frequency distributor 26 which is connected and distributes and combines microwaves. Next, the operation will be described. The microwave input to the input / output terminal 27 is distributed and supplied to the plurality of transmitting / receiving modules 25 by the distributor 26.
In the transmission / reception module 25, the phase shift amount in the desired beam directing direction is given and amplified, and then the element antenna 2
4 radiates into space. At this time, the radiated microwave is directly received by the element antennas 24 other than the element array antenna 24 connected to the transmission / reception module 25. The power of the microwaves received by the element antennas 24 other than the element array antenna 24 connected to the transmission / reception module 25 is consumed by the connected dummy resistor 18, and the microwaves other than the element array antenna 24 connected to the transmission / reception module 25 are consumed. Re-radiation from the element antenna 24 can be suppressed. The element array antenna 24 connected to the transmission / reception module 25 can also be connected to the phase shifter 19 having an open or short-circuited end instead of the dummy resistor 18 and appropriately controlling the phase of the phase shifter 19. Re-radiation from other element antennas 24 can be suppressed.

In the first to tenth embodiments, the phased array antenna has been described. However, each element antenna has a receiver and an A / D converter, and a digital signal from each element is processed by a computer. Digital Beam Forming (DB that can obtain desired antenna characteristics)
F) The techniques of the first to eighth embodiments can be applied to the antenna.

[0044]

As described above, according to the present invention, in the dual-frequency array antenna, only one kind of dual-frequency element antenna 1 is arranged.
The interference between the array antenna elements can be made the same for all the elements, and deterioration of the antenna characteristics can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing an element arrangement of an antenna device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a feeder circuit 3a of the antenna device according to the first embodiment shown in FIG.

3 (a) and 3 (b) are block diagrams showing the configurations of a low frequency transmitting / receiving module 7 and a high frequency transmitting / receiving module 8, respectively.

FIG. 4 is a feeder circuit 3b of the antenna device according to the second embodiment.
FIG. 3 is a block diagram showing the configuration of FIG.

FIG. 5 is a feeder circuit 3c of the antenna device according to the third embodiment.
FIG. 3 is a block diagram showing the configuration of FIG.

FIG. 6 shows a feeder circuit 3d of the antenna device according to the fourth embodiment.
FIG. 3 is a block diagram showing the configuration of FIG.

FIG. 7 is a feeder circuit 3e of the antenna device according to the fifth embodiment.
FIG. 3 is a block diagram showing the configuration of FIG.

FIG. 8 shows a feeder circuit 3f of the antenna device according to the sixth embodiment.
FIG. 3 is a block diagram showing the configuration of FIG.

FIG. 9 is a block diagram showing a configuration of the broadband module 20.

FIG. 10 is a feeder circuit 3 of the antenna device according to the seventh embodiment.
It is a block diagram which shows the structure of g.

FIG. 11 is a feeder circuit 3 of the antenna device according to the eighth embodiment.
It is a block diagram which shows the structure of g.

FIG. 12 is a feeder circuit 3 of the antenna device according to the ninth embodiment.
It is a block diagram which shows the structure of g.

FIG. 13 is a block diagram showing a configuration of a feed circuit 3g of the antenna device according to the tenth embodiment.

FIG. 14 is a diagram illustrating an element arrangement of an antenna device of a conventional dual-frequency array antenna.

FIG. 15 is a diagram illustrating a configuration of a feed circuit of a conventional antenna device.

FIG. 16 is a diagram illustrating an element arrangement of an antenna device of another conventional dual-frequency array antenna.

FIG. 17 is a diagram illustrating a configuration of a feed circuit of another conventional antenna device.

[Explanation of symbols]

Reference Signs List 1 2 frequency shared element antenna 1, 2 phased array antenna, 3a-3j feeding circuit, 6 distributor, 7 low frequency transmitting / receiving module, 8 high frequency transmitting / receiving module, 9 low frequency distributor, 10 high frequency distributor, 1
1 Low frequency input / output terminal, 12 High frequency input / output terminal, 13
Module input / output terminal, 14 phase shifter, 15 switch, 16 high power amplifier (HPA: High Power Amplifi)
er), 17 Low Noise Amplifier (LNA)
r), 18 dummy resistors, 19 filters, 20 broadband modules, 21 broadband distributors, 22 high-frequency element antennas, 23 low-frequency element antennas, 24 element antennas, 25 transmission / reception modules, 26 distributors, 27
Input / output end.

Claims (11)

[Claims] 1. A dual-element antenna sharing a plurality of low-frequency and high-frequency bands arranged on an arbitrary array grid, and a feeder circuit for supplying microwaves to the dual-element antenna An antenna device comprising: 2. A low frequency transmitting / receiving module, wherein a power supply circuit is provided for each dual frequency shared element antenna, and a low frequency transmitting / receiving module which is connected to each of the duplexers and amplifies or phase converts low frequency microwaves. A high-frequency transmitting / receiving module that is connected to each of the duplexers and performs amplification or phase conversion of high-frequency microwaves, and is connected between the low-frequency transmitting / receiving module and the low-frequency input / output terminal for each arbitrary interval. A low-frequency distributor for distributing and synthesizing low-frequency microwaves, and a high-frequency distributor for distributing and synthesizing high-frequency microwaves connected between the high-frequency transceiver module and the high-frequency input / output terminal. The antenna device according to claim 1, wherein: 3. A dual frequency shared element antenna that is not connected to the low frequency divider during low frequency transmission / reception, instead of the low frequency transceiver module other than the low frequency transceiver module connected to the low frequency distributor. 3. The antenna device according to claim 2, wherein a dummy resistor for suppressing re-radiation of the antenna is connected. 4. A low-frequency transmitting / receiving module other than the low-frequency transmitting / receiving module connected to the low-frequency distributor is open / short-circuited at its end and is not connected to the low-frequency distributor during low-frequency transmitting / receiving. 3. The antenna device according to claim 2, wherein a phase shifter for suppressing re-radiation from the dual-frequency element antenna is connected. 5. A splitter in which a feed circuit is connected to the dual-frequency element antenna at an arbitrary interval, a filter provided for each of the dual-frequency element antennas without the splitter, A low-frequency transmission / reception module connected to each splitter for amplifying or phase-converting low-frequency microwaves, and a high-frequency transmission / reception module connected to each splitter and the filter for amplifying or phase-converting high-frequency microwaves A low frequency distributor connected between the low frequency transmitting / receiving module and the low frequency input / output terminal for distributing and synthesizing the low frequency microwave; a high frequency transmitting / receiving module and a high frequency input / output terminal 2. The antenna device according to claim 1, further comprising: a high-frequency distributor connected between the high-frequency power supply and the high-frequency microwave for performing distribution and synthesis of high-frequency microwaves. 6. A feeder circuit connected to the dual-frequency element antenna at arbitrary intervals, and a feeder circuit connected to each splitter for low-frequency microwave amplification or phase conversion. A transmission / reception module, a high frequency transmission / reception module connected to each of the duplexer and the dual frequency shared element antenna not provided with the duplexer to perform amplification or phase conversion of a high frequency microwave, and the low frequency transmission / reception module; A low-frequency distributor connected between the low-frequency input / output terminal and the low-frequency microwave distributor for distributing and synthesizing the low-frequency microwave; and a high-frequency microwave distributor connected between the high-frequency transmitting / receiving module and the high-frequency input / output terminal. 2. The high frequency distributor for performing distribution and synthesis, and a filter provided between the high frequency distributor and the high frequency input / output terminal. On-board antenna device. 7. A wide-band module provided with a feed circuit for each dual-frequency element antenna and usable in two high-frequency and low-frequency bands, and two high-frequency and low-frequency bands connected to the wide-band module. 2. A broadband divider usable in (1), and a duplexer connected between the broadband divider, the low frequency input / output terminal and the high frequency input / output terminal. Antenna device. 8. A plurality of wide-band modules provided for each dual-band antenna and usable in two high-frequency and low-frequency bands, and a power supply circuit connected to the wide-band module at an arbitrary interval. And a filter connected to a wideband module other than the wideband module connected to the duplexer, and a low frequency microwave distribution and connected between the duplexer and the low frequency input / output end. A low-frequency splitter for synthesizing, and a high-frequency splitter connected between the duplexer and the filter and the high-frequency input / output terminal for splitting and synthesizing high-frequency microwaves. The antenna device according to claim 1. 9. A plurality of broadband modules connected to a dual-frequency element antenna at arbitrary intervals and usable in two high-frequency and low-frequency bands, and a demultiplexer connected to the wideband module. A filter connected to a dual-frequency element antenna to which the broadband module is not connected, a high-frequency transmitting / receiving module connected to the filter for amplifying or phase-converting a high-frequency microwave; A low frequency distributor connected between the high frequency input / output terminal and the low frequency distributor for distributing and synthesizing the low frequency microwave, and connected between the duplexer and the high frequency transmitting / receiving module and the high frequency input / output terminal; 2. The antenna device according to claim 1, further comprising a high frequency distributor that distributes and combines high frequency microwaves. 10. A high-frequency element antenna using a high-frequency band and a low-frequency element antenna using a low-frequency band, which are arranged on an arbitrary array lattice, and connected to each of the high-frequency element antennas. A high-frequency transmission / reception module for amplifying or phase-converting a high-frequency microwave, a duplexer provided for each of the low-frequency element antennas, and a low-frequency microwave amplifying or phase-converting connected to each of the duplexers. -Frequency transmitting / receiving module and dummy resistor for performing high-frequency microwave distribution and synthesis, which are connected between the high-frequency transmitting / receiving module and the high-frequency input / output end, and the low-frequency transmitting / receiving module And a low-frequency distributor connected between the low-frequency input / output terminal and the low-frequency microwave for distribution and synthesis. An antenna device, comprising: 11. A plurality of element antennas arranged on an arbitrary array lattice, a transmission / reception module connected to the element antenna at an arbitrary interval to perform microwave amplification or phase conversion, and the transmission / reception module among the element antennas A dummy resistor connected to an element antenna other than the connected element antenna, and a distributor connected between the transmission / reception module to which the element antenna is connected and the input / output end to distribute and combine microwaves, An antenna device for a thinned array antenna that operates at only one frequency.