Phased array antenna and phased array antenna module

Abstract

To provide compact phased array antenna and phased array antenna module that support multiple frequency bands.SOLUTION: A phased array antenna 15 includes a plurality of antenna elements E1 that transmit and receive high-frequency signals in a first frequency band and a plurality of antenna elements E2 that transmit and receive high-frequency signals in a second frequency band, and the antenna elements E1 and E2 are arranged on the same plane PL.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a phased array antenna and a phased array antenna module.

Background Art

[0002] A phased array antenna is an antenna that can freely change a beam pattern (antenna directivity) by adjusting at least one of the intensity and phase of a signal (transmission signal) supplied to a plurality of antenna elements or a signal (reception signal) supplied from a plurality of antenna elements. In recent years, such phased array antennas have been used in various fields such as the automotive field and the communication field.

[0003] A phased array antenna module is a module including a plurality of antenna elements and a beamformer integrated circuit. The beamformer integrated circuit includes a plurality of phase controllers corresponding to the plurality of antenna elements and a circuit for setting set values of phases for the plurality of phase controllers. In addition, there may be an intensity controller corresponding to the plurality of antenna elements. By setting appropriate set values in the phase controller and the intensity controller and adjusting the phases and intensities of the plurality of signals supplied from (or to) the plurality of antenna elements, a necessary beam pattern is formed.

[0004] In recent years, phased array antenna modules have been required to support a plurality of frequency bands (multi-band or wide-band). Patent Document 1 below discloses an active phased array antenna that changes a frequency band by changing an antenna aperture. Patent Document 2 below discloses an array antenna capable of supporting multiple bands by providing a resonance structure in antenna elements.

Prior Art Documents

Patent Documents

[0005] Patent Document 1 Japanese Patent Application Laid-Open No. 2004-247922 Patent Document 2 Japanese Patent Application Laid-Open No. 2008-199588 Summary of the Invention Problems to be Solved by the Invention

[0006] By the way, the active phased array antenna disclosed in Patent Document 1 described above has a problem that the structure becomes complicated and is not suitable for miniaturization because a structure for making the antenna aperture variable is required. Further, the array antenna disclosed in Patent Document 2 described above has a problem that the broadband of the semiconductor chip needs to be increased according to the band of the antenna, and there is a risk that the characteristics of the entire module deteriorate.

[0007] The present invention has been made in view of the above circumstances, and an object thereof is to provide a small phased array antenna and a phased array antenna module corresponding to a plurality of frequency bands. Means for Solving the Problems

[0008] In order to solve the above problems, a phased array antenna (15) according to a first aspect of the present invention includes a plurality of first antenna elements (E1) that transmit and receive high-frequency signals in a first frequency band, and a plurality of second antenna elements (E2) that transmit and receive high-frequency signals in a second frequency band, and the first antenna elements and the second antenna elements are arranged on the same plane (PL).

[0009] In the phased array antenna of the present invention, since a plurality of first antenna elements that transmit and receive high-frequency signals in a first frequency band and a plurality of second antenna elements that transmit and receive high-frequency signals in a second frequency band are arranged on the same plane, a small phased array antenna corresponding to a plurality of frequency bands can be provided.

[0010] The phased array antenna according to the second aspect of the present invention is the phased array antenna according to the first aspect of the present invention, wherein the first antenna element and the second antenna element are arranged point-symmetric with respect to the center of the phased array antenna or line-symmetric with respect to a straight line passing through the center of the phased array antenna.

[0011] The phased array antenna according to the third aspect of the present invention is the phased array antenna according to the second aspect of the present invention, wherein the first antenna element and the second antenna element are evenly arranged on the same plane.

[0012] In the phased array antenna according to the fourth aspect of the present invention, which is the phased array antenna according to any one of the first to third aspects of the present invention, when the frequency representing the first frequency band is f1 and the frequency representing the second frequency band is f2, the number N1 of the first antenna elements and the number N2 of the second antenna elements are represented by the following formula. N1:N2=f1 2 :f2 2

[0013] The phased array antenna according to the fifth aspect of the present invention is the phased array antenna according to any one of the first to fourth aspects of the present invention, wherein the first antenna element and the second antenna element are patch antennas.

[0014] The phased array antenna module (1) according to the first aspect of the present invention includes the phased array antenna according to any one of the first to fifth aspects of the present invention, a first beamformer integrated circuit (14A) that controls at least one of the phase and intensity of a signal supplied to the first antenna element or a signal supplied from the first antenna element, and a second beamformer integrated circuit (14B) that controls at least one of the phase and intensity of a signal supplied to the second antenna element or a signal supplied from the second antenna element.

[0015] The phased array antenna module according to the second aspect of the present invention is the phased array antenna module according to the first aspect of the present invention, and includes a first frequency conversion integrated circuit (11A) that performs frequency conversion on a signal supplied to the first beamformer integrated circuit or a signal supplied from the first beamformer integrated circuit, and a second frequency conversion integrated circuit (11B) that performs frequency conversion on a signal supplied to the second beamformer integrated circuit or a signal supplied from the second beamformer integrated circuit.

Advantages of the Invention

[0016] According to the present invention, there is an effect that a small phased array antenna and a phased array antenna module corresponding to a plurality of frequency bands can be provided.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0018] Hereinafter, with reference to the drawings, a phased array antenna and a phased array antenna module according to an embodiment of the present invention will be described in detail. In the drawings referred to below, for ease of understanding, the dimensions of each member are appropriately changed and illustrated as necessary.

[0019] 〈Phased Array Antenna Module〉 FIG. 1 is a block diagram showing the main configuration of a phased array antenna module according to an embodiment of the present invention. As shown in FIG. 1, the phased array antenna module 1 of this embodiment includes frequency conversion ICs 11A and 11B, band-pass filters 12A and 12B, couplers / splitters 13A and 13B, a plurality of beamformer ICs 14A and 14B, and a phased array antenna 15. Note that the phased array antenna 15 includes a first array antenna 15A and a second array antenna 15B.

[0020] The frequency conversion IC 11A (first frequency conversion integrated circuit), band-pass filter 12A, coupler / splitter 13A, a plurality of beamformer ICs 14A (first beamformer integrated circuit), and the first array antenna 15A are provided, for example, to correspond to a first frequency band (e.g., 28 GHz band) in the millimeter wave band. The frequency conversion IC 11B (second frequency conversion integrated circuit), band-pass filter 12B, coupler / splitter 13B, a plurality of beamformer ICs 14B (second beamformer integrated circuit), and the second array antenna 15B are provided, for example, to correspond to a second frequency band (e.g., 39 GHz band) in the millimeter wave band.

[0021] Such a phased array antenna module 1 can perform wireless communication using different frequency bands (e.g., 28 GHz band, 39 GHz band) in the millimeter wave band and can perform beamforming capable of freely changing the beam pattern individually for each of the different frequency bands. That is, the phased array antenna module 1 of this embodiment corresponds to a plurality of frequency bands (is multi-band or broadband).

[0022] The phased array antenna module 1 is configured such that, for example, a plurality of ICs (Integrated Circuits) are mounted on one surface of a substrate such as a known printed circuit board, and an antenna array is mounted on the other surface. That is, the frequency conversion ICs 11A and 11B, the band-pass filters 12A and 12B, the couplers / splitters 13A and 13B, and the plurality of beamformer ICs 14A and 14B described above are mounted on one surface of the substrate, and the phased array antenna 15 described above is mounted on the other surface of the substrate.

[0023] The frequency conversion IC 11A is an IC that performs frequency conversion of a signal supplied to the beamformer IC 14A or a signal supplied from the beamformer IC 14A. Specifically, the frequency conversion IC 11A uses the local transmission signal LO1 to perform frequency conversion between the RF signal S11 having the IF signal frequency and the RF signal S12 having the frequency at which the beamformer IC 14A and the first array antenna 15A transmit and receive. Note that the frequency band of the RF signal S12 is, for example, the 28 GHz band.

[0024] The band-pass filter 12A transmits the frequency band of the RF signal transmitted and received by the beamformer IC 14A and the first array antenna 15A, and blocks frequencies other than the frequency band of the RF signal. That is, the band-pass filter 12A is provided to remove unnecessary high-frequency signals from the RF signal transmitted and received by the beamformer IC 14A and the first array antenna 15A.

[0025] The coupler / splitter 13A distributes the RF signal output from the band-pass filter 12A to each of the plurality of beamformer ICs 14A. The coupler / splitter 13A also combines the RF signals received by each of the plurality of beamformer ICs 14A and outputs the combined signal to the band-pass filter 12A.

[0026] The beamformer IC 14A is an IC that controls the beam pattern of the first array antenna 15A. Each of the beamformer ICs 14A is connected to each of a plurality of antenna elements E1 (first antenna elements) that make up the first array antenna 15A. For example, each of the beamformer ICs 14A may be connected to each of the plurality of antenna elements E1 for horizontal polarization and each of the plurality of antenna elements E1 for vertical polarization. Note that a plurality of beamformer ICs 14A are provided in the phased array antenna module 1, and these have the same configuration.

[0027] The beamformer IC 14A includes a relay circuit 21 and a plurality of RF front-ends 22. The relay circuit 21 is connected to the coupler / splitter 13A and the plurality of RF front-ends 22, and relays RF signals transmitted and received between the coupler / splitter 13A and the plurality of RF front-ends 22. For example, each of the RF signals distributed by the coupler / splitter 13A is distributed to each of the plurality of RF front-ends 22, and the RF signals output from the plurality of RF front-ends 22 are combined and output to the coupler / splitter 13A.

[0028] The RF front-end 22 is provided in the same number as the antenna elements E1 included in the first array antenna 15A, and is connected so as to correspond one-to-one with the antenna elements E1. The RF front-end 22 adjusts the gain and phase of the RF signal transmitted and received by the corresponding antenna element E1 using a beam table used for beamforming. Here, the beam table is a look-up table in which a plurality of combinations of phase shift amount setting values and gain setting values set according to the beam pattern of the first array antenna 15A to be controlled are stored. Note that a plurality of RF front-ends 22 are provided in the beamformer IC 14A, and these have the same configuration.

[0029] The RF front end 22 includes a phase shifter 31, a switch 32, a variable gain amplifier 33, a power amplifier 34, a switch 35, a low noise amplifier 36, and a variable gain amplifier 37. The phase shifter 31 is provided between the relay circuit 21 and the switch 32, and adjusts the phase shift amount of the passing RF signal according to the phase shift amount set value of the beam table.

[0030] A transmission path R1 and a reception path R2 are provided between the switch 32 and the switch 35. The transmission path R1 is the path through which the RF signal output to the antenna element E1 passes, and the reception path R2 is the path through which the RF signal input from the antenna element E1 passes. The variable gain amplifier 33 and the power amplifier 34 are provided on the transmission path R1, and the low noise amplifier 36 and the variable gain amplifier 37 are provided on the reception path R2.

[0031] The switch 32 and the switch 35 switch, at a specified time interval, whether to connect the transmission path R1 or the reception path R2 to the antenna element E1. Thereby, the phased array antenna module 1 can transmit and receive high-frequency signals as a time-division multiplexing system.

[0032] The variable gain amplifier 33 adjusts the intensity of the RF signal passing through the transmission path R1 according to the gain set value of the beam table. The power amplifier 34 amplifies the RF signal passing through the transmission path R1 at a predetermined amplification rate. By adjusting the phase amount of the RF signal from the relay circuit 21 toward the switch 32 with the phase shifter 31 and adjusting the intensity of the RF signal passing through the transmission path R1 with the variable gain amplifier 33, the beam pattern of the radio wave transmitted from the phased array antenna module 1 can be changed.

[0033] The low-noise amplifier 36 amplifies the RF signal input from the switch 35 at a predetermined amplification factor. The variable-gain amplifier 37 adjusts the intensity of the RF signal passing through the reception path R2 according to the gain setting value of the beam table. By adjusting the intensity of the RF signal passing through the reception path R2 with the variable-gain amplifier 37 and adjusting the phase amount of the RF signal heading from the switch 32 to the relay circuit 21 with the phase shifter 31, the beam pattern of the radio wave received by the phased array antenna module 1 can be changed.

[0034] The first array antenna 15A includes a plurality of antenna elements E1 arranged on a plane. For example, the plurality of antenna elements E1 are arranged on the other surface of a substrate such as the aforementioned known printed circuit board (the surface opposite to the surface on which a plurality of ICs are mounted). The antenna element E1 is, for example, a patch antenna.

[0035] The frequency conversion IC 11B is an IC that performs frequency conversion of a signal supplied to the beamformer IC 14B or a signal supplied from the beamformer IC 14B. Specifically, the frequency conversion IC 11B performs frequency conversion between the RF signal S21 at the IF signal frequency and the RF signal S22 at the frequency at which the beamformer IC 14B and the second array antenna 15B transmit and receive, using the local transmission signal LO2. Note that the frequency band of the RF signal S22 is, for example, the 39 GHz band.

[0036] As described above, the frequency conversion IC 11A to the first array antenna 15A are provided, for example, to correspond to the first frequency band (for example, the 28 GHz band) in the millimeter wave band, and the frequency conversion IC 11B to the second array antenna 15B are provided, for example, to correspond to the second frequency band (for example, the 39 GHz band) in the millimeter wave band. Thus, the frequency conversion IC 11A to the first array antenna 15A and the frequency conversion IC 11B to the second array antenna 15B only differ in the frequency bands they handle, and their basic configurations are the same. Therefore, except for necessary explanations, detailed descriptions of the frequency conversion IC 11B to the second array antenna 15B are omitted.

[0037] The second array antenna 15B includes a plurality of antenna elements E2 (second antenna elements) arranged on a plane. For example, the plurality of antenna elements E2 are arranged on the other surface of a substrate such as the aforementioned known printed circuit board (the surface opposite to the surface on which a plurality of ICs are mounted). The antenna element E2 is, for example, a patch antenna. The plurality of antenna elements E1 included in the first array antenna 15A and the plurality of antenna elements E2 included in the second array antenna 15B are arranged on the same plane. Hereinafter, the phased array antenna 15 including the first array antenna 15A and the second array antenna 15B will be described in detail.

[0038] 〈Phased Array Antenna〉 FIG. 2 is a diagram showing a configuration example of a phased array antenna according to an embodiment of the present invention. As shown in FIG. 2, the phased array antenna 15 is formed on a plane PL having a rectangular shape in plan view. The plane PL is, for example, the other surface of a substrate such as the aforementioned known printed circuit board (the surface opposite to the surface on which a plurality of ICs are mounted).

[0039] Each of the plurality of antenna elements E1 constituting the first array antenna 15A and the plurality of antenna elements E2 constituting the second array antenna 15B is a patch antenna having a rectangular shape in plan view. In FIG. 2, the antenna element E1 and the antenna element E2 are shown to have the same size (area). However, since the frequency of the high-frequency signal transmitted and received by the antenna element E1 is different from the frequency of the high-frequency signal transmitted and received by the antenna element E2, the sizes (areas) of the antenna element E1 and the antenna element E2 are different.

[0040] As shown in FIG. 2, the plurality of antenna elements E1 constituting the first array antenna 15A and the plurality of antenna elements E2 constituting the second array antenna 15B are arranged on the same plane PL. These plurality of antenna elements E1 and plurality of antenna elements E2 are arranged at equal intervals on the plane PL.

[0041] In the example shown in Fig. 2(a), the antenna elements E1 and the antenna elements E2 are evenly arranged on the plane PL. Specifically, in the example shown in Fig. 2(a), the number of the antenna elements E1 and the number of the antenna elements E2 are the same, and 32 each (64 in total) are provided. These 64 antenna elements E1 and antenna elements E2 are arranged in 8 rows and 8 columns so as to appear alternately in the two directions of the X direction and the Y direction in the figure. That is, the antenna elements E1 and the antenna elements E2 are arranged so as to form a checkered pattern.

[0042] In the example shown in Fig. 2(b), the antenna elements E1 and the antenna elements E2 are arranged symmetrically with respect to the center C of the phased array antenna 15 point - symmetrically, or line - symmetrically with respect to a straight line passing through the center C of the phased array antenna 15 (a straight line parallel to the X - axis or the Y - axis). Specifically, in the example shown in Fig. 2(b), the number of the antenna elements E1 and the number of the antenna elements E2 are different. 44 antenna elements E1 and 20 antenna elements E2 are provided. These 64 antenna elements E1 and antenna elements E2 are arranged symmetrically with respect to the center C of the phased array antenna 15 point - symmetrically, or line - symmetrically with respect to a straight line passing through the center C of the phased array antenna 15 (a straight line parallel to the X - axis or the Y - axis).

[0043] Note that the number and arrangement of the antenna elements E1 and the antenna elements E2 shown in Fig. 2(b) are merely an example and are not limited to those shown in Fig. 2(b). The number and arrangement of the antenna elements E1 and the antenna elements E2 can be arbitrary as long as they are arranged symmetrically with respect to the center C of the phased array antenna 15 point - symmetrically, or line - symmetrically with respect to a straight line passing through the center C of the phased array antenna 15 (a straight line parallel to the X - axis or the Y - axis).

[0044] Here, let the frequency representing the first frequency band be f1, and the frequency representing the second frequency band be f2. Note that the frequency f1 representing the first frequency band is, for example, 28 GHz, and the frequency f2 representing the second frequency band is, for example, 39 GHz. Also, let the number of antenna elements E1 be N1, and the number of antenna elements E2 be N2. The antenna elements E1 and E2 may be provided such that the following equation (1) is satisfied. N1:N2=f1 2 :f2 2 …(1)

[0045] That is, the antenna elements E1 and E2 may be provided such that the ratio of the number N1 of antenna elements E1 to the number N2 of antenna elements E2 is equal to the ratio of the square of the frequency f1 representing the first frequency band to the square of the frequency f2 representing the second frequency band. By doing so, it is expected that the average antenna-to-antenna distance ratio becomes λ1:λ2, and the degradation of the beam pattern can be suppressed. Note that λ1 is the wavelength of the high-frequency signal having the frequency f1 representing the first frequency band, and λ2 is the wavelength of the high-frequency signal having the frequency f2 representing the second frequency band.

[0046] Note that depending on the frequency f1 representing the first frequency band and the frequency f2 representing the second frequency band, there may be a case where the above equation (1) cannot be satisfied. In such a case, the ratio of the number N1 of antenna elements E1 to the number N2 of antenna elements E2 may be set to a value that is closest to the ratio of the square of the frequency f1 representing the first frequency band to the square of the frequency f2 representing the second frequency band.

[0047] For example, consider the case where the frequency f1 representing the first frequency band is 28 GHz and the frequency f2 representing the second frequency band is 39 GHz. In this case, from the above equation (1), the number N1 of antenna elements E1 can be set to 22, and the number N2 of antenna elements E2 can be set to 42. Here, the case where the sum of the number N1 of antenna elements E1 and the number N2 of antenna elements E2 is 64 has been described as an example, but the sum of the number N1 of antenna elements E1 and the number N2 of antenna elements E2 may be a number other than 64.

[0048] As described above, in this embodiment, a plurality of antenna elements E1 for transmitting and receiving high-frequency signals in the first frequency band and a plurality of antenna elements E2 for transmitting and receiving high-frequency signals in the second frequency band are arranged on the same plane to form the phased array antenna 15. Therefore, a small phased array antenna 15 corresponding to a plurality of frequency bands can be provided.

[0049] As described above, the phased array antenna and the phased array antenna module according to an embodiment of the present invention have been described. However, the present invention is not limited to the above-described embodiment, and can be freely changed within the scope of the present invention. For example, in the above embodiment, an example in which the antenna elements E1 and the antenna elements E2 are evenly arranged on the plane PL (see FIG. 2(a)), and an example in which the antenna elements E1 and the antenna elements E2 are arranged point-symmetric with respect to the center C of the phased array antenna 15, or line-symmetric with respect to a straight line passing through the center C of the phased array antenna 15 (a straight line parallel to the X-axis or the Y-axis) (see FIG. 2(b)) have been described. However, the arrangement of the antenna elements E1 and the antenna elements E2 is not limited to the examples shown in FIGS. 2(a) and 2(b), and can be arbitrarily changed.

[0050] For example, the antenna elements E1 and the antenna elements E2 do not necessarily have to be arranged regularly, and may be arranged irregularly (randomly). By arranging them in such a manner, for example, it becomes possible to form a beam pattern having a high intensity in a specific direction.

[0051] Also, the antenna elements E1 and the antenna elements E2 do not necessarily have to be arranged at equal intervals in the X direction and the Y direction as shown in FIGS. 2(a) and 2(b), and may be arranged in a state where there are gaps here and there. By arranging them in such a manner, it becomes possible to adjust the shape of the beam pattern to a desired shape.

[0052] Also, the number of beamformer ICs 14A and 14B and the number of RF front-ends 22 provided therein can be appropriately changed according to the number of antenna elements E1 and antenna elements E2. That is, if the number of antenna elements E1 and antenna elements E2 increases, the number of beamformer ICs 14A and 14B and the number of RF front-ends 22 provided therein can be increased accordingly. Conversely, if the number of antenna elements E1 and antenna elements E2 decreases, the number of beamformer ICs 14A and 14B and the number of RF front-ends 22 provided therein can be decreased accordingly.

[0053] Furthermore, in the above-described embodiment, the phased array antenna 15 and the phased array antenna module 1 that can support two frequency bands (the first frequency band and the second frequency band) have been described, but they can also support three or more frequency bands. Also, in the above-described embodiment, the 28 GHz band is exemplified as the first frequency band and the 39 GHz band is exemplified as the second frequency band. However, the first frequency band and the second frequency band are not limited to these frequency bands and can be set to any frequency band. For example, it can be set to any frequency band in the millimeter wave band (26 to 300 GHz band). As an example, it can be set to the 28 GHz band, 38 GHz band, 47 GHz band, 60 GHz band, etc.

Example

[0054] FIG. 3 is a diagram showing the configuration of the phased array antenna in the example. In this example, the first frequency band is the 28 GHz band and the second frequency band is the 39 GHz band. From the above-described formula (a), the number N1 of antenna elements E1 is set to 22 and the number N2 of antenna elements E2 is set to 42. As shown in FIG. 3, a total of 64 antenna elements E1 and antenna elements E2 are arranged in 8 rows and 8 columns.

[0055] Specifically, four antenna elements E2 are arranged at the center of the phased array antenna 15, and fourteen antenna elements E1 are arranged so as to surround the four antenna elements E2. In addition, two antenna elements E1 are respectively arranged at the four corners of the phased array antenna 15. The remaining antenna elements E2 are arranged to fill the portions other than the center portion of the phased array antenna 15 where the antenna elements E1 are not arranged.

[0056] FIG. 4 is a simulation result showing the characteristics of the phased array antenna shown in FIG. 3. In FIG. 4,

[0100] ,

[0110] ,

[0010] , etc. attached around the circle indicate the azimuth from the center of the phased array antenna 15, and the size of the circle indicates the angle with respect to the axis passing through the center of the phased array antenna 15.

[0057] For example, the azimuth

[0100] indicates the azimuth of +X from the center of the phased array antenna 15 in FIG. 3, and the azimuth

[0010] indicates the azimuth of +Y from the center of the phased array antenna 15 in FIG. 3. In addition, the numerical value "0" attached to the center of the circle indicates the axis passing through the center of the phased array antenna 15, and the circle with the size of the numerical value "60" attached indicates that the angle with respect to the axis passing through the center of the phased array antenna 15 is 60 degrees.

[0058] The simulation result shown in FIG. 4 is the simulation result of the beam pattern when beamforming is performed so that the intensity in the direction where the azimuth is

[0100] and the angle is "40" is increased in the phased array antenna 15 shown in FIG. 3. Referring to FIG. 4, it was confirmed that in both the 28 GHz beam pattern and the 39 GHz beam pattern, the intensity in the direction where the azimuth is

[0100] and the angle is "40" is higher than the intensity in other directions. Thereby, it was confirmed that the phased array antenna 15 shown in FIG. 3 can correspond to both the first frequency band (28 GHz) and the second frequency band (39 GHz).

Description of Symbols

[0059] 1…Phased array antenna module, 11A, 11B…Frequency conversion IC, 14A, 14B…Beamformer IC, 15…Phased array antenna, E1…Antenna element, E2…Antenna element, PL…Plane

Claims

1. A plurality of first antenna elements for transmitting and receiving high-frequency signals in a first frequency band, A plurality of second antenna elements for transmitting and receiving high-frequency signals in a second frequency band, comprising The first antenna elements and the second antenna elements are arranged on the same plane, A phased array antenna.

2. The first antenna elements and the second antenna elements are arranged point-symmetric with respect to the center of the phased array antenna or line-symmetric with respect to a straight line passing through the center of the phased array antenna. The phased array antenna according to claim 1.

3. The first antenna elements and the second antenna elements are evenly arranged on the same plane. The phased array antenna according to claim 1.

4. When the frequency representing the first frequency band is f 1 and the frequency representing the second frequency band is f 2 Then, the number N 1 of the first antenna elements and the number N 2 of the second antenna elements are the phased array antenna according to claim 1, which is represented by the following formula. N 1 : N 2 = f 1 2 : f 2 2

5. The first antenna elements and the second antenna elements are patch antennas. The phased array antenna according to claim 1.

6. A phased array antenna according to any one of claims 1 to 5, A first beamformer integrated circuit for controlling at least one of the phase and intensity of a signal supplied to the first antenna element or a signal supplied from the first antenna element, A second beamformer integrated circuit that controls at least one of the phase and intensity of a signal supplied to the second antenna element or a signal supplied from the second antenna element; A phased array antenna module comprising: **Claim 7** A first frequency conversion integrated circuit that performs frequency conversion of a signal supplied to the first beamformer integrated circuit or a signal supplied from the first beamformer integrated circuit; A second frequency conversion integrated circuit that performs frequency conversion of a signal supplied to the second beamformer integrated circuit or a signal supplied from the second beamformer integrated circuit; The phased array antenna module according to claim 6, comprising:

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