A transceiver integrated VICTS phased array antenna

Abstract

The present invention discloses a transceiver integrated VICTS phased array antenna, which includes a radiation layer, a planar waveguide layer and a feeding layer arranged in sequence from top to bottom; the feeding layer is used for transmitting the TE10 mode input therein and converting it into a quasi-TEM mode to be coupled to the planar waveguide layer, the planar waveguide layer is used for transmitting the quasi-TEM mode and coupling the quasi-TEM mode to the radiation layer, and the radiation layer is used for radiating the quasi-TEM mode into free space; the advantages are that the functions of transmitting and receiving can be realized simultaneously. When used in a mobile satellite communication system, the volume, cost and power consumption of the mobile satellite communication system can be reduced, and the beam pointing of the transmitting frequency band and the receiving frequency band can be made consistent.

Description

Technical Field

[0001] The present invention relates to a VICTS antenna, and more particularly to a VICTS phased array antenna with consistent beam pointing. Background Art

[0002] The CTS (Continuous Transverse Stub) array antenna was first proposed by the Raytheon Company in the United States in the 1990s, and a large number of planar-structured antennas have been developed. As a further evolution of the CTS antenna array, the VICTS (Variable inclination continuous transverse stub) technology can achieve a two-dimensional beam scanning array with a low profile, low power consumption, and strong mechanical robustness on the basis of inheriting the original high efficiency.

[0003] Because the receiving frequency and the transmitting frequency of the VICTS phased array antenna have a large interval, it is easy to generate dispersion when the two frequency bands work on the common radiation surface, making it difficult to keep the receiving beam and the transmitting beam pointing consistent. In addition, the design of the common radiation surface for the receiving frequency band and the transmitting frequency band is prone to radiation occlusion, resulting in problems such as gain drop. Therefore, the existing VICTS phased array antennas are usually designed to work in a single-band mode.

[0004] When the VICTS phased array antenna is used in a mobile satellite communication system in the Ku band and the Ka band, two VICTS phased array antennas are required in the mobile satellite communication system. One works in the transmitting frequency band to achieve the transmitting function in the uplink, and the other works in the receiving frequency band to achieve the receiving function in the downlink. This leads to a doubling of the number of servo motors required for the mobile satellite communication system, not only increasing the volume, which is not conducive to the overall compactness of the system, but also resulting in a significant increase in cost and power consumption. In addition, the two VICTS phased array antennas are independently designed, and it is difficult to achieve consistent beam pointing for the receiving frequency band and the transmitting frequency band. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a transceiver-integrated VICTS phased array antenna that can simultaneously achieve the transmitting and receiving functions, can reduce the volume, cost, and power consumption of the mobile satellite communication system when used in the mobile satellite communication system, and can achieve consistent beam pointing for the transmitting frequency band and the receiving frequency band.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a transceiver-integrated VICTS phased array antenna, comprising a radiation layer, a planar waveguide layer and a feeding layer arranged in order from top to bottom; the feeding layer is used to transmit the TE10 mode input therein and convert it into a quasi-TEM mode and couple it to the planar waveguide layer; the planar waveguide layer is used to transmit the quasi-TEM mode and couple the quasi-TEM mode to the radiation layer; the radiation layer is used to radiate the quasi-TEM mode to free space;

[0007] The radiation layer includes a first metal disc, a metal partition and a radiation unit. The metal partition is fixedly arranged on the upper end surface of the first metal disc and divides the upper end surface of the first metal disc into a first end surface and a second end surface of equal area. The first end surface is located on the left side of the metal partition, and the second end surface is located on the right side of the metal partition. The radiation unit includes a first radiation branch group arranged on the left side of the metal partition and a second radiation branch group arranged on the right side of the metal partition. The first radiation branch group is composed of 21 first CTS radiation branches arranged at equal intervals from front to back and perpendicular to the metal partition, and the second radiation branch group is composed of 14 second CTS radiation branches arranged at equal intervals from front to back and perpendicular to the metal partition. Each of the first CTS radiation branches is realized by opening a hollow T-section air groove on the first metal disc downward along the first end surface, and each of the second CTS radiation branches is realized by opening a hollow T-section air groove on the first metal disc downward along the second end surface.

[0008] The planar waveguide layer includes a second metal disk, a first planar waveguide, a second planar waveguide, a first slow-wave structure and a second slow-wave structure. The first planar waveguide and the second planar waveguide are arranged in parallel and spaced apart on the second metal disk, and the first planar waveguide is located directly below the first radiation branch node group, and the second planar waveguide is located directly below the second radiation branch node group. The first planar waveguide and the second planar waveguide are respectively realized by grooving on the second metal disk. The first slow-wave structure and the second slow-wave structure are located in the second metal disk, and the first slow-wave structure is located below the first planar waveguide. The upper surface of the first slow-wave structure is bonded and connected to the lower surface of the first planar waveguide. The second slow-wave structure is located below the second planar waveguide, and the upper surface of the second slow-wave structure is bonded and connected to the lower surface of the second planar waveguide. The first slow-wave structure and the second slow-wave structure are respectively realized by using comb-tooth slow-wave structures.

[0009] The feeding layer includes a third metal disk and a feeding unit disposed on the third metal disk. The feeding unit includes a first feeding network and a second feeding network. The first feeding network and the second feeding network are respectively realized by slotting on the third metal disk, and the two are arranged in parallel at left and right intervals. The first feeding network is located directly below the first planar waveguide, and the first feeding network is connected to the first planar waveguide through a planar waveguide corner. The second feeding network is located directly below the second planar waveguide, and the second feeding network is connected to the second planar waveguide through a planar waveguide corner. The first feeding network includes a first rectangular waveguide power divider and a first mode adapter. The first rectangular waveguide power divider is connected to the first mode adapter, and power is fed to the first planar waveguide through the first mode adapter. The second feeding network includes a second rectangular waveguide power divider and a second mode adapter. The second rectangular waveguide power divider is connected to the second mode adapter, and power is fed to the second planar waveguide through the second mode adapter. The first rectangular waveguide power divider and the second rectangular waveguide power divider have the same transverse cross-sectional height. The first rectangular waveguide power divider can generate a TE10 mode under the excitation of an external excitation signal, and after power distribution of the generated TE10 mode, it is equally transmitted to the first mode adapter. The first mode adapter converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the first planar waveguide for efficient transmission. The second rectangular waveguide power divider can generate a TE10 mode under the excitation of an external excitation signal, and after power distribution of the generated TE10 mode, it is equally transmitted to the second mode adapter. The second mode adapter converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the second planar waveguide for efficient transmission; the first metal disk, the second metal disk, and the third metal disk are coaxially arranged and have equal diameters. The lower surface of the second metal disk is completely attached to and fixed to the upper surface of the third metal disk. The first metal disk is rotatably mounted on the second metal disk, and there is a gap between the first metal disk and the second metal disk to ensure that the first metal disk can rotate smoothly relative to the second metal disk;

[0010] The first radiation stub group, the first planar waveguide, the first slow-wave structure, and the first feeding network constitute the transmitting end of the phased array antenna for realizing the transmitting function. The second radiation stub group, the second planar waveguide, the second slow-wave structure, and the second feeding network constitute the receiving end of the VICTS phased array antenna for realizing the antenna receiving function. When the VICTS phased array antenna realizes the receiving function, the Ku-band electromagnetic wave emitted by the satellite enters the second planar waveguide through the second radiation stub group and is transmitted along the second planar waveguide in the form of a quasi-TEM mode to the second mode adapter. The second mode adapter converts the quasi-TEM mode into a TE10 mode. After passing through the second rectangular waveguide power divider, the TE10 mode is synthesized into a Ku-band TE10 mode and output to the external signal receiving end. During this process, the relative rotation of the first metal disk and the second metal disk is used to realize the scanning of the receiving beam in the horizontal azimuth. By changing the phase difference between two adjacent second CTS radiation stubs through the second slow-wave structure, the phase gradient of the second end face is further changed to realize the scanning of the receiving beam's elevation angle. When the VICTS phased array antenna realizes the transmitting function, the first rectangular waveguide power divider generates a Ka-band TE10 mode under the excitation of an external excitation signal. After the power of the Ka-band TE10 mode is equally divided through the first rectangular waveguide power divider, it is transmitted to the first mode adapter. The first mode adapter converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the first planar waveguide. The quasi-TEM mode transmitted along the first planar waveguide forms a beam through the first radiation stub group and radiates energy into free space. During this process, the relative rotation of the first metal disk and the second metal disk is used to realize the scanning of the transmitting beam in the horizontal azimuth. By changing the phase difference between adjacent first CTS radiation stubs through the first slow-wave structure, the phase gradient of the first end face is changed to realize the scanning of the transmitting beam's elevation angle.

[0011] Compared with the prior art, the advantages of the present invention are as follows: the transmitting end of the phased array antenna is constituted by the first radiation stub group, the first planar waveguide, the first slow-wave structure and the first feeding network, which is used to realize the transmitting function; the receiving end of the VICTS phased array antenna is constituted by the second radiation stub group, the second planar waveguide, the second slow-wave structure and the second feeding network, which is used to realize the antenna receiving function; when the VICTS phased array antenna realizes the receiving function, the Ku-band electromagnetic wave emitted by the satellite enters the second planar waveguide through the second radiation stub group, and is transmitted along the second planar waveguide in the form of a quasi-TEM mode to the second mode adapter. The second mode adapter converts the quasi-TEM mode into a TE10 mode. After passing through the second rectangular waveguide power divider, the TE10 modes are combined into a Ku-band TE10 mode and output to the external signal receiving end. During this process, the relative rotation of the first metal disk and the second metal disk is used to realize the scanning of the receiving beam in the horizontal azimuth. By changing the phase difference between two adjacent second CTS radiation stubs through the second slow-wave structure, the phase gradient of the second end face is further changed to realize the scanning of the receiving beam in the elevation angle; when the VICTS phased array antenna realizes the transmitting function, the first rectangular waveguide power divider generates a Ka-band TE10 mode under the excitation of an external excitation signal. After the power of the Ka-band TE10 mode is equally divided through the first rectangular waveguide power divider, it is transmitted to the first mode adapter. The first mode adapter converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the first planar waveguide. The quasi-TEM mode transmitted along the first planar waveguide forms a beam through the first radiation stub group and radiates energy into free space. During this process, the relative rotation of the first metal disk and the second metal disk is used to realize the scanning of the transmitting beam in the horizontal azimuth. By changing the phase difference between two adjacent first CTS radiation stubs through the first slow-wave structure, the phase gradient of the first end face is further changed to realize the scanning of the transmitting beam in the elevation angle. Therefore, the VICTS phased array antenna of the present invention can realize both receiving and transmitting functions at the same time. By pre-deflecting the first metal disk and the second metal disk by a certain angle, the radiation occlusion problem between the transmitting beam and the receiving beam can be solved, and the gain drop caused by radiation occlusion is minimized. It is ensured that the directions of the transmitting beam and the receiving beam are consistent during beam scanning, which is beneficial to improving the communication quality of the VICTS phased array antenna. When used in a mobile satellite communication system, the volume, cost and power consumption of the mobile satellite communication system can be reduced, and the beam directions of the transmitting frequency band and the receiving frequency band can be made consistent, improving the satellite communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is an exploded view of a transmit-receive integrated VICTS phased array antenna of the present invention;

[0013] Figure 2 is a perspective view of a transmit-receive integrated VICTS phased array antenna of the present invention;

[0014] Figure 3 This is a top view of a transmit-receive integrated VICTS phased array antenna of the present invention;

[0015] Figure 4 is Figure 3 a cross-sectional view of a transmit-receive integrated VICTS phased array antenna of the present invention along the A-A direction in

[0016] Figure 5 is Figure 3 a cross-sectional view of a transmit-receive integrated VICTS phased array antenna of the present invention along the B-B direction in

[0017] Figure 6 This is a schematic diagram of the feed layer of a transmit-receive integrated VICTS phased array antenna of the present invention;

[0018] Figure 7 This is a gain curve graph of a transmit-receive integrated VICTS phased array antenna of the present invention;

[0019] Figure 8 This is the beam scanning direction pattern of a transmit-receive integrated VICTS phased array antenna of the present invention. Detailed implementation manner

[0020] The present invention will be further described in detail below in conjunction with the embodiments with reference to the accompanying drawings.

[0021] Embodiment: As Figures 1-6 shown, a transmit-receive integrated VICTS phased array antenna includes a radiation layer 1, a planar waveguide layer 2, and a feed layer 3 arranged in order from top to bottom; the feed layer 3 is used to transmit the TE10 mode input therein and convert it into a quasi-TEM mode and couple it to the planar waveguide layer, the planar waveguide layer is used to transmit the quasi-TEM mode and couple the quasi-TEM mode to the radiation layer 1, and the radiation layer 1 is used to radiate the quasi-TEM mode into free space;

[0022] The radiation layer 1 includes a first metal disc 4, a metal partition 5 and a radiation unit. The metal partition 5 is fixedly arranged on the upper end surface of the first metal disc 4, and divides the upper end surface of the first metal disc 4 into a first end surface and a second end surface of equal area. The first end surface is located on the left side of the metal partition 5, and the second end surface is located on the right side of the metal partition 5. The radiation unit includes a first radiation branch group arranged on the left side of the metal partition 5 and a second radiation branch group arranged on the right side of the metal partition 5. The first radiation branch group is composed of 21 first CTS radiation branches 6 arranged at equal intervals from front to back and perpendicular to the metal partition 5. The second radiation branch group is composed of 14 second CTS radiation branches 7 arranged at equal intervals from front to back and perpendicular to the metal partition 5. Each first CTS radiation branch 6 is realized by opening a hollow T-section air groove on the first metal disc 4 downward along the first end surface, and each second CTS radiation branch 7 is realized by opening a hollow T-section air groove on the first metal disc 4 downward along the second end surface.

[0023] The slab waveguide layer 2 includes a second metal disk 8, a first slab waveguide 9, a second slab waveguide 10, a first slow-wave structure 11, and a second slow-wave structure 12. The first slab waveguide 9 and the second slab waveguide 10 are arranged in parallel and spaced apart on the second metal disk 8, and the first slab waveguide 9 is located directly below the first radiation branch node group, and the second slab waveguide 10 is located directly below the second radiation branch node group. The first slab waveguide 9 and the second slab waveguide 10 are respectively realized by grooving the second metal disk 8. The first slow-wave structure 11 and the second slow-wave structure 12 are located in the second metal disk 8. The first slow-wave structure 11 is located below the first slab waveguide 9. The upper surface of the first slow-wave structure 11 is bonded to the lower surface of the first slab waveguide 9. The second slow-wave structure 12 is located below the second slab waveguide 10. The upper surface of the second slow-wave structure 12 is bonded to the lower surface of the second slab waveguide 10. The first slow-wave structure 11 and the second slow-wave structure 12 are respectively realized by comb-tooth slow-wave structures.

[0024] The feeding layer 3 includes a third metal disk 13 and a feeding unit disposed on the third metal disk 13. The feeding unit includes a first feeding network 131 and a second feeding network 132. The first feeding network 131 and the second feeding network 132 are respectively realized by slotting on the third metal disk 13, and the two are arranged in parallel with a certain interval from left to right. The first feeding network 131 is located directly below the first planar waveguide 9, and the first feeding network 131 is connected to the first planar waveguide 9 through a first planar waveguide corner 14. The second feeding network 132 is located directly below the second planar waveguide 10, and the second feeding network 132 is connected to the second planar waveguide 10 through a second planar waveguide corner 15. The first feeding network 131 includes a first rectangular waveguide power divider 16 and a first mode adapter 17. The first rectangular waveguide power divider 16 is connected to the first mode adapter 17, and power is fed to the first planar waveguide 9 through the first mode adapter 17. The second feeding network 132 includes a second rectangular waveguide power divider 18 and a second mode adapter 19. The second rectangular waveguide power divider 18 is connected to the second mode adapter 19, and power is fed to the second planar waveguide 10 through the second mode adapter 19. The first rectangular waveguide power divider 16 and the second rectangular waveguide power divider 18 have the same transverse cross-sectional height. The first rectangular waveguide power divider 16 can generate a TE10 mode under the excitation of an external excitation signal, and after power distribution of the generated TE10 mode, it is equally transmitted to the first mode adapter 17. The first mode adapter 17 converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the first planar waveguide 9 for efficient transmission. The second rectangular waveguide power divider 18 can generate a TE10 mode under the excitation of an external excitation signal, and after power distribution of the generated TE10 mode, it is equally transmitted to the second mode adapter 19. The second mode adapter 19 converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the second planar waveguide 10 for efficient transmission. The first metal disk 4, the second metal disk 8, and the third metal disk 13 are coaxially arranged and have the same diameter. The lower surface of the second metal disk 8 is completely attached to and fixed to the upper surface of the third metal disk 13. There is a gap between the first metal disk 4 and the second metal disk 8. The first metal disk 4 is rotatably mounted on the second metal disk 8, and the second metal disk 8 and the third metal disk 13 are integrally formed;

[0025] The first radiation stub group, the first planar waveguide 9, the first slow-wave structure 11, and the first feeding network 131 constitute the transmitting end of the phased array antenna, which is used to realize the transmitting function. The second radiation stub group, the second planar waveguide 10, the second slow-wave structure 12, and the second feeding network 132 constitute the receiving end of the VICTS phased array antenna, which is used to realize the antenna receiving function. When the VICTS phased array antenna realizes the receiving function, the Ku-band electromagnetic wave emitted by the satellite enters the second planar waveguide 10 through the second radiation stub group and is transmitted along the second planar waveguide 10 in the form of a quasi-TEM mode to the second mode adapter 19. The second mode adapter 19 converts the quasi-TEM mode into a TE10 mode. The TE10 mode is synthesized into a Ku-band TE10 mode after passing through the second rectangular waveguide power divider 18 and then output to the external signal receiving end. During this process, the relative rotation of the first metal disc 4 and the second metal disc 8 is used to realize the scanning of the receiving beam in the horizontal azimuth. By changing the phase difference between two adjacent second CTS radiation stubs 7 of the second slow-wave structure 12, the phase gradient of the second end face is further changed to realize the scanning of the receiving beam in the elevation angle. When the VICTS phased array antenna realizes the transmitting function, the first rectangular waveguide power divider 16 generates a Ka-band TE10 mode under the excitation of an external excitation signal. The Ka-band TE10 mode is equally divided in power after being power-divided by the first rectangular waveguide power divider 16 and then transmitted to the first mode adapter 17. The first mode adapter 17 converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the first planar waveguide 9. The quasi-TEM mode transmitted along the first planar waveguide 9 forms a beam through the first radiation stub group and radiates energy into free space. During this process, the relative rotation of the first metal disc 4 and the second metal disc 8 is used to realize the scanning of the transmitting beam in the horizontal azimuth. By changing the phase difference between two adjacent first CTS radiation stubs 6 of the first slow-wave structure 11, the phase gradient of the first end face is further changed to realize the scanning of the transmitting beam in the elevation angle.

[0026] The simulation experiment of the transmit-receive integrated VICTS phased array antenna of the present invention was carried out in the HFSS simulation software environment. Among them, for the transmit-receive integrated VICTS phased array antenna of the present invention, the elevation angle gain curves at three frequency points of 19 GHz, 20 GHz, and 21 GHz under the 0 deg horizontal direction angle profile are as Figure 7 shown. The transmit-receive integrated VICTS phased array antenna of the present invention simulated the beam scanning direction diagrams at five combinations of phi = 68 deg, RO = 10 deg; phi = 87.5 deg, RO = 20 deg; phi = 97.5 deg, RO = 30 deg; phi = 0 deg, RO = 0 deg at the frequency points of 20 GHz and 30 GHz respectively as Figure 8 shown, where phi represents the horizontal direction angle and RO represents the pre-deflection angle. Analysis Figure 7It can be seen that as the simulation frequency increases, the elevation angle of the maximum gain direction of the transceiver integrated VICTS phased array antenna of the present invention gradually decreases, that is, as the frequency of the TEM mode signal increases, the phase difference between adjacent two second CTS radiation branches gradually increases, the elevation angle of the formed equal phase surface increases, resulting in the decrease of the elevation angle of the receiving beam. Analysis Figure 8 It can be seen that when the simulation frequencies are 20 GHz and 30 GHz, respectively taking the same PHI-RO combination, the elevation angles of the maximum gain are basically the same, which shows that the transmitting beam and the receiving beam of the transceiver integrated VICTS phased array antenna of the present invention can achieve consistent beam pointing.

Claims

1. A transceiver integrated VICTS phased array antenna, characterized in that It comprises a radiation layer, a planar waveguide layer and a feeding layer arranged in order from top to bottom; the feeding layer is used to transmit the TE10 mode input therein and convert it into a quasi-TEM mode and couple it to the planar waveguide layer; the planar waveguide layer is used to transmit the quasi-TEM mode and couple the quasi-TEM mode to the radiation layer; the radiation layer is used to radiate the quasi-TEM mode to free space; The radiation layer includes a first metal disc, a metal partition and a radiation unit. The metal partition is fixedly arranged on the upper end surface of the first metal disc and divides the upper end surface of the first metal disc into a first end surface and a second end surface of equal area. The first end surface is located on the left side of the metal partition, and the second end surface is located on the right side of the metal partition. The radiation unit includes a first radiation branch group arranged on the left side of the metal partition and a second radiation branch group arranged on the right side of the metal partition. The first radiation branch group is composed of 21 first CTS radiation branches arranged at equal intervals from front to back and perpendicular to the metal partition, and the second radiation branch group is composed of 14 second CTS radiation branches arranged at equal intervals from front to back and perpendicular to the metal partition. Each of the first CTS radiation branches is realized by opening a hollow T-section air groove on the first metal disc downward along the first end surface, and each of the second CTS radiation branches is realized by opening a hollow T-section air groove on the first metal disc downward along the second end surface. The planar waveguide layer includes a second metal disk, a first planar waveguide, a second planar waveguide, a first slow-wave structure and a second slow-wave structure. The first planar waveguide and the second planar waveguide are arranged in parallel and spaced apart on the second metal disk, and the first planar waveguide is located directly below the first radiation branch node group, and the second planar waveguide is located directly below the second radiation branch node group. The first planar waveguide and the second planar waveguide are respectively realized by grooving on the second metal disk. The first slow-wave structure and the second slow-wave structure are located in the second metal disk, and the first slow-wave structure is located below the first planar waveguide. The upper surface of the first slow-wave structure is bonded and connected to the lower surface of the first planar waveguide. The second slow-wave structure is located below the second planar waveguide, and the upper surface of the second slow-wave structure is bonded and connected to the lower surface of the second planar waveguide. The first slow-wave structure and the second slow-wave structure are respectively realized by using comb-tooth slow-wave structures. The described feeding layer includes a third metal disc and a feeding unit disposed on the third metal disc. The feeding unit includes a first feeding network and a second feeding network. The first feeding network and the second feeding network are respectively realized by slotting on the third metal disc, and the two are arranged in parallel at left and right with a certain interval. The first feeding network is located directly below the first planar waveguide, and the first feeding network is connected to the first planar waveguide through a planar waveguide corner. The second feeding network is located directly below the second planar waveguide, and the second feeding network is connected to the second planar waveguide through a planar waveguide corner. The first feeding network includes a first rectangular waveguide power divider and a first mode adapter. The first rectangular waveguide power divider is connected to the first mode adapter, and power is fed to the first planar waveguide through the first mode adapter. The second feeding network includes a second rectangular waveguide power divider and a second mode adapter. The second rectangular waveguide power divider is connected to the second mode adapter, and power is fed to the second planar waveguide through the second mode adapter. The first rectangular waveguide power divider and the second rectangular waveguide power divider have the same transverse cross-sectional height. The first rectangular waveguide power divider can generate a TE10 mode under the excitation of an external excitation signal, and after power-dividing the generated TE10 mode, it is equally transmitted to the first mode adapter. The first mode adapter converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the first planar waveguide for efficient transmission. The second rectangular waveguide power divider can generate a TE10 mode under the excitation of an external excitation signal, and after power-dividing the generated TE10 mode, it is equally transmitted to the second mode adapter. The second mode adapter converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the second planar waveguide for efficient transmission. The first metal disc, the second metal disc, and the third metal disc are coaxially arranged and have the same diameter. The lower surface of the second metal disc is completely attached to and fixed to the upper surface of the third metal disc. There is a gap between the first metal disc and the second metal disc. The first metal disc is rotatably mounted on the second metal disc; The first radiation stub group, the first planar waveguide, the first slow-wave structure, and the first feeding network constitute the transmitting end of the phased array antenna for realizing the transmitting function. The second radiation stub group, the second planar waveguide, the second slow-wave structure, and the second feeding network constitute the receiving end of the VICTS phased array antenna for realizing the antenna receiving function. When the VICTS phased array antenna realizes the receiving function, the Ku-band electromagnetic wave emitted by the satellite enters the second planar waveguide through the second radiation stub group and is transmitted along the second planar waveguide in the form of a quasi-TEM mode to the second mode adapter. The second mode adapter converts the quasi-TEM mode into a TE10 mode. After passing through the second rectangular waveguide power divider, the TE10 mode is synthesized into a Ku-band TE10 mode and output to the external signal receiving end. During this process, the relative rotation of the first metal disk and the second metal disk is used to realize the scanning of the receiving beam in the horizontal azimuth. By changing the phase difference between two adjacent second CTS radiation stubs through the second slow-wave structure, the phase gradient of the second end face is further changed to realize the scanning of the receiving beam in the elevation angle. When the VICTS phased array antenna realizes the transmitting function, the first rectangular waveguide power divider generates a Ka-band TE10 mode under the excitation of an external excitation signal. After the power of the Ka-band TE10 mode is equally divided through the first rectangular waveguide power divider, it is transmitted to the first mode adapter. The first mode adapter converts the TE10 mode transmitted to it into a quasi-TEM mode and feeds it to the first planar waveguide. The quasi-TEM mode transmitted along the first planar waveguide forms a beam through the first radiation stub group and radiates energy into free space. During this process, the relative rotation of the first metal disk and the second metal disk is used to realize the scanning of the transmitting beam in the horizontal azimuth. By changing the phase difference between two adjacent first CTS radiation stubs through the first slow-wave structure, the phase gradient of the first end face is further changed to realize the scanning of the transmitting beam in the elevation angle.

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