A fully metal independent adjustable dual-circular polarization transmissive and reflective integrated array antenna

Abstract

The present invention discloses a fully metallic independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna. The antenna is fed by a linearly polarized horn. The transmissive and reflective integrated array antenna comprises a plurality of transmissive and reflective integrated units. Each transmissive and reflective integrated unit is composed of a single-layer metal plate with dumbbell-shaped slots hollowed out thereon. By changing the slot opening size, rotating the unit structure, and mirroring, 360° phase coverage and bidirectionally independently adjustable dual-circularly polarized beams for transmission and reflection can be achieved. The fully metallic independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna proposed by the present invention has a simple structure, low cost, stable performance in harsh environments, increased functions compared with other transmissive and reflective integrated array antennas, and improved performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of antennas, and particularly relates to an all-metal independently adjustable dual-circular polarization transmissive and reflective integrated array antenna. Background Art

[0002] In applications such as the new generation of satellite communication, synthetic aperture radar, and electromagnetic imaging, with the continuous improvement of system requirements, especially the increasingly strict requirements for the high integration, multi-functionality, and environmental adaptability of the antenna front-end structure, traditional antenna arrays or electromagnetic functional surfaces can often only achieve a single transmission or reflection function, and it is difficult to meet multiple requirements such as signal synthesis, beam reconfiguration, and space saving. This limitation severely restricts the efficient and flexible system design. Therefore, the transmissive and reflective integrated array antenna structure has gradually become a research and development hotspot.

[0003] The advantage of the transmissive and reflective integrated array antenna lies in its ability to simultaneously achieve the transmission and reflection functions of electromagnetic waves in the same array, thereby significantly improving the functional density and space utilization efficiency of the system. By simultaneously achieving the transmission and reflection functions on the same array, the system can effectively utilize limited space resources, reduce the volume and weight of the array, and simultaneously perform multiple electromagnetic wave processing tasks, which is particularly suitable for occasions with limited space or high requirements for environmental adaptability.

[0004] At present, most of the existing transmissive and reflective integrated array antenna structures use multi-layer dielectric substrates to meet the integration requirements of transmission and reflection functions. However, dielectric substrates often face significant dielectric loss problems in the high-frequency band, and the materials have poor stability and complex processing technology. These problems limit their applications in high-power, high-frequency band or extreme environments to a certain extent.In 2018, Cai T, Wang G M, Fu X L, et al. (Cai T, Wang G M, Fu X L, et al. High-Efficiency Metasurface with Polarization-Dependent Transmission and Reflection Properties for Both Reflectarray and Transmitarray[J]. IEEE Transactions on Antennas and Propagation, 2018, 66(6):3219-3224.) proposed an innovative three-layer dielectric substrate and four-layer metal layer structure, which can significantly improve the bandwidth of the transmit-reflect integrated array antenna and achieve 0°-360° phase adjustment by changing the length of the metal patch; in 2022, Liu X, Yan Z, Wang E, et al. (Liu X, Yan Z, Wang E, et al. Dual-Band Orthogonally-Polarized Dual-Beam ReflectTransmit-Array with a Linearly Polarized Feeder [J]. IEEE Transactions on Antennas and Propagation, 2022, 70(9):8596-8601.) proposed to use a four-layer dielectric substrate structure to achieve transmission and reflection functions, and achieve 360° phase control by changing the size of the dipole; in 2023, Yang W X, Chen K, Zhao J M, et al. (Yang W X, Chen K, Zhao J M, et al. A Wideband High-Efficiency Transmit-Reflect-Array Antenna for Bidirectional Radiations With Distinct Circular Polarizations Based on a Metasurface [J]. IEEE Transactions on Antennas and Propagation, 2023, 71(4):1610-1614.) proposed a structure using a three-layer dielectric substrate and a one-layer metal layer to achieve a transmit-reflect integrated array antenna by reflecting left-handed circularly polarized waves and transmitting right-handed circularly polarized waves. However, the application of these dielectric structures has relatively large dielectric losses in the high-frequency band and poor stability in extreme environments such as outer space.

[0005] Compared with the dielectric substrate structure, the all-metal structure has significant advantages in the transmission and processing of electromagnetic waves. Metal materials have excellent electrical conductivity and thermal stability, which can provide stronger environmental adaptability in high-power and high-frequency applications, and are suitable for the requirements of high-temperature, extreme climate conditions or high-power tasks. In 2018, Yang Fan et al. (Yang F, Deng R, Xu S, et al. Design and Experiment of a Near-Zero-Thickness High-Gain Transmit-Reflect-Array Antenna Using Anisotropic Metasurface[J]. IEEE Transactions on Antennas and Propagation, 2018, 66(6):2853-2861.) proposed a single-layer metal plate structure that can realize a high-gain transmit-reflect integrated array antenna with bidirectional simultaneous radiation; in 2024, Zhou Q, Gao L, Guo L. (Zhou Q, Gao L, Guo L. A Metal-Only Reflect-Transmit-Array Antenna With Polarization-Dependent Operations[J]. IEEE antennas and wireless propagation letters, 2024, 23(11): 3679-3683.) proposed a structure using three-layer metal plates, and by reflecting y-polarized waves, transmitting x-polarized waves, and achieving polarization rotation, a new type of all-metal transmit-reflect integrated array antenna was successfully designed. These all-metal structures not only possess excellent electromagnetic properties but also effectively overcome the dielectric loss problem of traditional dielectric structures in the high-frequency band, with stronger stability and higher environmental adaptability.

[0006] The polarization state of electromagnetic waves has an important impact on its propagation performance and anti-interference ability, especially in complex propagation environments. Circularly polarized waves are widely used in space communication fields such as satellite communication and navigation systems due to their strong robustness to polarization rotation and path perturbation. Traditional polarization control structures often only support linear polarization or unidirectional circular polarization, with relatively single functions, making it difficult to achieve differential responses to left-handed and right-handed circularly polarized waves, and even more difficult to efficiently integrate with the transmit-reflect integrated structure. The independently adjustable dual-circular polarization transmit-reflect integrated array of the all-metal structure can separate the transmission and reflection functions of left-handed and right-handed circularly polarized waves at the structural level, and this characteristic gives it great advantages in polarization control, signal stability, and anti-interference ability.

[0007] The independent adjustable dual - circular - polarization transmit - receive integrated array with an all - metal structure not only has low loss, high stability, and processing feasibility, but also can effectively solve the problems of single function, high loss, and inflexible polarization existing in traditional transmit - receive integrated arrays. It can not only optimize the space utilization rate, but also improve the functional integration degree of the system, providing a more efficient, stable, and flexible solution for future satellite communication, radar systems, and other electromagnetic wave application fields. Summary of the Invention

[0008] The purpose of the present invention is to provide a metal dual - circular - polarization transmit - receive integrated array antenna with a simple structure that can radiate two - way separately controllable dual - circular - polarization beams simultaneously in view of the problems existing in the above - mentioned prior art.

[0009] The technical solution to achieve the purpose of the present invention is: an all - metal independent adjustable dual - circular - polarization transmit - receive integrated array antenna, the antenna includes a linearly - polarized feed horn and a transmit - receive integrated array, and the linearly - polarized feed horn is located directly above the transmit - receive integrated array;

[0010] The transmit - receive integrated array includes a number of transmit - receive integrated units, and each transmit - receive integrated unit includes a single - layer metal plate with a "dumbbell - shaped" slot hollowed out; the "dumbbell - shaped" slot includes a rectangular slot, a pair of arc - shaped slots, and a pair of fan - shaped slots. The rectangular slot is located at the center of the single - layer metal plate and is arranged along the central axis direction of the single - layer metal plate; along the central axis direction of the single - layer metal plate, an arc - shaped slot is respectively arranged at the central positions at both ends of the rectangular slot, and the two arc - shaped slots are symmetrically arranged with respect to the rectangular slot. A pair of fan - shaped slots are symmetrically arranged at the central position of the rectangular slot, and the two fan - shaped slots are respectively located inside the two arc - shaped slots; the arc - shaped slots and the fan - shaped slots share the same center of the circle, and the center of the rectangular slot is used as the center of the circle. Let the radius of the fan - shaped slot be R1, the inner diameter of the arc - shaped slot be R2, the outer diameter be R3, and the length of the rectangular slot be L. The parameter relationship between the slots is: , .

[0011] Further, the width H of the rectangular slot is less than the radius R1 of the fan - shaped slot.

[0012] Further, the "dumbbell - shaped" slot can rotate around the center, and the rotation angle β is adjustable, which is used to realize the switching of the transmit - receive working mode of the transmit - receive integrated unit, that is, to realize the conversion from linear polarization to dual - circular polarization, and generate two - way independently adjustable dual - circular polarization for transmission and reflection.

[0013] Further, the adjustment range of the rotation angle β is - 180° - 180°.

[0014] Further, the central axes of the arc-shaped slit and the fan-shaped slit are coaxial, and the opening angles α of both are the same.

[0015] Further, the opening angle α is adjustable to achieve the phase change of the transmissive and reflective integrated unit.

[0016] Further, the adjustment range of the opening angle α is 68° - 155°.

[0017] Further, the width w1 of the arc-shaped slit and the width H of the rectangular slit are both adjustable to achieve the amplitude and phase changes of the transmissive and reflective integrated unit.

[0018] Further, the plurality of transmissive and reflective integrated units are evenly distributed to form a square array.

[0019] Further, the spacing P between adjacent transmissive and reflective integrated units is 0.47λ, where λ is the free space wavelength corresponding to the design frequency.

[0020] Compared with the prior art, the significant advantages of the present invention are as follows:

[0021] 1) Compared with the transmissive and reflective integrated array antenna based on a dielectric substrate, the present invention has a simple structure, low cost, simple manufacturing, stable performance, and reduced loss.

[0022] 2) The all-metal transmissive and reflective integrated unit structure proposed by the present invention can achieve a 360° phase range for each of left-handed and right-handed circular polarizations and independent phase control by changing the opening angle α of the fan-shaped slot and the circular ring slot and combining with the rotation angle β of the double dumbbell slit.

[0023] 3) The novel all-metal dual circular polarization transmissive and reflective integrated array antenna proposed by the present invention can achieve bidirectional simultaneous radiation and independent control of dual circular polarization, has high gain, aperture efficiency, and bandwidth, and has more complex functions and significantly optimized performance compared with other similar transmissive and reflective integrated array antennas.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of an all-metal independently adjustable dual circular polarization transmissive and reflective integrated array antenna in an embodiment, where Figure 1 (a) in it is the structure diagram of the all-metal independently adjustable dual circular polarization transmissive and reflective integrated array antenna, Figure 1 and (b) in it is the enlarged schematic diagram of the array.

[0026] Figure 2 It is a three-dimensional schematic diagram of the transmissive and reflective integrated unit of the all-metal independently adjustable dual circular polarization transmissive and reflective integrated array antenna in an embodiment.

[0027] Figure 3 It is a top view of the transmissive and reflective unit of a fully metallic independently tunable dual - circular - polarization transmissive and reflective integrated array antenna in an embodiment.

[0028] Figure 4 They are two states of the transmissive and reflective unit of a fully metallic independently tunable dual - circular - polarization transmissive and reflective integrated array antenna in an embodiment, where Figure 4 (a) in it is the original state of the transmissive and reflective unit, Figure 4 (b) in it is the state after mirroring.

[0029] Figure 5 It is a graph of the reflection (transmission) amplitude and phase of the transmissive and reflective unit of a fully metallic independently tunable dual - circular - polarization transmissive and reflective integrated array antenna when changing the opening angles α of the sector - shaped slot and the circular - ring slot under the incidence of electromagnetic waves in the vertical direction.

[0030] Figure 6 It is a graph of the reflection (transmission) amplitude and phase of the transmissive and reflective unit of a fully metallic independently tunable dual - circular - polarization transmissive and reflective integrated array antenna when changing the rotation angle β under the incidence of electromagnetic waves in the vertical direction, where Figure 6 (a) in it is the reflection (transmission) amplitude graph, Figure 6 (b) in it is the reflection (transmission) phase graph.

[0031] Figure 7 It is a graph of the reflection (transmission) amplitude and phase of the transmissive and reflective unit of a fully metallic independently tunable dual - circular - polarization transmissive and reflective integrated array antenna at different frequencies.

[0032] Figure 8 It is the reflection simulation measurement pattern of a fully metallic independently tunable dual - circular - polarization transmissive and reflective integrated array antenna at 10 GHz in an embodiment, where Figure 8 (a) in it is the E - plane, Figure 8 (b) in it is the left - hand circular - polarization H - plane, Figure 8 (c) in it is the right - hand circular - polarization H - plane.

[0033] Figure 9 It is the transmission simulation measurement pattern of a fully metallic independently tunable dual - circular - polarization transmissive and reflective integrated array antenna at 10 GHz in an embodiment, where Figure 9 (a) in it is the E - plane, Figure 9 (b) in it is the left - hand circular - polarization H - plane, Figure 9 (c) in it is the right - hand circular - polarization H - plane.

[0034] Figure 10 It is a graph of the measured gain and aperture efficiency of a fully metallic independently tunable dual - circular - polarization transmissive and reflective integrated array antenna at different frequency directions in an embodiment, where Figure 10 (a) in it is the reflection result,Figure 10 In (b) is the transmission result.

[0035] Figure 11 Is the circular polarization axial ratio diagram of a fully metal independent adjustable dual circular polarization transmit - reflect integrated array antenna in different frequency directions in an embodiment, where Figure 11 In (a) is the reflection result, Figure 11 In (b) is the transmission result. Specific embodiments

[0036] In order to make the objectives, technical solutions and advantages of this application clearer, the following further elaborates on this application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0038] In one embodiment, in combination with Figures 1 to 4 , a fully metal independent adjustable dual circular polarization transmit - reflect integrated array antenna is provided. The antenna includes a linearly polarized feed horn 1 and a transmit - reflect integrated array 2. The linearly polarized feed horn 1 is located directly above the transmit - reflect integrated array 2;

[0039] The transmit - reflect integrated array 2 includes a number of transmit - reflect integrated units 3. Each transmit - reflect integrated unit 3 includes a single - layer metal plate 4 with a "dumbbell - shaped" slot hollowed out on it. The "dumbbell - shaped" slot includes a rectangular slot, a pair of arc slots and a pair of sector slots. The rectangular slot is located at the center of the single - layer metal plate 4 and is arranged along the central axis direction of the single - layer metal plate 4. Along the central axis direction of the single - layer metal plate 4, an arc slot is respectively arranged at the central positions at both ends of the rectangular slot, and the two arc slots are symmetrically arranged with respect to the rectangular slot. A pair of sector slots are symmetrically arranged at the central position of the rectangular slot, and the two sector slots are respectively located inside the two arc slots. The arc slots and the sector slots share the same center, and the center of the rectangular slot is used as the center. Let the radius of the sector slot be R1, the inner diameter of the arc slot be R2, the outer diameter be R3, and the length of the rectangular slot be L. The parameter relationship between the slots is: , .

[0040] Furthermore, in one of the embodiments, the width H of the rectangular slot is less than the radius R1 of the sector slot.

[0041] Furthermore, in one of the embodiments, the "dumbbell-shaped" slit can rotate around the center, and the rotation angle β is adjustable, which is used to realize the switching of the transmissive-reflective working mode of the transmissive-reflective integrated unit 3, that is, to realize the conversion from linear polarization to dual circular polarization, and generate dual circular polarization with independently adjustable transmission and reflection in both directions.

[0042] Preferably, in some embodiments, the adjustment range of the rotation angle β is -180° - 180°.

[0043] Furthermore, in one of the embodiments, the central axes of the arc-shaped slit and the fan-shaped slit are coaxial, and the opening angles α of the two are the same.

[0044] Here, the opening angle α is adjustable, which is used to realize the 360° phase change of the transmissive-reflective integrated unit 3.

[0045] Preferably, in some embodiments, the adjustment range of the opening angle α is 68° - 155°.

[0046] Furthermore, in one of the embodiments, the width w1 of the arc-shaped slit and the width H of the rectangular slit are both adjustable to realize the amplitude and phase changes of the transmissive-reflective integrated unit 3.

[0047] Preferably, in some embodiments, the plurality of transmissive-reflective integrated units 3 are evenly distributed to form an n×n square array.

[0048] Furthermore, in one of the embodiments, the spacing P between adjacent transmissive-reflective integrated units 3 is 0.47λ, where λ is the free space wavelength corresponding to the design frequency.

[0049] Next, the effects of the parameters of the transmissive-reflective integrated unit, the incident angle, and the frequency on the reflection (transmission) amplitude and phase of the unit are described.

[0050] Combined with Figure 5 , by changing the opening angle α between the fan-shaped slot and the circular ring slot, the reflection (transmission) amplitude is always close to -6 dB. Combining the 180° phase coverage of the initial state and the mirror state respectively, a 360° phase range can be obtained.

[0051] Combined with Figure 6 , the reflection (transmission) amplitude of the transmissive-reflective integrated unit changes little at different rotation angles, and the phase curves are basically parallel and the ranges are close, which proves the feasibility of using rotation to separate dual circular polarization.

[0052] Combined with Figure 7 , the reflection (transmission) amplitude of the transmissive-reflective integrated unit changes stably at different frequencies, and the phase curves are basically parallel and the ranges are close, which proves that this unit has broadband performance.

[0053] As a specific example, in one of the embodiments, the present invention is further verified and described.

[0054] The novel all-metal independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna proposed in this embodiment includes a linearly polarized feed horn 1 and a transmissive and reflective integrated array 2. The linearly polarized feed horn 1 is located directly above the transmissive and reflective integrated array 2. The specific position is that the linearly polarized feed horn 1 is located at a vertical height of 265 mm from the center of the transmissive and reflective integrated array 2. In this embodiment, the transmissive and reflective integrated array 2 has a square aperture with a size of 350 mm × 350 mm and includes 625 all-metal transmissive and reflective integrated units 3. Each transmissive and reflective integrated unit 3 includes a single-layer metal plate 4, and the thickness T of the single-layer metal plate is 0.4 mm. The size of the transmissive and reflective integrated unit 3 is 14 mm × 14 mm. H = 3 mm, R1 = 4.8 mm, R2 = 5.6 mm, w1 = 1 mm, and R3 = 6.6 mm are selected.

[0055] Combined with Figure 8 , at the reflection end of the all-metal independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna, the test results show that the left-handed circular polarization and the right-handed circular polarization point to 30° and -40° respectively, each pointing to the pre-designed direction. At the same time, the sidelobe of the left-handed H-plane is -16.3 dB, and the cross polarization is -16.8 dB. The sidelobe of the right-handed H-plane is -20.5 dB, and the cross polarization is -16.3 dB.

[0056] Combined with Figure 9 , at the transmission end of the all-metal independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna, the test results show that the left-handed circular polarization and the right-handed circular polarization point to 40° and -30° respectively, which is in line with the preset. At the same time, the sidelobe of the left-handed H-plane is -17.1 dB, and the cross polarization is -14.2 dB. The sidelobe of the right-handed H-plane is -16.5 dB, and the cross polarization is -17.2 dB.

[0057] Combined with Figure 10 , it is measured from the all-metal transmissive and reflective integrated array antenna that the left-handed circular polarization gain of reflection at 10 GHz is 19.8 dBic and the 3-dB gain bandwidth is 13%; the right-handed circular polarization gain is 19 dBic and the 3-dB gain bandwidth is 15%, and the maximum aperture efficiency of reflection is 12.7%. At the same time, the left-handed circular polarization gain of transmission is 19 dBic and the 3-dB gain bandwidth is 12%; the right-handed circular polarization gain is 20.3 dBic and the 3-dB gain bandwidth is 14%, and the maximum aperture efficiency of transmission is 13.4%.

[0058] Combined with Figure 11, obtained from the measurement of the all-metal transmissive and reflective integrated array antenna, the 3-dB axial ratio bandwidths of the reflected left- and right-handed circular polarizations are 20% (9.7 - 11.7 GHz) and 23% (9.7 - 12 GHz), and the 3-dB axial ratio bandwidths of the transmitted left- and right-handed circular polarizations are 20% (8.6 - 10.6 GHz) and 23% (9.2 - 11.5 GHz).

[0059] In summary, the all-metal transmissive and reflective integrated unit structure proposed by the present invention realizes phase coverage by changing the opening angle α of the fan-shaped slot and the circular ring slot, and realizes independent control of the left- and right-handed beams by changing the slot rotation angle β. Based on this all-metal transmissive and reflective integrated unit structure, the designed all-metal independently adjustable dual circular polarization transmissive and reflective integrated array antenna can achieve simultaneously independently controllable dual circular polarization beams for transmission and reflection by using a linearly polarized horn feed, and obtains high gain and high axial ratio bandwidth, and its performance is superior to other transmissive and reflective integrated array antennas.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fully metal independent adjustable dual circular polarization transmissive and reflective integrated array antenna, characterized in that, The antenna includes a linearly polarized feed horn (1) and a transmit-receive integrated array (2), and the linearly polarized feed horn (1) is located directly above the transmit-receive integrated array (2); The transflective integrated array (2) includes a plurality of transflective integrated units (3), and each transflective integrated unit (3) includes a single-layer metal plate (4) with a "dumbbell-shaped" slit hollowed out thereon; the "dumbbell-shaped" slit includes a rectangular slit, a pair of arc-shaped slits, and a pair of fan-shaped slits. The rectangular slit is located at the center of the single-layer metal plate (4) and is arranged along the central axis direction of the single-layer metal plate (4); along the central axis direction of the single-layer metal plate (4), one of the arc-shaped slits is arranged at the central position at each end of the rectangular slit, and the two arc-shaped slits are symmetrically arranged with respect to the rectangular slit. A pair of fan-shaped slits are symmetrically arranged at the central position of the rectangular slit, and the two fan-shaped slits are respectively located inside the two arc-shaped slits; the arc-shaped slits and the fan-shaped slits share the same center of the circle, and the center of the rectangular slit is used as the center of the circle; let the radius of the fan-shaped slit be R1, the inner diameter of the arc-shaped slit be R2, the outer diameter be R3, and the length of the rectangular slit be L. The parameter relationship between the slits is as follows: , .

2. The all-metal independently adjustable dual-circular polarization transmissive and reflective integrated array antenna according to claim 1, wherein The width H of the rectangular slit is less than the radius R1 of the sector slit.

3. The all-metal independently adjustable dual-circular polarization transmissive and reflective integrated array antenna according to claim 1, wherein The "dumbbell-shaped" slit can rotate around the center, and the rotation angle β is adjustable, which is used to realize the working mode switching of the transmit-receive integrated unit (3), that is, to realize the conversion from linear polarization to dual circular polarization, and generate dual circular polarization with independently adjustable transmission and reflection in both directions.

4. The all-metal independently adjustable dual-circular polarization transmissive and reflective integrated array antenna according to claim 3, wherein The adjustment range of the rotation angle β is -180° - 180°.

5. The all-metal independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna according to claim 1, wherein The central axes of the arc-shaped slit and the sector slit are coaxial, and the opening angles α of the two are the same.

6. The all-metal independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna according to claim 5, wherein The opening angle α is adjustable, which is used to realize the phase change of the transmit-receive integrated unit (3).

7. The all-metal independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna according to claim 6, wherein The adjustment range of the opening angle α is 68° - 155°.

8. The all-metal independently adjustable dual-circular polarization transmissive and reflective integrated array antenna according to claim 2, wherein The widths w1 of the arc-shaped slit and H of the rectangular slit are both adjustable to realize the amplitude and phase changes of the transmit-receive integrated unit (3).

9. The all-metal independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna according to claim 1, wherein The plurality of transmit-receive integrated units (3) are evenly distributed to form a square array.

10. The all-metal independently adjustable dual-circularly polarized transmissive and reflective integrated array antenna according to claim 1, wherein The spacing P between adjacent transmit-receive integrated units (3) is 0.47λ, where λ is the free space wavelength corresponding to the design frequency.

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