A circularly polarized solar antenna unit and a solar antenna array

Abstract

The present invention discloses a circular polarization solar antenna unit and a solar antenna array. The circular polarization solar antenna unit comprises: a battery layer, a first dielectric layer and a second dielectric layer arranged in sequence from top to bottom; wherein a main grid line is arranged on the upper surface of the battery layer, and the main grid line is connected to the battery layer; and further comprises a radio frequency coaxial connector and an artificial magnetic conductor layer; and one end of the radio frequency coaxial connector passes through the artificial magnetic conductor layer, and the other end passes through the second dielectric layer, and a metal probe of the radio frequency coaxial connector is connected to a surface metal pattern on the second dielectric layer, and the radio frequency coaxial connector is located at the geometric center of the first dielectric layer, the second dielectric layer and the artificial magnetic conductor layer, and the first dielectric layer and the second dielectric layer are used as the upper part of the antenna, and the artificial magnetic conductor layer is used as the lower part of the antenna, and there is an air gap between the upper part of the antenna and the lower part of the antenna. The present invention realizes a high coverage rate of solar cells and has the dual functions of solar cell power generation and antenna electromagnetic transceiver.

Description

Technical Field

[0001] The invention relates to the field of antenna technology and solar cell integration technology, in particular to a circular polarization solar antenna unit and a solar antenna array. Background Art

[0002] With the rapid development of communication technology, satellite communication technology has also made great progress. When circularly polarized antennas are used as receiving antennas or transmitting antennas, they are compatible with linearly polarized antennas of any polarization direction, greatly reducing polarization mismatch. Circularly polarized waves will undergo polarization reversal after being reflected. This feature enables circularly polarized antennas to reduce multipath interference and improve signal quality. Therefore, circularly polarized antennas are widely used in many fields such as satellite communications, navigation positioning, and military.

[0003] In recent years, various new energy sources have developed rapidly, and photovoltaic solar energy is one of the important representatives. Solar cells have become the first choice for outdoor self-powered systems due to their significant advantages such as cleanliness, durability, flexibility and low maintenance costs. Therefore, the integration of solar cells and antennas has also been studied at home and abroad.

[0004] At present, the methods of integrating solar cells and antennas are mainly divided into two categories. The first category is slot solar antennas, which have two integration methods: Figure 1 As shown in Figure 1, a slit is directly etched on the solar cell as an antenna, and the electrode on the back of the cell itself can be regarded as the ground plane of the antenna. Figure 2 As shown in the figure, the slot antenna is used as a separate radiation structure, and the solar cells are laid around the slot. Although the slot solar antenna can be fully integrated and will not affect the photoelectric conversion efficiency, the processing engineering is complex and the yield is low. After the solar cell array is formed, the internal connection also needs to be designed. The second type is that the solar cell is used as an antenna reflector or radiation patch. Figure 3 As shown in the figure, the solar panel acts as an antenna reflector, which can effectively improve the coverage of the solar cell. However, the antenna above will still partially block the solar panel. Figure 4 As shown in the figure, the solar cell is used as the radiator of the patch antenna, and the solar cell receives 100% of the light. However, due to the loss characteristics of the solar cell, the solar cell used as a radiation patch will reduce the gain and increase the transmission loss. Reasonable solar cell layout and connection method can reduce the impact on the antenna. In summary, it can be seen that the integrated design of solar cells and antennas needs to ensure the radiation performance of the antenna and the power generation efficiency of the solar cell.

[0005] In the prior art, there is an invention patent with the publication number CN116454595A, which discloses a solar antenna unit and array. The solar antenna unit includes a solar antenna layer, a supporting foam layer and an artificial magnetic conductor AMC layer arranged in sequence. The solar antenna layer passes through the supporting foam layer and the artificial magnetic conductor AMC layer through a coaxial RF connector and is connected to the metal floor of the artificial magnetic conductor AMC layer. The solar cells of the prior art can achieve 100% illumination, and the antenna improves the standing waves during large-angle scanning by loading AMC, so that the antenna array has wide-band and large-angle phased scanning capabilities. However, the coverage rate of solar cells in the prior art is not high enough, and this problem can be solved by integrating the slot antenna with the solar cell. It is only necessary to pay attention to the connection between the solar cells to avoid affecting the slot radiation as much as possible. And the comparison document loading AMC improves the standing waves. Summary of the invention

[0006] The technical problem to be solved by the present invention is to solve the problem of the influence of solar cell loading on antenna gain performance and the problem of antenna affecting solar cell coverage and lighting.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A circularly polarized solar antenna unit comprises: a battery layer 10, a first dielectric layer 20 and a second dielectric layer 30 arranged in sequence from top to bottom; wherein a main grid line 11 is arranged on the upper surface of the battery layer 10, and the main grid line 11 is connected to the battery layer 10; and also comprises a radio frequency coaxial connector 40 and an artificial magnetic conductor layer 50; and one end of the radio frequency coaxial connector 40 passes through the artificial magnetic conductor layer 50, and the other end passes through the second dielectric layer 30, and the metal probe of the radio frequency coaxial connector 40 is connected to the metal pattern on the upper surface of the second dielectric layer 30, and the radio frequency coaxial connector 40 is located at the geometric center of the first dielectric layer 20, the second dielectric layer 30 and the artificial magnetic conductor layer 50, and the first dielectric layer 20 and the second dielectric layer 30 are used as the upper part of the antenna, and the artificial magnetic conductor layer 50 is used as the lower part of the antenna, and there is an air gap between the upper part of the antenna and the lower part of the antenna.

[0009] In one embodiment of the present invention, the artificial magnetic conductor layer 50 includes a metal floor 51, a third dielectric plate layer 52 and a periodic metal pattern 530 arranged in sequence from bottom to top; at the geometric center of the third dielectric plate layer 52 and the periodic metal pattern 530, a second through hole 540 for installing the RF coaxial connector 40 is provided.

[0010] In one embodiment of the present invention, radiation slots 201 are provided on the upper surface of the first dielectric layer 20 ; four radiation slots 201 form an open square ring, and the upper surface of the first dielectric layer 20 except the radiation slots 201 is coated with a metal layer 21 .

[0011] In one embodiment of the present invention, an isolation layer 22 is disposed on the upper surface of the first dielectric layer 20 , and the isolation layer 22 has the same radiation slots at positions corresponding to the radiation slots 201 .

[0012] In one embodiment of the present invention, a microstrip power divider 31 is disposed on the upper surface of the second dielectric layer 30 ; a main port of the microstrip power divider 31 is located at the geometric center of the second dielectric layer 30 .

[0013] In one embodiment of the present invention, a metal ground 32 is disposed on the lower surface of the second dielectric layer 30 and at the geometric center of the second dielectric layer 30 .

[0014] In one embodiment of the present invention, a plurality of metallized vias 33 are distributed on the metal ground 32 ; and the plurality of metallized vias 33 penetrate the second dielectric layer 30 and the first dielectric layer 20 ; a first through hole 35 is arranged among the plurality of metallized vias 33 , and the first through hole 35 penetrates the second dielectric layer 30 and the first dielectric layer 20 .

[0015] In one embodiment of the present invention, one end of the RF coaxial connector 40 passes through the second through hole 540 and is vertically installed on the metal floor 51, and the metal probe on the other end passes through the first through hole 35, the metal probe is connected to the metal layer 21 on the first dielectric layer 20, and the outer conductor of the RF coaxial connector 40 is connected to the metal ground 32; and the metal probe is welded to the main port of the microstrip power divider 31.

[0016] In one embodiment of the present invention, the battery layer 10 includes a first battery layer block 11 and a second battery layer block 12; the second battery layer block 12 is located inside the first battery layer block 11, forming a "U" structure.

[0017] The present invention also provides a solar antenna array, including the circularly polarized solar antenna unit described above; the antenna upper parts and the antenna lower parts in multiple circularly polarized solar antenna units are respectively integrated to form an integrated antenna unit; the positive poles and negative poles of the solar cells in the battery layer 10 in the multiple circularly polarized solar antenna units are respectively connected in series or in parallel, so that the circularly polarized solar cell antenna unit is expanded into a solar antenna array.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) In the present invention, the solar cell is located at the top, which can achieve 100% illumination.

[0020] (2) The antenna uses four "L"-shaped radiation slots to form a circularly polarized antenna. The "L"-shaped radiation slots occupy a small area, which can ensure a small unit spacing of the antenna and achieve large-angle phased scanning. The "L"-shaped radiation slots occupy a small area, which can increase the coverage area of ​​the solar cell, which is beneficial to increasing the power generation of the solar cell.

[0021] (3) The antenna is loaded with an artificial magnetic conductor layer to reduce the antenna height, increase the forward gain, and improve the antenna beam width. The 3dB axial ratio beam width is greatly increased, while the overall height of the antenna is reduced.

[0022] (4) The solar antenna array adopts a clockwise or counterclockwise rotation array mode, which further improves the circular polarization purity and reduces the gain attenuation during large-angle scanning.

[0023] (5) The circularly polarized solar cell antenna can generate electricity from the solar cell and can be used by the antenna. Since the antenna has the ability to perform circular polarization scanning at a large angle, the antenna is suitable for a self-powered wireless communication system.

[0024] (6) This integrated antenna with integrated solar cells can generate electricity for the antenna, is suitable for ISM band transmitting and receiving terminal equipment, and has high scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1-4 It is a schematic diagram of a solar antenna unit in the prior art.

[0026] Figure 5 The figure is a schematic diagram of a circularly polarized solar antenna unit according to an embodiment of the present invention.

[0027] Figure 6 Schematic diagram of the first dielectric layer according to an embodiment of the present invention.

[0028] Figure 7 Schematic diagram of the second dielectric layer according to an embodiment of the present invention.

[0029] Figure 8 It is a partial enlarged view of the metal ground according to an embodiment of the present invention.

[0030] Fig. 9 Schematic diagram of a periodic metal pattern according to an embodiment of the present invention.

[0031] Fig.10 Schematic diagram of a radio frequency coaxial connector according to an embodiment of the present invention.

[0032] Fig.11 This is a two-dimensional periodic boundary XZ plane scanning active standing wave curve of the circularly polarized solar antenna unit according to an embodiment of the present invention.

[0033] Fig.12 This is a two-dimensional periodic edge YZ surface scanning active standing wave curve of the circularly polarized solar antenna unit according to an embodiment of the present invention.

[0034] Fig.13 The figure is a schematic diagram of a solar antenna array according to an embodiment of the present invention.

[0035] Fig.14This is an integrated second dielectric layer of an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described in conjunction with the accompanying drawings of the specification.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Example 1

[0039] See also Figure 5 As shown, the present invention provides a circularly polarized solar antenna unit, comprising a battery layer 10, a first dielectric layer 20 and a second dielectric layer 30 arranged in sequence from top to bottom; wherein a main grid line 11 is arranged on the upper surface of the battery layer 10, and the main grid line 11 is connected to the battery layer 10; and further comprising a radio frequency coaxial connector 40 and an artificial magnetic conductor layer 50; and one end of the radio frequency coaxial connector 40 passes through the artificial magnetic conductor layer 50, and the other end passes through the second dielectric layer 30, and a metal probe of the radio frequency coaxial connector 40 is connected to a surface metal pattern on the second dielectric layer 30, and the radio frequency coaxial connector 40 is located at the geometric center of the first dielectric layer 20, the second dielectric layer 30 and the artificial magnetic conductor layer 50, and the first dielectric layer 20 and the second dielectric layer 30 are used as the upper part of the antenna, and the artificial magnetic conductor layer 50 is used as the lower part of the antenna, and there is an air gap between the upper part of the antenna and the lower part of the antenna.

[0040] See also Figures 5 to 7 As shown, in one embodiment of the present invention, the battery layer 10 includes a first battery layer block 11 and a second battery layer block 12. The second battery layer block 12 is located inside the first battery layer block 11, forming a "U" structure and a closed square ring 121 formed between the two battery layer blocks.

[0041] In this embodiment, the first battery layer block 11 and the second battery layer block 12 are connected via a wire or an inductor, and can be connected in series or in parallel. Specifically, the first battery layer block 11 and the second battery layer block 12 are connected in series via an inductor, and the first battery layer block 11 and the second battery layer block 12 are connected in parallel via a wire.

[0042] See also Figure 6As shown, in one embodiment of the present invention, a radiation slot 201 is provided on the upper surface of the first dielectric layer 20. The four radiation slots 201 form an open square ring, and the two opposite sides of the square ring form a symmetrical first gap 202. The radiation slots 201 are in an "L" shape. In this embodiment, if the four radiation slots 201 are completely closed, the battery layer 10 can only be connected by a jumper, which will inevitably affect the radiation of the radiation slots 201.

[0043] In this embodiment, on the upper surface of the first dielectric layer 20, except for the radiation gap 210, the metal layer 21 and the isolation layer 22 are sequentially covered from bottom to top, and a second gap 220 is correspondingly formed on the isolation layer 22, that is, the first gap 202 and the second gap 220 are aligned in the Z-axis direction. Among them, the main gate line 11 is placed on the battery layer 10 at the corresponding position of the second gap 220, so that the main gate line 11 and the battery layer 10 are easily connected, and the wire or inductor used for connection can be placed on the second gap 220. The isolation layer 22 is made of insulating material to prevent the metal substrate on the back of the battery layer 10 from contacting the metal layer 21.

[0044] Specifically, the thickness of the first dielectric layer 20 is the thickness of a conventional FR-4 substrate. The length of the radiation slot 201 affects the working frequency of the antenna. In this embodiment, the length of the radiation slot 201 is 44 mm. The antenna under this length can work at a frequency of 2.4 GHz. The length of the radiation slot 201 also affects the size of the first gap 202. The widths of the first gap 202 and the second gap 220 in the X-axis direction are equal. Influencing the size of the first gap 202 or the size of the second gap 220 further affects the convenience of connecting the main gate line 11 and the battery layer 10.

[0045] The width of the radiation slot 201 controls the amount of energy radiation. In this embodiment, the width of the radiation slot 201 is 2.6 mm. The width of 2.6 mm can make the radiation efficiency of the antenna reach 85% (without considering the loss of the microstrip power divider). If the width of the radiation slot 201 is too narrow, it will make it more difficult to weld the positive and negative electrodes of the battery layer 10 in the Z-axis direction.

[0046] See also Figures 5 to 8 As shown, in this embodiment, a microstrip power divider 31 is disposed on the upper surface of the second dielectric layer 30 , and a metal ground 32 is disposed on the lower surface.

[0047] In this embodiment, the main port of the microstrip power divider 31 is located at the geometric center of the second dielectric layer 30. The microstrip power divider 31 is composed of four sub-power dividers, each of which outputs a radio frequency signal with equal amplitude and phase that differs by 90° in clockwise or counterclockwise order, and a 100-ohm resistor element 34 is welded between the ends of the two impedance matching lines of each sub-power divider to improve isolation. Specifically, the type of the microstrip power divider 31 is a Wilkinson power divider.

[0048] In this embodiment, the metal ground 32 is a ring-shaped metal pattern. A plurality of metallized vias 33 are distributed on the metal ground 32, and the plurality of metallized vias 33 penetrate the second dielectric layer 30 and the first dielectric layer 20. A first through hole 35 is arranged among the plurality of metallized vias 33, and the first through hole 35 penetrates the second dielectric layer 30 and the first dielectric layer 20.

[0049] See Figure See Figure Figures 5 to 10 As shown, in one embodiment of the present invention, the artificial magnetic conductor layer 50 includes a metal floor 51, a third dielectric plate layer 52 and a periodic metal pattern 530 arranged in sequence from bottom to top. The artificial magnetic conductor layer 50 reduces the overall height of the antenna, improves the forward gain, and greatly broadens the 3dB beam width of the circularly polarized solar antenna unit. For a bidirectional radiating antenna, a reflector is generally placed under the antenna, and the electromagnetic waves radiated downward will be reflected back upward. This distance is set to one-quarter wavelength. Under this antenna, the distance represented by one-quarter wavelength is 31.25 mm. After replacing the artificial magnetic conductor layer 50 to achieve the same reflection performance, this distance is 12.9 mm, which reduces the distance from the antenna to the reflector, thereby reducing the overall height of the antenna.

[0050] In this embodiment, a second through hole 540 for mounting the RF coaxial connector 40 is provided at the geometric center of the third dielectric layer 52 and the periodic metal pattern 530. The thickness of the third dielectric layer 52 is 1.6 mm, and the periodic metal pattern 530 is a 3×3 periodic metal pattern. Among them, a plurality of periodic metal patterns 530 are printed on the upper surface of the third dielectric layer 52, each periodic metal pattern 530 is an artificial magnetic conductor unit, and the spacing between adjacent periodic metal patterns 530 is 1 mm. Each periodic metal pattern 530 is a rounded square with a side length of 20 mm and a diameter of 11.5 mm at the four corners. A rectangular gap with a length of 5 mm and a width of 4.5 mm is etched inward on each side, so that the reflection angle compensation of the artificial magnetic conductor unit can reach 80 degrees.

[0051] In this embodiment, one end of the RF coaxial connector 40 passes through the second through hole 540 and is vertically mounted on the metal floor 51. The metal outer wall of the RF coaxial connector 40 passes through the air and the third dielectric plate layer 52. The height of the metal outer wall is 14.5 mm. The metal probe of the RF coaxial connector 40 passes through the second dielectric layer 30 through the first through hole 35 and is extended by 0.3 mm to facilitate welding with the main port of the microstrip power divider 31, and is connected to the metal layer 21 on the first dielectric layer 20, and the outer conductor of the RF coaxial connector 40 is connected to the metal ground 32. The metallized via 33 passes through the first dielectric layer 20 and the second dielectric layer 30, connecting the metal layer 21 and the metal ground 32, so that the metal layer 21, the metal ground 32, and the outer wall of the RF coaxial connector 40 can share the same ground. After sharing the same ground, the metal probe of the RF coaxial connector 40 will transfer energy to the microstrip power divider 31.

[0052] In one embodiment of the present invention, Fig.11 The two-dimensional periodic boundary XZ surface scanning active standing wave curve of the circularly polarized solar antenna unit, Fig.12 The active standing wave curve of the two-dimensional periodic edge YZ surface scanning of the circularly polarized solar antenna unit shows that the active standing wave of scanning 60 degrees is less than 3 in the 2.2-2.7GHz frequency band. The size of the scanning angle is determined by the performance of the antenna. When the active standing wave is less than 3 at 60 degrees, it means that the loss of the antenna is still relatively small at this angle, and communication transmission is still possible.

[0053] Example 2

[0054] See also Fig.13 and Fig.14 As shown, the present invention also provides a solar antenna array, including the circularly polarized solar antenna unit in Example 1. The antenna upper parts and the antenna lower parts in the plurality of circularly polarized solar antenna units are respectively integrated to form an integrated antenna unit; the positive poles and negative poles of the solar cells in the cell layer 10 in the plurality of circularly polarized solar antenna units are respectively connected in series or in parallel, and the circularly polarized solar cell antenna unit is expanded into a solar antenna array.

[0055] In this embodiment, a plurality of microstrip power dividers are integrated on the integrated second dielectric layer. Undoubtedly, a corresponding number of four radiation slots 201 are also provided at corresponding positions on the integrated first dielectric layer to form an open square ring, as well as a corresponding plurality of RF coaxial connectors 40. The integrated setting is only for the convenience of processing, and does not change the position, connection relationship and working principle of the various components in the circular polarization solar antenna unit.

[0056] The cell layers 10 in the multiple circularly polarized solar antenna units are arranged in a 2×2 array on the integrated antenna unit and connected to the integrated antenna units at the corresponding positions to form a solar antenna subarray. Specifically, the four cell layers 10 are arranged 90° clockwise or counterclockwise. At the same time, the circularly polarized solar antenna units in the solar antenna subarray are assigned initial phases of 0°, 90°, 180°, and 270° counterclockwise.

[0057] A plurality of solar antenna sub-arrays are connected through the main grid line 11 to form a solar antenna array, such as Fig.13 As shown, a plurality of main grid lines 11 in the solar antenna array are connected in sequence in the X-axis direction, connecting the circularly polarized solar antenna units in series.

[0058] More specifically, in the direction parallel to the Y-axis, it is located between two adjacent battery layers and suspended above the battery layer 10, preferably with a small suspension interval and without blocking the battery layer 10, and a bus bar (not shown in the figure) is provided, and the bus bar is connected to the main grid line 11 in each column (Y-axis). The bus bar can be used to supply power to devices that need power.

[0059] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0060] The above-described embodiments merely represent implementation methods of the invention. The protection scope of the present invention is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements may be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A circular polarization solar antenna unit, characterized in that: include: A battery layer (10), a first dielectric layer (20) and a second dielectric layer (30) are sequentially arranged from top to bottom; wherein a main grid line (11) is arranged on the upper surface of the battery layer (10), and the main grid line (11) is connected to the battery layer (10); and further comprising a radio frequency coaxial connector (40) and an artificial magnetic conductor layer (50); wherein one end of the radio frequency coaxial connector (40) passes through the artificial magnetic conductor layer (50), and the other end passes through the second dielectric layer (30); a metal probe of the radio frequency coaxial connector (40) is connected to a metal pattern on the upper surface of the second dielectric layer (30); and the radio frequency coaxial connector (40) is located at the geometric center of the first dielectric layer (20), the second dielectric layer (30) and the artificial magnetic conductor layer (50); and wherein the first dielectric layer (20) and the second dielectric layer (30) are used as the upper part of the antenna, and the artificial magnetic conductor layer (50) is used as the lower part of the antenna, and an air gap is formed between the upper part of the antenna and the lower part of the antenna; The upper surface of the first dielectric layer (20) is provided with radiation slots (201); the four radiation slots (201) form an open square ring, and the upper surface of the first dielectric layer (20) except for the radiation slot (201) region is coated with a metal layer (21).

2. The circular polarization solar antenna unit according to claim 1, characterized in that: The artificial magnetic conductor layer (50) comprises a metal floor (51), a third dielectric plate layer (52) and a periodic metal pattern (530) which are arranged in sequence from bottom to top; a second through hole (540) for installing a radio frequency coaxial connector (40) is arranged at the geometric center of the third dielectric plate layer (52) and the periodic metal pattern (530).

3. The circular polarization solar antenna unit according to claim 2, characterized in that: An isolation layer (22) is provided on the upper surface of the first dielectric layer (20), and the isolation layer (22) has the same radiation slots at positions corresponding to the radiation slots (201).

4. The circular polarization solar antenna unit according to claim 2, characterized in that: A microstrip power divider (31) is arranged on the upper surface of the second dielectric layer (30); the main port of the microstrip power divider (31) is located at the geometric center of the second dielectric layer (30).

5. The circular polarization solar antenna unit according to claim 4, characterized in that: A metal ground (32) is provided at the geometric center of the lower surface of the second dielectric layer (30).

6. The circular polarization solar antenna unit according to claim 5, characterized in that: A plurality of metallized vias (33) are distributed on the metal ground (32); the plurality of metallized vias (33) penetrate the second dielectric layer (30) and the first dielectric layer (20); a first through hole (35) is arranged in the middle of the plurality of metallized vias (33); the first through hole (35) penetrates the second dielectric layer (30) and the first dielectric layer (20).

7. The circular polarization solar antenna unit according to claim 6, characterized in that: One end of the radio frequency coaxial connector (40) passes through the second through hole (540) and is vertically mounted on the metal floor (51); a metal probe on the other end passes through the first through hole (35); the metal probe is connected to the metal layer (21) on the first dielectric layer (20); and the outer conductor of the radio frequency coaxial connector (40) is connected to the metal ground (32); and the metal probe is welded to the main port of the microstrip power divider (31).

8. A solar antenna array, characterized in that: The invention comprises a circularly polarized solar antenna unit as described in any one of claims 1 to 7; the antenna upper parts and the antenna lower parts in a plurality of circularly polarized solar antenna units are respectively integrated to form an integrated antenna unit; the positive poles and negative poles of the solar cells in the cell layers (10) in the plurality of circularly polarized solar antenna units are respectively connected in series or in parallel to expand the circularly polarized solar cell antenna unit into a solar antenna array.

Images