Antenna array, rectangular antenna array and lens antenna

Abstract

The invention belongs to the technical field of antennas, and provides an antenna array, a rectangular antenna array and a lens antenna, comprising a radiating element, a conductive plate, a support plate, a dielectric substrate and a dielectric substrate. The effect of providing small side lobes while working at high frequency is achieved, the patch-shaped radiating elements are closely arranged on the conductive plate and connected with the well-designed feed network, the frequency performance of the antenna array is improved, and the directivity of the antenna array is optimized; in addition, the patch is arranged on the radiating element, and the working frequency band of the antenna array is expanded, so that the antenna array can maintain low sidelobe performance in a wider frequency range, the antenna array is more suitable for broadband communication, a plurality of wave beams with ideal shapes can be formed, and the coverage range and the efficiency of a communication system are improved. In addition, the structure of the antenna array is kept compact, so that dense deployment is realized in practical application, and the overall performance and applicability of an antenna system are improved.

Description

Technical Field

[0001] The present invention belongs to the field of antenna technology, and in particular relates to an antenna array, a rectangular antenna array and a lens antenna. Background Art

[0002] With the rapid development of modern mobile communications technology, we have entered a new era of high-frequency communications, with applications in the 6 GHz and above frequency bands increasingly becoming the industry standard. This technological advancement has brought with it an urgent demand for high-performance antenna arrays, particularly those capable of stable operation at such high frequencies. Against this backdrop, designing antenna arrays that meet high-frequency requirements while delivering excellent performance has become a major challenge within the industry.

[0003] To achieve efficient signal transmission, the radiating elements of high-frequency antenna arrays need to be arranged at extremely high density to achieve the required gain and directivity within a limited space. However, this dense arrangement of radiating elements often leads to a significant increase in coupling between elements, which in turn causes increased sidelobe levels, compromising communication quality. In traditional designs, the strong coupling between radiating elements makes it extremely difficult to create antenna arrays that can operate at high frequencies while maintaining low sidelobe characteristics.

[0004] Publication No. CN107819198A discloses a feed network for a base station antenna, a base station antenna, and a base station, comprising a dual-polarized radiating element disposed on a conductive plate, and connecting the dual-polarized radiating element to two antenna ports via a strip conductor. As a prior art, a dipole-shaped radiating element is arranged on the upper surface of a dielectric substrate and connected to a strip conductor on the same surface. The dielectric substrate is located on the upper surface of a reflector, which has two rectangular conductive tubes connected together by a wide wall and connected to the bottom surface of the conductive reflector via a narrow wall. The strip conductor connected to the antenna port is installed within the rectangular conductive tube and connected to the strip conductor on the upper surface of the dielectric substrate via the narrow wall and holes in the conductive plate.

[0005] As mentioned above, linear antenna arrays contain compact beamforming networks, resulting in narrow conductive plates. This allows the antenna arrays to be placed close together and suppress far sidelobes. However, the strong coupling between the dipole-shaped radiating elements changes the amplitude of the dipole emission, increasing the first and second sidelobes. Consequently, known antenna arrays cannot provide low sidelobes at high frequencies. Summary of the Invention

[0006] In order to solve the problems in the background technology, the present invention proposes an antenna array, a rectangular antenna array and a lens antenna.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An antenna array, comprising:

[0009] Conductive plate;

[0010] A plurality of radiating elements, an array of which is mounted on the upper surface of the conductive plate;

[0011] a dielectric substrate mounted on the lower surface of the conductive plate;

[0012] The dielectric substrate surface array is provided with a plurality of second feeding networks, and the second feeding networks are connected to the radiating elements in a one-to-one correspondence;

[0013] A symmetrically arranged dielectric substrate is mounted on the lower surface of the conductive plate and is perpendicular to the conductive plate;

[0014] A first feeding network is provided on the surface of each dielectric substrate, and the first feeding network is connected to the second feeding network;

[0015] The support plate is installed between the symmetrical dielectric substrates and contacts the dielectric substrates.

[0016] Preferably, a plurality of notches are provided on the peripheral surface of the radiation element, a plurality of metal strips are connected to the bottom of the notches, and the metal strips pass through the conductive plate and are electrically connected to the second feeding network.

[0017] Preferably, a circular patch is mounted on the upper surface of the radiating element, and the circular patch is used to improve matching or increase the frequency band of the antenna array.

[0018] Preferably, the surface of the dielectric substrate is provided with a plurality of groups of matching holes;

[0019] Each group of matching holes includes at least two strip-shaped holes and at least four second conductive holes;

[0020] The strip-shaped holes are connected to a symmetrical dielectric substrate;

[0021] The second conductive via is connected to the metal strip of the radiation element.

[0022] Preferably, a first conductive film is attached to the surface of each dielectric substrate, and the first conductive film is provided with a first feeding network, and the first feeding network includes:

[0023] Input port;

[0024] a plurality of first strip conductors connected to the input port;

[0025] One end of each of the first strip conductors away from the input port is connected to a plurality of first branches connected in parallel;

[0026] Each of the first branches is provided with a first output end at one end away from the first strip conductor;

[0027] The first output end is inserted into the corresponding strip hole along with the dielectric substrate, and is used for being electrically connected to the second feeding network.

[0028] Preferably, a surface of the dielectric substrate facing the conductive plate is provided with a plurality of protrusions inserted into the strip-shaped holes, and a first conductive film with a first output end is provided on the surface of the protrusions.

[0029] Preferably, in the symmetrical dielectric substrate, solder is provided between the symmetrical protrusions;

[0030] The solder is used to connect the symmetrical first output terminal and the second feeding network on the second conductive film.

[0031] Preferably, a second conductive film is provided on the surface of the dielectric substrate, and the second conductive film is provided with a second feeding network, and the second feeding network includes:

[0032] a second strip conductor, one end of which is connected to the second output terminal, and the other end of which is connected to a plurality of second branches connected in parallel;

[0033] The second output end extends to a strip-shaped hole for being electrically connected to the first output end of the corresponding first feeding network;

[0034] The second branch extends away from one end of the second strip conductor to the corresponding second conductive hole, and is used to be electrically connected to the metal strip in the second conductive hole;

[0035] a third strip conductor, one end of which is connected to the third output terminal, and the other end of which is connected to a plurality of third branches connected in parallel;

[0036] The third output end extends to another strip-shaped hole, and is used to be electrically connected to the first output end of another first feeding network;

[0037] The third branch extends away from one end of the second strip conductor to the corresponding second conductive hole, and is used for being electrically connected to the metal strip in the second conductive hole.

[0038] Preferably, there are two second branches, and the two second branches have a phase difference of 180° after being electrically connected to the corresponding metal strips;

[0039] There are two third branches, and the two third branches have a phase difference of 180° after being electrically connected to the corresponding metal strips.

[0040] A rectangular antenna array, comprising a plurality of the above antenna arrays;

[0041] The plurality of antenna arrays are arranged in parallel;

[0042] The 2n-1th antenna array is provided with six radiating elements, where n is a positive integer greater than or equal to 1;

[0043] The 2n-2th antenna array is provided with five radiating elements.

[0044] A lens antenna comprises a cylindrical lens, wherein a plurality of the above-mentioned antenna arrays are mounted on the surface of the lens;

[0045] The plurality of antenna arrays are arranged in parallel.

[0046] Preferably, the input ports of the second feeding networks of the plurality of antenna arrays are further connected to a multi-way power divider.

[0047] Beneficial effects of the present invention:

[0048] 1. The present invention achieves the effect of operating at high frequencies while providing small side lobes. By closely arranging patch-shaped radiating elements on a conductive plate and connecting them with a carefully designed feed network, it not only improves the frequency performance of the antenna array, but also optimizes its directivity and reduces signal interference.

[0049] 2. The present invention expands the operating frequency band of the antenna array by providing patches on the radiating elements, enabling it to maintain low sidelobe performance over a wider frequency range. This makes the antenna array more suitable for broadband communications and can form multiple beams of ideal shapes, thereby improving the coverage and efficiency of the communication system. Furthermore, the present invention maintains a compact structure of the antenna array, facilitating dense deployment in practical applications and improving the overall performance and applicability of the antenna system.

[0050] 3. The present invention sets up a first feeding network and a second feeding network to form a stable signal transmission path, ensuring that the electrical signal between the first feeding network and the second feeding network can be reliably transmitted, and providing physical support for the electrical connectivity of the internal circuit system of the antenna array.

[0051] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0053] Figure 1 A schematic diagram of the three-dimensional structure of the antenna array of the present invention is shown;

[0054] Figure 2 A schematic side view of the antenna array of the present invention is shown;

[0055] Figure 3 A three-dimensional schematic diagram of a patch-shaped radiating element is shown;

[0056] Figure 4 A three-dimensional schematic diagram showing a patch-shaped radiating element placed above the upper side of a conductive plate;

[0057] Figure 5 shows a schematic structural diagram of a dielectric substrate;

[0058] Figure 6 shows a schematic structural diagram of a dielectric substrate and a first feeding network;

[0059] Figure 7 A schematic structural diagram of a dielectric substrate and a second feeding network is shown;

[0060] Figure 8 A top schematic diagram showing the cooperation of the radiating element and the conductive plate;

[0061] Figure 9 Shows a schematic diagram of the structure in which the patch is installed on top of the radiating element;

[0062] Figure 10 shows a top view of a rectangular antenna array of the present invention;

[0063] Figure 11 shows a bottom view of the rectangular antenna array of the present invention;

[0064] Figure 12 A schematic structural diagram of the lens antenna of the present invention is shown;

[0065] Figure 13 A schematic structural diagram of a lens antenna with a multi-channel power splitter is shown.

[0066] In the figure: 1. Dual-polarized antenna array; 2. Radiating element; 201. Metal strip; 202. Circular patch; 3. Conductive plate; 301. First conductive hole; 302. Through hole; 4. Support plate; 5. Dielectric substrate; 501. Protrusion; 502. First conductive film; 6. Input port; 7. First strip conductor; 701. First output end; 702. First branch; 8. Dielectric substrate; 801. Strip hole; 802. Second conductive hole; 9. Second conductive film; 901. Opening point; 10. Second strip conductor; 1001. Second output end; 1002. Second branch; 11. Third strip conductor; 1101. Third output end; 1102. Third branch; 12. Solder; 13. Lens; 14. Multi-way power divider. DETAILED DESCRIPTION

[0067] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0068] like Figure 1 The figure shows an antenna array, specifically a dual-polarized antenna array 1, which exhibits good performance in signal transmission and reception. It is mainly composed of a radiating element 2, a conductive plate 3, a support plate 4, a dielectric substrate 5, and a dielectric substrate 8.

[0069] The conductive plate 3 is the base component, generally rectangular in shape, with multiple mounting holes on its surface. Several radiating elements 2 are mounted in an array on its surface. These radiating elements 2, through rational layout, can effectively enhance the signal radiation capability of the antenna array. The dielectric substrate 8 is mounted on the lower surface of the conductive plate 3. Several second feed networks are also distributed on its surface in an array. These second feed networks are connected one-to-one with the radiating elements 2, enabling effective signal transmission and processing. Furthermore, the dielectric substrates 5 are symmetrically mounted on the lower surface of the conductive plate 3, perpendicular to the conductive plate 3. Each dielectric substrate 5 is provided with a first feed network on its surface, which is interconnected with the second feed network on the dielectric substrate 8. The support plate 4 is mounted between the symmetrically arranged dielectric substrates 5 and is in close contact with them, providing reliable structural support for the entire antenna array and enhancing the overall stability of the array.

[0070] As an optional technical solution, the number of radiating elements 2 can be set to six, and the six radiating elements 2 cooperate with two feeding networks (the first feeding network and the second feeding network). Figure 1 The array's oscillator spacing can be less than 1 / 2 wavelength to suppress far side lobes and keep all side lobes within -20dB. The small oscillator spacing results in a smaller space for placing the feed network and enhanced mutual coupling. In addition, Figure 1 The feeding network is set in two mutually perpendicular planes, which reserves more space for the feeding network and reduces the mutual coupling caused by the compact design of the feeding network.

[0071] Combine Figure 2 and Figure 3As can be seen, four rectangular notches are evenly distributed around the circumference of the radiating element 2. The arrangement of these notches creates a natural, petal-like structure between adjacent notches. This geometric design helps optimize the antenna's radiation performance. Furthermore, a metal strip 201 connects to the bottom of each notch, with each of the four notches corresponding to a corresponding metal strip 201. These metal strips 201 penetrate the conductive plate 3, establishing an electrical connection with the second feed network on the dielectric substrate 8, establishing a stable current transmission path and ensuring efficient signal transmission and processing.

[0072] Combine Figure 1 and Figure 4 It can be seen that a plurality of mounting holes are installed on the surface of the conductive plate 3, specifically, Figure 1 As shown, after the radiation element 2 is matched with the conductive plate 3, a first conductive hole 301 is opened on the surface of the conductive plate 3. The first conductive hole 301 corresponds to the position of the output port of the first feeding network. Figure 4 In the embodiment, four through holes 302 are opened on the surface of the conductive plate 3 so that the metal strip 201 of the radiation element 2 can pass through the conductive plate 3 .

[0073] like Figure 5 As shown, the surface of the dielectric substrate 8 is provided with several groups of mating holes. Each group of mating holes includes two strip holes 801 and four second conductive holes 802. The strip holes 801 are connected to the symmetrically distributed dielectric substrate 5, while the second conductive holes 802 are connected to the metal strip 201 of the radiating element 2, achieving physical connection and electrical connectivity between the components.

[0074] It should be noted that a second conductive film 9 is further attached to the dielectric substrate 8 , and an opening point 901 is provided on one side of the second conductive film 9 . The position of the opening point 901 corresponds to the position of the second conductive hole 802 .

[0075] like Figure 6 As shown, each dielectric substrate 5 is coated with a first conductive film 502, and the first feed network constructed thereon has clear functional divisions. The first feed network includes an input port 6 and several first strip conductors 7 connected to the input port 6. These first strip conductors 7 are connected to several first branches 702 in parallel at their ends, remote from the input port 6. This parallel structure facilitates signal diversion and transmission. Each first branch 702 is provided with a first output terminal 701 at its end, remote from the first strip conductor 7.

[0076] As an optional technical solution, the input port 6 can also be installed on the support plate 4 .

[0077] When the dielectric substrate 5 is inserted into the corresponding strip hole 801 of the dielectric substrate 8, the first output end 701 and the second feed network in the strip hole 801 are physically contacted and electrically connected. Through this modular connection method, the first feed network and the second feed network form a complete electrical path, realizing effective conduction and processing of signals between different components, and providing a hardware foundation for the signal transmission function of the antenna array.

[0078] As an optional technical solution, Figure 6 There is one input port 6, two first strip conductors 7 are provided and arranged in parallel, and each first strip conductor 7 is connected to three first branches 702 at a position away from the input port 6, so the second feeding network constitutes a six-way power splitter structure.

[0079] In addition Figure 6 In the figure, six protrusions 501 are provided on the surface of the dielectric substrate 5 facing the conductive plate 3 and inserted into the strip-shaped holes 801, and a first conductive film 502 with a first output end 701 is provided on the surface of the protrusion 501 so that the first output end 701 can be inserted into the strip-shaped hole 801 along with the protrusion 501.

[0080] like Figure 7 As shown, a second feeding network with specific functions is integrated on the second conductive film 9 covering the surface of the dielectric substrate 8. This circuit includes a second strip conductor 10 and a third strip conductor 11. The second strip conductor 10 has one end connected to the second output terminal 1001 and the other end connected to a plurality of parallel second branches 1002. The third strip conductor 11 has one end connected to the third output terminal 1101 and the other end connected to a plurality of parallel third branches 1102.

[0081] The second output end 1001 and the third output end 1101 extend into the two strip-shaped holes 801, respectively, and form an electrical connection with the first output end 701 of the first feed network on the dielectric substrate 5, establishing a signal transmission channel between the circuits. The ends of the second branch 1002 and the third branch 1102 both extend into the corresponding second conductive vias 802, establishing an electrical connection with the metal strips 201 within the vias, enabling signal exchange with the radiating element 2.

[0082] As an optional technical solution, both the second branch 1002 and the third branch 1102 are configured as two branches. When electrically connected to the corresponding metal strips 201, the two second branches 1002 have a 180° phase difference. Similarly, when electrically connected to the corresponding metal strips 201, the two third branches 1102 have a 180° phase difference. This dual-branch design ensures that each branch has a 180° phase difference with the corresponding metal strip 201. This phase difference effectively enables orthogonal polarization transmission of signals, reduces signal interference, improves the antenna array's signal reception and transmission efficiency, and enhances operational stability and communication quality in complex electromagnetic environments.

[0083] like Figure 8 As shown, in the symmetrically arranged dielectric substrate 5 structure, solder 12 is filled between the symmetrically distributed protrusions 501. Through the soldering process, the solder 12 connects the symmetrical first output terminals 701 on the one hand, and connects the first output terminals 701 to the second feed network on the second conductive film 9 on the other hand, forming a stable signal transmission path. This ensures reliable transmission of electrical signals between the first and second feed networks, and provides physical support for the electrical connectivity of the internal circuit system of the antenna array.

[0084] like Figure 9 As shown, a circular patch 202 is mounted on the top surface of radiating element 2. This circular patch 202 optimizes the impedance characteristics of radiating element 2 to achieve efficient matching with the transmission line. Furthermore, its structural design expands the frequency band of the antenna array, enabling the antenna to maintain stable radiation performance across a wider frequency band, meeting the needs of multi-band communications.

[0085] like Figure 10 Shown is a rectangular antenna array, which includes several of the above-mentioned antenna arrays, which are arranged in parallel, and the 1st, 3rd,..., 2n-1th antenna arrays are provided with six radiating elements 2, and the 2nd, 4th,..., 2n-2th antenna arrays are provided with five radiating elements 2, where n is a positive integer greater than or equal to 1.

[0086] like Figure 11 As shown, as an optional technical solution, Figure 11 A total of five parallel antenna arrays are set up, among which the 1st / 3rd and 5th ones are set with six radiating elements 2, and the 2nd and 4th ones are set with five radiating elements 2.

[0087] It should be noted that due to the use of Figure 1 structure, Figure 11Compared with other types of radiators, the radiating element 2 is closer to the conductive plate 3, so the coupling with the adjacent radiating element 2 is smaller than that of other types of elements. Therefore, compared with known antenna arrays, the antenna array of the present invention can operate at a high frequency and provide smaller side lobes.

[0088] It needs to be further explained that Figure 11 In the structure, the ports of the antenna array are connected to the outputs of two five-way feed networks (i.e., the five first outputs 701 of the first feed network), which are not shown. The feed network can be a power splitter to form a desired beam shape, or it can be a complex matrix to form multiple beams from multiple inputs.

[0089] like Figure 12 As shown, a lens antenna includes a cylindrical lens 13. A plurality of antenna arrays as described above are mounted on the surface of the lens 13, and these antenna arrays are arranged in parallel.

[0090] As an optional technical solution, Figure 12 The structure includes a cylindrical lens 13 and three dual-polarization antenna arrays 1 arranged around the lens 13. The dual-polarization antenna array 1 shown in the figure has a small width and can therefore be set close to the lens 13, thereby reducing the size of the multi-beam lens antenna or increasing the number of beams covering the required sector.

[0091] like Figure 13 As shown, it is a lens antenna, and several antenna arrays mentioned above are installed on the surface of the lens 13, and these antenna arrays are arranged in parallel. In addition, the input ports 6 of the second feeding networks of the several antenna arrays are also connected to a multi-way power divider 14.

[0092] As an optional technical solution, Figure 13 The structure comprises three dual-polarized antenna arrays 1, each containing three, four, and five radiating elements 2, respectively. Their input ports 6 are connected to the output of a three-way power divider, providing amplitude and phase information to the radiating elements 2 to form a desired beam shape in the horizontal plane. For example, a cosecant-shaped beam can be formed. The three dual-polarized antenna arrays 1 can be positioned close together to precisely form the desired beam shape covering the desired sector.

[0093] The antenna array of the present invention achieves the effect of operating at high frequencies while providing small sidelobes. By closely arranging the patch-shaped radiating elements 2 on the conductive plate 3 and connecting them to a carefully designed feed network, the present invention not only improves the frequency performance of the antenna array, but also optimizes its directivity and reduces signal interference. In addition, the use of additional circular patches 202 further improves matching and increases the bandwidth, making the antenna array more suitable for broadband communications. These innovative designs enable the antenna array to form multiple beams of ideal shapes while maintaining a compact structure, thereby improving the coverage and efficiency of the communication system.

[0094] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An antenna array, characterized in that: include: Conductive plate (3); A plurality of radiation elements (2) are arrayed and mounted on the upper surface of a conductive plate (3); A dielectric substrate (8) is mounted on the lower surface of the conductive plate (3); The dielectric substrate (8) is provided with a plurality of second feeding networks in an array on its surface, and the second feeding networks are connected to the radiating elements (2) in a one-to-one correspondence; A symmetrically arranged dielectric substrate (5) is mounted on the lower surface of the conductive plate (3) and is perpendicular to the conductive plate (3); A first feeding network is provided on the surface of each dielectric substrate (5), and the first feeding network is connected to the second feeding network; The support plate (4) is installed between the symmetrical dielectric substrates (5) and is in contact with the dielectric substrates (5).

2. The antenna array according to claim 1, wherein: A plurality of notches are provided on the peripheral surface of the radiation element (2); a plurality of metal strips (201) are connected to the bottom of the notches; the metal strips (201) pass through the conductive plate (3) and are electrically connected to the second feeding network.

3. The antenna array according to claim 1, wherein: A circular patch (202) is installed on the upper surface of the radiation element (2), and the circular patch (202) is used to improve matching or increase the frequency band of the antenna array.

4. The antenna array according to claim 2, wherein: The surface of the dielectric substrate (8) is provided with a plurality of groups of matching holes; Each group of matching holes includes at least two strip-shaped holes (801) and at least four second conductive holes (802); The strip-shaped hole (801) is connected to a symmetrical dielectric substrate (5); The second conductive hole (802) is connected to the metal strip (201) of the radiation element (2).

5. The antenna array according to claim 4, characterized in that A first conductive film (502) is attached to the surface of each dielectric substrate (5), and the first conductive film (502) is provided with the first feeding network, which includes: Input port (6); A plurality of first strip conductors (7) connected to the input port (6); One end of each of the first strip conductors (7) away from the input port (6) is connected to a plurality of first branches (702) connected in parallel; Each of the first branches (702) is provided with a first output end (701) at one end away from the first strip conductor (7); The first output end (701) is inserted into the corresponding strip hole (801) along with the dielectric substrate (5) for electrical connection with the second feeding network.

6. The antenna array according to claim 5, characterized in that The surface of the dielectric substrate (5) facing the conductive plate (3) is provided with a plurality of protrusions (501) inserted into the strip-shaped holes (801), and the surface of the protrusions (501) is provided with a first conductive film (502) with a first output end (701).

7. The antenna array according to claim 6, characterized in that In a symmetrical dielectric substrate (5), solder (12) is provided between symmetrical protrusions (501); The solder (12) is used to connect the symmetrical first output terminal (701) and the second feeding network on the second conductive film (9).

8. The antenna array according to claim 5, characterized in that A second conductive film (9) is provided on the surface of the dielectric substrate (8), and the second conductive film (9) is provided with the second feeding network, which includes: A second strip conductor (10), one end of which is connected to the second output end (1001), and the other end of which is connected to a plurality of second branches (1002) connected in parallel; The second output end (1001) extends to a strip-shaped hole (801) and is used for being electrically connected to the first output end (701) of the corresponding first feeding network; The second branch (1002) extends away from one end of the second strip conductor (10) to the corresponding second conductive hole (802) for being electrically connected to the metal strip (201) in the second conductive hole (802); A third strip conductor (11), one end of which is connected to a third output terminal (1101), and the other end of which is connected to a plurality of third branches (1102) connected in parallel; The third output end (1101) extends to another strip-shaped hole (801) and is used for being electrically connected to a first output end (701) of another first feeding network; The third branch (1102) extends away from one end of the second strip conductor (10) to the corresponding second conductive hole (802) for electrically connecting to the metal strip (201) in the second conductive hole (802).

9. The antenna array according to claim 8, characterized in that Two second branches (1002) are provided, and the two second branches (1002) have a phase difference of 180° after being electrically connected to the corresponding metal strips (201); Two third branches (1102) are provided, and the two third branches (1102) have a phase difference of 180° after being electrically connected to the corresponding metal strips (201).

10. A rectangular antenna array, characterized in that: An antenna array comprising any one of claims 1 to 9; The plurality of antenna arrays are arranged in parallel; The 2n-1th antenna array is provided with six radiating elements (2), where n is a positive integer greater than or equal to 1; The 2n-2th antenna array is provided with five radiating elements (2).

11. A lens antenna, characterized in that: It comprises a cylindrical lens (13), wherein a plurality of antenna arrays according to any one of claims 1 to 9 are mounted on the surface of the lens (13); The plurality of antenna arrays are arranged in parallel.

12. The lens antenna according to claim 11, characterized in that: The input ports (6) of the second feeding networks of the plurality of antenna arrays are also connected to a multi-way power divider (14).

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