High-frequency wide-beam and low-frequency wide-view-angle scanning parasitic pixel surface multiplexing antenna

Abstract

The invention discloses a high-frequency wide-beam and low-frequency wide-view-angle scanning parasitic pixel surface multiplexing antenna which comprises a first dielectric substrate layer, a second dielectric substrate layer, a third dielectric substrate layer and a metal bottom plate which are sequentially arranged from top to bottom. The upper surface of the first dielectric substrate layer is provided with a parasitic pixel surface formed by pixel structure units which are arranged in an array mode; printed dipoles are arranged on the upper surface and the lower surface of the second dielectric substrate layer, and feed through a first SMA coaxial connector; the upper surface of the third dielectric substrate layer is provided with a plurality of magnetic dipole units which are arranged in an array. The magnetic dipole unit carries out feeding through the second SMA coaxial connector. According to the invention, a parasitic pixel surface layer, a high-frequency printed dipole layer and a low-frequency wide-angle scanning phased array layer are subjected to structure multiplexing design; and low-frequency and high-frequency normal work can be realized without mutual influence.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communication antennas, and in particular to a high-frequency wideband beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna. Background Art

[0002] The signal coverage and propagation distance of wireless communication systems are closely related to the beam pattern characteristics of the antenna. Generally, fan-shaped wide beams have the characteristics of wide coverage, providing a solution for short-range, wide-area communications and signal perception, while pencil-shaped narrow beams have the ability to turn in a wide angle range and are highly directional, making them suitable for point-to-multipoint communications. In intelligent transportation systems, the high-frequency fan-shaped beams of roadside units can quickly search and capture targets in a large spatial domain, while the low-frequency steering directional beams ensure high-quality communication between them and vehicles, such as Figure 1 shown.

[0003] At present, there are dual-band shared aperture antennas with different radiation characteristics, which are generally divided into three types, namely coplanar design, stacked design and structural reuse. Among them, structural reuse can easily integrate artificial electromagnetic structures into the design and can be regarded as a compact solution. For example, "A single-layer dual-band array at low-frequency ratio with concurrent broad fan beam and narrow pencil beam, (M.Li, L.Pu, M.-C.Tang, and L.Zhu, IEEE Transactions on Antennas and Propagation, vol.70, no.5, pp.3354-3365, May 2022.)" introduces a single-layer, dual-band, shared aperture array suitable for point-to-point and point-to-multipoint communications. Its low-frequency band realizes a fan-shaped wide beam centered at 5GHz, and the adjacent high-frequency band realizes a pencil-shaped narrow beam centered at 5.8GHz. However, the design has a fixed beam, which may not be suitable for modern wireless communication networks.

[0004] Metasurface is an artificial electromagnetic structure that has been widely used in the design of various antennas. For example, "TE surface wave resonances on high-impedance surface based antennas: Analysis and modeling, (F. Costa, O. Luukkonen, C.R. Simovski, A. Monorchio, S.A. Tretyakov, and P.M. De Maagt, IEEE Transactions on Antennas and Propagation, vol. 59, no. 10, pp. 3588–3596, Oct. 2011.)" discloses a metasurface that can support slight TE surface wave resonances. The parasitic layer composed of the periodic arrangement of the metasurface can serve as the surface superconductivity of the antenna, thereby broadening the beam width of the antenna. In addition, “Wide angle impedance matching metamaterials for waveguide-fed phased-array antennas, (S. Sajuyigbe, M. Ross, P. Geren, et al, IET Microwaves Antennas and Propagation, vol. 4, no. 8, pp. 1063-1072, 2010.)” proposed the possibility of designing anisotropic wide angle impedance matching layers by metamaterials. However, metasurfaces often require complex design and verification.

[0005] Currently available antennas that can achieve dual-band fan-shaped wide beams and pencil-shaped narrow beams mostly adopt coplanar design and stacked design, and have fixed beams, which may not be suitable for modern wireless communication networks. Summary of the invention

[0006] In view of the problems existing in the prior art, a high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna is provided.

[0007] The technical solution adopted by the present invention is: a high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna, comprising a first dielectric substrate layer, a second dielectric substrate layer and a third dielectric substrate layer, and a metal bottom plate arranged in sequence from top to bottom;

[0008] A first air layer is formed between the first dielectric substrate layer and the second dielectric substrate layer;

[0009] A second air layer is formed between the second dielectric substrate layer and the third dielectric substrate layer;

[0010] A parasitic pixel surface composed of pixel structural units arranged in an array is provided on the upper surface of the first dielectric substrate layer;

[0011] Printed dipoles are arranged on the upper surface and the lower surface of the second dielectric substrate layer, and the printed dipoles are fed through the first SMA coaxial connector;

[0012] A plurality of magnetic dipole units arranged in an array are arranged on the upper surface of the third dielectric substrate layer; the magnetic dipole units are fed via a second SMA coaxial connector.

[0013] Furthermore, the pixel structure unit includes four unit structures arranged in an array of two rows and two columns and a second unit patch of a square structure disposed between the unit structures;

[0014] The unit structure includes four first unit patches, and the four first unit patches are sequentially connected through connecting arms to form a square structure;

[0015] The side of the first unit patch which is not connected to the connecting arm and is arranged inside the pixel structure unit is provided with a first extension portion extending outside the first unit patch;

[0016] The side of the second patch unit arranged inside the pixel structure unit is provided with a second extension portion extending outside the second unit patch.

[0017] Furthermore, the first unit patch and the second unit patch have the same structure and are arranged in an array within the pixel structure unit.

[0018] Furthermore, the printed dipole disposed on the upper surface of the second dielectric substrate layer includes a first dipole arm, and the first dipole arm is connected to a first SMA coaxial connector through a first microstrip transmission line for feeding.

[0019] Furthermore, the printed dipole disposed on the lower surface of the second dielectric substrate layer includes a second dipole arm, and a second microstrip transmission line is connected to the first SMA coaxial connector through a microstrip balun for feeding.

[0020] Furthermore, the magnetic dipole unit is a semicircular ring structure, and a plurality of metal through holes are provided along the outer ring edge of the magnetic dipole unit, which sequentially pass through the third dielectric substrate layer and the metal bottom plate and are connected to the second SMA coaxial connector.

[0021] Furthermore, the magnetic dipole units are provided in eight numbers, and two adjacent magnetic dipole units are arranged in a row with equal spacing;

[0022] The second SMA coaxial connectors are arranged in one-to-one correspondence with the magnetic dipole units.

[0023] Nearly double, the first air layer is 1.1mm~1.3mm.

[0024] Furthermore, the second air layer is 7.2 mm to 8.8 mm.

[0025] Furthermore, the first dielectric substrate layer, the second dielectric substrate layer, the third dielectric substrate layer and the metal bottom plate are fixed by arranging nylon columns; the first dielectric substrate layer, the second dielectric substrate layer, the third dielectric substrate layer and the metal bottom plate are all provided with through holes at positions corresponding to the nylon columns.

[0026] The beneficial effects of the present invention are:

[0027] (1) The first dielectric substrate layer of the present invention is provided with a parasitic pixel surface layer composed of pixel structure units arranged in an array on the upper surface, and the second dielectric substrate layer and the printed dipoles provided on the surface thereof form a high-frequency printed dipole layer; the third dielectric substrate layer is provided with a magnetic dipole unit on the upper surface, which together with the second SMA coaxial connector and the metal bottom plate form a low-frequency wide-angle scanning phased array layer; the present invention performs structural multiplexing design on the parasitic pixel surface layer, the high-frequency printed dipole layer, and the low-frequency wide-angle scanning phased array layer; the low frequency and the high frequency can work normally without affecting each other, and finally achieve a beam scanning performance of ±60° in the 3.55GHz to 3.75GHz frequency band, and a beam coverage performance of more than 120° in the 5.6GHz to 7.4GHz frequency band, providing a reliable solution for communication perception integration;

[0028] (2) The parasitic pixel surface layer in the present invention can effectively improve the wide-angle scanning phased array, effectively suppress the propagation of surface waves in the near-field resonance region of the array, and effectively broaden its active impedance bandwidth while improving the scanning field of the phased array. The -10dB impedance bandwidth reaches 3.55GHz to 3.75GHz, and achieves a beam scanning performance of ±60°;

[0029] (3) The parasitic pixel surface layer of the present invention serves as a surface waveguide for the high-frequency beam printed dipole. The parasitic pixel surface has the same resonant frequency as the high-frequency wide-beam dipole, and can support the propagation of slight TE mode surface waves, thereby widening the half-power beam width of the dipole and simultaneously widening its impedance bandwidth. The impedance bandwidth at high frequencies reaches 5.6 GHz to 7.4 GHz, and a beam coverage of more than 120° is achieved within the working bandwidth. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of an application scenario of the multiplexed antenna of the present invention.

[0031] Figure 2 It is a side view of the multiplexing antenna of the present invention.

[0032] Figure 3 It is a schematic diagram of the upper surface of the parasitic pixel surface in the present invention.

[0033] Figure 4 It is a schematic diagram of the structure of the pixel structure unit in the present invention.

[0034] Figure 5 It is a schematic diagram of the upper surface of the high frequency printed dipole layer in the present invention.

[0035] Figure 6 It is a schematic diagram of the lower surface of the high-frequency printed dipole layer of the present invention.

[0036] Figure 7 It is a schematic diagram of the upper surface of the low-frequency wide-angle scanning phased array layer in the present invention.

[0037] Figure 8 This is a simulation curve showing that the active reflection coefficient of the central unit of the wide-angle scanning phased array of the multiplexing antenna at low frequency and the isolation between the central unit and the high-frequency element vary with frequency in Example 1 of the present invention.

[0038] Fig. 9 This is a simulated scanning pattern of the multiplexing antenna in Example 1 of the present invention at the low-frequency center frequency of 3.6 GHz.

[0039] Fig.10 It is a simulation curve showing that the reflection coefficient of the dipole of the multiplexing antenna at high frequency and the isolation between the multiplexing antenna and the low-frequency element vary with frequency in Example 1 of the present invention.

[0040] Fig.11 1 is the simulated normalized radiation pattern of the multiplexing antenna in Example 1 of the present invention at typical high frequencies of 5.2 GHz, 5.8 GHz, and 6.4 GHz.

[0041] Fig.12 This is a simulation curve showing how the gain of the multiplexing antenna at high frequencies varies with frequency in Example 1 of the present invention.

[0042] In the figure: 1-first dielectric substrate layer, 2-second dielectric substrate layer, 3-third dielectric substrate layer, 4-pixel structure unit, 4-1-first unit patch, 4-2-second unit patch, 4-3-connecting arm, 4-4-first extension portion, 4-5-second extension portion, 5-through hole, 6-1-first dipole arm, 6-2-second dipole arm, 7-1-first microstrip transmission line, 7-2-second microstrip transmission line, 8-first SMA coaxial connector, 9-microstrip balun, 10-metal base plate, 11-magnetic dipole unit, 12-metal through hole, 13-second SMA coaxial connector. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] like Figure 2As shown, a high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna includes a first dielectric substrate layer 1, a second dielectric substrate layer 2 and a third dielectric substrate layer 3, and a metal bottom plate 10 which are arranged in sequence from top to bottom;

[0045] A first air layer is formed between the first dielectric substrate layer 1 and the second dielectric substrate layer 2; the first air layer is 1.1 mm to 1.3 mm.

[0046] A second air layer is formed between the second dielectric substrate layer 2 and the third dielectric substrate layer 3; the second air layer is 7.2 mm to 8.8 mm.

[0047] The upper surface of the first dielectric substrate layer 1 is provided with a parasitic pixel surface composed of pixel structure units 4 arranged in an array; Figure 3 shown.

[0048] Printed dipoles are arranged on the upper and lower surfaces of the second dielectric substrate layer 2, and the printed dipoles are fed through the first SMA coaxial connector 8;

[0049] The upper surface of the third dielectric substrate layer 3 is provided with a plurality of magnetic dipole units 11 arranged in an array; the magnetic dipole units 11 are connected to the substrate via a second SMA coaxial connector 13 ( Figure 2 Ports 2 to 9 in the circuit are used for feeding.

[0050] Pixel structure unit 4, such as Figure 4 As shown, it includes four unit structures arranged in an array of two rows and two columns and a second unit patch 4-2 of a square structure arranged between the unit structures; the unit structure includes four first unit patches 4-1, and the four first unit patches are sequentially connected by connecting arms 4-3 to form a square structure; the first unit patch 4-1 is not connected to the connecting arm 4-3 and is arranged inside the pixel structure unit 4. The side is provided with a first extension portion 4-4 extending to the outside of the first unit patch 4-1; the side of the second patch unit 4-2 is provided inside the pixel structure unit 4. The first unit patch 4-2 and the second unit patch 4-1 have the same structure and are arranged in an array in the pixel structure unit 4.

[0051] like Figure 5 and Figure 6 As shown, the printed dipole disposed on the upper surface of the second dielectric substrate layer 2 includes a first dipole arm 6-1, and the first dipole arm 6-1 is connected to the first SMA coaxial connector 8 through a first microstrip transmission line 7-1 for feeding. The printed dipole disposed on the lower surface of the second dielectric substrate layer 2 includes a second dipole arm 6-2, and the second microstrip transmission line 7-2 is connected to the first SMA coaxial connector 8 through a microstrip balun 9 for feeding.

[0052] like Figure 7As shown, the magnetic dipole unit 11 is a semicircular ring structure, and the magnetic dipole unit 11 is provided with a plurality of metal through holes 12 along the outer ring edge, which sequentially pass through the third dielectric substrate layer 3 and the metal bottom plate 10 and connect to the second SMA coaxial connector 13 (a metal layer can be provided on the inner surface as long as feeding can be achieved).

[0053] The first dielectric substrate layer 1, the second dielectric substrate layer 2, the third dielectric substrate layer 3 and the metal base plate 10 are fixed by arranging nylon columns; the first dielectric substrate layer 1, the second dielectric substrate layer 2, the third dielectric substrate layer 3 and the metal base plate 10 are all provided with through holes 5 at positions corresponding to the nylon columns.

[0054] Example 1

[0055] A high-frequency wide-beam and low-frequency wide-view scanning parasitic pixel surface multiplexing antenna comprises a first dielectric substrate layer 1, a second dielectric substrate layer 2, a third dielectric substrate layer 3, and a metal bottom plate 10 arranged in sequence from top to bottom; the first dielectric substrate layer 1

[0056] The second dielectric substrate layer 2, the third dielectric substrate layer 3, and the metal base plate 10 are fixed by arranging nylon columns; the first dielectric substrate layer 1, the second dielectric substrate layer 2, the third dielectric substrate layer 3, and the metal base plate 10 are all provided with through holes 5 at positions corresponding to the nylon columns; the through holes 5 are arranged along the periphery of the first dielectric substrate layer 1.

[0057] A first air layer is formed between the first dielectric substrate layer 1 and the second dielectric substrate layer 2; the first air layer is 1.2 mm.

[0058] A second air layer is formed between the second dielectric substrate layer 2 and the third dielectric substrate layer 3; the second air layer is 8.0 mm.

[0059] The upper surface of the first dielectric substrate layer 1 is provided with a parasitic pixel surface composed of pixel structure units 4 arranged in an array; the pixel parasitic surface is periodically arranged with 12×36 pixel structure units 4. The pixel structure unit 4 includes four unit structures arranged in an array of two rows and two columns and a second unit patch 4-2 of a square structure arranged between the unit structures;

[0060] The unit structure includes four first unit patches 4-1, and the four first unit patches are sequentially connected through a connecting arm 4-3 to form a square structure;

[0061] The first unit patch 4-1 is not connected to the connecting arm 4-3 and is arranged inside the pixel structure unit 4. A first extension part 4-4 extending to the outside of the first unit patch 4-1 is arranged on the side thereof;

[0062] The second patch unit 4-2 is provided with a second extension portion 4-5 extending outside the second patch unit 4-2 at the edge thereof disposed inside the pixel structure unit 4. The first patch unit 4-2 and the second patch unit 4-1 have the same structure and are arranged in an array in the pixel structure unit 4.

[0063] Printed dipoles are arranged on both the upper and lower surfaces of the second dielectric substrate layer 2, and the printed dipoles are fed through the first SMA coaxial connector 8; the printed dipole arranged on the upper surface of the second dielectric substrate layer 2 includes a first dipole arm 6-1, and the first dipole arm 6-1 is connected to the first SMA coaxial connector 8 through a first microstrip transmission line (50Ω) 7-1 for side feeding. The printed dipole arranged on the lower surface of the second dielectric substrate layer 2 includes a second dipole arm 6-2, a second microstrip transmission line (50Ω) 7-2 connected to the first SMA coaxial connector 8 through a microstrip balun 9 for side feeding. The first dipole arm 6-1 and the second dipole arm 6-2 are arranged symmetrically. The second dielectric substrate layer 2 and the printed dipole are used to provide wide beam coverage performance in the high frequency band (5.8GHz).

[0064] 1×8 magnetic dipole units 11 are arranged on the upper surface of the third dielectric substrate layer 3; the magnetic dipole unit 11 is back-fed through the second SMA coaxial connector 13 arranged one-to-one with it. The magnetic dipole unit 11 is a semicircular ring structure, and the magnetic dipole unit 11 is provided with a plurality of metal through holes 12 along the outer ring edge, which sequentially pass through the third dielectric substrate layer 3 and the metal bottom plate 10 and connect to the second SMA coaxial connector 13. The metal through holes 12 are loaded around the magnetic dipole unit 11 to simulate the short-circuit probe and form an equivalent magnetic wall, so that the size of the antenna is reduced by half. The entire array is composed of the magnetic dipole unit 11, which is connected to the magnetic dipole unit 11 by the second SMA coaxial connector 13 and the third dielectric substrate layer 3 for feeding, so as to provide wide-angle scanning performance in the low frequency band (3.6GHz).

[0065] A parasitic pixel surface layer composed of array-arranged pixel structure units is arranged on the upper surface of the first dielectric substrate layer 1, and a high-frequency printed dipole layer is formed by the second dielectric substrate layer 2 and the printed dipole arranged on the surface thereof; a magnetic dipole unit 11 is arranged on the upper surface of the third dielectric substrate layer 3, which together with the second SMA coaxial connector 13 and the metal base plate 10 constitute a low-frequency wide-angle scanning phased array layer.

[0066] The parasitic pixel surface is not only used for the wide-angle matching layer of the low-frequency wide-angle scanning phased array to improve the scanning viewing angle and active impedance matching performance of the low-frequency wide-angle scanning performance, but is also structurally reused in the surface waveguide of the high-frequency wide-beam printed dipole, which can excite its slight TM mode surface wave and widen the half-power beam width and impedance bandwidth of the high-frequency dipole; non-metallic through holes 5 are distributed on the edges of the dielectric substrate layers 1, 2, and 3, and are used to connect and fix the entire structural reuse antenna structure.

[0067] Figure 8 The active reflection coefficient of the central unit (corresponding to port 5 (i.e., the fourth second SMA coaxial connector from left to right)) of the multiplexed antenna at low frequency and the simulation curve of the isolation between it and the high-frequency element (port 1, i.e., the first SMA coaxial connector) in Example 1 of the present invention varies with frequency. It can be seen from the figure that the active -10dB impedance bandwidth of the antenna in the low frequency band is 3.55GHz to 3.75GHz, and the relative center bandwidth is 5.5%; and the isolation between the low-frequency element and the high-frequency element is about 30dB within the working bandwidth, indicating that the high-frequency element will not affect the low-frequency wide-angle scanning performance.

[0068] Fig. 9 This is the simulated scanning pattern of the multiplexing antenna at the low-frequency center frequency of 3.6 GHz in Example 1 of the present invention. The simulated active radiation direction scanned to different angles is shown in the figure. It can be seen from the figure that the maximum gain is about 13 dBi, the scanning range covers ±60°, and the normalized sidelobe level is lower than -10 dB, and the gain fluctuation is less than 3 dB.

[0069] Fig.10 The simulation curve of the reflection coefficient of the dipole (corresponding to port 1) of the multiplexing antenna at high frequency and the isolation between it and the low-frequency element (port 5) in Example 1 of the present invention varies with frequency. It can be seen from the figure that the -10dB impedance bandwidth of the antenna in the high frequency band is 5.6GHz to 7.4GHz, the relative center bandwidth is 13.8%, and the isolation between it and the low-frequency element is higher than 30dB within the working bandwidth, indicating that the low-frequency element will not affect the high-frequency wide beam scanning performance.

[0070] Fig.11 The simulated normalized radiation patterns of the multiplexing antenna at the typical high frequencies of 5.2 GHz, 5.8 GHz and 6.4 GHz in Example 1 of the present invention are shown in FIG. It can be seen from the figure that the beam width is greater than 120° at 5.2 GHz, 5.8 GHz and 6.4 GHz.

[0071] Fig.12 This is a simulation curve of the gain of the multiplexing antenna at high frequency varying with frequency in Embodiment 1 of the present invention. It can be seen from the figure that within the working frequency band of the dipole, a stable gain is maintained, the maximum gain is 7.7dBi, and the gain within the bandwidth is stable at 7dBi±0.7dBi.

[0072] The excitation signal of the high-frequency wide-beam dipole antenna of the present invention is fed by the first SMA connector through a 50Ω microstrip line, and the low-frequency wide-angle scanning phased array antenna is fed by the second SMA coaxial connector directly through the third dielectric layer and the metal bottom plate to the magnetic dipole unit, thereby forming radiation. In order to achieve wide-angle scanning performance, a metal through-hole structure is loaded at the edge of the magnetic dipole unit, and while reducing the size of the magnetic dipole unit, the wide-beam performance of the array element is achieved, thereby achieving a wide-angle scanning effect. The wide-angle scanning phased array working in the low-frequency band and the wide-beam printed dipole stacking design working in the high-frequency band are realized, and the dual-bandwidth beam coverage and wide-angle scanning performance design are realized, and by loading a parasitic pixel surface composed of periodically arranged pixel units as a wide-angle matching layer of the low-frequency wide-angle scanning phased array and a surface waveguide of the high-frequency wide-beam dipole, while improving the scanning viewing angle and active impedance matching of the low-frequency wide-angle scanning phased array, the half-power beam width and impedance bandwidth of the high-frequency wide-beam dipole are broadened.

Claims

1. A high frequency wide beam and low frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna, characterized in that: It comprises a first dielectric substrate layer (1), a second dielectric substrate layer (2), a third dielectric substrate layer (3), and a metal bottom plate (10) which are arranged in sequence from top to bottom; A first air layer is formed between the first dielectric substrate layer (1) and the second dielectric substrate layer (2); A second air layer is formed between the second dielectric substrate layer (2) and the third dielectric substrate layer (3); A parasitic pixel surface composed of pixel structure units (4) arranged in an array is provided on the upper surface of the first dielectric substrate layer (1); Printed dipoles are arranged on the upper surface and the lower surface of the second dielectric substrate layer (2), and the printed dipoles are fed via a first SMA coaxial connector (8); A plurality of magnetic dipole units (11) arranged in an array are provided on the upper surface of the third dielectric substrate layer (3); the magnetic dipole units (11) are fed via a second SMA coaxial connector (13).

2. The high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna according to claim 1, characterized in that: The pixel structure unit (4) comprises four unit structures arranged in an array of two rows and two columns and a second unit patch (4-2) of a square structure arranged between the unit structures; The unit structure comprises four first unit patches (4-1), and the four first unit patches are connected in sequence through connecting arms (4-3) to form a square structure; The first unit patch (4-1) is not connected to the connecting arm (4-3), and the edge arranged inside the pixel structure unit (4) is provided with a first extension part (4-4) extending toward the outside of the first unit patch (4-1); The side of the second patch unit (4-2) arranged inside the pixel structure unit (4) is provided with a second extension part (4-5) extending toward the outside of the second unit patch (4-2).

3. The high-frequency wide-beam and low-frequency wide-view scanning parasitic pixel surface multiplexing antenna according to claim 2, characterized in that: The first unit patch (4-2) and the second unit patch (4-1) have the same structure and are arranged in an array within the pixel structure unit (4).

4. The high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna according to claim 1, characterized in that: The printed dipole arranged on the upper surface of the second dielectric substrate layer (2) comprises a first dipole arm (6-1), and the first dipole arm (6-1) is connected to a first SMA coaxial connector (8) via a first microstrip transmission line (7-1) for power feeding.

5. The high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna according to claim 4, characterized in that: The printed dipole arranged on the lower surface of the second dielectric substrate layer (2) comprises a second dipole arm (6-2) and a second microstrip transmission line (7-2) connected to a first SMA coaxial connector (8) via a microstrip balun (9) for power feeding.

6. The high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna according to claim 1, characterized in that: The magnetic dipole unit (11) is a semicircular ring structure, and is provided with a plurality of metal through holes (12) along the outer ring edge, which sequentially pass through the third dielectric substrate layer (3) and the metal bottom plate (10) and are connected to the second SMA coaxial connector (13).

7. The high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna according to claim 6, characterized in that: The magnetic dipole units (11) are provided in eight numbers, and two adjacent magnetic dipole units (11) are arranged in a row at equal intervals; The second SMA coaxial connector (13) is arranged in one-to-one correspondence with the magnetic dipole unit (11).

8. The high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna according to claim 1, characterized in that: The first air layer is 1.1 mm to 1.3 mm.

9. The high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna according to claim 8, characterized in that: The second air layer is 7.2 mm to 8.8 mm.

10. The high-frequency wide beam and low-frequency wide viewing angle scanning parasitic pixel surface multiplexing antenna according to claim 1, characterized in that: The first dielectric substrate layer (1), the second dielectric substrate layer (2), the third dielectric substrate layer (3), and the metal base plate (10) are fixedly arranged by arranging nylon columns; the first dielectric substrate layer (1), the second dielectric substrate layer (2), the third dielectric substrate layer (3), and the metal base plate (10) are all provided with through holes (5) at positions corresponding to the nylon columns.

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