A dual-polarized 1-bit antenna and digital bit array based on electromagnetic metamaterials

Abstract

The invention discloses a dual-polarized 1-bit antenna based on electromagnetic metamaterials, characterized in that it comprises: a metal floor; a cross-intersecting dielectric substrate; a cross-intersecting annular metal structure with an electromagnetic super-resonator; the cross-intersecting dielectric substrate is fixed on the surface of the metal floor to support the antenna and the electromagnetic super-resonator; the cross-intersecting dielectric substrate has two thin-layer low-loss dielectric substrates, and the two thin-layer low-loss dielectric substrates intersect vertically; the part where the two thin-layer low-loss dielectric substrates intersect vertically and overlap is a cross column; wherein the cross column is perpendicular to the surface of the metal floor; the beneficial effect of the invention is reflected in the proposal of a novel electromagnetic metamaterial dual-polarized 1-bit radiation structure, which has the advantages of miniaturization, high radiation efficiency, good isolation and compact structure. The dual-polarized digital bit array based on electromagnetic metamaterials has the advantages of miniaturization, low cost, dual-polarized multi-beam switching and high design freedom, and can meet the application requirements of dual-polarized 5G multi-beam base stations.

Description

Technical Field

[0001] The present invention belongs to the field of radio frequency antenna technology and relates to the field of multi-beam antenna technology, and specifically relates to a dual-polarization 1-bit antenna and a digital bit array based on electromagnetic metamaterials. Background Art

[0002] The new generation of wireless communication systems represented by 5G wireless communication and smart Internet of Things technology are profoundly changing people's daily lives and various production activities. Compared with the traditional 2G / 3G / 4G wireless communication system, the 5G communication system adopts a new high frequency band, large-scale MIMO architecture and multi-beam scanning technology, so the 5G communication system achieves high transmission rate, low latency and highly stable communication link. However, the traditional 2G / 3G / 4G communication system generally uses omnidirectional antennas or dual-polarized antennas with fixed beams, so it is difficult to meet the performance requirements of the 5G system for multi-beam radiation and dynamic scanning beam alignment. Since the multi-beam antenna has multiple switchable radiation beams or modes, it can selectively align different transmission or incoming wave directions, and can also perform spatial scanning coverage, which can enhance the channel's anti-interference ability and effectively improve the multipath effect. Therefore, multi-beam antenna technology is introduced into 5G base station applications. Digital bit arrays, as a new type of multi-beam antenna, not only have multiple different radiation beams, but also have low-cost characteristics. Compared with traditional phased arrays, digital bit arrays do not require expensive T / R components, so they have significant low-cost characteristics. At the same time, unlike the multi-beam continuous scanning of traditional phased arrays, digital bit arrays can not only achieve the switching of multiple complementary directional patterns, that is, spatial blind coverage, but also perform certain spatial multi-beam scanning.

[0003] At present, according to existing literature, digital bit arrays can be roughly divided into three categories: linear polarization digital 1-bit array, planar two-dimensional digital bit array, circular polarization reconfigurable digital 2-bit array, and leaky wave digital bit array. The linear polarization 1-bit array uses an electrically adjustable 1-bit antenna unit to achieve the switching of multiple complementary beams. It has a single polarization mode and is prone to polarization mismatch in complex electromagnetic channel environments. The planar two-dimensional digital bit array uses a reconfigurable 1-bit patch antenna as an array element for two-dimensional array. In order to achieve beam changes in the two-dimensional plane, a large number of switch bias circuits need to be arranged, so there is a problem of complex structure. At the same time, since the array element is still a linear polarization 1-bit patch antenna, it also has the disadvantage of a single polarization mode. The circularly polarized reconfigurable digital 2-bit array uses a 2-bit (phase switching step is 90°) reconfigurable patch antenna, which can be reconfigured into dual circular polarization (left-hand circular polarization and right-hand circular polarization) while achieving multi-beam switching. In order to achieve multi-beam switching and circular polarization reconfiguration, it is necessary to build a 2-bit phase switcher and a 90° phase shifter, which not only requires a large number of RF switches, but also requires multi-channel voltage control, resulting in high cost and complex structure. The leaky wave digital bit array uses a 2-bit phase shifter to scan the beam at a fixed frequency, but the leaky wave antenna usually has the disadvantages of weak beam control capability and large overall array size. Summary of the invention

[0004] In order to solve the above-mentioned problems in the prior art, the present invention provides a dual-polarization 1-bit antenna and a digital bit array based on electromagnetic metamaterials.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] Provided is a dual-polarization 1-bit antenna based on electromagnetic metamaterials, comprising:

[0007] Metal flooring;

[0008] Cross-intersecting dielectric substrate;

[0009] A crisscross ring-shaped metal structure with an electromagnetic superresonator;

[0010] Wherein, the cross-intersecting dielectric substrate is fixed on the surface of the metal floor to support the antenna and the electromagnetic super resonator;

[0011] The cross dielectric substrate has two sub-dielectric substrates, and the two sub-dielectric substrates are perpendicularly intersected;

[0012] The part where the two sub-medium substrates vertically intersect and overlap is a cross column;

[0013] wherein the cross column is perpendicular to the surface of the metal floor;

[0014] Among them, two mutually perpendicular electromagnetic superresonators form a cross-ring metal structure to form dual-polarized radiation;

[0015] The cross-shaped metal structure includes an open portion and a cross portion, wherein the open portion is the two ends of the two electromagnetic super resonators, and the cross portion is the cross-overlapping portion of the two electromagnetic super resonators;

[0016] Wherein, the cross-intersecting annular metal structure is fixed on the surface of the cross-intersecting dielectric substrate, and the cross portion is fixedly connected to the cross column;

[0017] Wherein, the open end is short-circuited with the metal floor;

[0018] Wherein, the metal floor is a double-sided copper-clad dielectric substrate structure.

[0019] Preferably, the electromagnetic super resonator has a ring-shaped metal structure, a stacked capacitor and a metal floor;

[0020] Wherein, the annular metal structure, the stacked capacitor and the metal floor are used to form a resonant current loop;

[0021] The annular metal structure is an annular metal patch attached to the surface of the cross-intersecting dielectric substrate, and the two ends are short-circuited with the metal floor.

[0022] Preferably, the stacked capacitor is composed of two layers of first metal patches with a cross dielectric substrate sandwiched between them, and is printed on both sides of the cross dielectric substrate;

[0023] A plurality of stacked capacitors are arranged on a ring-shaped metal structure.

[0024] Preferably, the metal floor has a second metal patch, which is mounted on the inner side of the electromagnetic superresonator and serves as a reference floor for the coupling feed structure;

[0025] Wherein, the second metal patch has a gap thereon;

[0026] The second metal patch is vertically attached to the surface around the cross column of the cross dielectric substrate.

[0027] Preferably, there is a U-shaped coupled feeding microstrip line;

[0028] Coupling gap;

[0029] Wherein, the coupling gap is a rectangular elongated gap, etched on both sides of the second metal patch;

[0030] Wherein, the U-shaped coupled feeding microstrip line is a microstrip line structure, which is used to transmit a radio frequency feeding signal;

[0031] The U-shaped coupling feeding microstrip line is printed on the surface of the cross dielectric substrate, one end of the U-shaped coupling feeding microstrip line is connected to the dual polarization feeding microstrip line, and the other end of the U-shaped coupling feeding microstrip line is suspended;

[0032] The slot and the U-shaped coupled feeding microstrip line form a coupled feeding structure, and the coupled feeding structure is used to excite the electromagnetic super resonator;

[0033] Each group of coupling slots is composed of two oppositely arranged coupling feeding structures on the left and right, which are used for 1-bit switching of the radiation wave phase.

[0034] Preferably, there is a dual-polarization feeding microstrip line;

[0035] Wherein, the dual-polarization feeding microstrip line is located on the back side of the metal floor, and the dual-polarization feeding microstrip line is used as a feeding transmission line of the dual-polarization antenna;

[0036] Preferably, there is a phase switching circuit;

[0037] Wherein, the phase switch circuit is connected to a dual-polarization feeding microstrip line;

[0038] Preferably, the phase switch circuit includes a single-pole double-throw switch and its DC bias circuit, which are printed on the back of the metal floor and installed in the middle of the dual-polarization feeding microstrip line to achieve 1-bit phase electrical adjustment switching.

[0039] Provided is a dual-polarization digital bit array based on electromagnetic metamaterials, having array elements;

[0040] Wherein, the array element is a dual-polarized 1-bit antenna based on electromagnetic metamaterials;

[0041] Preferably, the dual-polarization digital bit array based on electromagnetic metamaterials selects the feeding port by controlling the phase switch circuit of each array element to achieve dual-polarization multi-beam digital switching and multi-beam blind spot scanning coverage.

[0042] The beneficial effect of the present invention is that, based on the principle of miniaturization of electromagnetic metamaterials and the high-isolation dual-polarization 1-bit mechanism, the present invention uses an electromagnetic super-resonator radiator to propose a novel electromagnetic metamaterial dual-polarization 1-bit radiation structure, which has the advantages of miniaturization, high radiation efficiency, good isolation and compact structure. The dual-polarization digital bit array based on electromagnetic metamaterials has the advantages of miniaturization, low cost, dual-polarization multi-beam switching and high design freedom, and can meet the application requirements of dual-polarization 5G multi-beam base stations. The dual-polarization digital bit array of the present invention, without using T / R components and multi-beam forming network feeding, only controls the phase bit switch and feeding port on the array element, that is, not only realizes dual-polarization multi-beam switching, but also realizes a low-cost design, meeting the requirements of large-scale deployment of 5G base stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A 3D view of a high-isolation dual-polarization 1-bit antenna based on electromagnetic metamaterials is shown;

[0044] Figure 2 Three views of a high-isolation dual-polarization 1-bit antenna based on electromagnetic metamaterials are shown, wherein (a) is a top view, (b) is a side view, and (c) is a front view;

[0045] Figure 3 shows the bandwidth diagram of a high isolation dual polarization 1-bit antenna based on electromagnetic metamaterials;

[0046] Figure 4 The radiation performance diagram of a high isolation dual-polarization 1-bit antenna based on electromagnetic metamaterials is shown;

[0047] Figure 5 A 3D view of a dual-polarization digital bit array based on electromagnetic metamaterials is shown;

[0048] Figure 6 Three views of a dual-polarization digital bit array based on electromagnetic metamaterials are shown, wherein (a) is a top view, (b) is a side view, and (c) is a front view;

[0049] FIG7 shows a bandwidth diagram of a dual-polarization digital bit array based on electromagnetic metamaterials, wherein FIG7(a) is the reflection coefficient of each array element port, and FIG7(b) is the port isolation between array elements;

[0050] Figure 8 The radiation performance diagram of the dual-polarization digital bit array based on electromagnetic metamaterial is shown, where: (a) represents the 0000 state, (b) represents the 0011 state, (c) represents the 0110 state, and (d) represents the 0101 state. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0052] See also Figure 1-8 As shown, the specific embodiments provided by the present invention are as follows:

[0053] Embodiment 1:

[0054] A dual-polarization 1-bit antenna based on electromagnetic metamaterial, characterized by comprising:

[0055] Metal flooring;

[0056] Cross-intersecting dielectric substrate;

[0057] A crisscross ring-shaped metal structure with an electromagnetic superresonator;

[0058] Wherein, the cross-intersecting dielectric substrate is fixed on the surface of the metal floor to support the antenna and the electromagnetic super resonator;

[0059] The cross dielectric substrate has two sub-dielectric substrates, and the two sub-dielectric substrates are perpendicularly intersected;

[0060] The part where the two sub-medium substrates vertically intersect and overlap is a cross column;

[0061] wherein the cross column is perpendicular to the surface of the metal floor;

[0062] Among them, two mutually perpendicular electromagnetic superresonators form a cross-ring metal structure to form dual-polarized radiation;

[0063] The cross-shaped metal structure includes an open portion and a cross portion, wherein the open portion is the two ends of the two electromagnetic super resonators, and the cross portion is the cross-overlapping portion of the two electromagnetic super resonators;

[0064] Wherein, the cross-intersecting annular metal structure is fixed on the surface of the cross-intersecting dielectric substrate, and the cross portion is fixedly connected to the cross column;

[0065] Wherein, the open end is short-circuited with the metal floor;

[0066] Wherein, the metal floor is a double-sided copper-clad dielectric substrate structure.

[0067] At present, digital bit arrays can be roughly divided into three categories according to existing literature: linearly polarized digital 1-bit array, planar two-dimensional digital bit array, circularly polarized reconfigurable digital 2-bit array, and leaky wave digital bit array. The linearly polarized 1-bit array uses an electrically adjustable 1-bit antenna unit to achieve the switching of multiple complementary beams. It has a single polarization mode and is prone to polarization mismatch in complex electromagnetic channel environments. The planar two-dimensional digital bit array uses a reconfigurable 1-bit patch antenna as an array element for two-dimensional array arrangement. In order to achieve beam changes in a two-dimensional plane, a large number of switch bias circuits need to be arranged, so there is a problem of complex structure. At the same time, since the array element is still a linearly polarized 1-bit patch antenna, it also has the disadvantage of a single polarization mode. The circularly polarized reconfigurable digital 2-bit array uses a 2-bit (phase switching step is 90°) reconfigurable patch antenna, which can be reconfigured into dual circular polarization (left-hand circular polarization and right-hand circular polarization) while achieving multi-beam switching. In order to achieve multi-beam switching and circular polarization reconfiguration, it is necessary to build a 2-bit phase switcher and a 90° phase shifter. Therefore, not only a large number of RF switches are required, but also multi-channel voltage control, which leads to high cost and complex structure. The leaky wave digital bit array uses a 2-bit phase shifter to scan the beam at a fixed frequency, but the leaky wave antenna usually has the disadvantages of weak beam control capability and large overall array size. At present, other forms of digital bit arrays are difficult to achieve miniaturization, low cost and dual-polarization multi-beam switching capabilities, so the existing digital bit arrays are difficult to meet the communication needs of 5G base stations.

[0068] In this embodiment, if Figure 1-4 As shown, it is one of the preferred solutions of the present invention, which proposes a new type of high-isolation dual-polarization 1-bit radiation structure based on electromagnetic metamaterials. The cross-shaped ring metal structure 1 on the antenna is composed of two electromagnetic super-resonators 2 placed perpendicular to each other, which is the radiator of the antenna, thereby realizing the radiation or reception of electromagnetic signals. The cross-shaped dielectric substrate 10 realizes the physical support of the antenna and the electromagnetic super-resonator; the metal floor 11, which is composed of a dielectric substrate covered with copper on both sides, is used as the reference floor of the antenna, and also serves as a circulating current component of the electromagnetic super-resonator to realize the directional radiation of the antenna. It provides two polarization orthogonal radiation modes, which can effectively improve the anti-interference ability, etc.

[0069] The annular electromagnetic super-resonator structure and the cross-shaped electromagnetic metamaterial radiation structure proposed in the present invention have the characteristics of miniaturization, low loss and multi-polarization radiation, based on which linear polarization, dual polarization, circular polarization and tri-polarization radiators can be designed. The antenna of the present invention realizes a miniaturized, high-performance, high-isolation 1-bit dual-polarization antenna design without using an additional phase shifter, and can be applied to different digital bit array applications, such as linear array, planar array and circular array.

[0070] Embodiment 2:

[0071] The electromagnetic superresonator has a ring-shaped metal structure, a stacked capacitor and a metal floor;

[0072] Wherein, the annular metal structure, the stacked capacitor and the metal floor are used to form a resonant current loop;

[0073] The annular metal structure is an annular metal patch attached to the surface of the cross-intersecting dielectric substrate, and the two ends are short-circuited with the metal floor.

[0074] In this embodiment, the electromagnetic super resonator is composed of an annular metal structure 3, a stacked capacitor 4 and a metal floor, forming a resonant current loop, which is equivalent to a magnetic current source placed on the surface of the PEC, realizing directional radiation and miniaturized design; the annular metal structure of the electromagnetic super resonator is an annular conformal metal patch, which maximizes the use of the antenna radiation space based on the Q-chu limit theorem and realizes the maximization of the bandwidth.

[0075] Embodiment 3:

[0076] The stacked capacitor is composed of two layers of first metal patches with a cross dielectric substrate sandwiched between them, and is printed on both sides of the cross dielectric substrate;

[0077] A plurality of stacked capacitors are arranged on a ring-shaped metal structure.

[0078] In this embodiment, the stacked capacitor of the electromagnetic super-resonator is a plurality of capacitor structures connected in series on the annular metal of the electromagnetic super-resonator. The spatial electric field leakage characteristics of the capacitor are utilized to construct a uniform antenna radiation aperture, thereby achieving high radiation efficiency.

[0079] Embodiment 4:

[0080] The metal floor has a second metal patch mounted on the inner side of the electromagnetic superresonator and serves as a reference floor for coupling the feeding structure;

[0081] Wherein, the second metal patch has a gap thereon;

[0082] The second metal patch is vertically attached to the surface around the cross column of the cross dielectric substrate.

[0083] In this embodiment, the vertically placed second metal patch 5 is an extension of the metal floor, and provides a reference ground for the implementation of coupling feeding.

[0084] Embodiment 5:

[0085] A U-shaped coupled feeding microstrip line;

[0086] Coupling gap;

[0087] Wherein, the coupling gap is a rectangular elongated gap, etched on both sides of the second metal patch;

[0088] Wherein, the U-shaped coupled feeding microstrip line is a microstrip line structure, which is used to transmit a radio frequency feeding signal;

[0089] The U-shaped coupling feeding microstrip line is printed on the surface of the cross dielectric substrate, one end of the U-shaped coupling feeding microstrip line is connected to the dual polarization feeding microstrip line, and the other end of the U-shaped coupling feeding microstrip line is suspended;

[0090] The slot and the U-shaped coupled feeding microstrip line form a coupled feeding structure, and the coupled feeding structure is used to excite the electromagnetic super resonator;

[0091] Each group of coupling slots is composed of two oppositely arranged coupling feeding structures on the left and right, which are used for 1-bit switching of the radiation wave phase.

[0092] In this embodiment, the coupling slot 6 is used to couple out the electric field component parallel to the polarization of the electromagnetic super-resonator to realize the excitation of the electromagnetic super-resonator; the U-shaped coupling feeding microstrip line 7 transmits the RF feeding signal to excite the electric field component above the coupling slot, and at the same time, two relatively placed U-shaped coupling feeding microstrip lines excite a pair of electric field components with opposite phases (i.e., 1-bit phase). When one of the U-shaped coupling feeding microstrip lines is excited, the selection of two phases of 0° or 180° can be realized. To simplify the control, the 0° phase is set to the "0" state and the 180° phase is set to the "1" state, i.e., 1-bit switching of the phase (0 / 1).

[0093] Embodiment 6:

[0094] Having dual polarization feeding microstrip line;

[0095] Wherein, the dual-polarization feeding microstrip line is located on the back side of the metal floor, and the dual-polarization feeding microstrip line is used as a feeding transmission line of the dual-polarization antenna;

[0096] Having a phase switching circuit;

[0097] Wherein, the phase switch circuit is connected to a dual-polarization feeding microstrip line;

[0098] The phase switch circuit includes a single-pole double-throw switch and its DC bias circuit, which are printed on the back of the metal floor and installed in the middle of the dual-polarization feeding microstrip line to achieve 1-bit phase electrical adjustment switching.

[0099] In this embodiment, the dual-polarization feeding microstrip line 8 realizes high-isolation dual-polarization feeding; the phase switching circuit 9, composed of a single-pole double-throw switch, is used to select and excite any one of the left and right U-shaped coupled feeding microstrip lines to realize 1-bit phase electrical adjustment switching.

[0100] Embodiment 7:

[0101] Having array elements;

[0102] Wherein, the array element is a dual-polarized 1-bit antenna based on electromagnetic metamaterials;

[0103] Among them, the dual-polarization digital bit array based on electromagnetic metamaterials selects the feeding port by controlling the phase switch circuit of each array element to achieve dual-polarization multi-beam digital switching and multi-beam blind scanning coverage.

[0104] In this embodiment, if Figure 5-8 As shown, it is one of the preferred solutions of the present invention. The array element 12 on the array is composed of four dual-polarization phase 1-bit antennas as array elements. By controlling the phase switch 9 of each array element and selecting the feeding port, dual-polarization multi-beam digital switching and multi-beam blind scanning coverage are realized. In particular, the dual-polarization phase 1-bit antenna is used as the array element of the digital bit array, which can realize high-isolation dual-polarization multi-beam switching at a low cost (a small number of array elements, no need for T / R or phase shifter), and meet the performance requirements of dual-polarization 5G multi-beam base station for dual-polarization coverage radiation and dynamic multi-beam.

[0105] The digital bit array of the present invention realizes multi-beam switching under dual polarization, solves the problem that traditional digital bit arrays are difficult to realize dual polarization radiation, and can meet the requirements of 5G multi-beam base stations for dual polarization multi-beam antennas; the digital bit array of the present invention has a simple array element form, a streamlined control circuit, and low cost, which solves the limitation that traditional multi-beam phased arrays are difficult to deploy and apply on a large scale at low cost due to the need for a large number of array elements and T / R components. The present invention can, to a certain extent, solve the problems of large size and complex structure of traditional digital bit arrays, which are difficult to apply in miniaturized systems or devices. The present invention can, to a certain extent, solve the problems that existing dual polarization digital bit arrays are difficult to achieve dual polarization multi-beam switching while being miniaturized and low-cost.

[0106] The dual-polarized 1-bit antenna and dual-polarized digital bit array can flexibly adjust the frequency, polarization form, quantity and antenna material changes according to different application scenarios, thereby meeting the application requirements of different sub6GHz communication systems.

[0107] It is necessary to state the fact that the array antenna in this embodiment is only a verification embodiment for dual-polarization 5G base station applications, including but not limited to the number of arrays (greater than or equal to two array elements), array form (linear array, circular array, planar array and sparse / sparse array) and bit phase control form (the switch type can be PIN diode, RF switch chip and MEMS switch, etc.).

[0108] In the description of the embodiments of the present invention, it needs to be understood that terms such as “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “center”, “top”, “bottom”, “top”, “bottom”, “inside”, “outside”, “inside”, and “outside” indicate orientation or positional relationships.

[0109] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "assemble" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0110] In the description of the embodiments of the present invention, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0111] In the description of the embodiments of the present invention, it is to be understood that "-" and "~" represent the range between two values, and the range includes the endpoints. For example: "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0112] In the description of the embodiments of the present invention, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0113] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-polarized 1-bit antenna based on electromagnetic metamaterials, characterized in that: include: Metal flooring; Cross-intersecting dielectric substrate; A crisscross ring-shaped metal structure with an electromagnetic superresonator; Wherein, the cross-intersecting dielectric substrate is fixed on the surface of the metal floor to support the electromagnetic super resonator; The cross dielectric substrate has two sub-dielectric substrates, and the two sub-dielectric substrates are perpendicularly intersected; The part where the two sub-medium substrates vertically intersect and overlap is a cross column; wherein the cross column is perpendicular to the surface of the metal floor; Among them, two mutually perpendicular electromagnetic superresonators form a cross-ring metal structure to form dual-polarized radiation; The cross-shaped metal structure includes an open portion and a cross portion, wherein the open portion is the two ends of the two electromagnetic super resonators, and the cross portion is the cross-overlapping portion of the two electromagnetic super resonators; Wherein, the cross-intersecting annular metal structure is fixed on the surface of the cross-intersecting dielectric substrate, and the cross portion is fixedly connected to the cross column; Wherein, the open portion is short-circuited with the metal floor; Wherein, the metal floor has a double-sided copper-clad dielectric substrate structure; The electromagnetic super resonator comprises an annular metal structure, a stacked capacitor and a metal floor; wherein the annular metal structure, the stacked capacitor and the metal floor are used to form a resonant current loop; wherein the annular metal structure is an annular metal patch attached to the surface of a cross-intersecting dielectric substrate, and the two ends are short-circuited with the metal floor; The antenna has a dual-polarization feeding microstrip line, which is used as a feeding transmission line of the dual-polarization antenna; and a phase switching circuit, which is connected to the dual-polarization feeding microstrip line and is used to realize 1-bit phase electrical adjustment switching.

2. The dual-polarized 1-bit antenna based on electromagnetic metamaterial according to claim 1, characterized in that: The stacked capacitor is composed of two layers of first metal patches with a cross dielectric substrate sandwiched between them, and is printed on both sides of the cross dielectric substrate; A plurality of stacked capacitors are arranged on a ring-shaped metal structure.

3. The dual-polarized 1-bit antenna based on electromagnetic metamaterial according to claim 2, characterized in that: The metal floor has a second metal patch mounted on the inner side of the electromagnetic superresonator and serves as a reference floor for coupling the feeding structure; Wherein, the second metal patch has a gap thereon; The second metal patch is vertically attached to the surface around the cross column of the cross dielectric substrate.

4. The dual-polarized 1-bit antenna based on electromagnetic metamaterial according to claim 3, characterized in that: Having a U-shaped coupled feeding microstrip line; Coupling gap; Wherein, the coupling gap is a rectangular elongated gap, etched on both sides of the second metal patch; Wherein, the U-shaped coupled feeding microstrip line is a microstrip line structure, which is used to transmit a radio frequency feeding signal; The U-shaped coupling feeding microstrip line is printed on the surface of the cross dielectric substrate, one end of the U-shaped coupling feeding microstrip line is connected to the dual polarization feeding microstrip line, and the other end of the U-shaped coupling feeding microstrip line is suspended; The slot and the U-shaped coupled feeding microstrip line form a coupled feeding structure, and the coupled feeding structure is used to excite the electromagnetic super resonator; Each group of coupling slots is composed of two oppositely arranged coupling feeding structures on the left and right, which are used for 1-bit switching of the radiation wave phase.

5. A dual-polarization digital bit array based on electromagnetic metamaterials, characterized in that: Having array elements; Wherein, the array element is a dual-polarization 1-bit antenna based on electromagnetic metamaterial as described in any one of claims 1 to 4.

6. The dual-polarization digital bit array based on electromagnetic metamaterial according to claim 5, characterized in that: The dual-polarization digital bit array based on electromagnetic metamaterials selects a feeding port by controlling a phase switch circuit of each array element to achieve dual-polarization multi-beam digital switching and multi-beam blind spot scanning coverage.

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