Wide-angle scanning ultra-wideband antenna unit, antenna array and electronic equipment

Abstract

The invention provides a wide-angle scanning ultra-wideband antenna unit, an antenna array and electronic equipment, and relates to the technical field of antennas. The wide-angle scanning ultra-wideband antenna unit comprises an FSS assembly, a resistive stub and a gradually-changed balun, and the performance parameters of the wide-angle scanning ultra-wideband antenna unit are adjusted based on the FSS assembly and the resistive stub, so that the gradually-changed balun can perform ultra-wideband matching in a short distance, and the low-profile wide-angle scanning ultra-wideband antenna unit is realized. And the compact design can be realized while the ultra-wideband matching high performance can be realized.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to a wide-angle scanning ultra-wideband antenna unit, an antenna array and an electronic device. Background Art

[0002] With the rapid development of communication technology and radar technology, ultra-wideband antennas have become the key driving force for improving the overall performance of the system, leading the diversification and integration of the system. However, it is not easy to achieve engineering applications in this field, and it faces multiple challenges; specifically, it is necessary to pursue an extremely low profile to reduce the installation space, and to ensure a wide range of scanning angles to cover diverse needs, while also meeting high standards in terms of structural stability and cost-effectiveness. In the field of communications, dual-polarization antennas can double the spectrum utilization, and in the field of detection and imaging, dual-polarization antennas can obtain polarization information of the detected target.

[0003] Therefore, how to improve the performance of the antenna unit and achieve compact design is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In view of the above problems, the present application provides a wide-angle scanning ultra-wideband antenna unit, antenna array and electronic equipment to achieve the purpose of improving performance and compact design. The specific solution is as follows:

[0005] A first aspect of the present application provides a wide-angle scanning ultra-wideband antenna unit, the wide-angle scanning ultra-wideband antenna unit comprising:

[0006] Wide angle matching dielectric layer and bottom plate arranged opposite to each other;

[0007] A dual-polarization interdigital antenna substrate located between the wide-angle matching dielectric layer and the bottom plate; the dual-polarization interdigital antenna substrate comprises two interdigitated circuit boards, wherein the plane where the circuit boards are located is perpendicular to the plane where the wide-angle matching dielectric layer is located;

[0008] The circuit board comprises: an FSS component, a resistive branch and a gradient balun; the FSS component and the resistive branch are used to adjust the performance parameters of the wide-angle scanning ultra-wideband antenna unit.

[0009] Preferably, in the above-mentioned wide-angle scanning ultra-wideband antenna unit, the circuit board further comprises: a FSS wide-angle matching layer;

[0010] The FSS wide-angle matching layer contacts the wide-angle matching medium layer.

[0011] Preferably, in the above wide-angle scanning ultra-wideband antenna unit, the circuit board also includes:

[0012] Capacitively coupled dipole antenna for ultra-wideband radiation.

[0013] Preferably, in the above wide-angle scanning ultra-wideband antenna unit, the circuit board further comprises: a C-shaped plug-in coupling capacitor;

[0014] In the dual-polarized plug-in antenna substrate, the opening of the C-shaped plug-in coupling capacitor on one circuit board faces the wide-angle matching dielectric layer, and the opening of the C-shaped plug-in coupling capacitor on the other circuit board faces the bottom plate.

[0015] Preferably, in the above wide-angle scanning ultra-wideband antenna unit, the circuit board further comprises: a feeding structure;

[0016] The gradient balun includes a microstrip line;

[0017] The feeding structure is located below the tapered balun and connected to the lower end of the microstrip line.

[0018] Preferably, in the above-mentioned wide-angle scanning ultra-wideband antenna unit, the wide-angle scanning ultra-wideband antenna unit further includes:

[0019] A supporting structure for supporting the wide-angle matching dielectric layer, wherein the supporting structure and the wide-angle matching dielectric layer are integrally arranged.

[0020] Preferably, in the above wide-angle scanning ultra-wideband antenna unit, the wide-angle scanning ultra-wideband antenna unit further comprises: a grounding post;

[0021] The FSS component and / or the FSS wide-angle matching layer is connected to the ground post.

[0022] Preferably, in the above wide-angle scanning ultra-wideband antenna unit, the bottom plate is a metal bottom plate;

[0023] The circuit board is a PCB board.

[0024] A second aspect of the present application provides an antenna array, the antenna array comprising a plurality of antenna units, the antenna units being the wide-angle scanning ultra-wideband antenna units described in any one of the above items.

[0025] A third aspect of the present application provides an electronic device, the electronic device comprising the wide-angle scanning ultra-wideband antenna unit as described in any one of the above items;

[0026] Alternatively, the electronic device includes the antenna array described above.

[0027] By means of the above technical scheme, the present application provides a wide-angle scanning ultra-wideband antenna unit, an antenna array and an electronic device. The wide-angle scanning ultra-wideband antenna unit includes an FSS component, a resistive branch and a gradient balun. The performance parameters of the wide-angle scanning ultra-wideband antenna unit are adjusted based on the FSS component and the resistive branch. On the one hand, the gradient balun can perform ultra-wideband matching within a shorter distance, and on the other hand, the spatial matching of the antenna radiation unit is improved, thereby realizing a low-profile wide-angle scanning ultra-wideband antenna unit, which can achieve high performance of ultra-wideband matching while realizing a compact design. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0029] Figure 1 A perspective schematic diagram of a wide-angle scanning ultra-wideband antenna unit provided by an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the structure of an antenna array provided by an embodiment of the present invention;

[0031] Figure 3 A schematic cross-sectional view of an antenna array provided by an embodiment of the present invention;

[0032] Figure 4 A method provided by an embodiment of the present invention Figure 2 Schematic diagram of the 2-18GHz standing wave simulation results of the antenna array shown;

[0033] Figure 5 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the simulation results of the antenna array radiation efficiency from 2 to 18 GHz is shown;

[0034] Figure 6 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the beam simulation results of the antenna array in the array scanning direction at 5 GHz frequency;

[0035] Figure 7 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the beam simulation results of the antenna array in the array scanning direction at 8 GHz frequency;

[0036] Figure 8 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the beam simulation results of the antenna array in the array scanning direction at the 11 GHz frequency point is shown;

[0037] Fig. 9 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the beam simulation results of the antenna array in the array scanning direction at the 14 GHz frequency point is shown;

[0038] Fig.10 A method provided by an embodiment of the present invention Figure 2 The diagram shows the beam simulation results of the antenna array in the array scanning direction at the 17 GHz frequency. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation mode of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. It is known to those skilled in the art that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0040] It should be noted that the directional words appearing in the present invention are based on the relative position relationship shown in the drawings and cannot be used as an absolute limitation to the present application.

[0041] During the invention process of this application, it was found that some antennas in the prior art do not consider the realization of multi-polarization. In the feeding part, the coaxial and exponential gradient lines are directly welded, which is not conducive to processing and matching in engineering applications. In some prior arts, the dipole and feeding network of each antenna unit are printed on both sides of the dielectric substrate; however, this antenna also does not consider the realization of multi-polarization. In the feeding part, the profile height of the Klopfenstein gradient line is too high, which is not conducive to compact design. In the model, the WAIM is suspended on the antenna dipole, and it is difficult to control the relative height of the WAIM and the antenna.

[0042] Based on this, the present application provides a wide-angle scanning ultra-wideband antenna unit, an antenna array and an electronic device to achieve the purpose of improving performance and compact design.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] refer to Figure 1 , Figure 1 A perspective schematic diagram of a wide-angle scanning ultra-wideband antenna unit provided in an embodiment of the present invention. The wide-angle scanning ultra-wideband antenna unit provided in an embodiment of the present invention includes:

[0045] The wide angle matching dielectric layer 10 and the bottom plate 11 are arranged opposite to each other.

[0046] A dual-polarization interdigitated antenna substrate 12 is located between the wide-angle matching dielectric layer 10 and the bottom plate 11; the dual-polarization interdigitated antenna substrate 12 includes two interdigitated circuit boards to achieve dual-polarization radiation, and the plane where the circuit boards are located is perpendicular to the plane where the wide-angle matching dielectric layer 10 is located.

[0047] The circuit board includes: an FSS component 13, a resistive branch 14 and a gradient balun 15; the FSS component 13 and the resistive branch 14 are used to adjust the performance parameters of the wide-angle scanning ultra-wideband antenna unit. In other words, the FSS component 13 improves the low-profile problem of the antenna radiation unit, which is conducive to reducing the low-frequency section height and improving the low-frequency antenna radiation matching. Therefore, in general, the FSS component 13 and the resistive branch 14 are used to adjust the performance parameters of the wide-angle scanning ultra-wideband antenna unit.

[0048] It should be noted that the gradient balun 15 includes but is not limited to an exponential gradient balun, and its structure may also be a beveled or stepped structure. In the embodiment of the present invention, the gradient balun 15 is preferably an exponential gradient balun.

[0049] Specifically, in the embodiment of the present invention, the wide-angle matching dielectric layer 10 includes but is not limited to a dielectric material layer, an artificial electromagnetic material layer or a periodic electromagnetic structure layer, and is mainly used for wide-angle scanning matching. In a possible implementation, the wide-angle scanning ultra-wideband antenna unit also includes: a supporting structure for supporting the wide-angle matching dielectric layer 10, and the supporting structure is integrated with the wide-angle matching dielectric layer 10. In other words, the structure of the wide-angle matching dielectric layer 10 may contain a self-supporting structure for supporting the wide-angle matching dielectric layer 10.

[0050] The wide-angle matching dielectric layer 10 is disposed on the top of the wide-angle scanning ultra-wideband antenna unit to achieve impedance matching within a wide angle range, wherein the dielectric constant of the wide-angle matching dielectric layer 10 varies in a gradient to optimize the transmission characteristics of electromagnetic waves.

[0051] In an embodiment of the present invention, the wide-angle scanning ultra-wideband antenna unit includes an FSS component 13, a resistive branch 14 and a gradient balun 15. The performance parameters of the gradient balun 15 are adjusted based on the FSS component 13 and the resistive branch 14, so that the gradient balun 15 can perform ultra-wideband matching within a shorter distance, thereby realizing a low-profile wide-angle scanning ultra-wideband antenna unit, and achieving a compact design while achieving high performance of ultra-wideband matching.

[0052] In an optional embodiment of the present invention, Figure 1 As shown, the circuit board further includes: a FSS wide-angle matching layer 16 ; the FSS wide-angle matching layer 16 is in contact with the wide-angle matching medium layer 10 .

[0053] The FSS wide-angle matching layer 16 is disposed below the wide-angle matching dielectric layer 10 and includes a frequency selective surface structure with a specific pattern, which is used to provide impedance matching within a wide angle range and suppress electromagnetic waves in a specific frequency band through frequency selective characteristics.

[0054] Specifically, in the embodiment of the present invention, the positional relationship between the FSS wide-angle matching layer 16 and the wide-angle matching dielectric layer 10 is equivalent to a close positional relationship, so that the antenna spatial impedance is matched in the wide-angle domain, which is not a suspended design in the prior art. Based on the WAIN matching layer used in conjunction with the FSS wide-angle matching layer 16 and the wide-angle matching dielectric layer 10, the size of the wide-angle scanning ultra-wideband antenna unit is further reduced while achieving wide-angle scanning matching, thereby achieving a compact design. In other words, this design achieves wide-angle scanning matching at a lower profile.

[0055] In an optional embodiment of the present invention, Figure 1 As shown, the circuit board also includes: a capacitively coupled dipole antenna 17 for ultra-wideband radiation.

[0056] The circuit board also includes: a C-shaped plug-in coupling capacitor 18; in the dual-polarized plug-in antenna substrate 12, the opening of the C-shaped plug-in coupling capacitor 18 on one circuit board faces the wide-angle matching dielectric layer 10, and the opening of the C-shaped plug-in coupling capacitor 18 on the other circuit board faces the bottom plate 11. The periodic structure formed by the capacitively coupled dipole antenna 17 for ultra-wideband radiation and the C-shaped plug-in coupling capacitor 18 is actually a capacitively coupled dipole antenna.

[0057] The C-shaped plug-in coupling capacitor 18 includes a plurality of periodically arranged C-shaped metal structures, and the C-shaped metal structures form capacitive coupling by plug-in, so as to provide additional capacitance effect and optimize the impedance characteristics of the antenna.

[0058] The capacitively coupled dipole antenna 17 is used as the main radiation unit, wherein the dipoles are connected by capacitive coupling to achieve ultra-wideband radiation characteristics, and the size and spacing of the dipoles are optimized to obtain the desired frequency response.

[0059] The FSS component 13 is disposed around the capacitively coupled dipole antenna 17 and includes periodically arranged frequency selection units for realizing frequency selection characteristics and improving the matching performance of the antenna's tapered balun 15 .

[0060] The resistive branches 14 are arranged on the radiation surface of the wide-angle scanning ultra-wideband antenna unit, and include a plurality of branch structures with specific impedance values, for providing impedance matching and suppressing surface wave propagation.

[0061] The gradient balun 15 is arranged in the feeding part of the wide-angle scanning ultra-wideband antenna unit, and adopts a gradient microstrip line structure to realize the gradient conversion and balanced-unbalanced conversion of impedance.

[0062] The circuit board further includes: a feeding structure 19; and the gradient balun 15 includes a microstrip line.

[0063] The feeding structure 19 is located below the tapered balun 15 and connected to the lower end of the microstrip line.

[0064] The feeding structure 19 is arranged at the input end of the gradient balun 15 to realize impedance matching conversion from the microstrip line to the coaxial line, and a gradient transition structure is adopted to minimize conversion loss.

[0065] Specifically, in the embodiments of the present invention, Figure 1 As shown, the circuit board includes a FSS wide-angle matching layer 16, a capacitive coupling dipole antenna 17, a C-shaped plug-in coupling capacitor 18, an FSS component 13, a resistive branch 14, a gradient balun 15, and a feeding structure 19 in the direction from the wide-angle matching dielectric layer 10 to the bottom plate 11. The feeding structure 19 is a microstrip line to coaxial feeding structure. The length extension direction of the microstrip line is the direction from the wide-angle matching dielectric layer 10 to the bottom plate 11.

[0066] It should be noted that the capacitive coupling dipole antenna 17 may be designed in various forms, which are not limited in the embodiments of the present invention.

[0067] In an optional embodiment of the present invention, the wide-angle scanning ultra-wideband antenna unit further includes: a grounding column.

[0068] The FSS component 13 and / or the FSS wide-angle matching layer 16 are connected to the grounding column.

[0069] Specifically, in the embodiment of the present invention, the FSS component 13 and / or the FSS wide-angle matching layer 16 are connected to the grounding post for grounding, so that the wide-angle scanning ultra-wideband antenna unit can be improved.

[0070] In an optional embodiment of the present invention, the base plate 11 is a metal base plate; and the circuit board is a PCB board.

[0071] Specifically, in the embodiment of the present invention, by introducing a metal base plate as the antenna main body structure, its mechanical strength and structural stability are cleverly improved, thereby making it more practical in actual engineering applications.

[0072] It should be noted that the metal base plate may contain structures and screw holes for supporting the above structures, threads and other structures for connecting joints. The connecting joints actually adopt SSMP specification structures, and other coaxial joint structures may also be used for interconnection design. The joints and microstrip lines are connected by welding technology.

[0073] From the above description, it can be seen that the wide-angle scanning ultra-wideband antenna unit provided by the embodiment of the present invention, by introducing a metal base plate as the antenna main body structure, cleverly improves its mechanical strength and structural stability, so that it has stronger practicality in actual engineering applications; the feeding layer part adopts the optimized exponential segmented feeding surface structure (FSS) balun technology, which not only effectively increases the bandwidth, but also simplifies the manufacturing process and reduces the production cost, reflecting the effective control of manufacturing costs while ensuring performance. An ultra-wideband, low-profile, high-mechanical-strength dual-polarization tightly coupled antenna unit based on exponential gradient balun and FSS technology is realized.

[0074] It should be noted that, in the embodiment of the present invention, the FSS component 13, the resistive branch 14, the gradient balun 15 and the feeding structure 16 constitute the feeding layer part of the wide-angle scanning ultra-wideband antenna unit.

[0075] It should be further explained that the matching structure composed of the FSS component 13, the resistive branch 14 and the gradient balun in the embodiment of the present invention can be replaced by a structure based on Klopfenstein, but the profile of the Klopfenstein structure will be relatively high. The WAIN matching layer based on the combination of the FSS wide-angle matching layer 16 and the wide-angle matching dielectric layer 10 in the embodiment of the present invention can be replaced by a suspended FSS.

[0076] The material of the wide-angle matching dielectric layer 10 includes but is not limited to polytetrafluoroethylene material, and the circuit board includes but is not limited to a circuit board made of Rogers 5880 board. The lateral size of the wide-angle scanning ultra-wideband antenna unit is not limited to 7.85mm×7.85mm. The height of the part of the wide-angle scanning ultra-wideband antenna unit that includes the wide-angle matching dielectric layer 10, the FSS wide-angle matching layer 16, the capacitively coupled dipole antenna 17, the C-shaped plug-in coupling capacitor 18, the FSS component 13, the resistive branch 14 and the gradient balun 15 is not limited to 12.5mm. The overall height of the wide-angle scanning ultra-wideband antenna unit is not limited to 16.9mm.

[0077] Based on the above embodiment of the present invention, another embodiment of the present invention further provides an antenna array, referring to Figure 2 , Figure 2 A schematic diagram of the structure of an antenna array provided in an embodiment of the present invention, referring to Figure 3 , Figure 3A schematic cross-sectional view of an antenna array provided by an embodiment of the present invention. The antenna array provided by an embodiment of the present invention comprises: a plurality of antenna units, wherein the antenna units are the wide-angle scanning ultra-wideband antenna units described in the above embodiment.

[0078] Specifically, in the embodiment of the present invention, the wide-angle scanning ultra-wideband antenna unit can be expanded as follows: Figure 2 The M×N array shown, M and N are positive integers, N ≥ 2, and M ≥ 2. Figure 4 , Figure 4 A method provided by an embodiment of the present invention Figure 2 Schematic diagram of the antenna array 2-18GHz standing wave simulation results; reference Figure 5 , Figure 5 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the antenna array 2-18GHz array radiation efficiency simulation results shown; reference Figure 6 , Figure 6 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the beam simulation results of the antenna array in the array scanning direction at 5GHz frequency; reference Figure 7 , Figure 7 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the beam simulation results of the antenna array in the array scanning direction at 8 GHz frequency; reference Figure 8 , Figure 8 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the beam simulation results of the antenna array in the array scanning direction at 11 GHz frequency; reference Fig. 9 , Fig. 9 A method provided by an embodiment of the present invention Figure 2 The schematic diagram of the beam simulation results of the antenna array in the array scanning direction at 14 GHz frequency; reference Fig.10 , Fig.10 A method provided by an embodiment of the present invention Figure 2 The diagram shows the beam simulation results of the antenna array in the array scanning direction at the 17 GHz frequency.

[0079] like Figure 4-Figure 10 As shown, within 2.5-19 GHz, the simulated active standing wave of the antenna array is less than 2.5; the antenna array can achieve wide-angle scanning coverage of up to ±60 degrees.

[0080] Based on the above embodiments of the present invention, another embodiment of the present invention further provides an electronic device, which includes the wide-angle scanning ultra-wideband antenna unit described in the above embodiments; or, the electronic device includes the antenna array described in the above embodiments.

[0081] The wide-angle scanning ultra-wideband antenna unit, antenna array and electronic device provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

[0082] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0083] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device that includes a series of elements is inherent to the elements, or also includes elements inherent to these processes, methods, articles or devices. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0084] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wide-angle scanning ultra-wideband antenna unit, characterized in that: The wide-angle scanning ultra-wideband antenna unit comprises: Wide angle matching dielectric layer and bottom plate arranged opposite to each other; A dual-polarization interdigital antenna substrate located between the wide-angle matching dielectric layer and the bottom plate; the dual-polarization interdigital antenna substrate comprises two interdigitated circuit boards, wherein the plane where the circuit boards are located is perpendicular to the plane where the wide-angle matching dielectric layer is located; The circuit board comprises: an FSS component, a resistive branch and a gradient balun; the FSS component and the resistive branch are used to adjust the performance parameters of the wide-angle scanning ultra-wideband antenna unit.

2. The wide-angle scanning ultra-wideband antenna unit according to claim 1, characterized in that: The circuit board also includes: a FSS wide angle matching layer; The FSS wide-angle matching layer contacts the wide-angle matching medium layer.

3. The wide-angle scanning ultra-wideband antenna unit according to claim 1, characterized in that: The circuit board also includes: Capacitively coupled dipole antenna for ultra-wideband radiation.

4. The wide-angle scanning ultra-wideband antenna unit according to claim 1, characterized in that: The circuit board also includes: a C-shaped plug-in coupling capacitor; In the dual-polarized plug-in antenna substrate, the opening of the C-shaped plug-in coupling capacitor on one circuit board faces the wide-angle matching dielectric layer, and the opening of the C-shaped plug-in coupling capacitor on the other circuit board faces the bottom plate.

5. The wide-angle scanning ultra-wideband antenna unit according to claim 1, characterized in that: The circuit board also includes: a feeding structure; The gradient balun includes a microstrip line; The feeding structure is located below the tapered balun and connected to the lower end of the microstrip line.

6. The wide-angle scanning ultra-wideband antenna unit according to claim 1, characterized in that: The wide-angle scanning ultra-wideband antenna unit also includes: A supporting structure for supporting the wide-angle matching dielectric layer, wherein the supporting structure and the wide-angle matching dielectric layer are integrally arranged.

7. The wide-angle scanning ultra-wideband antenna unit according to claim 2, characterized in that: The wide-angle scanning ultra-wideband antenna unit further includes: a grounding post; The FSS component and / or the FSS wide-angle matching layer is connected to the ground post.

8. The wide-angle scanning ultra-wideband antenna unit according to claim 1, characterized in that: The bottom plate is a metal bottom plate; The circuit board is a PCB board.

9. An antenna array, characterized in that: The antenna array comprises a plurality of antenna units, and the antenna units are the wide-angle scanning ultra-wideband antenna units according to any one of claims 1 to 8.

10. An electronic device, characterized in that: The electronic device comprises the wide-angle scanning ultra-wideband antenna unit according to any one of claims 1 to 8; Or, the electronic device includes the antenna array described in claim 9.

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