Metal waveguide array antenna and communication equipment

Abstract

The utility model provides a metal waveguide array antenna and communication equipment, and belongs to the technical field of communication, the metal waveguide array antenna comprises a metal antenna body, the metal antenna body has a preset thickness and a preset width, the preset thickness is related to the phase of an incident wave beam, and the preset width is related to the gain demand of the metal waveguide array antenna; the waveguide transmission array is arranged on the metal antenna body, the waveguide transmission array comprises a plurality of rectangular hole units, the sizes of the rectangular hole units located at different positions are different, and through the arrangement of the metal antenna body and the waveguide transmission array, beam shaping is carried out on cross-polarized terahertz beams, so that the beam shaping accuracy is improved. According to the invention, a low-profile, wide-bandwidth, low-sidelobe-level and high-gain outgoing beam can be accurately obtained, and the performance of wireless communication is greatly improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a metal waveguide array antenna and communication equipment. Background Art

[0002] Antennas are essential core components in wireless communications. In long-distance communications such as satellite communications and deep space, high-gain antennas with low profiles, wide bandwidths, and low sidelobe levels play an important role. Currently, long-distance communications generally use antennas such as parabolic antennas, lens antennas, and microstrip array antennas. However, parabolic antennas and lens antennas have the disadvantages of being large, high-profile, bulky, and beam scanning can only be achieved through mechanical rotation; microstrip array antennas have the disadvantages of narrow bandwidth, low efficiency, and high power consumption. That is, there are still major problems in long-distance communications. Therefore, designing a high-gain antenna with low profile, wide bandwidth, and low sidelobe level is an urgent problem to be solved. Utility Model Content

[0003] The main purpose of this application is to provide a metal waveguide array antenna, aiming to design a high-gain antenna with low profile, wide bandwidth and low sidelobe level to improve the performance gain of wireless communication.

[0004] In a first aspect, the present application provides a metal waveguide array antenna, the metal waveguide array antenna comprising:

[0005] A metal antenna body, wherein the metal antenna body has a preset thickness and a preset width, wherein the preset thickness is related to the phase of the incident beam, and the preset width is related to the gain requirement of the metal waveguide array antenna;

[0006] A waveguide transmission array, wherein the waveguide transmission array is arranged on the metal antenna body, and the waveguide transmission array comprises a plurality of rectangular hole units, and the rectangular hole units at different positions have different sizes;

[0007] Among them, the side length of the rectangular hole unit is determined by the frequency of the incident beam, the phase delay diagram, the first relationship table and the second relationship table; the phase delay diagram is determined by the wavelength of the incident beam, the position of the rectangular hole unit, and the distance between the signal source and the metal waveguide array antenna; the first relationship table is obtained based on the relationship between the side length of the rectangular hole and the phase delay; and the second relationship table is obtained based on the relationship between the side length of the rectangular hole and the phase delay.

[0008] In one embodiment, the rectangular hole unit includes a first side and a second side. When the incident beam is a single beam wave, the length of the first side ranges from 0.5λ to λ, and the length of the second side ranges from 0.5λ to λ, where λ is the wavelength of the incident beam.

[0009] In one embodiment, the rectangular hole unit includes a first side and a second side. When the incident beam is a double-beam wave, the length of the first side ranges from 0.5λ to f1 ~λ f1 , the length of the second side ranges from 0.5λ f2 ~λ f2 , the λ f1 is the wavelength of the first beam, the λ f2 is the wavelength of the second beam; or,

[0010] The length of the first side ranges from 0.5λ f2 ~λ f2 , the length of the second side ranges from 0.5λ f1 ~λ f1 .

[0011] In one embodiment, the rectangular hole units are arranged periodically, and the center distance between the rectangular hole units is T, where T is less than or equal to the wavelength of the incident beam.

[0012] In one embodiment, the metal antenna body is a metal antenna body made of alloy material or pure metal material.

[0013] In one embodiment, the preset thickness has a value range of λ to 10λ, where λ is the wavelength of the incident beam.

[0014] In one embodiment, the metal waveguide array antenna includes a circular antenna body or a square antenna body.

[0015] In one embodiment, the incident beam of the metal waveguide array antenna is provided by a linearly polarized feed source.

[0016] In one embodiment, the linear polarization feed source includes a horn source or a horn source plus a collimating lens.

[0017] In a second aspect, the present application also provides a communication device, including: the metal waveguide array antenna of an embodiment of the present application.

[0018] The present application provides a metal waveguide array antenna and a communication device, wherein the metal waveguide array antenna comprises: a metal antenna body, wherein the metal antenna body has a preset thickness and a preset width, wherein the preset thickness is related to the phase of an incident beam, and the preset width is related to the gain requirement of the metal waveguide array antenna; a waveguide transmission array, wherein the waveguide transmission array is arranged on the metal antenna body, and the waveguide transmission array comprises a plurality of rectangular hole units, wherein the sizes of the rectangular hole units at different positions are different; wherein the side length of the rectangular hole unit is determined by the frequency of the incident beam, a phase delay diagram, a first relationship table, and a second relationship table, wherein the phase delay diagram is determined by the wavelength of the incident beam, the position of the rectangular hole unit, and the distance between a signal source and the metal waveguide array antenna, wherein the first relationship table is obtained based on the relationship between the side length of the rectangular hole and the phase delay, and wherein the second relationship table is obtained based on the relationship between the side length of the rectangular hole and the phase delay. By setting up a metal antenna body and a waveguide transmission array, the orthogonally polarized terahertz beam is beamshaped, and a high-gain output beam with a low profile, wide bandwidth, and low sidelobe level can be accurately obtained, which greatly improves the performance of wireless communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of an implementation of a metal waveguide array antenna provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of a metal waveguide array antenna provided in an embodiment of the present application;

[0022] Figure 3 Another structural schematic diagram of the metal waveguide array antenna provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of another implementation of the metal waveguide array antenna provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of a rectangular hole unit provided in an embodiment of the present application;

[0025] Figure 6 Another schematic diagram of the structure of the rectangular hole unit provided in the embodiment of the present application;

[0026] Figure 7 A far-field radiation diagram of the metal waveguide array antenna provided in an embodiment of the present application;

[0027] Figure 8 Another far-field radiation diagram of the metal waveguide array antenna provided by an embodiment of the present application;

[0028] Fig. 9 A schematic diagram of the correlation between the main lobe gain size and main lobe direction and frequency of the metal waveguide array antenna provided in an embodiment of the present application;

[0029] Fig.10 Another schematic diagram of the correlation between the main lobe gain size and the main lobe direction and the frequency of the metal waveguide array antenna provided in an embodiment of the present application;

[0030] Fig.11 A schematic diagram of the structure of a communication device provided in an embodiment of the present application.

[0031] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] Please refer to Figure 1 , Figure 1 A schematic diagram of an implementation of a metal waveguide array antenna provided in an embodiment of the present application.

[0035] like Figure 1 As shown, the metal waveguide array antenna 100 includes: a metal antenna body 10 and a waveguide transmission array 20.

[0036] In one embodiment, if Figure 1 As shown, the metal antenna body 10 has a preset thickness and a preset width, the preset thickness is related to the phase of the incident beam, and the preset width is related to the gain requirement of the metal waveguide array antenna.

[0037] It should be noted that the metal waveguide array antenna 100 can be as follows: Figure 2 For the circular antenna shown in FIG. 1 , the preset width is the diameter of the metal antenna body 10. Figure 3As shown, the metal waveguide array antenna 100 can also be a square antenna, and the preset width is the side length of the metal antenna body 10 .

[0038] In one embodiment, if Figure 1 As shown, the waveguide transmission array 20 is disposed on the metal antenna body 10 , and the waveguide transmission array includes a plurality of rectangular hole units 201 , and the rectangular hole units 201 at different positions have different sizes.

[0039] In one embodiment, the side length of the rectangular aperture unit 201 is determined by the frequency of the incident beam, the phase delay diagram, the first relationship table and the second relationship table, the phase delay diagram is determined by the wavelength of the incident beam, the position of the rectangular aperture unit 201, and the distance between the signal source and the metal waveguide array antenna, the first relationship table is obtained based on the relationship between the side length of the rectangular aperture and the phase delay, and the second relationship table is obtained based on the relationship between the side length of the rectangular aperture and the phase delay. By beam shaping the orthogonally polarized terahertz beam through the metal waveguide array antenna, a high-gain outgoing beam with a low profile, wide bandwidth and low sidelobe level can be accurately obtained, greatly improving the performance of wireless communication.

[0040] In one embodiment, the metal antenna body is a metal antenna body made of alloy material or pure metal material. In other embodiments, the metal antenna body of the metal waveguide array antenna can also be a metal antenna body with a metal film coated on the surface of a non-metal material.

[0041] In one embodiment, if Figure 4 As shown, the incident beam of the metal waveguide array antenna 100 is provided by a linear polarization feed source 30, which includes a horn source or a horn source plus a collimating lens.

[0042] Exemplarily, the linear polarization feed source 30 outputs an incident beam, the incident beam is transmitted to the metal waveguide array antenna 100, and the waveguide transmission array 20 performs polarization transformation on the incident beam to generate an output beam that meets the requirements.

[0043] In one embodiment, if Figure 5 As shown, the rectangular hole unit 201 includes a first side 201a and a second side 201b. When the incident beam is a single beam wave, the length of the first side 201a ranges from 0.5λ to λ, and the length of the second side 201b ranges from 0.5λ to λ, where λ is the wavelength of the incident beam.

[0044] In one embodiment, the rectangular aperture unit 201 includes a first side 201a and a second side 201b. When the incident beam is a double-beam beam, the length of the first side 201a ranges from 0.5λ to f1 ~λ f1 , the length of the second side 201b ranges from 0.5λ f2~λ f2 ,λ f1 is the wavelength of the first beam, λ f2 is the wavelength of the second beam; or, the length of the first side 201a ranges from 0.5λ f2 ~λ f2 , the length of the second side 201b ranges from 0.5λ f1 ~λ f1 .

[0045] In one embodiment, the rectangular aperture units 201 are arranged periodically, and the center distance between the rectangular aperture units 201 is T, where T is less than or equal to the wavelength of the incident beam.

[0046] For example, Figure 6 As shown, the center distance between the rectangular hole unit 2011 and the rectangular hole unit 2012 is T.

[0047] In one embodiment, the number of the rectangular aperture units 201 in the waveguide transmission array 20 is 36.

[0048] In one embodiment, the preset thickness ranges from λ to 10λ, where λ is the wavelength of the incident beam. Exemplarily, the preset width is 48 mm±1 mm.

[0049] It should be noted that the incident beam can be set according to actual conditions, and the embodiments of the present application do not specifically limit this. For example, the incident beam can be a terahertz wave with a frequency of 0.03 to 10 THz, for example, a terahertz wave of 0.0972 THz or a terahertz wave of 0.14 THz.

[0050] In one embodiment, the phase delay of each rectangular hole unit in the waveguide transmission array can be determined by establishing a rectangular coordinate system with the center point of the waveguide transmission array, determining the position coordinates of each rectangular hole unit in the waveguide transmission array, and obtaining a preset phase delay formula, which is: in The phase delay at the point (x, y), λ is the wavelength of the incident beam, x is the coordinate value of the first direction in the rectangular coordinate system, y is the coordinate value of the second direction in the rectangular coordinate system, and f is the distance between the signal source and the metal waveguide array antenna. Substitute the position coordinates of the rectangular aperture unit, the wavelength of the incident beam, and the distance between the signal source and the metal waveguide array antenna into the preset phase delay formula to obtain the phase delay of the rectangular aperture unit; and calculate the phase delay of each rectangular aperture unit to obtain a phase delay diagram.

[0051] For example, Figure 1The metal waveguide array antenna shown in the figure is made of aluminum, the thickness of the metal antenna body is 48 mm, and the medium in the hole of each rectangular hole unit in the waveguide transmission array is air. The terahertz point light source of the x-polarized wave with a frequency of 0.14 THz and the y-polarized wave with a frequency of 0.0972 THz is incident normally from 5 cm away from the center of the metal waveguide array antenna. The size of each rectangular hole unit in the waveguide transmission array is set according to Table 1.

[0052] Table 1 (Unit: mm)

[0053] (1.584,1.832) (1.631,1.846) (1.671,1.856) (1.72,1.865) (1.805,1.885) (1.9,1.9) (1.583,1.641) (1.627,1.653) (1.667,1.663) (1.718,1.674) (1.799,1.69) (1.891,1.703) (1.583,1.528) (1.623,1.535) (1.663,1.54) (1.715,1.548) (1.792,1.555) (1.884,1.563) (1.583,1.429) (1.621,1.433) (1.66,1.437) (1.712,1.443) (1.787,1.449) (1.876,1.455) (1.582,1.352) (1.618,1.357) (1.657,1.361) (1.71,1.366) (1.782,1.373) (1.872,1.379) (1.581,1.298) (1.616,1.301) (1.655,1.304) (1.708,1.308) (1.779,1.31) (1.868,1.316)

[0054] The x-polarized wave with a frequency of 0.14THz and the y-polarized wave with a frequency of 0.0972THz are injected into the metal waveguide array antenna. The x-polarized wave with a frequency of 0.14THz is generated by the metal waveguide array antenna as follows Figure 7 The one-dimensional far-field radiation diagram is shown in Figure 1. The y-polarized wave of 0.0972 THz is generated by the metal waveguide array antenna. Figure 8 The one-dimensional far-field radiation diagram is shown in the figure. When the incident wave is 0.14THz, the main lobe is oriented toward θ=0°, the peak gain is 32dBi, which is about 19dB higher than the gain of the side lobe, and the 3dB lobe width is 4.4°. When the incident wave is 0.0972THz, the main lobe is oriented toward θ=20°, the peak gain is 28dBi, which is about 21dB higher than the gain of the side lobe, and the 3dB lobe width is 5.7°. Figure 7 and Figure 8 It can be seen that the generated output beam has the characteristics of high gain and low sidelobe level.

[0055] For example, the main lobe gain size and main lobe orientation of the x-polarized wave at 0.14 THz are related to the frequency as follows: Fig. 9 As shown in the figure, the main lobe gain size and main lobe direction of the y-polarized wave at 0.0972 THz are related to the frequency as shown in the figure. Fig.10 As shown. Fig. 9 and 10 It can be seen that the outgoing beam generated by the metal waveguide array antenna has the characteristics of high gain and low sidelobe level.

[0056] The metal waveguide array antenna in the embodiment of the present application directly suppresses the size of the side lobes in the radiation direction by avoiding the main maximum of each order of diffraction, thereby achieving low sidelobe level and high gain performance for orthogonally polarized dual-frequency terahertz waves.

[0057] Please refer to Fig.11 , Fig.11 A schematic diagram of the structure of a communication device provided in an embodiment of the present application.

[0058] like Fig.11 As shown, the communication device 200 includes a metal waveguide array antenna 201 .

[0059] The communication device 200 includes but is not limited to base stations, satellites and other devices.

[0060] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A metal waveguide array antenna, characterized in that: The metal waveguide array antenna comprises: A metal antenna body, wherein the metal antenna body has a preset thickness and a preset width, wherein the preset thickness is related to the phase of the incident beam, and the preset width is related to the gain requirement of the metal waveguide array antenna; A waveguide transmission array, wherein the waveguide transmission array is arranged on the metal antenna body, and the waveguide transmission array comprises a plurality of rectangular hole units, and the rectangular hole units at different positions have different sizes; Among them, the side length of the rectangular hole unit is determined by the frequency of the incident beam, the phase delay diagram, the first relationship table and the second relationship table; the phase delay diagram is determined by the wavelength of the incident beam, the position of the rectangular hole unit, and the distance between the signal source and the metal waveguide array antenna; the first relationship table is obtained based on the relationship between the side length of the rectangular hole and the phase delay; and the second relationship table is obtained based on the relationship between the side length of the rectangular hole and the phase delay.

2. The metal waveguide array antenna according to claim 1, characterized in that: The rectangular hole unit includes a first side and a second side. When the incident beam is a single beam wave, the length of the first side ranges from 0.5λ to λ, and the length of the second side ranges from 0.5λ to λ, where λ is the wavelength of the incident beam.

3. The metal waveguide array antenna according to claim 1, characterized in that: The rectangular hole unit includes a first side and a second side. When the incident beam is a double-beam wave, the length of the first side has a value range of 0.5λ. f1 ~λ f1 , the length of the second side ranges from 0.5λ f2 ~λ f2 , the λ f1 is the wavelength of the first beam, the λ f2 is the wavelength of the second beam; or, The length of the first side is in the range of 0.5λ f2 ~λ f2 , the length of the second side ranges from 0.5λ f1 ~λ f1 .

4. The metal waveguide array antenna according to claim 1, characterized in that: The rectangular hole units are arranged periodically, and the center distance between the rectangular hole units is T, where T is less than or equal to the wavelength of the incident beam.

5. The metal waveguide array antenna according to claim 1, characterized in that: The metal antenna body is a metal antenna body made of alloy material or pure metal material.

6. The metal waveguide array antenna according to claim 1, characterized in that: The preset thickness has a value range of λ to 10λ, where λ is the wavelength of the incident beam.

7. The metal waveguide array antenna according to claim 1, characterized in that: The metal waveguide array antenna includes a circular antenna body or a square antenna body.

8. The metal waveguide array antenna according to claim 1, characterized in that: The incident beam of the metal waveguide array antenna is provided by a linearly polarized feed source.

9. The metal waveguide array antenna according to claim 8, characterized in that: The linear polarization feed source includes a horn source or a horn source plus a collimating lens.

10. A communication device, characterized in that: The communication device comprises the metal waveguide array antenna according to any one of claims 1 to 9.

Images