CN119447771B - Antenna assembly and antenna array - Google Patents
Antenna assembly and antenna arrayInfo
- Publication number
- CN119447771B CN119447771B CN202310960528.2A CN202310960528A CN119447771B CN 119447771 B CN119447771 B CN 119447771B CN 202310960528 A CN202310960528 A CN 202310960528A CN 119447771 B CN119447771 B CN 119447771B
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- antenna assembly
- radiation
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- radiating
- metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
本申请公开一种天线组件以及天线阵列，其中，所述天线组件包括辐射单元以及金属件，所述辐射单元包括辐射片；所述金属件设置在所述辐射片的外周，用以被所述辐射片激励。本发明旨在提出一种宽波束天线。
This application discloses an antenna assembly and an antenna array, wherein the antenna assembly includes a radiating element and a metal component, the radiating element including a radiating plate; the metal component is disposed on the outer periphery of the radiating plate for being excited by the radiating plate. The present invention aims to provide a wide-beam antenna.
Description
Technical Field
The application relates to the technical field of antennas, in particular to an antenna assembly and an antenna array.
Background
The space-space integrated networking has become the necessary trend of the future mobile communication development, and space-base-satellite communication is an important component of the space-space integrated networking. The goal of space-to-ground integration networking is to achieve global coverage, thus requiring the placement of enough satellites while requiring a single satellite to have a large enough coverage area. The satellite always keeps moving state when in orbit, so the satellite antenna is required to have beam scanning capability, generate staring beam and serve a fixed area. Therefore, the satellite antenna needs to have wide angle (+ -60 deg.) scanning capability, and the gain is reduced by 4-5dB when the antenna array of the conventional antenna is scanned to + -60 deg.. In practical application, the propagation distance of the signal is increased and the path loss is increased during the large-angle scanning, so that the gain is not reduced during the large-angle scanning, and the quality of satellite communication during the large-angle scanning can be ensured even if the gain is higher than the 0-degree directional gain.
Based on the above, the invention provides a wide beam antenna, which can effectively reduce the gain loss of the array for scanning at a large angle by widening the beam width of a unit.
Disclosure of Invention
The invention mainly aims to provide an antenna assembly and an antenna array, and aims to provide a wide-beam antenna which can effectively reduce gain loss of array wide-angle scanning.
To achieve the above object, the present invention provides an antenna assembly, wherein the antenna assembly includes:
a radiation unit including a radiation sheet, and
And the metal piece is arranged on the periphery of the radiation sheet and is used for being excited by the radiation sheet.
The invention further provides an antenna array, wherein the antenna array comprises a plurality of antenna assemblies arranged in an array, the antenna assemblies comprise radiating units and metal pieces, the radiating units comprise radiating sheets, and the metal pieces are arranged on the periphery of the radiating sheets and used for being excited by the radiating sheets.
According to the technical scheme, the metal piece is arranged on the periphery of the radiation piece of the radiation unit, the electromagnetic wave radiated by the radiation piece excites the metal piece, so that the metal piece can generate a direction pattern protruding towards the radiation direction of the radiation piece on the periphery of the radiation piece, the middle part of the radiation piece is provided with a direction pattern protruding towards the radiation direction of the radiation piece, the direction pattern generated by the metal piece is overlapped with the direction pattern generated by the radiation piece, the beam width of the radiation piece towards one side of the metal piece is improved, a wide beam direction pattern is formed, the requirement of scanning at a large angle and low gain loss is met when the radiation piece is applied to a satellite antenna, and satellite communication quality during large-angle scanning of the satellite antenna is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective half-sectional view of a first embodiment of an antenna assembly according to the present invention;
Fig. 2 is a schematic perspective exploded view of the antenna assembly of fig. 1;
Fig. 3 is a schematic perspective semi-cutaway view of a portion of the structure of a second embodiment of an antenna assembly provided by the present invention;
fig. 4 is a schematic perspective exploded view of a portion of the structure of the antenna assembly of fig. 3;
FIG. 5 is a schematic perspective view of a first embodiment of a metal body and a portion of a mating component provided by the present invention;
FIG. 6 is a schematic perspective view of a second embodiment of a metal body and a portion of a mating component provided by the present invention;
FIG. 7 is a schematic perspective view of a third embodiment of a metal body and a portion of a mating component provided by the present invention;
FIG. 8 is a schematic perspective view of a fourth embodiment of a metal body and a portion of a mating member provided by the present invention;
FIG. 9 is a schematic perspective view of an embodiment of a radiation patch according to the present invention;
FIG. 10 is a schematic view of a three-dimensional semi-cutaway view of a radiation patch and parasitic radiation patch and partial mating structure provided by the present invention;
FIG. 11 is a schematic perspective view of an embodiment of a parasitic radiator according to the present invention;
FIG. 12 is a schematic view of a dielectric body according to a first embodiment of the present invention in a partially mated configuration;
FIG. 13 is a schematic view of a second embodiment of a dielectric body and a partial mating structure according to the present invention;
FIG. 14 is a schematic view of a dielectric cap according to a first embodiment of the present invention in partial engagement;
FIG. 15 is a schematic view in perspective and semi-section of a second embodiment of a dielectric cap and partial mating structure provided by the present invention;
FIG. 16 is a schematic view in perspective and semi-cutaway of a third embodiment of a dielectric cap and partial mating structure provided by the present invention;
FIG. 17 is a schematic view in perspective and semi-cutaway of a fourth embodiment of a dielectric cap and partial mating structure provided by the present invention;
fig. 18 is a schematic perspective view of an antenna array according to an embodiment of the present invention;
fig. 19 is a schematic diagram of a first embodiment of an architecture connection manner of an antenna array according to the present invention;
fig. 20 is a schematic diagram of a second embodiment of an architecture connection manner of an antenna array according to the present invention;
fig. 21 is a schematic standing wave curve of a first embodiment of an antenna assembly according to the present invention;
fig. 22 is a schematic diagram showing an axial ratio versus frequency curve of a first embodiment of an antenna assembly according to the present invention;
fig. 23 is a schematic diagram of a directional diagram of a first embodiment of an antenna assembly according to the present invention;
Fig. 24 is a schematic diagram showing an axial ratio versus angle curve of a first embodiment of an antenna assembly according to the present invention;
Fig. 25 is a schematic diagram of a directional diagram of a second embodiment of an antenna assembly according to the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present invention), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The space-space integrated networking has become the necessary trend of the future mobile communication development, and space-base-satellite communication is an important component of the space-space integrated networking. The goal of space-to-ground integration networking is to achieve global coverage, thus requiring the placement of enough satellites while requiring a single satellite to have a large enough coverage area. The satellite always keeps moving state when in orbit, so the satellite antenna is required to have beam scanning capability, generate staring beam and serve a fixed area. Therefore, the satellite antenna needs to have wide angle (+ -60 deg.) scanning capability, and the gain is reduced by 4-5dB when the antenna array of the conventional antenna is scanned to + -60 deg.. In practical application, the propagation distance of the signal is increased and the path loss is increased during the large-angle scanning, so that the gain is not reduced during the large-angle scanning, and the quality of satellite communication during the large-angle scanning can be ensured even if the gain is higher than the 0-degree directional gain.
Based on the above, the invention provides a wide beam antenna, which can effectively reduce the gain loss of the array for scanning at a large angle by widening the beam width of a unit.
In view of this, the present invention provides an antenna assembly, and fig. 1 to 16 are exemplary embodiments of the antenna assembly provided by the present invention, and the antenna assembly will be described below with reference to the specific drawings.
Referring to fig. 1, the antenna assembly 100 includes a radiating element 1 and a metal member 2, wherein the radiating element 1 includes a radiating patch 11, and the metal member 2 is disposed on an outer periphery of the radiating patch 11 and is excited by the radiating patch 11.
According to the technical scheme of the application, the metal piece 2 is arranged on the periphery of the radiation piece 11 of the radiation unit 1, and the metal piece 2 is excited by electromagnetic waves radiated by the radiation piece 11, so that the metal piece 2 can generate a direction pattern protruding towards the radiation direction of the radiation piece 11 on the periphery of the radiation piece 11, the middle part of the radiation piece 11 generates a direction pattern protruding towards the radiation direction of the radiation piece, the direction pattern generated by the metal piece 2 is overlapped with the direction pattern generated by the radiation piece 11, so that the beam width of the radiation piece 11 towards one side of the metal piece 2 is improved, a wide beam direction pattern is formed, the requirement of low gain loss in large-angle scanning is met when the antenna is applied to a satellite antenna, and the satellite communication quality in large-angle scanning of the satellite antenna is ensured. It should be noted that, in the present application, the radiating element 1 may be a circularly polarized radiating element 1, or may be a linearly polarized radiating element 1, where the polarization characteristic of the antenna is defined by the spatial orientation of the electric field intensity vector of the electromagnetic wave radiated by the antenna in the maximum radiation direction, and the polarized types are divided into linear polarization, circular polarization and elliptical polarization by the motion track of the vector end of the electric field intensity vector, where the linear polarization is divided into horizontal polarization and vertical polarization, and the circular polarization is divided into left-hand circular polarization and right-hand circular polarization, where the elliptical polarization has an axial ratio of infinity, i.e., linear polarization, and an axial ratio of 1, i.e., circular polarization, and it is understood that, in the practical setting process, the axial ratio is difficult to reach 1, so the circularly polarized antenna described in the art is generally an elliptical polarized antenna with a better axial ratio characteristic. The radiation unit 1 in the present application can obtain the beneficial effects brought by the structure of the antenna assembly 100 provided by the present application by circular polarization or linear polarization, but the present application aims at satellite application, faraday rotation occurs when electromagnetic waves pass through an ionosphere, and in order to avoid polarization mismatch, most satellite communication adopts circular polarization, the radiation unit 1 in the present application mainly adopts the circular polarization radiation unit 1, so the following structural function description mainly uses the radiation unit 1 as the circular polarization radiation unit 1 for specific explanation.
It should be understood that the above technical effect may be achieved by disposing the metal member 2 on the outer periphery of the radiation piece 11, so the metal member 2 may be disposed in various manners, including, but not limited to, at least one metal body 21 disposed on the outer periphery of the radiation piece 11 and a metal ring 22 surrounding the radiation piece 11, and in particular, the present application provides four embodiments of the metal member 2, referring to fig. 5, in the first embodiment of the metal member 2, the metal member 2 includes a plurality of metal bodies 21 disposed along the outer periphery of the radiation piece 11, and it should be noted that the plurality of metal bodies 21 may be distributed along the circumferential direction of the radiation piece 11, or may be disposed only on one side of the radiation piece 11, and generally, the antenna assembly 100 is configured in a space-symmetric manner, and the plurality of metal bodies 21 are disposed in a structure uniformly distributed as shown in fig. 5. In addition, the structure and shape of the metal piece 2 are not limited, and may be a metal patch or a metal cylinder, and the cross-sectional shape of the metal piece 2 may be a circle, or a square, or a polygonal structure, specifically, in this embodiment, that is, in the first implementation of the metal piece 2, the metal piece 2 is selected to have a cylindrical structure, so that the direction diagram generated by the metal piece 2 after being excited by the radiation sheet 11 is spatially symmetrical.
Referring to fig. 6, in the second embodiment of the metal member 2, the metal member 2 includes a metal ring 22 extending along the circumferential direction of the radiation piece 11. In order to improve the situation that the space between the metal bodies 21 is smaller, but obviously the structure is complicated and the forming cost is high, in this embodiment, the metal piece 2 is directly arranged as the metal ring 22 extending along the circumferential direction of the radiation sheet 11, and the metal ring 22 is arranged in a closed loop to completely cover the circumferential direction of the radiation sheet 11, so that the annular convex pattern with the concave middle part is generated after the metal ring 22 is excited, and the annular convex pattern with the convex middle part is superimposed with the circumferential direction of the radiation sheet 11, so that the wide beam pattern can be generated in the circumferential direction of the radiation sheet 11, thereby meeting the use requirement, and simultaneously, the good axial ratio characteristic can be realized within a wide angle (+ -60 DEG) when the metal ring 22 is circularly polarized and excited by circularly polarized radiation of the radiation sheet 11. It should be noted that the shape of the metal ring 22 is not limited as well, and may be circular, square, or polygonal, and in this embodiment, circular is provided, and the same effect as described above is achieved, and a spatially symmetrical pattern is also produced.
Furthermore, the present application proposes a third embodiment based on the second embodiment of the metal part 2, referring to fig. 7, the circumferential coverage rate of the metal ring 22 structure on the radiation piece 11 is higher than that of the metal body 21, and the metal ring 22 structure is a closed ring structure in the second embodiment of the metal part 2, so as to achieve the optimal effect, and the manufacturing and shaping cost is low, but undeniable, there may be a design need, and the metal ring 22 needs to be designed into an open ring structure, namely, as in the third embodiment of the metal part 2 described in fig. 7, the circumference of the metal ring 22 is provided with a partition, which can also achieve the effect of widening the beam width required by the present application. Therefore, the above embodiments of the metal member 2 can satisfy the effect of widening the beam width required by the present application, and the practical choice is mainly based on the requirement, which is not limited herein.
In addition, on the basis of the structure of the metal ring 22, the metal ring 22 may be provided with a slot 23, which does not partition the metal ring 22, so as not to affect the stimulated generation of a corresponding direction diagram by the metal ring 22, and referring to fig. 8, and the fourth embodiment of the metal piece 2 is provided in the application, which is that on the basis of the metal ring 22, the slot 23 is provided, on the basis of the direction diagram generated by the metal ring 22, the material consumption of the metal ring 22 is reduced, the cost is reduced, and the mass of the metal ring 22 is reduced at the same time, so that the satellite load is reduced for the satellite service environment, and the practicability is improved.
Furthermore, the edge of the radiation piece 11 is provided with a first slot 111 extending towards the middle thereof. Specifically, the shape and structure of the radiation sheet 11 are not limited, that is, the radiation sheet 11 may be configured as a circle, a square, a polygon, etc., and referring to fig. 9, in this embodiment, the radiation sheet 11 is configured as a circle to generate a spatially symmetrical pattern. On this basis, the edge of the radiation piece 11 is provided with the first slot 111, so that the current flowing path on the radiation piece 11 along the edge thereof is lengthened, so that the radiation piece 11 which is equivalent to the radiation piece 11 with a larger size and is not provided with the first slot 111 is provided, the effect of improving the current path without increasing the size of the radiation piece 11 is realized, and the miniaturization of the radiation piece 11 is realized. Note that the number and shape of the first grooves 111 are not limited, and the effect of increasing the current path may be achieved, for example, the first grooves 111 may be provided in a cross shape, a T shape, or the like, and the number thereof may be provided only in one or more. Specifically, in this embodiment, a plurality of first slots 111 are formed along the circumferential direction of the radiation sheet 11, so that on one hand, more first slots 111 are provided to further increase the current path, and on the other hand, a plurality of first slots 111 are provided, and the plurality of first slots 111 are uniformly distributed along the circumferential direction of the radiation sheet 11, so as to ensure that the radiation sheet 11 generates a spatially symmetrical pattern.
In addition, the forming and mounting modes of the radiation sheet 11 are not limited in the application, so that the metal piece 2 can be ensured to be positioned at the periphery of the radiation sheet 11, and the radiation sheet 11 can normally radiate electromagnetic waves, so that the functional requirements can be met. Specifically, in the first embodiment of the antenna assembly 100, referring to fig. 1 to 2, the radiating unit 1 further includes a first substrate 12, the radiating sheet 11 includes a first metal layer 11a disposed on the first substrate 12, the radiating sheet 11 is load-bearing mounted on the first substrate 12, where the radiating sheet 11 may be configured as a separate metal sheet structure and fixed on the first substrate 12 by an additional fixing structure, the fixing structure includes a supporting structure or an adhesive structure, and the radiating sheet 11 may be formed by plating a metal coating on the surface of the first substrate 12 by a metal coating process, in this embodiment, the first substrate 12 is configured as a plastic material, and by integral injection molding, the light-weight characteristic of the radiating sheet 11 is obtained, and at the same time, the radiating sheet 11 is manufactured by a plastic surface metallization process as a plating substrate, and the specific implementation processes include, but are not limited to, an LDS (LASER DIRECT Structurin, laser direct forming) plating process, a selective electrochemical plating process, a magnetron sputtering process, an LAP (LASER ACTIVATING PLATING), a metal foil, and a metal foil, which are suitable for a satellite antenna with a simple and a large-scale antenna with a reduced metal-emission-scale, and a large-scale antenna with a light-emission antenna.
Specifically, in the second embodiment of the antenna assembly 100, referring to fig. 3 to 4, the substrate is not disposed in the radiating unit 1, the radiating sheet 11 is configured as an independent metal sheet structure, and the radiating sheet 11 is suspended between the metal pieces 2 through a fixing structure, specifically, the fixing structure may be a bracket that is erected between the metal pieces 2 and the radiating sheet 11, or may be a bracket that is erected between the radiating sheet 11 and structures in other directions, and the bracket is not specifically shown in the drawings, and is not limited in essence here, so that the function of the radiating sheet 11 may be ensured.
Furthermore, referring to fig. 10, the radiation unit 1 further includes a parasitic radiation patch 13 located at a radiation side of the radiation patch 11, and the parasitic radiation patch 13 is spaced apart from and coupled to the radiation patch 11. By means of the arrangement, the radiating sheet 11 and the parasitic radiating sheet 13 in the laminated structure can respectively generate a resonant frequency, the parasitic radiating sheet 13 and the radiating sheet 11 can resonate at different frequencies by tuning the size of the parasitic radiating sheet 13, and further the characteristic of widening the frequency band is achieved, the parasitic radiating sheet 13 is excited by the radiating sheet 11 and keeps the same polarization mode with the radiating sheet 11, and therefore good axial ratio characteristics can be achieved in a wider impedance frequency band width aiming at the circular polarization radiation mode.
Further, the metal member 2 extends to the outer periphery of the parasitic radiation patch 13 to be excited by the parasitic radiation patch 13. The metal piece 2 may be excited by the radiation piece 11 alone, that is, the height of the metal piece 2 may not need to extend to the periphery of the parasitic radiation piece 13, and the effect that the pattern generated by excitation thereof overlaps with the pattern generated by the radiation piece 11 to widen the beam width may be achieved.
In addition, referring to fig. 11, the shape and structure of the parasitic radiation sheet 13 are not limited as the radiation sheet 11, that is, the parasitic radiation sheet 13 may be configured as a circle, a square, a polygon, or the like, and in this embodiment, the parasitic radiation sheet 13 is correspondingly configured as a circle to generate a spatially symmetrical pattern. On this basis, the edge of the parasitic radiation sheet 13 is also provided with a second slot 131 extending toward the middle thereof, and substantially, the second slot 131 on the parasitic radiation sheet 13 and the first slot 111 on the radiation sheet 11 have the same structure and function, and based on the specific structural function description of the first slot 111 provided on the radiation sheet 11, the structural function of the second slot 131 on the parasitic radiation sheet 13 will not be described in detail herein, and reference is made to the first slot 111 on the radiation sheet 11. Of course, it should be noted here that the specific slot shapes and slot numbers of the first slot 111 and the second slot 131 need not be identical, and may have the required functions.
Furthermore, the antenna assembly 100 comprises a dielectric body 3, which dielectric body 3 is located at the radiation side of the radiation piece 11. The dielectric body 3 is an electrical insulator that can be polarized by an externally applied electric field, the dielectric body 3 loads and changes transmission phases of electromagnetic waves in different radiation directions, specifically, after the electromagnetic waves in different angle directions emitted by the radiation sheet 11 pass through the dielectric body 3, the electromagnetic waves in different angle directions are different in phase due to inconsistent path lengths of the electromagnetic waves passing through the dielectric body 3, and finally, wide beam radiation characteristics are generated by superposition in free space. In addition, the dielectric body 3 is loaded without affecting the polarization, and good axial ratio characteristics in a wide angle range are maintained for the circular polarization radiation mode. The dielectric body 3 is a dielectric material, specifically a plastic material, including but not limited to PPS modified material, PPO modified material, LCP modified material, PEI modified material, and the like. The specific structure of the dielectric body 3 is not limited, and it is only necessary to ensure that it has a radiation direction located in the radiation sheet 11 to achieve the above-mentioned functions.
Specifically, referring to fig. 12, in the first embodiment of the dielectric body 3, the dielectric body 3 may be configured as a dielectric plate covering an end of the metal member 2 away from the radiation sheet 11, and the dielectric plate is mainly supported by the metal member 2, so as to implement the mounting and fixing of the dielectric body 3, so as to achieve the above-mentioned technical effects of the dielectric body 3. In addition, referring to fig. 13, in the second embodiment of the dielectric body 3, the dielectric body 3 includes a dielectric cover 31, and the dielectric cover 31 is covered on the radiation sheet 11. The dielectric cover 31 is mainly formed by a dielectric layer on the top of the dielectric cover 31, and the dielectric layer supports the dielectric cover 31 through the side wall of the dielectric cover 31 without being fixedly mounted on the metal piece 2, or vice versa, the metal piece 2 can be arranged to be positioned on the second metal layer 2a of the side wall of the dielectric cover 31, so that the metal piece 2 is supported by the dielectric cover 31 with lighter weight, and the mass of the metal piece 2 can be reduced as much as possible, namely, the second metal layer 2a positioned on the side wall of the dielectric cover 31 is formed, so that the overall mass of the antenna assembly 100 is reduced, and the antenna assembly is suitable for satellite communication light weight requirements. And the dielectric cover 31 is covered on the radiation piece 11 to facilitate positioning of the dielectric cover 31 and mounting operation of the dielectric body 3. Specifically, the cross-sectional shape of the dielectric cover 31 may be square, polygonal, etc. to achieve the desired functions, which is not limited herein, and in this embodiment, the dielectric cover 31 is cylindrically configured, so as to ensure symmetry of the pattern, and to achieve wide beam characteristics in all directions.
Further, the second metal layer 2a may be identical to or inconsistent with the above-described forming and mounting manner of the first metal layer 11a, that is, the second metal layer 2a may also be configured as a separate metal sheet structure, and is fixed to the dielectric cover 31 by an additional fixing structure, where the fixing structure includes a supporting structure or an adhesive structure, the second metal layer 2a may also be formed by plating a metal plating layer on a side wall surface of the dielectric cover 31 by a metal plating process to form the second metal layer 2a, specifically, the dielectric cover 31 is configured as a plastic material as described above, so that the plastic material has a light-weight characteristic, and meanwhile, as a plating substrate, the second metal layer 2a is manufactured by adopting a plastic surface metallization process, and specific implementation processes thereof include, but are not limited to, an LDS (LASER DIRECT Structurin, a laser direct forming) plating process, a selective electrochemical plating process, a magnetron vacuum plating process, an LAP (LASER ACTIVATING PLATING, a metal plating process after laser activation, a plastic surface metal foil, etc., so that the dielectric cover 31 is configured as a plastic material, so that the plastic material has a light-weight characteristic that the plastic surface metallization structure meets the plating process requirement, and the satellite antenna is further suitable for the satellite antenna has a light-weight characteristic, and the whole antenna array, and the antenna structure is further suitable for the antenna array. It is understood that the second metal layer 2a may be disposed on the inner side or the outer side of the dielectric cover 31, and the functional effect thereof is not affected, in this embodiment, the second metal layer 2a is disposed on the inner side of the dielectric cover 31, and the protection of the second metal layer 2a may be formed by the dielectric cover 31.
Further, referring to fig. 14, the radiating element 1 further includes a parasitic radiating patch 13 located on the radiating side of the radiating patch 11, the parasitic radiating patch 13 being spaced apart from and coupled to the radiating patch 11, and the parasitic radiating patch 13 includes a third metal layer 13a provided on the top wall of the dielectric cover 31. The parasitic radiation piece 13 is installed in a similar manner to the radiation piece 11, that is, the parasitic radiation piece 13 is installed on the dielectric cover 31 in a bearing manner, wherein the parasitic radiation piece 13 can be configured as an independent metal piece structure and is fixed on the dielectric cover 31 through an additional fixing structure, the fixing structure comprises a supporting structure or an adhesive structure, the parasitic radiation piece 13 configured as a metal piece structure can be embedded in the dielectric cover 31 through an embedding manner, the radiation piece 11 can be formed by plating a metal plating layer on the surface of the dielectric cover 31 through a metal plating process, in the embodiment, the dielectric cover 31 is made of a plastic material, the plating substrate meets the requirement of a plating process while the light-weight characteristic is obtained, the parasitic radiation piece 13 is manufactured through a plastic surface metallization process, and specific implementation processes of the parasitic radiation piece 13 comprise, but are not limited to, an LDS (LASER DIRECT Structurin, laser direct forming) plating process, a selective plating process, a magnetron sputtering vacuum plating process, an LAP (LASER ACTIVATING PLATING, a metal foil after activation process, a satellite antenna array and the like. It should be noted that the parasitic radiation sheet 13 may be plated on the outer side of the dielectric cover 31 or on the inner side of the dielectric cover 31, but when being plated on the inner side of the dielectric cover 31, the electromagnetic wave excited by the radiation sheet 11 to emit by the parasitic radiation sheet 13 will also pass through the dielectric cover 31 to have a wide beam radiation characteristic, so the embodiment mainly adopts a form of plating the parasitic radiation sheet 13 on the inner side of the dielectric cover 31.
In addition, it is understood that when the parasitic radiator 13 is fixed by a fixing structure, it is not necessarily fixed to the dielectric cover 31, but may be suspended and fixed to the metal part 2 by a fixing structure, but obviously, the plating process is more complicated than the above, the difficulty of forming and installing the structure is great, and the practicality is poor.
Specifically, a protruding region 311 is formed in the middle of the inner side of the top wall of the dielectric cover 31, and the third metal layer 13a is disposed on the protruding region 311. In order to facilitate the installation of the parasitic radiation piece 13, the protruding area 311 is formed in the middle of the inner side of the top wall of the dielectric cover 31, the structure form of the protruding area 311 is not limited, and may be a part of the structure protruding, or may be an integrally protruding boss formed as the protruding area 311, even when the part of the structure protrudes, the protruding area 311 may be arranged along the periphery of the parasitic radiation piece 13 to hold the parasitic radiation piece 13 in a metal sheet structure, and the protruding area 311 may limit the parasitic radiation piece 13, so as to perform the function of assisting the installation and the formation of the parasitic radiation piece 13, which is not limited herein, and is mainly based on the structure adopted by the parasitic radiation piece 13 and the integral assembly setting of the antenna assembly 100.
Further, referring to fig. 15, in the second embodiment of the dielectric cover 31, an annular groove 312 is formed at the inner periphery of the top wall of the dielectric cover 31, so that the protruding region 311 is formed at the inner middle of the top wall of the dielectric cover 31. In this embodiment, the parasitic radiation piece 13 is formed by metal plating, so the peripheral edge of the inner side of the top wall of the dielectric cover 31 is provided with the annular groove 312 to form the protruding region 311 with a raised middle portion, so that a height difference exists between the edge of the protruding region 311 and the bottom of the annular groove 312, so that the parasitic radiation piece 13 is formed by plating the protruding region 311, and the size of the parasitic radiation piece 13 is equivalently adjusted by adjusting the area of the protruding region 311, which has a simple structure and a good effect. Of course, when the parasitic radiation patch 13 is configured in a metal sheet structure, the protruding region 311 in the present embodiment can also play a role of edge positioning of the parasitic radiation patch 13, and has an effect of facilitating positioning and mounting of the parasitic radiation patch 13.
In addition, the metal member 2 is disposed inside the sidewall of the dielectric cap 31 and extends to the annular groove 312. The metal piece 2 is disposed on the inner side of the sidewall of the dielectric cover 31, and the metal piece 2 extends to the outer periphery of the parasitic radiation piece 13, which is not described in detail herein, and based on the annular groove 312 formed for forming the protruding region 311, the metal piece 2 may further extend into the annular groove 312 to exceed the height of the parasitic radiation piece 13, so as to ensure, on one hand, the coupling between the parasitic radiation piece 13 and the metal piece 2, and ensure that the metal piece 2 may be excited by the parasitic radiation piece 13, and on the other hand, the coupling amount between the parasitic radiation piece 13 and the metal piece 2 is improved.
Specifically, the metal member 2 includes a second metal layer 2a provided on a sidewall of the dielectric cap 31, and the second metal layer 2a extends to the annular groove 312. The arrangement of the metal piece 2 as the second metal layer 2a is also described in detail above, and will not be described in detail here, in this embodiment, the second metal layer 2a is extended into the annular groove 312, so as to achieve the above-mentioned functions of ensuring the coupling between the metal piece 2 and the parasitic radiation piece 13 and improving the coupling amount.
The dielectric body 3 has a dielectric body 3 main body disposed opposite to the radiation sheet 11, and the dielectric body 3 main body is disposed in a recess in a central region corresponding to the radiation sheet 11. The specific functions of the dielectric body 3 are described in detail above, that is, after the electromagnetic waves in different angular directions emitted by the radiation sheet 11 pass through the dielectric body 3, the electromagnetic wave phases in different angular directions are different due to inconsistent path lengths of the electromagnetic waves passing through the dielectric body 3, and finally, the electromagnetic waves are superimposed in free space to generate wide beam radiation characteristics. For example, when the electromagnetic wave emitted by the radiation sheet 11 perpendicular to the dielectric body 3 passes through the dielectric body 3, the path is shortest and is the thickness of the dielectric body 3, and the electromagnetic wave emitted by the radiation sheet 11 with a certain angle passes through the dielectric body 3, the path must exceed the electromagnetic wave perpendicular to the dielectric body 3, so as to form a wave path difference, generate the difference of electromagnetic wave phases in different angle directions, and finally generate the effect of wide beam radiation characteristic by superposition in free space. However, when the size of the dielectric body 3 is smaller than the size of the radiation sheet 11, the electromagnetic waves emitted by the radiation sheet 11 are almost perpendicular to the dielectric body 3, or the electromagnetic waves having a certain angle and passing through the dielectric body 3 have smaller angular deviation, so that the difference of the wave path difference between the two is smaller, and the effect of generating the wide beam radiation by superposition is poorer or even the beam cannot be widened. Therefore, in the present application, the middle region of the dielectric body 3 is provided with the recess to form the first region located in the middle of the dielectric body 3 and the second region located at the periphery of the first region, so that the thickness of the first region is smaller than that of the second region, and at this time, even if the angle difference of the electromagnetic wave passing through the first region and the second region is smaller, the wave path difference of the electromagnetic wave emitted by the radiation sheet 11 passing through the two regions can be increased, and the desired effect of expanding the wave beam can be ensured. It will be appreciated that the recess in the middle of the body of the dielectric body 3 may be either facing the radiation piece 11, referring specifically to the third embodiment of the dielectric cover 31 in fig. 16, or facing away from the radiation piece 11, referring specifically to the fourth embodiment of the dielectric cover 31 in fig. 17, which is not limited herein, and can perform the desired function. However, when the parasitic radiation sheet 13 is provided with a metal plating layer, it is necessary to ensure that the main body of the dielectric body 3 is flat towards one side of the radiation sheet 11, so that the parasitic radiation sheet 13 is plated and formed, so that the application mainly adopts a concave arrangement on one side of the main body of the dielectric body 3, which is away from the radiation sheet 11. It should be noted that the above-mentioned concave structure is not limited, but in order to ensure that the generated pattern is spatially symmetric, the above-mentioned concave structure needs to be provided as an annular structure, and in specific implementation, the above-mentioned concave structure may be a conical hollow, a parabolic hollow, a curved surface hollow formed by gradually changing indexes, or the like.
In addition, the radiating unit 1 further includes a ground plate 14 and a feeding system 15 disposed on a side of the ground plate 14 facing away from the radiating sheet 11, where the feeding system 15 is connected to a feeding point 112 of the radiating sheet 11 through a connecting piece 16, and the connecting piece 16 is disposed through the ground plate 14. The space between the ground plate 14 and the feeding system 15 may be not limited as the intrinsic structure required by the radiating element 1, in the present application, the feeding system 15 is disposed on a side of the ground plate 14 facing away from the radiating patch 11, and the radiating patch 11 is connected by penetrating the ground plate 14 through the connecting piece 16, so that, on one hand, the feeding system 15, the ground plate 14 and the radiating patch 11 are stacked, the space size is reduced, so as to reduce the volume of the antenna assembly 100, and on the other hand, the feeding system 15 and the radiating patch 11 are spaced by the ground plate 14, so as to avoid interference between the two, and improve the accuracy of the antenna assembly 100.
Further, a second substrate 17 is disposed between the power feeding system 15 and the ground plate 14, and the power feeding system 15 includes a fourth metal layer 15a disposed on the second substrate 17. In the first embodiment of the antenna assembly 100, referring to fig. 1 to 2, the second substrate 17 is disposed between the feeding system 15 and the ground plate 14, the feeding system 15 is disposed to be attached to the fourth metal layer 15a of the second substrate 17, and the fourth metal layer 15a is formed in a similar manner to the first metal layer 11a, the second metal layer 2a and the third metal layer 13a, which may also be configured as an independent metal sheet structure, fixed by an additional fixing structure, or may also be configured as a metal plating plated on the second substrate 17, and in this embodiment, the fourth metal layer 15a is plated on the second substrate 17 to achieve the same light weight effect, so as to be suitable for the satellite communication use requirement.
Further, at least two feeding points 112 are disposed on the radiation piece 11, and the feeding system 15 is connected to the two feeding points 112 through two connectors 16 respectively. By arranging a plurality of feed points 112, the stability of the phase center is improved.
It should be noted that, due to the characteristics of circular polarization, the antenna transceiver needs to adopt circular polarizations with different rotation directions, so that the antenna assembly 100 needs to perform dual circular polarization design, and for dual circular polarization design requirements, the radiation sheet 11 is provided with a plurality of feed points 112, so as to facilitate dual circular polarization design, and thus, by adopting dual circular polarizations, the antenna transceiver can be shared, and the antenna size can be reduced. Specifically, the feeding system 15 is a 3dB bridge, so as to realize dual-circular polarized radiation, when a signal is input from one feeding point 112, the antenna assembly 100 is in a first circular polarized radiation mode, and when a signal is input from the other feeding point 112, the antenna assembly 100 is in a second circular polarized radiation mode, so as to form a dual-circular polarized design. The first circular polarization radiation mode and the second circular polarization radiation mode adopt different circular polarization modes for receiving and transmitting, for example, when the first circular polarization radiation mode is a left-hand circular polarization mode, the second circular polarization radiation mode is a right-hand circular polarization mode, and when the first circular polarization mode is a right-hand circular polarization mode, the second circular polarization radiation mode is a left-hand circular polarization mode. The antenna assembly 100 is configured to transmit and receive in different circular polarization modes, i.e., a right circular polarization mode when transmitting in a left circular polarization mode, and a left circular polarization mode when transmitting in a right circular polarization mode.
Specifically, on the basis that the feeding system 15 is configured as a 3dB bridge, the feeding system 15 includes two input ports 151 and two output ports 152, where the two input ports 151 are used for accessing digital channels, and the two output ports 152 are respectively connected to the two feeding points 112 on the radiating patch 11 through one of the connectors 16. In this way, when the antenna assembly 100 is in the transmitting operation mode, a signal enters from one of the two input ports 151, a group of quadrature signals with 90 ° phase difference are generated through the power distribution and phase shift actions of the feed system 15, the quadrature signals are output by the two output ports 152, then the radiation piece 11 is fed through the connection piece 16 to make the radiation unit 1 emit electromagnetic waves, so as to realize space propagation of the signals, when the antenna assembly 100 is in the receiving operation mode, electromagnetic wave signals in free space are received by the radiation unit 1, mainly received by the radiation piece 11, transmitted to the output port 152 of the feed system 15 through the connection piece 16, synthesized by the signals of the feed system 15, and finally the signals are output to the radio frequency link through the input port 151.
In view of the foregoing, the present application mainly proposes two embodiments of the antenna assembly 100, please refer to fig. 1 and 2, which are a first embodiment of the antenna assembly 100, and refer to fig. 3 and 4, which are a second embodiment of the antenna assembly 100.
In the first embodiment of the antenna assembly 100, the first substrate 12, the dielectric cover 31 and the second substrate 17 are made of plastic materials, which has the advantage of light weight. The radiation patch 11, i.e. the first metal layer 11a, the parasitic radiation patch 13, i.e. the third metal layer 13a, the metal part 2, i.e. the second metal layer 2a, and the fourth metal layer 15a of the feed network are realized by plastic surface metallization. The partial size selection in this embodiment includes that the distance between the radiating patch 11 and the parasitic radiating patch 13 is 0.1λ, a bottom plate attached to the first substrate 12 is further formed at the bottom of the dielectric cover 31 to ensure the mounting stability of the dielectric cover 31, the side length of the bottom plate is 0.5λ, the height of the dielectric cover 31 is 0.25λ, the diameter is 0.45 λ, the height of the second metal layer 2a inside the dielectric cover 31 is 0.2λ, wherein the side length of the bottom plate of the dielectric cover 31 is 0.5λ, the caliber size of the antenna assembly 100 is 0.5λ, the antenna array 1000 is assembled at a distance of 0.5λ, no grating lobes are generated in the directional diagram of the antenna array 1000, the height of the dielectric cover 31 is 0.25λ, the diameter is 0.45, the phase difference of different angles is determined for realizing wide beam characteristics, the geometric dimension of the dielectric cover 31 is further determined, and the height of the second metal layer 2a of the dielectric cover 31 is determined to be optimally matched with the impedance characteristic in the direction of 0.2λ. The above dimensions are a set of embodiments given in this example, and are not limited to the actual dimensions, but may be adjusted in a certain manner to meet the technical effects required in the present application, and are not limited herein.
Tests were carried out on the basis of the first embodiment of the antenna assembly 100 according to the present application, in which the stacked structure of the radiating patch 11 and the parasitic radiating patch 13 is adopted to achieve an impedance bandwidth of 15%, and a standing wave curve is shown in fig. 21. And within the impedance bandwidth, the axial ratio is less than 2dB, and the axial ratio is plotted against frequency as shown in fig. 22. In the first embodiment of the antenna assembly 100 according to the present application, the dielectric cover 31 and the metal piece 2 are loaded to realize ultra-wide beam radiation characteristics, and the directional diagram curve is shown in fig. 23, where the 2GHz band 1.5dB bandwidth reaches about 168 °, the 3dB beam width reaches about 195 °, the 2.18GHz band 1.5dB bandwidth reaches about 190 °, and the 3dB beam width reaches about 214 °. Within + -60 deg., the axial ratio is less than 3dB, and the axial ratio is plotted against angle as shown in FIG. 24. The first embodiment of the antenna assembly 100 provided by the application has the characteristics of ultra-wide beam, can effectively reduce the gain drop during the wide-angle scanning of the array, and ensures good axial ratio characteristics in a wide angle range.
Compared with the first embodiment of the antenna assembly 100, the second embodiment of the antenna assembly 100 omits the dielectric materials such as the first substrate 12, the second substrate 17, and the dielectric body 3, and adopts an all-metal structure, the metal member 2 and the ground plate 14 are enclosed to form a radiation cavity, the radiation piece 11 and the parasitic radiation piece 13 are fixed on the metal member 2 by the above-described fixing structure so as to be suspended in the radiation cavity, the radiation piece 11 is electrically connected with the feeding system 15 disposed on the back side of the ground plate 14 by the connection piece 16, and the connection piece 16 and the feeding system 15 are not shown in fig. 3 or fig. 4. Specifically, the second embodiment of the antenna assembly 100 is different from the first embodiment of the antenna assembly 100 in that (1) the loading of the dielectric cover 31 is not performed in the second embodiment, so that the beam width is not as wide as that of the first embodiment, (2) the second embodiment adopts a form of suspending the radiation piece 11, which has higher radiation efficiency than the radiation piece 11 attached to the first substrate 12 in the first embodiment, (3) the first slot 111 is provided on the radiation piece 11 in the second embodiment, so as to achieve miniaturization of the radiation piece 11, (4) the metal piece 2 is directly connected to the ground plate 14 in the second embodiment, and the gain is reduced when the structure in the second embodiment is scanned at a large angle compared with the case that the metal piece 2 is spaced from the ground plate 14 by the first substrate 12 in the first embodiment. A pattern curve of a second embodiment of the antenna assembly 100 is shown in fig. 25.
Referring to fig. 18, the present invention further provides an antenna array 1000, where the antenna array 1000 includes a plurality of antenna assemblies 100 arranged in an array, and the specific structure of the antenna assemblies 100 refers to the above embodiment. Since the antenna array 1000 adopts all the technical solutions of all the embodiments, at least the beneficial effects of the technical solutions of the embodiments are provided, and will not be described in detail herein.
Referring to fig. 19, the radiating unit 1 includes a feeding system 15, the feeding system 15 is connected to a feeding point 112 on the radiating sheet 11 through a connecting piece 16, the feeding system 15 includes two input ports 151 and two output ports 152, and the two input ports 151 of the feeding system 15 of at least one antenna assembly 100 are connected to digital channels through a radio frequency link respectively. Fig. 19 illustrates a connection manner of the first embodiment of the architecture of the antenna array 1000, where two input ports 151 of each antenna assembly 100 are respectively connected to one radio frequency link, two input ports 151 are respectively connected to a transmitting and receiving link or a receiving and transmitting link, N antenna assemblies 100 correspond to N transmitting and receiving radio frequency links, N radio frequency links are connected to digital channels, and the number of digital channels is mainly determined by practical application requirements, which is not limited herein.
Referring to fig. 20, the radiation unit 1 includes a feeding system 15, the feeding system 15 is connected to a feeding point 112 on the radiation sheet 11 through a connecting piece 16, the feeding system 15 includes two input ports 151 and two output ports 152, and the input ports 151 corresponding to the feeding systems 15 of at least two antenna assemblies 100 are connected to a radio frequency link through a phase shift network system for integration and then connected to a digital channel. The input ports 151 corresponding to the antenna assemblies 100 are connected to a phase shift network, so that M phase shift networks are connected to a transmitting or receiving radio frequency link, and N transmitting and receiving radio frequency links are connected to a digital channel, that is, the antenna assemblies 100 are integrated into a radio frequency link after phase shifting through the phase shift network, and the number of radio frequency links and digital channels is mainly determined by practical application requirements, which is not limited herein.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (23)
1. An antenna assembly, comprising:
a radiation unit including a radiation sheet, and
The metal piece is arranged on the periphery of the radiation piece and is used for being excited by the radiation piece;
Wherein the antenna assembly further comprises a dielectric body located on the radiation side of the radiation sheet;
The dielectric body is provided with a dielectric body arranged opposite to the radiation sheet, and the dielectric body is concavely arranged in the middle area corresponding to the radiation sheet;
The metal piece comprises a metal ring extending along the circumference of the radiation piece;
the dielectric body comprises a dielectric cover, and the dielectric cover is covered on the radiation sheet;
the metal piece comprises a second metal layer arranged on the side wall of the dielectric cover.
2. The antenna assembly of claim 1, wherein the metal ring is in a closed loop arrangement.
3. The antenna assembly of claim 1, wherein the metal ring is slotted.
4. The antenna assembly of claim 1, wherein the radiating patch is provided with a first slot along an edge thereof extending toward a central portion thereof.
5. The antenna assembly of claim 4, wherein the first slot is formed with a plurality of slots along a circumference of the radiating patch.
6. The antenna assembly of claim 1, wherein the radiating element further comprises a first substrate, and the radiating patch comprises a first metal layer disposed on the first substrate.
7. The antenna assembly of claim 1, wherein the radiating element further comprises a parasitic radiating patch located on a radiating side of the radiating patch, the parasitic radiating patch being spaced apart from and coupled to the radiating patch.
8. The antenna assembly of claim 7, wherein the metallic member extends to an outer periphery of the parasitic radiating patch for excitation by the parasitic radiating patch.
9. The antenna assembly of claim 7, wherein the edge of the parasitic radiating patch is provided with a second slot extending toward a central portion thereof.
10. The antenna assembly of claim 9, wherein the second slot is open in plurality along a circumference of the parasitic radiating patch.
11. The antenna assembly of claim 1, wherein the radiating element further comprises a parasitic radiating patch on a radiating side of the radiating patch, the parasitic radiating patch being spaced apart from and coupled to the radiating patch;
The parasitic radiating patch includes a third metal layer disposed on a top wall of the dielectric cap.
12. The antenna assembly of claim 11, wherein the third metal layer is disposed inside a top wall of the dielectric cap.
13. The antenna assembly of claim 12, wherein a protruding region is formed in an inner middle portion of the top wall of the dielectric cap, the third metal layer being disposed in the protruding region.
14. The antenna assembly of claim 13, wherein an annular recess is formed at an inner periphery of the top wall of the dielectric cap such that the protruding region is formed at an inner middle portion of the top wall of the dielectric cap.
15. The antenna assembly of claim 14, wherein the second metal layer extends to the annular recess.
16. The antenna assembly of claim 1, wherein the radiating element comprises a circularly polarized radiating element.
17. The antenna assembly of claim 1, wherein the radiating element further comprises a ground plate and a feed system positioned on a side of the ground plate facing away from the radiating patch, the feed system is connected to the feed point of the radiating patch by a connector, and the connector is disposed through the ground plate.
18. The antenna assembly of claim 17, wherein a second substrate is disposed between the feed system and the ground plate, the feed system including a fourth metal layer disposed on the second substrate.
19. The antenna assembly of claim 18 wherein at least two feed points are provided on the radiating patch, the feed system being connected to the two feed points by two of the connectors, respectively.
20. The antenna assembly of claim 19 wherein the feed system includes two input ports for accessing digital channels and two output ports connected to two of the feed points on the radiating patch by a respective one of the connectors.
21. An antenna array comprising a plurality of antenna elements arranged in an array, the antenna elements being as claimed in any one of claims 1 to 20.
22. The antenna array of claim 21, wherein the radiating element comprises a feed system connected to a feed point on the radiating patch by a connector, the feed system comprising two input ports and two output ports;
The two input ports of the feed system of at least one of the antenna assemblies are respectively connected to the digital channel through a radio frequency link.
23. The antenna array of claim 21, wherein the radiating element comprises a feed system connected to a feed point on the radiating patch by a connector, the feed system comprising two input ports and two output ports;
The input ports corresponding to the feed systems of at least two antenna assemblies are connected into a radio frequency link through a phase-shifting network system for integration and then connected into a digital channel.
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| CN202310960528.2A CN119447771B (en) | 2023-07-31 | 2023-07-31 | Antenna assembly and antenna array |
| PCT/CN2024/107007 WO2025026134A1 (en) | 2023-07-31 | 2024-07-23 | Antenna assembly and antenna array |
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| CN202310960528.2A CN119447771B (en) | 2023-07-31 | 2023-07-31 | Antenna assembly and antenna array |
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| CN109687116A (en) * | 2019-02-01 | 2019-04-26 | 桂林电子科技大学 | The minimized wide-band wide-beam circularly-polarizedmicrostrip microstrip antenna of C-band |
| KR20190058072A (en) * | 2017-11-21 | 2019-05-29 | 현대모비스 주식회사 | Radar device for vehicle |
| CN115810917A (en) * | 2022-11-24 | 2023-03-17 | 西安电子科技大学 | Satellite-borne Ka-band circularly polarized antenna unit, antenna array and phased array |
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| US7889151B1 (en) * | 2007-11-08 | 2011-02-15 | The United States Of America As Represented By The Secretary Of The Navy | Passive wide-band low-elevation nulling antenna |
| US7986280B2 (en) * | 2008-02-06 | 2011-07-26 | Powerwave Technologies, Inc. | Multi-element broadband omni-directional antenna array |
| SG11202101034WA (en) * | 2018-08-02 | 2021-02-25 | Viasat Inc | Antenna element module |
| JP7230408B2 (en) * | 2018-10-02 | 2023-03-01 | カシオ計算機株式会社 | Antenna device and wristwatch type electronic device |
| CN112531338B (en) * | 2020-12-08 | 2022-08-26 | 深圳大学 | Dual-frequency patch antenna capable of widening beam width |
| CN112688079A (en) * | 2020-12-21 | 2021-04-20 | 华南理工大学 | Dual-polarized wide beam antenna based on loading bent grounding metal column |
| CN112768947A (en) * | 2020-12-30 | 2021-05-07 | 重庆两江卫星移动通信有限公司 | Single-feed-point circular polarization antenna of Ka frequency band |
| US11575194B2 (en) * | 2021-04-12 | 2023-02-07 | AchernarTek Inc. | Antenna structure and antenna array |
| CN115207636B (en) * | 2022-07-11 | 2024-10-29 | 中国电子科技集团公司第五十四研究所 | Millimeter wave circularly polarized antenna unit with slot coupling multipoint feed |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190058072A (en) * | 2017-11-21 | 2019-05-29 | 현대모비스 주식회사 | Radar device for vehicle |
| CN109687116A (en) * | 2019-02-01 | 2019-04-26 | 桂林电子科技大学 | The minimized wide-band wide-beam circularly-polarizedmicrostrip microstrip antenna of C-band |
| CN115810917A (en) * | 2022-11-24 | 2023-03-17 | 西安电子科技大学 | Satellite-borne Ka-band circularly polarized antenna unit, antenna array and phased array |
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