CN115513649A - Rectangular patch antenna array for generating high-purity vortex wave - Google Patents
Rectangular patch antenna array for generating high-purity vortex wave Download PDFInfo
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- CN115513649A CN115513649A CN202210585336.3A CN202210585336A CN115513649A CN 115513649 A CN115513649 A CN 115513649A CN 202210585336 A CN202210585336 A CN 202210585336A CN 115513649 A CN115513649 A CN 115513649A
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- 230000005284 excitation Effects 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000003491 array Methods 0.000 abstract description 10
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000005855 radiation Effects 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 3
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
A rectangular patch antenna array for generating high-purity vortex waves belongs to the technical field of wireless communication and solves the problem that the vortex wave mode purity is not high. The antenna array comprises rectangular patch antenna arrays arranged in an X direction and rectangular patch antenna arrays arranged in a Y direction, wherein the two antenna arrays are circular antenna arrays uniformly arranged along the circumference. The rectangular patch antenna arrays arranged in the two directions have the same circle center and radius, rectangular patch antenna units with the same structure are arranged in the two rectangular patch antenna arrays, the number of array elements of the two antenna arrays is N, and N is larger than or equal to 4. The vortex wave with high mode purity is generated by combining the rectangular patch antenna array, and the antenna array has the advantages of simple structure, easily understood principle and convenience in maintenance, and is favorable for improving the application prospect of the vortex wave.
Description
Technical Field
The invention belongs to the technical field of wireless communication, and particularly relates to a rectangular patch antenna array for generating a high-purity vortex wave.
Background
Electromagnetic waves carrying Orbital Angular Momentum (Orbital Angular Momentum) are called vortex waves, and modes of the vortex waves have orthogonality, so that the electromagnetic waves have huge application potential in the field of wireless communication. Vortex waves in different modes are used as orthogonal sub-channels, and each sub-channel carries different information, so that the spectrum capacity can be increased by times, and the spectrum capacity can be increased in an infinite way theoretically. Therefore, the researchers have conducted a lot of work on the generation method of the vortex wave. The current methods for generating vortex waves can be broadly divided into three types, the first being a helicon phase plate through which a plane wave passes and is converted into a vortex wave, see P.Schemmel, S.Maccalil, G.Pisano, et al.three-dimensional dimensions of a micrometer wave adjustable magnetic particles, fuels, 2014,39 (3): 626-629. The second is a cavity antenna, which radiates vortex waves using a resonant cavity, see S.ZHEN, X.Hui, X.jin, et al.Transmission characteristics of a wireless radio wave based on circulating-wave antenna and Propagation,2015, 63 (4): 1530-1536. The third is a circular antenna array, which generates vortex waves with different modes by designing different feeding methods of the antenna array, see j.xu, m.zhao, r.zhang, et al.a Wireless band f-shaped microstrip antenna, ieee Antennas and Wireless Propagation Letters, 2017, 829-832.
However, vortex waves generated based on the methods all carry a plurality of redundant modes, so that the problem of low purity of vortex wave modes is caused, and the capacity of the vortex waves for improving the frequency spectrum capacity is influenced. Therefore, it is very important to design an antenna array for radiating vortex waves with higher purity to solve the problem.
Disclosure of Invention
The invention provides a design method and a feed method of a rectangular patch antenna array for radiating a high-purity vortex wave, which solve the problem of low purity of the conventional vortex wave mode.
The invention provides a design method and a feeding method of a rectangular patch antenna array for generating high-purity vortex waves, which comprises the rectangular patch antenna array arranged in the X direction, the rectangular patch antenna array arranged in the Y direction, a dielectric substrate and a grounding plate, and is characterized in that:
n antenna units of the X-direction arranged rectangular patch antenna array are uniformly distributed on the circumference with the radius of R, and a feed port of each rectangular patch antenna unit is X1 n ；
N antenna units of the Y-direction arranged rectangular patch antenna array are uniformly distributed on a circumference with the radius of R, and a feed port of each rectangular patch antenna unit is Y1 n ；
The number of the units of the rectangular patch antenna array arranged in the X direction is the same as that of the units of the rectangular patch antenna array arranged in the Y direction, and the number of the units is N and is more than or equal to 4;
the dielectric substrate is made of FR4, the dielectric constant is 4.3, the thickness is 1mm, the shape of the dielectric substrate is square, and the side length is 100mm;
the grounding plate is made of copper and has the same shape as the dielectric substrate.
The antenna units in the X-direction arranged rectangular patch antenna array and the Y-direction arranged rectangular patch antenna array have the same excitation signal amplitude.
A feed port X1 of the nth antenna unit of the X-direction arranged rectangular patch antenna array n With an excitation signal phase of
Wherein l is the number of modes of vortex wave and satisfies-N/2<l<N/2。
A feed port Y1 of the nth antenna unit of the Y-direction arranged rectangular patch antenna array n Of excitation signal phase of
Wherein, N/2<l<N/2。
A feed port Y1 of the nth antenna unit of the Y-direction arranged rectangular patch antenna array n With an excitation signal phase of
Wherein, N/2<l<N/2。
When the antenna array works, the excitation of the rectangular patch antenna array arranged in the X direction has the same amplitude, the same frequency and the phase difference of 2 pi l/N, the excitation of the rectangular patch antenna array arranged in the Y direction has the same characteristic, but the N-th array element has the phase difference of +/-pi/2 compared with the N-th array element of the rectangular patch antenna array arranged in the X direction.
The rectangular patch antenna array has two radiation characteristics:
(1) When the phase difference of the Nth array element in the two antenna arrays arranged towards the N direction is pi/2, the radiation characteristics of the x component and the y component of the electric field accord with the vortex wave characteristics with the mode of l, and the radiation mode of the z component of the electric field is the vortex wave of l + 1;
(2) When the phase difference of the Nth array element in the two antenna arrays arranged towards the N direction is-pi/2, the radiation characteristics of the x component and the y component of the electric field accord with the vortex wave characteristics with the mode of l, and the radiation mode of the z component of the electric field is vortex wave with the mode of l-1;
compared with the existing method for generating vortex waves, the rectangular patch antenna array adopted by the invention has a simpler design method and structure, can generate the vortex waves with higher mode purity, and provides a more favorable guarantee for the application prospect of the vortex waves.
Drawings
FIG. 1A is a side view of an embodiment of the present invention;
FIG. 1B is a top view of FIG. 1A;
FIG. 1C is a bottom view of FIG. 1A;
FIG. 2A is a phase distribution diagram of an x-component of an electric field of example 1;
FIG. 2B is a phase distribution diagram of the y-component of the electric field of example 1;
FIG. 2C is a phase distribution diagram of the z-component of the electric field of example 1;
FIG. 3A is a phase distribution diagram of an x-component of an electric field in example 2;
FIG. 3B is a phase distribution diagram of the y component of the electric field of example 2;
FIG. 3C is a phase distribution diagram of the z-component of the electric field of example 2.
Detailed Description
The invention is further illustrated below with reference to examples and figures.
As shown in fig. 1A, embodiments 1 and 2 of the present invention, a rectangular patch antenna array for generating a high-purity vortex wave, includes a rectangular patch antenna array 10 arranged in an X direction, a rectangular patch antenna array 20 arranged in a Y direction, a dielectric substrate 30, and a ground plate 40; the X-direction rectangular patch antenna array 10 and the Y-direction rectangular patch antenna array 20 have the same array center. The operating frequency of the rectangular patch antenna unit is 10GHz.
The X-direction rectangular patch antenna array 10 and the Y-direction rectangular patch antenna array 20 are each formed by 8 antenna elements and are uniformly distributed on a circumference with a radius of 30 mm. The basic sides of the medium are 100mm. The dimensions of the rectangular patch element are shown in table 1.
TABLE 1 parameters of the dimensions of the ground plate
| Name (R) | Size (mm) |
| l f | 2 |
| l m | 3 |
| l s | 7.54 |
| w s | 8 |
| w g | 0.1 |
| w f | 0.7 |
In the specific embodiment 1 of the present invention, when operating, 8 rectangular patch antennas of the X-direction arranged rectangular patch antenna array 10 have the same excitation amplitude, and the clockwise phase sequentially is: 0 °, -45 °, -90 °, -135 °, -180 °, -225 °, -270 °, -315 °. 8 array elements of the rectangular patch antenna array (20) arranged in the Y direction also have the same amplitude, and the phase in the clockwise direction is as follows: 90 degrees, 45 degrees, 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees and 225 degrees.
In the embodiment of the invention, the phase distribution diagram result is a simulation result which is 250mm away from the antenna array, and the observation plane is parallel to the antenna array. FIG. 2A is a phase distribution diagram of the x component of the electric field in the embodiment 1, which can be found out as the distribution characteristic of the complex vortex wave mode 1; FIG. 2B is the phase distribution diagram of the y-component of the electric field in the present embodiment 1, which is the distribution characteristic of the complex vortex wave mode 1; fig. 3C is a phase distribution diagram of the z-component of the electric field in the present embodiment 1, which is a phase distribution diagram of the vortex wave mode 2.
The specific embodiment 2 of the present invention has the same antenna structure as the embodiment 1, and when the embodiment 2 works, 8 rectangular patch antennas of the rectangular patch antenna array 10 arranged in the X direction have the same excitation amplitude, and the phase along the clockwise direction sequentially is: 0 °, -45 °, -90 °, -135 °, -180 °, -225 °, -270 °, -315 °. The 8 array elements of the rectangular patch antenna array 20 arranged in the Y direction also have the same amplitude, and the phase along the clockwise direction sequentially is: -90 °, -135 °, -180 °, -225 °, -270 °, -315 °, 0 °, -45 °.
Fig. 3A, 3B and 3C are phase distribution diagrams of x, y and z components of the electric field in example 2, and it can be seen that the phase distribution of the x and y components exhibits the phase distribution characteristic of the vortex wave mode 1, and the phase distribution of the z component of the electric field exhibits the phase distribution characteristic of the vortex wave mode 0.
In the two embodiments, the antenna arrays of the X-direction rectangular patch antenna array 10 and the Y-direction rectangular patch antenna array 20 have the same radius, antenna unit, and operating frequency, and in actual manufacturing, only one antenna array needs to be manufactured, and then the feeding of the array is changed to obtain the vortex waves with different radiation characteristics.
Claims (2)
1. A rectangular patch antenna array for generating high-purity vortex waves comprises an X-direction arranged rectangular patch antenna array (10), a Y-direction arranged rectangular patch antenna array (20), a dielectric substrate (30) and a ground plate (40), and is characterized in that:
the X-direction rectangular patch antenna array (10) and the Y-direction rectangular patch antenna array (20) are formed by rectangular patch antennas;
n antenna units of the X-direction arranged rectangular patch antenna array (10) are uniformly distributed on a circumference with the radius of R, and a feed port of each rectangular patch antenna unit is X1 n ；
N antenna units of the Y-direction arranged rectangular patch antenna array (20) are uniformly distributed on a circumference with the radius of R, and a feed port of each rectangular patch antenna unit is Y1 n ；
The number of the units of the rectangular patch antenna array (10) arranged in the X direction is the same as that of the units of the rectangular patch antenna array (20) arranged in the Y direction, and the number of the units is N and is more than or equal to 4;
the dielectric substrate (30) is square;
the grounding plate (40) is made of copper and has the same shape as the dielectric substrate.
2. The array of rectangular patch antennas for generating high purity vortex waves according to claim 1, wherein said array of rectangular patch antennas (10) arranged in X-direction and array of rectangular patch antennas (20) arranged in Y-direction,
the antenna units in the X-direction arranged rectangular patch antenna array (10) and the Y-direction arranged rectangular patch antenna array (20) have the same excitation signal amplitude;
a feed port X1 of the nth antenna unit of the X-direction arranged rectangular patch antenna array (10) n Of excitation signal phase of
Wherein l is the number of modes of vortex wave and satisfies-N/2<l<N/2；
A feed port Y1 of the nth antenna unit of the Y-direction arranged rectangular patch antenna array (20) n With an excitation signal phase of
Wherein, N/2<l<N/2；
A feed port Y1 of the nth antenna unit of the Y-direction arranged rectangular patch antenna array (20) n Of excitation signal phase of
Wherein, N/2<l<N/2。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210585336.3A CN115513649B (en) | 2022-05-26 | 2022-05-26 | Rectangular patch antenna array for generating high-purity vortex waves |
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| CN202210585336.3A CN115513649B (en) | 2022-05-26 | 2022-05-26 | Rectangular patch antenna array for generating high-purity vortex waves |
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| CN115513649A true CN115513649A (en) | 2022-12-23 |
| CN115513649B CN115513649B (en) | 2024-04-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751167A (en) * | 2019-10-30 | 2021-05-04 | 同济大学 | Antenna panel, vortex beam antenna and working method thereof |
| CN113991327A (en) * | 2021-09-30 | 2022-01-28 | 中国人民解放军海军工程大学 | Antenna array for improving vortex wave mode purity |
| WO2022021657A1 (en) * | 2020-07-30 | 2022-02-03 | 重庆邮电大学 | Sparse optimization method for electromagnetic vortex wave multiple-input multiple-output rectangular array |
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2022
- 2022-05-26 CN CN202210585336.3A patent/CN115513649B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751167A (en) * | 2019-10-30 | 2021-05-04 | 同济大学 | Antenna panel, vortex beam antenna and working method thereof |
| WO2022021657A1 (en) * | 2020-07-30 | 2022-02-03 | 重庆邮电大学 | Sparse optimization method for electromagnetic vortex wave multiple-input multiple-output rectangular array |
| CN113991327A (en) * | 2021-09-30 | 2022-01-28 | 中国人民解放军海军工程大学 | Antenna array for improving vortex wave mode purity |
Non-Patent Citations (2)
| Title |
|---|
| YONGCONG LIU; WEIWEN LI; QIUHAO LI; JIANBIN ZHU: "Rectangular Patch Antenna Generating Second-Order Vortex Wave", 《2019 COMPUTING, COMMUNICATIONS AND IOT APPLICATIONS (COMCOMAP)》, 2 March 2020 (2020-03-02) * |
| 王文星;蒋洪林;杨晶晶;黄铭;: "X波段宽频带多模轨道角动量天线仿真与设计", 强激光与粒子束, no. 10, 24 October 2018 (2018-10-24) * |
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