CN110212313B - Electrically adjustable orbital angular momentum wave mode reconfigurable antenna - Google Patents
Electrically adjustable orbital angular momentum wave mode reconfigurable antenna Download PDFInfo
- Publication number
- CN110212313B CN110212313B CN201910495951.3A CN201910495951A CN110212313B CN 110212313 B CN110212313 B CN 110212313B CN 201910495951 A CN201910495951 A CN 201910495951A CN 110212313 B CN110212313 B CN 110212313B
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- printed metal
- layer printed
- microstrip line
- angular momentum
- orbital angular
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- 239000002184 metal Substances 0.000 claims abstract description 42
- 239000000758 substrate Substances 0.000 claims abstract description 27
- 230000005855 radiation Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- H01Q21/0075—Stripline fed arrays
-
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses an electrically adjustable road angle momentum wave mode reconfigurable antenna, which comprises a top layer printed metal, a first medium substrate, a middle layer printed metal, a second medium substrate, a bottom layer printed metal, a single-pole double-throw switch, a power line and a signal control line, wherein the top layer printed metal, the first medium substrate, the middle layer printed metal, the second medium substrate and the bottom layer printed metal are sequentially laminated and fixedly connected from top to bottom; the bottom layer printed metal comprises an annular feed microstrip line, a linear microstrip line and two bottom layer grounding pads; the first medium substrate, the middle layer printing metal and the second medium substrate are rectangular and have the same size; the top layer printed metal contains N rectangular radiating patch antennas and two top layer ground pads. The invention can rapidly switch the modes of the orbital angular momentum electromagnetic wave through the digital logic level signals, so that the orbital angular momentum waves of two orthogonal modes can be used in a common caliber. Application of the present invention to the field of communication is expected to improve communication capacity.
Description
Technical Field
The invention relates to the technical field of communication, in particular to the technical field of generation of orbital angular momentum electromagnetic waves, and in particular relates to an electrically adjustable orbital angular momentum wave mode reconfigurable antenna.
Background
Wireless communication is increasingly demanded by people with a growing growth of wireless communication. The wireless communication technology realizes information transmission by carrying information through electromagnetic waves, and in order to prevent mutual interference of the electromagnetic waves carrying information of each path, people need to continuously widen the use frequency band. However, the spectrum resources are increasingly strained, and the channel capacity is increasingly shannon-limiting. Therefore, the transformation of multiplexing technology is particularly important.
The orbital angular momentum vortex wave has spiral wave front phase, and because the orbital angular momentum vortex waves among different modes are mutually orthogonal, and theoretically, the orbital angular momentum vortex wave has infinite modes, each path of information can be modulated on the orbital angular momentum vortex waves of different modes, so that the orbital angular momentum vortex wave has infinite independent orbital angular momentum channels under the same carrier frequency, and the frequency spectrum utilization rate is greatly improved and the communication capacity is increased by utilizing the new degree of freedom of the mode number of the orbital angular momentum vortex wave. On the other hand, an antenna is required to emit a wireless signal, and an antenna of different forms is required to emit an orbital angular momentum wave of different modes, and if more than two modes are required to be used simultaneously, the number of antennas and transmitters is generally increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing an electrically adjustable orbital angular momentum wave mode reconfigurable antenna aiming at the defects related to the background technology.
The invention adopts the following technical scheme for solving the technical problems:
an electrically adjustable orbital angular momentum wave mode reconfigurable antenna comprises a top layer printed metal, a first dielectric substrate, an intermediate layer printed metal, a second dielectric substrate, a bottom layer printed metal, a single-pole double-throw switch, a power line and a signal control line, wherein the top layer printed metal, the first dielectric substrate, the intermediate layer printed metal, the second dielectric substrate and the bottom layer printed metal are sequentially laminated and fixedly connected from top to bottom;
the bottom layer printed metal comprises an annular feed microstrip line, a linear microstrip line and two bottom layer grounding pads, wherein a notch is arranged on the annular feed microstrip line, and two ends of the notch are respectively connected with two gating pins of the single-pole double-throw switch; one end of the linear microstrip line is connected with a pin of a public end of the single-pole double-throw switch, and the other end of the linear microstrip line is connected with an external radio frequency signal; one end of the power line is connected with a power pin of the single-pole double-throw switch, and the other end of the power line is connected with external voltage; one end of the signal control line is connected with a signal pin of the single-pole double-throw switch, and the other end of the signal control line is connected with an external control signal;
the first dielectric substrate, the middle layer printing metal and the second dielectric substrate are rectangular and have the same size;
the top layer printed metal comprises N rectangular radiation patch antennas and two top layer grounding pads, the centers of the N rectangular radiation patch antennas are uniformly distributed on a circle, the N rectangular radiation patch antennas are respectively connected with the annular feed microstrip line through a cylindrical via hole, and the annular feed microstrip line feeds each rectangular radiation patch antenna so that the annular feed microstrip line works;
the two top layer grounding pads and the two bottom layer grounding pads are connected to the middle layer printing metal through the through holes.
As a further optimization scheme of the electrically adjustable orbital angular momentum wave mode reconfigurable antenna, the N value is 6.
As a further optimization scheme of the electrically adjustable orbital angular momentum wave mode reconfigurable antenna, the characteristic impedance of the linear microstrip line is equal to 50 ohms.
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
when the electrically adjustable orbital angular momentum wave mode reconfigurable antenna is used, radio frequency signals are input from a linear microstrip line and are guided to the left or right through a single-pole double-throw switch. The diversion direction of the single-pole double-throw switch is determined by the logic level of the control signal line, if the logic level is low level, the radio frequency signal is diverted to the left, at the moment, the radio frequency signal flows clockwise along the annular feeder line, and feeds power to 6 rectangular patch antennas sequentially through 6 cylindrical through holes, and the radiation field of the patch antennas forms an orbital angular momentum wave in a +1 mode in space; if the logic level input by the control signal line is high level, the single-pole double-throw switch guides the radio frequency signal to the right, and the radiation field of the patch antenna forms orbital angular momentum waves in a-1 mode in space.
The invention can make the antenna emit two paths of orthogonal orbital angular momentum waves without increasing the number of the antennas, thereby improving the communication capacity.
Drawings
Fig. 1 (a), 1 (b) and 1 (c) are side, top and bottom views, respectively, of the present invention;
fig. 2 is a phase profile of the invention when operating in the +1 mode, 300mm from the antenna surface;
fig. 3 shows the phase profile of the invention when operating in-1 mode, 300mm from the antenna surface.
In the figure, the metal is printed on the 1-bottom layer, the metal is printed on the 2-middle layer, the metal is printed on the 3-top layer, the first dielectric substrate is 4-, the rectangular patch antenna is 5-, the cylindrical via is 6-, the grounding pad is 7-top layer, the annular microstrip line is 8-9-power line, the single pole double throw switch is 10-single pole double throw switch, the linear microstrip line is 11-12-control signal line, and the grounding pad is 13-bottom layer.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings:
this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the components are exaggerated for clarity.
As shown in fig. 1 (a), 1 (b) and 1 (c), the invention discloses an electrically adjustable orbital angular momentum wave mode reconfigurable antenna, which comprises a top layer printed metal, a first dielectric substrate, an intermediate layer printed metal, a second dielectric substrate, a bottom layer printed metal, a single-pole double-throw switch, a power line and a signal control line, wherein the top layer printed metal, the first dielectric substrate, the intermediate layer printed metal, the second dielectric substrate and the bottom layer printed metal are sequentially laminated and fixedly connected from top to bottom;
the bottom layer printed metal comprises an annular feed microstrip line, a linear microstrip line and two bottom layer grounding pads, wherein a notch is arranged on the annular feed microstrip line, and two ends of the notch are respectively connected with two gating pins of the single-pole double-throw switch; one end of the linear microstrip line is connected with a pin of a public end of the single-pole double-throw switch, and the other end of the linear microstrip line is connected with an external radio frequency signal; one end of the power line is connected with a power pin of the single-pole double-throw switch, and the other end of the power line is connected with external voltage; one end of the signal control line is connected with a signal pin of the single-pole double-throw switch, and the other end of the signal control line is connected with an external control signal;
the first dielectric substrate, the middle layer printing metal and the second dielectric substrate are rectangular and have the same size;
the top layer printed metal comprises N rectangular radiation patch antennas and two top layer grounding pads, the centers of the N rectangular radiation patch antennas are uniformly distributed on a circle, the N rectangular radiation patch antennas are respectively connected with the annular feed microstrip line through a cylindrical via hole, and the annular feed microstrip line feeds each rectangular radiation patch antenna so that the annular feed microstrip line works;
the two top layer grounding pads and the two bottom layer grounding pads are connected to the middle layer printing metal through the through holes.
In fig. 1 (b), the value of N is 6, and the characteristic impedance of the straight microstrip line is preferably 50 ohms.
The electromagnetic wave beam carrying the orbital angular momentum has the phase distribution of exp (ilθ), wherein l is the topological charge number, θ is the angular coordinate, in order to enable the annular array antenna to radiate the electromagnetic wave carrying the orbital angular momentum, a certain radiating element (namely a rectangular patch antenna in the invention) in the annular array is taken as a reference, and other radiating elements along the annular array should have the phase distribution of- (N-1) lθ/N or + (N-1) lθ/N in sequence, wherein N is the nth radiating element of the reference radiating element number, the value range of N is 1 to N, and N is the total number of radiating elements. In the present invention |l|=1, when the control signal level is low level l= -1, and when the control signal level is high level l= +1. In the invention, in order to enable the N patch antennas distributed in the annular array to be placed smoothly, the phase difference of the patch antennas distributed along the annular array in turn is adjusted to be 360 DEG n+ (N-1) xLθ/N. In a specific embodiment of the invention, the value of N takes 6.
According to the phase requirements of the 6 annular distributed rectangular patch antennas, the electric length between the adjacent rectangular patch antennas can be calculated according to the specific embodiment of the invention, the length is 8.3mm at 4.85GHz, and the radius of the annular microstrip line is 50mm.
In a specific embodiment, the size of the 6 rectangular patches is 20.1mm×17.5mm, and the connection point with the cylindrical via is set at the center of the side length of 20.1mm, which is 3.5mm and 17.5mm on the right side; the diameter of the cylindrical via was set to 0.7mm.
In a specific embodiment, the dielectric substrate is set to have a dielectric constant of 2.2 and a thickness of 0.5mm, and the total thickness of the two dielectric substrates is 1mm and the size is 150mm by 150mm.
In a specific embodiment, the widths of the straight microstrip line and the annular microstrip line are set to be 1.5mm.
As shown in figures 2 and 3, the phase in the +1 and-1 modes generally shows clear single-arm spiral distribution, and has good mode purity.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (3)
1. The electrically adjustable orbital angular momentum wave mode reconfigurable antenna is characterized by comprising top layer printed metal, a first dielectric substrate, middle layer printed metal, a second dielectric substrate, bottom layer printed metal, a single-pole double-throw switch, a power line and a signal control line, wherein the top layer printed metal, the first dielectric substrate, the middle layer printed metal, the second dielectric substrate and the bottom layer printed metal are sequentially laminated and fixedly connected from top to bottom;
the bottom layer printed metal comprises an annular feed microstrip line, a linear microstrip line and two bottom layer grounding pads, wherein a notch is arranged on the annular feed microstrip line, and two ends of the notch are respectively connected with two gating pins of the single-pole double-throw switch; one end of the linear microstrip line is connected with a pin of a public end of the single-pole double-throw switch, and the other end of the linear microstrip line is connected with an external radio frequency signal; one end of the power line is connected with a power pin of the single-pole double-throw switch, and the other end of the power line is connected with external voltage; one end of the signal control line is connected with a signal pin of the single-pole double-throw switch, and the other end of the signal control line is connected with an external control signal; the two bottom layer grounding pads are arranged on two sides of the linear microstrip line;
the first dielectric substrate, the middle layer printing metal and the second dielectric substrate are rectangular and have the same size;
the top layer printed metal comprises N rectangular radiation patch antennas and two top layer grounding pads, the centers of the N rectangular radiation patch antennas are uniformly distributed on a circle, the N rectangular radiation patch antennas are respectively connected with the annular feed microstrip line through a cylindrical via hole, and the annular feed microstrip line feeds each rectangular radiation patch antenna so that the annular feed microstrip line works;
the two top layer grounding pads and the two bottom layer grounding pads are connected to the middle layer printing metal through the through holes.
2. The electrically tunable orbital angular momentum wave mode reconfigurable antenna of claim 1, wherein N has a value of 6.
3. An electrically tunable orbital angular momentum wave mode reconfigurable antenna according to claim 1, wherein the characteristic impedance of the straight microstrip line is equal to 50 ohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910495951.3A CN110212313B (en) | 2019-06-10 | 2019-06-10 | Electrically adjustable orbital angular momentum wave mode reconfigurable antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910495951.3A CN110212313B (en) | 2019-06-10 | 2019-06-10 | Electrically adjustable orbital angular momentum wave mode reconfigurable antenna |
Publications (2)
| Publication Number | Publication Date |
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| CN110212313A CN110212313A (en) | 2019-09-06 |
| CN110212313B true CN110212313B (en) | 2024-04-12 |
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| CN201910495951.3A Active CN110212313B (en) | 2019-06-10 | 2019-06-10 | Electrically adjustable orbital angular momentum wave mode reconfigurable antenna |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111092294B (en) * | 2019-12-06 | 2021-09-10 | 西安电子科技大学 | Liquid antenna based on OAM single mode and mixed mode |
| CN111180885B (en) * | 2020-02-18 | 2022-03-22 | 西安理工大学 | Polarization mode composite agile orbital angular momentum antenna |
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|---|---|---|---|---|
| CN105071034A (en) * | 2015-08-27 | 2015-11-18 | 宁夏大学 | Multi-modal orbital angular momentum (OAM) vortex electromagnetic wave microstrip array antenna |
| CN108736154A (en) * | 2018-04-26 | 2018-11-02 | 西安电子科技大学 | A kind of circular polarisation orbital angular momentum antenna |
| CN109728448A (en) * | 2018-12-06 | 2019-05-07 | 中国科学院上海微系统与信息技术研究所 | Circle ring array structure and its motivational techniques for orbital angular momentum telecommunication |
| CN109755765A (en) * | 2018-12-04 | 2019-05-14 | 西安电子科技大学 | Multi-modal restructural orbital angular momentum antenna based on Homogeneous Circular array |
| CN209843962U (en) * | 2019-06-10 | 2019-12-24 | 南京航空航天大学 | Electrically-adjustable track angular momentum wave mode reconfigurable antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102205460B1 (en) * | 2014-11-27 | 2021-01-20 | 한국전자통신연구원 | Array antenna apparatus for rotation mode, and wireless communication terminal and method |
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2019
- 2019-06-10 CN CN201910495951.3A patent/CN110212313B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071034A (en) * | 2015-08-27 | 2015-11-18 | 宁夏大学 | Multi-modal orbital angular momentum (OAM) vortex electromagnetic wave microstrip array antenna |
| CN108736154A (en) * | 2018-04-26 | 2018-11-02 | 西安电子科技大学 | A kind of circular polarisation orbital angular momentum antenna |
| CN109755765A (en) * | 2018-12-04 | 2019-05-14 | 西安电子科技大学 | Multi-modal restructural orbital angular momentum antenna based on Homogeneous Circular array |
| CN109728448A (en) * | 2018-12-06 | 2019-05-07 | 中国科学院上海微系统与信息技术研究所 | Circle ring array structure and its motivational techniques for orbital angular momentum telecommunication |
| CN209843962U (en) * | 2019-06-10 | 2019-12-24 | 南京航空航天大学 | Electrically-adjustable track angular momentum wave mode reconfigurable antenna |
Non-Patent Citations (2)
| Title |
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| 基于多模态OAM涡旋电磁波的L波段宽频阵列天线设计;李强等;电子学报(第12期);全文 * |
| 无线通信中的轨道角动量天线综述;党唯等;电子技术应用(第6期);全文 * |
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| CN110212313A (en) | 2019-09-06 |
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