CN109755736A - Leaky wave Microstrip Loop orbital angular momentum antenna - Google Patents
Leaky wave Microstrip Loop orbital angular momentum antenna Download PDFInfo
- Publication number
- CN109755736A CN109755736A CN201910087151.8A CN201910087151A CN109755736A CN 109755736 A CN109755736 A CN 109755736A CN 201910087151 A CN201910087151 A CN 201910087151A CN 109755736 A CN109755736 A CN 109755736A
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- China
- Prior art keywords
- microstrip line
- microstrip
- angular momentum
- orbital angular
- annular
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Abstract
The present invention provides a kind of leaky wave Microstrip Loop orbital angular momentum antenna, it includes medium substrate, the microstrip line and ground plane for being divided into the medium substrate upper and lower surface, the microstrip line includes interval and a plurality of annular microstrip line being arranged concentrically, the a plurality of annular microstrip line is equipped with opening to form the beginning and terminal of every annular microstrip line in opening, wherein, the beginning is connected with the coaxial feeder for connecting with feeding network, and the terminal is connected with matched load.Setting opening on the microstrip line, the opening of microstrip line terminates matched load, antenna is set to generate annular traveling wave, to radiate OAM, by the way that at least two concentric microstrip lines are arranged on medium substrate 1, so that the antenna is integrated at least two independent micro-strip radiating elements, realizes the integrated of more OAM mould radiating elements under same working frequency, keep antenna more with practical value.
Description
Technical field
The present invention relates to field of antenna more particularly to a kind of leaky wave Microstrip Loop orbital angular momentum antennas.
Background technique
For alleviate frequency spectrum resource it is increasingly in short supply with wireless traffic demand it is growing between contradiction, educational circles is in all respects
It has made extensive and intensive studies.In recent years, orbital angular momentum (Orbital Angular Momentum, OAM) is due to it
The considerable prospect of very big spread-spectrum resource, causes the extensive concern of educational circles.The electromagnetic wave of OAM is carried, equiphase surface will
No longer it is traditional plane or spherical surface, but is in vortex shape；The OAM wave of different mode, the vortex form of equiphase surface is not yet
Together.Multiple carrier waves of same frequency, as long as its OAM mode is different, be exactly it is mutually orthogonal, provide for multiple independent channels.
When these independent channels are used for the parallel transmission of single-pass data, high transmission can be realized in narrower-band
Rate；When these independent channels distribute to different user, OAM, which is equivalent to, to be provided except time division multiplexing, frequency division multiplexing and code point
Completely new multiplex mode outside multiplexing --- " OAM mode division multiplexing ", thus greatly spread-spectrum efficiency, various forms of OAM days
Line is also proposed in succession.
Current mainstream OAM antenna can be divided into Homogeneous Circular array, spiral phase plate and super 3 class of surface of electromagnetism, but mostly
It is restricted in practical applications because having difficulties in miniaturization and multimode multiplexing.Meanwhile though the above antenna can be in difference
Frequency point generates the OAM of different modalities, but can not radiate multimode OAM in same frequency point.
Summary of the invention
The purpose of the present invention is intended to provide a kind of leaky wave Microstrip Loop orbital angular momentum in same frequency point radiation multimode
Antenna.
To achieve the goals above, the present invention the following technical schemes are provided:
A kind of leaky wave Microstrip Loop orbital angular momentum antenna, including medium substrate, it is divided into the medium substrate upper and lower surface
Microstrip line and ground plane, the microstrip line includes interval and a plurality of annular microstrip line being arranged concentrically, and a plurality of annular is micro-
Opening is equipped with to form the beginning and terminal of every annular microstrip line in opening with line, wherein the beginning connection is useful
In the coaxial feeder connecting with feeding network, the terminal is connected with matched load.
Further setting: the opening of a plurality of annular microstrip line is located at along the straight line that annular radii extends.
Further setting: further including the loaded medium plate being covered on the microstrip line.
Further setting: two, respectively inner ring microstrip line and outer ring microstrip line are arranged in the annular microstrip line.
Further setting: Zhou Changwei 1.875 λ -2.125 λ, the Zhou Changwei of the outer ring microstrip line of the inner ring microstrip line
2.875 λ -3.125 λ, λ are the traveling wave wavelength of microstrip line.
Further setting: 2 λ of Zhou Changwei of the inner ring microstrip line, 3 λ of Zhou Changwei of the outer ring microstrip line.
Further setting: the medium substrate is equipped with metallic vias, and the both ends of the microstrip line are respectively through metallic vias
It is connect with the coaxial feeder and matched load for being set to medium substrate lower surface.
Further setting: the ground plane limited by metal base plate fixed with medium substrate below the medium substrate and
At.
Compared with prior art, the solution of the invention has the following advantages:
1., with microstrip antenna, being used for the end of microstrip line in leaky wave Microstrip Loop orbital angular momentum antenna of the invention
Termination matching load so that antenna generates annular traveling wave, and then radiates OAM, while setting opening on the microstrip line, forms leaky wave
Antenna is devised a kind of OAM antenna of disresonance type with this present invention, has obtained wider impedance bandwidth, simple with structure,
Easy processing, low section, easily conformal, height face have the advantages that scan characteristic, convenient for integrated with active device.Meanwhile compared to
Cavity body structure, transmission line structure compact dimensions, easy to process, design is simple.By on medium substrate 1 be arranged two interval and
The annular microstrip line being arranged concentrically, so that the antenna is integrated with two independent micro-strip radiating elements, to realize in same work
The method that is integrated, while using parameter optimization and coated by dielectric of more OAM mould radiating elements under frequency, effectively increases antenna
Radiation efficiency and gain peak, keep antenna more with practical value.
2. the opening of inner ring microstrip line and outer ring microstrip line is located in leaky wave Microstrip Loop orbital angular momentum antenna of the invention
Along the straight line that same annular radii extends, in order to produce and process.
3. in leaky wave Microstrip Loop orbital angular momentum antenna of the invention, overwrite media load plate on the microstrip line, by
Coated by dielectric technology is used in antenna, the gain of antenna can be improved, obtain higher output power, is obtained different radiation directions and is received
The effect held back.On the basis of not influencing the physical properties such as the vortex phase of radiated OAM, coated by dielectric plate will promote antenna
Radiation efficiency and gain.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of leaky wave Microstrip Loop orbital angular momentum antenna of the invention；
Fig. 2 is the schematic diagram of the signal microstrip line construction of leaky wave Microstrip Loop orbital angular momentum antenna of the invention；
Fig. 3 is the vortex phase and 3D radiation of two kinds of OAM modes of leaky wave Microstrip Loop orbital angular momentum antenna of the invention
Schematic diagram；
Fig. 4 is the axis of leaky wave Microstrip Loop orbital angular momentum antenna of the present invention than curve and scattering parameter curve graph.
In figure, 1, medium substrate；2, microstrip line；21, inner ring microstrip line；22, outer ring microstrip line；3, ground plane；4, it matches
Load；5, coaxial feeder；6, loaded medium plate.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
The present invention relates to a kind of leaky wave Microstrip Loop orbital angular momentum antennas, realize wider impedance bandwidth, meanwhile, structure
Compact dimensions, it is easy to process, it can be achieved that under same working frequency more OAM mould radiating elements it is integrated.
Referring to Fig. 1 and Fig. 2, the leaky wave Microstrip Loop orbital angular momentum antenna includes medium substrate 1, is divided into medium substrate
The a plurality of microstrip line 2 and ground plane 3 of 1 upper and lower surface, a plurality of microstrip line 2 are a plurality of annular micro-strip for being spaced and being arranged concentrically
Line, and opening is provided on a plurality of annular microstrip line to form the beginning and terminal of every annular microstrip line.
Wherein, the beginning of every annular microstrip line is connected with the coaxial feeder 5 for connecting with feeding network, institute
The terminal for stating annular microstrip line is connected with matched load 4.By opened up on the medium substrate 1 metallic vias (do not indicate, under
Together), metallic vias and the coaxial feeder 5 for being set to 1 lower surface of medium substrate are passed through in the both ends of the annular microstrip line respectively
It is connected with matched load 4.The terminal of the microstrip line 2 accesses matched load 4, to eliminate back wave, so that the electromagnetic field of feed-in
It is distributed in traveling-wave mode.
The opening of a plurality of annular microstrip line can shift to install, but in order to easy to process, in the present embodiment that a plurality of annular is micro-
Opening with line, which is set to, to be located at along the straight line that same annular radii extends.
Further, the annular microstrip line is provided with two, respectively inner ring microstrip line 21 and outer ring microstrip line 22,
Wherein, 2 λ of Zhou Changwei of the inner ring microstrip line 21, Zhou Changwei 3 λ, λ of the outer ring microstrip line 22 are the traveling wave on microstrip line 2
Wavelength.But in emulation practice, influenced by the factors such as higher mode are generated on environment and microstrip line, inner ring microstrip line 21 and outer
It is difficult to accurately reach 2 λ and 3 λ between circle microstrip line 22, therefore by optimization design, the perimeter of inner ring microstrip line 21 can be determined asThe perimeter of the outer ring microstrip line 22 is determined asWherein, λ0For vacuum medium wavelength, ε is the phase of dielectric material
To dielectric constant.Therefore, because the influence of environmental factor and Practical Project practice processing etc., 21 He of inner ring microstrip line
The perimeter of outer ring microstrip line 22 allows that there are errors, it is however generally that fluctuation is no more than 0.125 λ, i.e., the described inner ring microstrip line 21
Peripheral extent be 1.875-2.125 λ, the peripheral extent of the outer ring microstrip line 22 is 2.875-3.125 λ, and λ is microstrip line 2
On traveling wave wavelength.
In addition, the gold that the ground plane 3 for being set to 1 lower surface of medium substrate is fixed with medium substrate 1 by 1 lower section of medium substrate
Belong to bottom plate to limit.By the way that ground plane 3 of the metal base plate as antenna is arranged in the lower surface of medium substrate 1, for anti-
Radio magnetic wave improves the gain of antenna.
It further includes the loaded medium plate 6 being covered on microstrip line 2 that the leaky wave micro-strip, which changes orbital angular momentum antenna, by
Coated by dielectric technology is used in antenna, the gain of antenna can be improved, obtain higher output power, is obtained different radiation directions and is received
The effect held back.On the basis of not influencing the physical properties such as the vortex phase of radiated OAM, coated by dielectric plate will promote antenna
Radiation efficiency and gain.
In addition, can also improve the radiation efficiency of antenna by parameter optimization, optimized design in the present embodiment can
Determine that each parameter in Fig. 1, Fig. 2, size are as follows: (unit: mm)
| Parameter item | L | H1 | H2 | R1 | R2 | W | WS | d | RL |
| Numerical value | 60 | 4 | 4 | 6.46 | 11.4 | 4.1 | 2 | 1 | 50Ω |
Wherein, RLCharacteristic impedance for the coaxial feeder 5 connect with 2 port of microstrip line.
Leaky wave Microstrip Loop orbital angular momentum antenna in the present invention uses microstrip antenna, is connect using the terminal in microstrip line 2
Matched load 4 so that antenna generates annular traveling wave, and then radiates OAM, while opening being arranged on microstrip line 2, forms leaky wave day
Line is devised a kind of OAM antenna of disresonance type with this present invention, has obtained wider impedance bandwidth, has structure simple, easy
Processing, low section, easily conformal, height face have the advantages that scan characteristic, convenient for integrated with active device.Meanwhile compared to chamber
Body structure, transmission line structure compact dimensions, easy to process, design is simple.By two intervals of setting on medium substrate 1 and together
The annular microstrip line of heart setting, so that the antenna is integrated with two independent micro-strip radiating elements, to realize in same work frequency
The method that is integrated, while using parameter optimization and coated by dielectric of more OAM mould radiating elements under rate, effectively increases antenna
Radiation efficiency and gain peak keep antenna more with practical value.
Leaky wave Microstrip Loop orbital angular momentum antenna of the invention has carried out performance simulation using full-wave electromagnetic simulation software.It is imitative
It is true the results show that using final optimization pass parameter bimodulus Microstrip Loop OAM antenna, on 5GHz, for l=2 and 3 both modalities which,
There are the peak gain of 2.1dB and 1.9dB respectively, compared to-the 9.7dB for the initial model for not taking any gain suppression means
With -9.3dB, has and greatly promoted.It is located at upper antenna surface 10mm in simulations, is parallel to X/Y plane, area 300mm
On the plane of vision of × 300mm, when two Microstrip Loops are motivated respectively on 5GHz, the vortex phase of visible Ez component, such as
Shown in Fig. 3.In addition, also showing the typical hollow depression of OAM wave in the simulation result of directional diagram；However, by termination matched load 4
Influence, recess does not appear in the middle of θ=0 °, but is slightly displaced from.
Fig. 3 is the simulation result using the bimodulus Microstrip Loop OAM antenna of final optimization pass parameter.Left column: interior Microstrip Loop (l=
2)；Right column: outer Microstrip Loop (l=3).In vortex phase figure, different colours representative-π arrives the phase of π；In three-dimensional figure, arrow
Pointed is to have offset hollow depression.
For the performance for further verifying antenna, makes in kind and measured.Refer to Fig. 4, two microstrip lines 2
Beginning and terminal have all guided the metal base plate that layer dielectric substrate 1 connects by plated-through hole；Also, two microstrip lines 2
Beginning is connected with the inner conductor of coaxial feeder 5, and terminal is grounded via 50 Ω matched loads 4.In 4GHz to 6GHz, inside and outside circle
The actual measurement input port voltage standing wave ratio of microstrip line 21,22 is all ideal, but measured result is higher than simulation result, especially
It is inner ring microstrip line 21 at 4GHz to 4.5GHz.This is because in actual processing, close at metal base plate, it is necessary to remove
The outer conductor of a part of coaxial feeder 5 causes 5 characteristic impedance of coaxial feeder to slightly have on the basis of 50 Ω nominal value for being grounded
Offset.Meanwhile measurement result also indicates that, the isolation-S of two input ports2313dB or more is held on 4GHz to 6GHz.
The peak gain of antenna sample is respectively 1.5dB (l=2) and 1.8dB (l=3), and about 0.3dB lower than simulation value belongs to
In the normal range (NR) by dielectric loss and measurement influence of noise.Meanwhile it is similar with simulation result, it surveys in the directional diagram of the face E
Sky recess is also influenced by termination matched load 4 and slightly offsets by θ=0 ° direction.Finally, to confirm that the antenna can generate two
Kind OAM mould, has carried out actual measurement to the vortex phase that two microstrip lines 2 respectively generate.The position of plane of vision and antenna to be measured
It is similar with emulation to set relationship；Actual observation plane sizes are 1m × 1m, from upper antenna surface 1m to be measured.The result of actual measurement shows that
When two feed ports are motivated respectively, which can generate respectively l=2 in the frequency range of 4.6GHz to 5.2GHz
With 3 vortex phase.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of leaky wave Microstrip Loop orbital angular momentum antenna, it is characterized in that: including medium substrate, being divided on the medium substrate
The microstrip line and ground plane of lower surface, the microstrip line includes a plurality of annular microstrip line for being spaced and being arranged concentrically, described a plurality of
Annular microstrip line is equipped with opening to form the beginning and terminal of every annular microstrip line in opening, wherein the beginning connects
It is connected to the coaxial feeder for connecting with feeding network, the terminal is connected with matched load.
2. leaky wave Microstrip Loop orbital angular momentum antenna according to claim 1, it is characterized in that: a plurality of annular microstrip line
Opening be respectively positioned on along annular radii extend straight line along.
3. leaky wave Microstrip Loop orbital angular momentum antenna according to claim 1, it is characterized in that: further include be covered in it is described micro-
With the loaded medium plate on line.
4. leaky wave Microstrip Loop orbital angular momentum antenna according to claim 1, it is characterized in that: the annular microstrip line setting
Two, respectively inner ring microstrip line and outer ring microstrip line.
5. leaky wave Microstrip Loop orbital angular momentum antenna according to claim 4, it is characterized in that: the week of the inner ring microstrip line
A length of 1.875 λ -2.125 λ, Zhou Changwei 2.875 λ -3.125 λ, λ of the outer ring microstrip line are the traveling wave wavelength of microstrip line.
6. leaky wave Microstrip Loop orbital angular momentum antenna according to claim 5, it is characterized in that: the week of the inner ring microstrip line
A length of 2 λ, 3 λ of Zhou Changwei of the outer ring microstrip line.
7. leaky wave Microstrip Loop orbital angular momentum antenna according to claim 1, it is characterized in that: the medium substrate is equipped with
Metallic vias, the both ends of the microstrip line respectively through metallic vias be set to medium substrate lower surface the coaxial feeder and
It is connected with load.
8. leaky wave Microstrip Loop orbital angular momentum antenna according to claim 1, it is characterized in that: the ground plane is by from medium
The metal base plate fixed with medium substrate limits below substrate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087151.8A CN109755736A (en) | 2019-01-29 | 2019-01-29 | Leaky wave Microstrip Loop orbital angular momentum antenna |
| PCT/CN2020/072831 WO2020156253A1 (en) | 2019-01-29 | 2020-01-17 | Leakage wave microstrip annular orbit angular momentum antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087151.8A CN109755736A (en) | 2019-01-29 | 2019-01-29 | Leaky wave Microstrip Loop orbital angular momentum antenna |
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| Publication Number | Publication Date |
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| CN109755736A true CN109755736A (en) | 2019-05-14 |
Family
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| CN201910087151.8A Pending CN109755736A (en) | 2019-01-29 | 2019-01-29 | Leaky wave Microstrip Loop orbital angular momentum antenna |
Country Status (2)
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| CN (1) | CN109755736A (en) |
| WO (1) | WO2020156253A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112548A (en) * | 2019-05-17 | 2019-08-09 | 厦门大学 | A kind of micro-strip paster antenna radiating quadravalence vortex wave beam |
| WO2020156253A1 (en) * | 2019-01-29 | 2020-08-06 | 广东曼克维通信科技有限公司 | Leakage wave microstrip annular orbit angular momentum antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017460A (en) * | 2017-05-17 | 2017-08-04 | 苏州市吴通天线有限公司 | The antenna sets system of wisdom equipment |
| JP2018046369A (en) * | 2016-09-13 | 2018-03-22 | 日本電信電話株式会社 | antenna |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098336B (en) * | 2015-09-14 | 2018-03-09 | 重庆大学 | A kind of Miniaturized multiband antenna based on asymmetric coplanar feed |
| WO2017188172A1 (en) * | 2016-04-25 | 2017-11-02 | 国立大学法人電気通信大学 | Wireless communication device and antenna device |
| CN108461922A (en) * | 2018-01-31 | 2018-08-28 | 南昌大学 | A kind of paster antenna generating multi-modal vortex wave |
| CN109755736A (en) * | 2019-01-29 | 2019-05-14 | 广东曼克维通信科技有限公司 | Leaky wave Microstrip Loop orbital angular momentum antenna |
-
2019
- 2019-01-29 CN CN201910087151.8A patent/CN109755736A/en active Pending
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2020
- 2020-01-17 WO PCT/CN2020/072831 patent/WO2020156253A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018046369A (en) * | 2016-09-13 | 2018-03-22 | 日本電信電話株式会社 | antenna |
| CN107017460A (en) * | 2017-05-17 | 2017-08-04 | 苏州市吴通天线有限公司 | The antenna sets system of wisdom equipment |
Non-Patent Citations (1)
| Title |
|---|
| DANG WEIGUO: "<Double-OAM-mode resistor loaded microstrip antenna with a top dielectric layer>", 《IEICE ELECTRONICS EXPRESS, VOL.15, NO.12, 1–6》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020156253A1 (en) * | 2019-01-29 | 2020-08-06 | 广东曼克维通信科技有限公司 | Leakage wave microstrip annular orbit angular momentum antenna |
| CN110112548A (en) * | 2019-05-17 | 2019-08-09 | 厦门大学 | A kind of micro-strip paster antenna radiating quadravalence vortex wave beam |
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| Publication number | Publication date |
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| WO2020156253A1 (en) | 2020-08-06 |
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Application publication date: 20190514 |