CN107785656A - A kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks - Google Patents
A kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks Download PDFInfo
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- CN107785656A CN107785656A CN201710844428.8A CN201710844428A CN107785656A CN 107785656 A CN107785656 A CN 107785656A CN 201710844428 A CN201710844428 A CN 201710844428A CN 107785656 A CN107785656 A CN 107785656A
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- dielectric
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- oam
- paster
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
- H01Q9/0435—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave using two feed points
-
- 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
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/04—Multimode antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0464—Annular ring patch
Abstract
The present invention relates to a kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks.Antenna is made up of four layers of pcb board：Top layer, intermediate layer, Inner electric layer and bottom.Top layer is arranged on the front of dielectric-slab 1., is made up of annulus paster r1 and r2；Intermediate layer be arranged on dielectric-slab 1. and dielectric-slab 2. between, be made up of coupling signal wire s1, s2, s3 and s4；Inner electric layer be arranged on dielectric-slab 2. and dielectric-slab 3. between, used as ground plane；Bottom is arranged on the bottom surface of dielectric-slab 3., is made up of two 3dB mixing feeding networks f1 and f2.Feeding network is connected with coupling signal wire by metalized blind vias v1, v2, v3 and v4.Electrical isolation is kept between blind hole and Inner electric layer.Input port p1, p1, p2 and p2 can each encourage the OAM wave beams that pattern count is 1,1,2 and 2 respectively.The invention is expected to be applied to OAM wireless communication technologys, so as to improve the spectrum efficiency of wireless communication system and power system capacity.
Description
Technical field
Patent of the present invention belongs to wireless communication technology field, and in particular to one kind is based on annulus paster and 3dB hybrid networks
Broadband OAM antennas.
Background technology
OAM, i.e. orbital angular momentum, it is considered to be one of possible accepted standard transmission technology of future communication systems, reason
It is mutually orthogonal between different OAM patterns, thus provides possibility for the multi-channel Technology based on OAM.It is reported that adopt
320 more than Tbit/s data transmission capabilities can be easily reached with the communication system of OAM multiplexing technologies, the availability of frequency spectrum is reachable
230 bit-1·s-1·Hz-1, far above currently commercial LTE technologies, (spectrum efficiency is about in 16 bit-1·s-1·Hz-1Left and right).
Certainly, the matter of utmost importance that development OAM correlation techniques face is how efficiently to generate OAM wave beams.At present, OAM is penetrated
The generating mode of frequency wave beam mainly divides following several：1. phased array, spiral phase is constructed by the current phase for adjusting array element
Location factor exp (jlφ), phased array can generate all-N/2<l<N/2 OAM wave beams, hereφ、lRepresented respectively with N
Azimuth, pattern count and array number.This method pattern refactoring ability is strong, but needs complicated feed circuit, realizes that difficulty is big.2.
Parabola antenna is corrected, it introduces a radial slot on the paraboloid of revolution, and by Archimedian screw rule in parabola
Extended a distance on axis direction, make feed radiate circular polarisation radio wave after parabolic reflector in its wavefront
Form helical structure.This method is realized simply, but non-mode is reconstitution.3. annular travelling-wave aerial, the radiation circle of this antenna
Ring girth is equal to the integral multiple of effective wavelength, electric current on ring is in traveling-wave mode using two-terminal feeding, so as to generate OAM ripples
Beam.This method is realized simply, possesses certain pattern refactoring ability, but bandwidth of operation is very narrow.4. circularly-polarized patch antenna：According to
Chamber film theory, resonance is in TMmnThe paster of pattern can radiate OAM wave beams under traveling-wave mode.This method design is simple, possesses 2
The re-configurability of individual pattern, but bandwidth of operation is narrow, and structural robustness is poor.5. surpass surface reflector, this super surface can will be by
The incident circularly polarised wave of certain angle is converted into the OAM wave beams with AD HOC number, shortcoming be the size of reflector often very
Greatly.
To sum up, the research of OAM generating means has important practical significance with design, but the microwave section OAM reported at present
Generating means, which exist, realizes the problems such as difficulty is big, bandwidth of operation is narrow, pattern refactoring ability, structural robustness difference, therefore
It is necessary to continue to explore alternative OAM antenna design techniques and method.Different from preceding method, the present invention proposes a kind of base
In annular paster and the broadband OAM antennas of 3dB hybrid networks, the antenna structure is simple, easy to implement, to radio communication especially
It is that following ultrahigh speed radio communication has great importance.
The content of the invention
A kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks.Antenna is made up of four layers of pcb board：Top layer,
Intermediate layer, Inner electric layer and bottom.Top layer is arranged on the front of dielectric-slab 1., is made up of annulus paster r1 and r2；Intermediate layer
Be arranged on dielectric-slab 1. and dielectric-slab 2. between, be made up of coupling signal wire s1, s2, s3 and s4；Inner electric layer is arranged on dielectric-slab
2. and dielectric-slab 3. between, used as ground plane；Bottom is arranged on the bottom surface of dielectric-slab 3., by two 3dB mixing transmission networks
Network f1 and f2 are formed.Feeding network is connected with coupling signal wire by metalized blind vias v1, v2, v3 and v4.Blind hole and Inner electric layer
Between keep electrical isolation.It is 1, -1,2 and -2 that feed port p1,-p1, p2 and-p2, which can each encourage pattern count respectively,
OAM wave beams.
Described 3dB hybrid networks f1 and f2 effect is each self-generating a pair of orthogonal signal, and these orthogonal signalling pass through
Blind hole v1, v2, v3 and v4 of metallization are directed to lotus root zygonema, and by lotus root zygonema in a coupled manner by pumping signal feed-in
Annular paster, finally make OAM wave beam of the annular paster radiation with AD HOC number.
Specifically, when being individually for one of port p1 ,-p1, p2 and-p2 access electric feed signal, then antenna will individually
The OAM wave beams that ground generation associative mode number is 1, -1,2 and -2；And due to the inherent orthogonality between OAM patterns, different mode
Between influence each other and can ignore, therefore antenna also allows p1 ,-p1, p2 and-p2 ports while accesses electric feed signal, now
Four kinds of OAM wave beams that generation mode number simultaneously is 1, -1,2 and -2 by antenna, they respectively can be with the data of transmission of one line independence
Signal, or supply independent user and conduct interviews.
Described annular paster, therefore can pole due to being fed in a coupled manner using a pair of orthogonal signal
The bandwidth of operation of the earth extended antenna, at the same time, because different input ports can generate different OAM wave beams, therefore
It is believed that the antenna is extremely realizing the function of pattern refactoring on compact structure.
Described annulus paster, each such annular paster have corresponded to a pair of input ports, a 3dB mixing electricity
Road, a pair of metalized blind vias and a pair of coupling signal wires.
A kind of described broadband OAM antennas based on annulus paster and 3dB hybrid networks, its structure have excellent expand
Malleability, i.e., according to being actually needed, the quantity of annular paster can be neatly increased or decreased, only need to be in adjustment annular paster
Quantity while, correspondingly increase and decrease 3dB hybrid networks, metalized blind vias and coupling signal wire.
Brief description of the drawings
Fig. 1 is the structural representation of inventive antenna.
Fig. 2 is the top view of inventive antenna.
Fig. 3 is top view of the inventive antenna after top layer and dielectric-slab has been concealed 1..
Fig. 4 is the bottom view of inventive antenna.
When Fig. 5 is that inventive antenna works in pattern 1 and 2 respectively, the phase place change situation of radiated electric field.
When Fig. 6 is that inventive antenna works in OAM patterns -2, the return loss of antenna.
Embodiment
Invention is further described below in conjunction with the accompanying drawings, but limit is applied to the present invention not in a manner of any materialization
System, any change or optimization that industry practitioner can be made based on present invention guidance, belongs to protection model of the invention
Enclose.
The overall antennas sizes of examples of implementation are 140mm × 60mm × 3.2mm, and what 3 dielectric-slabs used is all that dielectric is normal
The FR4 materials of number 4.6, the thickness of dielectric-slab 1. and 2. are 1mm, and the thickness of dielectric-slab 3. is 1.2mm, and they are with semifastening sheet to press
The mode of conjunction is coupled to final integral slab.Specifically as shown in Figure 1.
The radius of annular paster is 10.6mm and 21.2mm respectively in examples of implementation, and their line width is 3.66mm, coupling
The line width for closing signal wire is 2.2mm, and the narrow side of bottom 3dB networks and the line width of broadside are 2.18mm and 3.76mm respectively, blind hole
A diameter of 1.3mm, the circular isolated area diameter in Inner electric layer is 4mm.Specifically as shown in figs 2-4.
As shown in figure 5, wherein dotted line and solid line represent respectively when input port p1 and p2 individually by access electric feed signal when,
Situation of change of the wavefront of antenna institute radiation beam in the plane perpendicular to the direction of propagation, it can be seen that dotted line is within 2 π cycle
Wave-front phase has been mutated once, and solid line SPA sudden phase anomalies 2 times within the same cycle, illustrates when p1 is energized, antenna life
Into the OAM wave beams that pattern count is 1, and when p2 is individually energized, antenna generates the OAM wave beams that pattern count is 2.
Be as shown in Figure 6 example Antenna Operation when pattern -2, the return loss plot of antenna, it can be seen that 2.14GHz ~
The return loss of 2.92GHz frequency range internal antenna is both less than -10dB, and the impedance matching bandwidth of antenna has reached 30.83%,
It is to be far above the traditional round annular paster antenna often bandwidth less than 4%, has reached the requirement of wideband operation.
The invention is expected to be applied in OAM wireless communication technologys, so as to improve the spectrum efficiency of wireless communication system and be
System capacity.
Claims (4)
1. a kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks, it is made up of four layers of pcb board：Top layer, centre
Layer, Inner electric layer and bottom；Top layer is arranged on the front of dielectric-slab 1., is made up of annulus paster r1 and r2；Intermediate layer is set
Dielectric-slab 1. and dielectric-slab 2. between, be made up of coupling signal wire s1, s2, s3 and s4；Inner electric layer be arranged on dielectric-slab 2. and
Dielectric-slab 3. between, used as ground plane；Bottom is arranged on the bottom surface of dielectric-slab 3., by two 3dB mixing feeding networks f1
Formed with f2.
2. a kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks according to claim 1, its feature exist
In：Feeding network is connected with coupling signal wire by metalized blind vias v1, v2, v3 and v4, and is kept between blind hole and Inner electric layer
Electrical isolation.
3. a kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks according to claim 1, its feature exist
In：The excitation of annular paster is realized in a coupled manner by the signal wire in intermediate layer, that is, the signal wire fed not with circle
Annular paster directly connects, to widen the impedance bandwidth of antenna.
4. a kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks according to claim 1, its feature exist
In：The structure of antenna has good autgmentability, i.e. the quantity of annular paster can increase or reduce as needed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844428.8A CN107785656A (en) | 2017-09-19 | 2017-09-19 | A kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844428.8A CN107785656A (en) | 2017-09-19 | 2017-09-19 | A kind of broadband OAM antennas based on annulus paster and 3dB hybrid networks |
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| CN107785656A true CN107785656A (en) | 2018-03-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378581A (en) * | 2018-11-22 | 2019-02-22 | 厦门大学 | A kind of circular microstrip paster antenna radiating double frequency whirlpool wave |
| CN110112548A (en) * | 2019-05-17 | 2019-08-09 | 厦门大学 | A kind of micro-strip paster antenna radiating quadravalence vortex wave beam |
Citations (7)
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| GB0401084D0 (en) * | 2004-01-19 | 2004-02-18 | Roke Manor Research | Parabolic reflector |
| CN104617384A (en) * | 2015-01-26 | 2015-05-13 | 华中科技大学 | Patch antenna for generating vortex electric wave |
| CN105071034A (en) * | 2015-08-27 | 2015-11-18 | 宁夏大学 | Multi-modal orbital angular momentum (OAM) vortex electromagnetic wave microstrip array antenna |
| CN204947092U (en) * | 2015-08-27 | 2016-01-06 | 云南大学 | A kind of OAM microstrip antenna and OAM radio transmitting device |
| CN205178005U (en) * | 2015-11-30 | 2016-04-20 | 云南大学 | Circular microstrip paster OAM antenna |
| US20160111781A1 (en) * | 2013-07-01 | 2016-04-21 | Marco Celso Matteoni | System for generation and management of orbital angular momentum in an electromagnetic radiation by means of special lens |
| CN105552556A (en) * | 2015-12-28 | 2016-05-04 | 西安电子科技大学 | Orbital angular momentum vortex wave beam generation apparatus and method |
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2017
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| GB0401084D0 (en) * | 2004-01-19 | 2004-02-18 | Roke Manor Research | Parabolic reflector |
| US20160111781A1 (en) * | 2013-07-01 | 2016-04-21 | Marco Celso Matteoni | System for generation and management of orbital angular momentum in an electromagnetic radiation by means of special lens |
| CN104617384A (en) * | 2015-01-26 | 2015-05-13 | 华中科技大学 | Patch antenna for generating vortex electric wave |
| CN105071034A (en) * | 2015-08-27 | 2015-11-18 | 宁夏大学 | Multi-modal orbital angular momentum (OAM) vortex electromagnetic wave microstrip array antenna |
| CN204947092U (en) * | 2015-08-27 | 2016-01-06 | 云南大学 | A kind of OAM microstrip antenna and OAM radio transmitting device |
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Non-Patent Citations (3)
| Title |
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| ZONGTANG ZHANG等: ""Generation of multiple orbital angular momentum (OAM) Modes with a circularly polarized multimode patch antenna"", 《2016 IEEE MTT-S INTERNATIONAL WIRELESS SYMPOSIUM (IWS)》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378581A (en) * | 2018-11-22 | 2019-02-22 | 厦门大学 | A kind of circular microstrip paster antenna radiating double frequency whirlpool wave |
| 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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Application publication date: 20180309 |