CN107732438A - A kind of broad beam circular polarisation transmit-receive sharing moonlet antenna - Google Patents
A kind of broad beam circular polarisation transmit-receive sharing moonlet antenna Download PDFInfo
- Publication number
- CN107732438A CN107732438A CN201710794321.7A CN201710794321A CN107732438A CN 107732438 A CN107732438 A CN 107732438A CN 201710794321 A CN201710794321 A CN 201710794321A CN 107732438 A CN107732438 A CN 107732438A
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- circular
- metal
- round platform
- antenna
- top surface
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Classifications
-
- 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
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
- H01P5/184—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being strip lines or microstrips
-
- 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
Abstract
The invention discloses a kind of broad beam circular polarisation transmit-receive sharing moonlet antenna, including circular metal bottom plate, metal round platform, circular radiation body and electric bridge；The metal round platform is hollow round table, metal round table surface accumulates big bottom surface and is fixed on circular metal bottom plate center, round metal countertop is fixed on circular radiation body bottom center, and the diameter of circular radiation body is more than round metal countertop diameter, less than the diameter of circular metal bottom plate, electric bridge is arranged in metal round platform, and is fixed on its top surface inwall.Present invention 1dBi gains in band limits can cover 85 ° ~ 85 ° of the angle of pitch（Wherein 0 ° of representative antennas axial direction）, 0 ° ~ 360 ° of azimuth spatial domain scope；With right-handed circular polarization port and left-hand circular polarization port, the circular polarisation transmit-receive sharing of antenna is realized；With small volume, it is in light weight, structure and processing technology are simple the advantages of.
Description
Technical field
The invention belongs to satellite antenna field, and in particular to a kind of broad beam circular polarisation transmit-receive sharing moonlet antenna.
Background technology
Low orbit satellite is obvious near with respect to for geo-synchronous orbit satellite, referring mainly to run on elliptic orbit and existing
The satellite in place, generally weight are small, the grapefruit satellite of short life.It is mainly used in mapping, detection, photograph and satellite telephony etc.
It is required that the near-earth that parsing precision is high, signal attenuation is small communicates and measurement occasion.Due to there is obvious perigee in low orbit satellite, now
It is very short that the electromagnetic wave of satellite launch reaches ground air line distance, is advantageous to antenna gain is relatively low, transmission power is less portable
Equipment is received and dispatched, therefore is often used as global position system（GPS）, the low-gain antenna equipment such as portable satellite phone communication letter
Source or relay station.High quality, Large Copacity, high-gain coverage rate are people to Modern Satellite communication requirement.
Satellite antenna uses circular polarization radiation more, and this has many good qualities：Faraday rotation caused by ionosphere can be eliminated
Effect；Polarization tracking is not needed；Dual-mode antenna uses different polarization rotation directions, can improve isolation between transmitting and receiving antenna to reduce
The design difficulty of receiver.According further to Theory of Electromagnetic Field, after circular polarisation electromagnetic wave incident to conducting plane, the pole of its back wave
Change oppositely oriented, therefore performance impact very little of the metallic reflection object for circular polarized antenna on star.
Multibeam antenna is very important one in Modern Satellite New Communication Technology, but multibeam antenna is that a height is answered
The antenna system of polygamy, there is complicated array format or the beam-forming network of complexity.
Four-arm spiral antenna has good hemisphere cardioid pattern, and its excellent broad beam and circular polarization characteristics are extensive
Applied to satellite communication, but in limited spatial volume, single helical antenna can not realize the transmitting-receiving of left-right-hand circular polarization
Share.
Microstrip antenna because its can it is conformal, in light weight, cost is low, be easily assembled into array, easily using microwave integrated circuit processing,
The features such as easily realizing circular polarisation, in the portable communication devices such as satellite communication, aerospace communications and mobile communication terminal all
It is widely used.But conventional microstrip antenna beamwidth is narrower, typically at 70 ° ~ 110 ° or so, and gain is relatively low during the low elevation angle.
Microstrip antenna realizes that circular polarisation substantially has single feedback, more feedbacks and polynary three major types method, and single method implementation of presenting is most simple, but bandwidth
Relative narrower；More feedback methods generally comprise double-fed and four feedbacks, and double-fed method realizes that network is relatively simple, and the feeding network of four feedback methods is more
It is complicated；Multivariate method can be regarded as antenna array, and physical dimension is big.
The content of the invention
It is an object of the invention to provide a kind of broad beam circular polarisation transmit-receive sharing moonlet antenna, solves when transmitting-receiving is same
The problems such as helical antenna is unable to transmit-receive sharing during frequency, microstrip antenna beam angle is narrower.
The technical solution for realizing the object of the invention is：A kind of broad beam circular polarisation transmit-receive sharing moonlet antenna, bag
Include circular metal bottom plate, metal round platform, circular radiation body and electric bridge；The metal round platform is hollow round table, and metal round table surface is accumulated
Big bottom surface is fixed on circular metal bottom plate center, and round metal countertop is fixed on circular radiation body bottom center, and circular spoke
The diameter of beam is more than round metal countertop diameter, and less than the diameter of circular metal bottom plate, electric bridge is arranged in metal round platform, and
It is fixed on its top surface inwall.
The circular radiation body includes the radiant body dielectric substrate that copper is covered on two sides, radiant body dielectric substrate bottom surface and round metal
Countertop is connected, and remove bottom surface not with the copper clad layers on metal round platform contact surface, the copper clad layers of radiant body dielectric substrate top surface
For circle, its diameter is less than round metal countertop diameter, as microband paste.
The electric bridge includes the electric bridge dielectric substrate that copper is covered on two sides, and top surface is fixed on the top surface inwall of metal round platform, bottom surface
Corrosion forms micro-strip electric bridge.
The micro-strip electric bridge uses 3dB directional coupling structures, including two first ports, two second ports and two
Probe, metal bosses top surface are provided with two through holes, and two first port signal amplitudes are equal and quadrature in phase, each first port
On be connected to a probe, probe passes through above-mentioned through hole, by probe to the radiant body circular microstrip patch to realize
Circular polarisation, two second port rotation directions of circularly polarised wave caused by are respectively right-handed circular polarization port and left-hand circular polarization end
Mouthful.
Compared with prior art, its remarkable advantage is the present invention：
（1）It is micro- to carry out broadening using extension radiant body dielectric substrate and the technology of three-dimensional ground structure and folded conductors wall by the present invention
Band antenna beamwidth, improves low elevation gain, realizes the preferable radiance of antenna.
（2）The present invention uses electric bridge form as the feed element of antenna to be fed to antenna element with double-fed circularly polarized.
Electric bridge can keep that two output port amplitudes are equal, phase differs 90 ° in broad frequency range, and terminal is matched load
Form, the influence of the zone of reflections is avoided, be advantageous to improve standing wave and axle ratio characteristic.And two second ports of electric bridge are respectively
The left-hand circular polarization port and right-handed circular polarization port of antenna, realize the transmit-receive sharing of antenna.
（3）The present invention has the advantages of small volume, in light weight, structure and processing technology are simple.
Brief description of the drawings
Fig. 1 is the structure three-dimensional figure of the broad beam circular polarisation transmit-receive sharing moonlet antenna of the present invention.
Fig. 2 is the sectional view of the broad beam circular polarisation transmit-receive sharing moonlet antenna of the present invention.
Fig. 3 is the top view of radiant body of the present invention.
Fig. 4 is the upward view of electric bridge of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of broad beam circular polarisation transmit-receive sharing moonlet antenna is small suitable for low rail
The wide beam circular polarized antenna of satellite system, more particularly to a kind of broad beam circular polarisation transmit-receive sharing little Wei for working in S frequency ranges
Star antenna.It includes circular metal bottom plate 1, metal round platform 2, circular radiation body 3 and electric bridge 4；The metal round platform 2 is open circles
Platform, forms three-dimensional ground structure and folded conductors wall, and the big underrun screw of the area of metal round platform 2 is fixed on circular metal bottom
The center of plate 1, the top surface of metal round platform 2 is screwed in the bottom center of circular radiation body 3, and the diameter of circular radiation body 3 is big
In the top surface diameter of metal round platform 2, less than the diameter of circular metal bottom plate 1, electric bridge 4 is arranged in metal round platform 2, and passes through screw
Its top surface inwall is fixed on, circular metal bottom plate 1 can be conformal with antenna mounting surface.
The circular radiation body 3 includes two sides and covers the radiant body dielectric substrate 31 of copper, the bottom surface of radiant body dielectric substrate 31 with
The top surface of metal round platform 2 is connected, and removes bottom surface and do not pushed up with the copper clad layers on the contact surface of metal round platform 2, radiant body dielectric substrate 31
The copper clad layers in face are circle, and its diameter is less than the top surface diameter of metal round platform 2, as microband paste 32.
The electric bridge 4 includes the electric bridge dielectric substrate 41 that copper is covered on two sides, and top surface is fixed on the top surface inwall of metal round platform 2,
Corrode to form micro-strip electric bridge 42 in bottom surface.
The micro-strip electric bridge 42 uses 3dB directional coupling structures, including two first ports, two second ports and two
Individual probe 5, the top surface of metal bosses 2 are provided with two through holes, and two first port signal amplitudes are equal and quadrature in phase, and each first
A probe 5 is connected on port, probe 5 passes through above-mentioned through hole, and the circular microstrip paster 32 of the radiant body 3 is given by probe 5
For feed to realize circular polarisation, two second port rotation directions of circularly polarised wave caused by are respectively the He of right-handed circular polarization port 6
Left-hand circular polarization port 7.
The dielectric constant 3.3 of radiant body dielectric substrate 31 of radiant body 3, thickness 3.048mm；The electric bridge dielectric substrate of electric bridge 4
41 dielectric constants 9.8, thickness 0.762mm.
The size of Circular microstrip patch 32 determines the broad beam circular polarisation transmit-receive sharing moonlet Antenna Operation in S frequencies
Section；Radiant body dielectric substrate 31 protrudes the top surface of metal round platform 2, this structure broadening microstrip antenna beam angle, improve it is low
Elevation gain, realize the preferable radiance of antenna.Floor is folded into cavity by the structure of metal round platform 2, has stretched antenna
The further broadening antenna beam of antenna pattern.It is double-fed circularly polarized to realize to antenna element feed by electric bridge 4, improve and stay
Ripple and axle ratio characteristic；Right-handed circular polarization port 6 and left-hand circular polarization port 7 can be respectively used to emission port and receiving port, real
The transmit-receive sharing of existing antenna, and have certain isolation between two ports.
By calculating, the present invention -1dBi gains in the range of the working frequency range can cover -85 ° of pitch orientation ~ 85 °
（Wherein 0 ° of representative antennas axial direction）, the spatial domain scope that 0 ° ~ 360 ° of azimuth, and 0dBi gain of the present invention at centre frequency is covered
Lid rate reaches 41.86%, and -2dBi gain coverage rates reach 50.33%, and -4dBi gain coverage rates reach 59.82%.
During using the broad beam circular polarisation transmit-receive sharing moonlet Antenna Operation, it is assumed that transmitting uses left-hand circular polarization, connects
Receipts use right-handed circular polarization, and when antenna transmission signal, current signal enters from left-hand circular polarization input port 7, will through electric bridge
It is equal first to circular microstrip paster 32 of the orthogonal electric signal by probe feed-in radiant body 3 that current signal is divided into two-way amplitude,
Current signal is changed into electromagnetic wave signal to radiate, and the electromagnetic wave signal is left-hand circular polarization.When antenna reception signal
When, the electromagnetic wave signal of reception is changed into current signal by the circular microstrip paster 32 of radiant body 3, through electric bridge by right-handed circular polarization
Signal exports from right-handed circular polarization port 6.
The broad beam circular polarisation transmit-receive sharing moonlet antenna, using extension radiant body dielectric substrate technology, being will be general
The dielectric substrate of logical microstrip antenna extends along axle, and keeps the earth plate and radiation patch size constancy of microstrip antenna, works as radiation
After energy feed antenna, the radiation of whole antenna radiated as caused by microband paste and the radiation superposition of the end of medium substrate and
Into because microband paste is most strong in normal orientation radiation, diectric antenna is then most strong in tangential direction radiation, so this structure reaches
Broadening microstrip antenna beam angle, the purpose for improving low elevation gain, realizing the preferable radiance of antenna are arrived.Meanwhile adopt
With the technology of three-dimensional ground structure and folded conductors wall, floor is folded into cavity, this can have to the antenna pattern of antenna
Stretching action, further broadening antenna beam.On the other hand, the present invention realizes that double-fed is justified by electric bridge to antenna element feed
Polarization, is advantageous to improve standing wave and axle ratio characteristic, at the same two second ports of electric bridge can be formed respectively left-hand circular polarization ripple and
Right-handed circular polarization ripple, realize the transmit-receive sharing of left-right-hand circular polarization.
Claims (4)
- A kind of 1. broad beam circular polarisation transmit-receive sharing moonlet antenna, it is characterised in that：Including circular metal bottom plate（1）, metal Round platform（2）, circular radiation body（3）And electric bridge（4）；The metal round platform（2）For hollow round table, metal round platform（2）Area is big Bottom surface is fixed on circular metal bottom plate（1）Center, metal round platform（2）Top surface is fixed on circular radiation body（3）Bottom center, and circle Shape radiant body（3）Diameter be more than metal round platform（2）Top surface diameter, less than circular metal bottom plate（1）Diameter, electric bridge（4）If Put in metal round platform（2）It is interior, and it is fixed on its top surface inwall.
- 2. broad beam circular polarisation transmit-receive sharing moonlet antenna according to claim 1, it is characterised in that：The circular spoke Beam（3）The radiant body dielectric substrate of copper is covered including two sides（31）, radiant body dielectric substrate（31）Bottom surface and metal round platform（2）Top Face is connected, and remove bottom surface not with metal round platform（2）Copper clad layers on contact surface, radiant body dielectric substrate（31）Top surface covers copper Layer is circle, and its diameter is less than metal round platform（2）Top surface diameter, as microband paste（32）.
- 3. broad beam circular polarisation transmit-receive sharing moonlet antenna according to claim 1, it is characterised in that：The electric bridge （4）The electric bridge dielectric substrate of copper is covered including two sides（41）, top surface is fixed on metal round platform（2）Top surface inwall, bottom surface corrosion shape Into micro-strip electric bridge（42）.
- 4. broad beam circular polarisation transmit-receive sharing moonlet antenna according to claim 3, it is characterised in that：The micro-strip electricity Bridge（42）Using 3dB directional coupling structures, including two first ports, two second ports and two probes（5）, metal is convex Platform（2）Top surface is provided with two through holes, and two first port signal amplitudes are equal and quadrature in phase, and one is connected in each first port Individual probe（5）, probe（5）Through above-mentioned through hole, pass through probe（5）To the radiant body（3）Circular microstrip paster（32）Feedback For electricity to realize circular polarisation, two second port rotation directions of circularly polarised wave caused by are respectively right-handed circular polarization port（6）With Left-hand circular polarization port（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710794321.7A CN107732438A (en) | 2017-09-06 | 2017-09-06 | A kind of broad beam circular polarisation transmit-receive sharing moonlet antenna |
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|---|---|---|---|
| CN201710794321.7A CN107732438A (en) | 2017-09-06 | 2017-09-06 | A kind of broad beam circular polarisation transmit-receive sharing moonlet antenna |
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| CN107732438A true CN107732438A (en) | 2018-02-23 |
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| CN201710794321.7A Pending CN107732438A (en) | 2017-09-06 | 2017-09-06 | A kind of broad beam circular polarisation transmit-receive sharing moonlet antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761502A (en) * | 2018-08-31 | 2018-11-06 | 广东圣大电子有限公司 | A kind of multimode GNSS test receivers with precise phase center |
| CN109473778A (en) * | 2018-10-23 | 2019-03-15 | 航天恒星科技有限公司 | A kind of Wideband circular polarized antenna |
| CN110890619A (en) * | 2019-12-29 | 2020-03-17 | 南京屹信航天科技有限公司 | Satellite-borne L-shaped wide beam antenna |
| CN110994128A (en) * | 2019-12-29 | 2020-04-10 | 南京屹信航天科技有限公司 | Satellite-borne L-frequency-band transmitting antenna |
| CN110994199A (en) * | 2019-11-01 | 2020-04-10 | 北京北木波谱科技有限公司 | Dual-polarized satellite navigation anti-interference antenna system and method |
| CN111916899A (en) * | 2020-08-21 | 2020-11-10 | 南京信息工程大学 | Stacked high-gain round-table dielectric resonator antenna |
| CN112201932A (en) * | 2020-09-09 | 2021-01-08 | 南京智能高端装备产业研究院有限公司 | Metal double-special-shaped cavity circular polarization satellite antenna based on 3D printing technology SLM (Selective laser melting) process |
| CN112768923A (en) * | 2020-12-30 | 2021-05-07 | 中国航天科工集团八五一一研究所 | Double-frequency wide-beam microstrip antenna working in S wave band |
| CN113178693A (en) * | 2021-05-13 | 2021-07-27 | 上海大学 | Circular polarization small antenna with inverted mushroom nail structure |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761502A (en) * | 2018-08-31 | 2018-11-06 | 广东圣大电子有限公司 | A kind of multimode GNSS test receivers with precise phase center |
| CN108761502B (en) * | 2018-08-31 | 2024-02-02 | 广东圣大电子有限公司 | Multimode GNSS test receiver with accurate phase center |
| CN109473778A (en) * | 2018-10-23 | 2019-03-15 | 航天恒星科技有限公司 | A kind of Wideband circular polarized antenna |
| CN110994199A (en) * | 2019-11-01 | 2020-04-10 | 北京北木波谱科技有限公司 | Dual-polarized satellite navigation anti-interference antenna system and method |
| CN110890619A (en) * | 2019-12-29 | 2020-03-17 | 南京屹信航天科技有限公司 | Satellite-borne L-shaped wide beam antenna |
| CN110994128A (en) * | 2019-12-29 | 2020-04-10 | 南京屹信航天科技有限公司 | Satellite-borne L-frequency-band transmitting antenna |
| CN110890619B (en) * | 2019-12-29 | 2024-03-22 | 南京屹信航天科技有限公司 | Satellite-borne L-shaped wide beam antenna |
| CN111916899A (en) * | 2020-08-21 | 2020-11-10 | 南京信息工程大学 | Stacked high-gain round-table dielectric resonator antenna |
| CN112201932A (en) * | 2020-09-09 | 2021-01-08 | 南京智能高端装备产业研究院有限公司 | Metal double-special-shaped cavity circular polarization satellite antenna based on 3D printing technology SLM (Selective laser melting) process |
| CN112201932B (en) * | 2020-09-09 | 2022-06-07 | 南京智能高端装备产业研究院有限公司 | Metal double-special-shaped cavity circular polarization satellite antenna based on 3D printing technology SLM (Selective laser melting) process |
| CN112768923A (en) * | 2020-12-30 | 2021-05-07 | 中国航天科工集团八五一一研究所 | Double-frequency wide-beam microstrip antenna working in S wave band |
| CN113178693A (en) * | 2021-05-13 | 2021-07-27 | 上海大学 | Circular polarization small antenna with inverted mushroom nail structure |
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