CN105591193B - Double frequency round polarized antenna - Google Patents
Double frequency round polarized antenna Download PDFInfo
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- CN105591193B CN105591193B CN201610099961.1A CN201610099961A CN105591193B CN 105591193 B CN105591193 B CN 105591193B CN 201610099961 A CN201610099961 A CN 201610099961A CN 105591193 B CN105591193 B CN 105591193B
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- frequency
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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
-
- 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
- H01Q13/02—Waveguide horns
-
- 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
- H01Q13/10—Resonant slot antennas
- H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
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- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of double frequency round polarized antenna, the antenna includes the conical horn mouth, low-frequency resonant chamber and the high-frequency resonant cavity that set from top to bottom successively, is corresponded in the side wall of low-frequency resonant chamber and high-frequency resonant cavity and is fixed with low frequency polarization probe and high frequency polarized probe；Two resonators are elliptic cylindrical shape, and its transverse is conllinear with corresponding probe respectively；The transverse of two resonators is mutually perpendicular in the projection of two cavity interfaces.The antenna impedance band of the present invention is wider than 20%, in bandwidth gain be more than 8.5dB, radiation efficiency is more than 81.5%, and the axial ratio bandwidth less than 3dB is more than 25%, 30% is more than in port isolation bandwidth, the center frequency ratio at double frequency end is 1.5.Whole antenna structure is simple, compact, and radiation efficiency is high, double frequency round polarized radiation, can be used as planar array radiating element, realizes that high efficiency narrow beam radiates.
Description
Technical field
The present invention relates to high efficiency circular polarised array antenna in satellite communication, field of microwave communication, the skill of the Antenna Design
Art mainly includes：Shared aperture double frequency round polarized technology, high-isolation technology.
Background technology
Increasingly develop at present in communications band to high band, especially in Ku, Ka wave band, its frequency determines bandwidth ratio work
In L, the antenna of S-band, the requirement antenna in this frequency range that works has small size, high gain, the characteristic of spot beam, especially, its
It is distant, it is necessary to antenna two-frequency operation to receive and dispatch working frequency range, and needs circular polarization radiation, realizes that the antenna of above-mentioned performance is main
There are following several antenna forms, but respectively there are advantage and disadvantage.
1st, Waveguide slot antenna：The form antenna is cracked in waveguide broadside or narrow side, generally there is traveling wave, standing wave two
Kind of array format, but the gain in radiating element gap is relatively low, generally only 7dB or so, due to for series feed form, in bandwidth
There is frequency and sweep phenomenon, with increasing for working frequency, it is desirable to which machining accuracy is also higher, need to process system by higher welding procedure
Make, yield rate is relatively low, causes cost higher, and realizes that double frequency round polarized Shared aperture radiates, and difficulty is larger.
2nd, micro-strip paster antenna, the antenna form have that profile is low, can integrate active device, radiating element and net can be achieved
Network integrated design, but the dielectric loss of antenna is larger, and leaky wave effect be present, antenna element gain is low, feeding network damage
Consumption is big, does not utilize and realizes that high-gain aerial designs.
3rd, reflector antenna, the form antenna have good radio-frequency performance in Ka frequency ranges, differential loss is low, radiation efficiency is high,
Realize that circular polarization radiation relative skill is relatively simple, but the form antenna physical size is larger, does not apply in some narrow spaces
Occasion.
4. lens antenna, the antenna form is similar with reflector antenna, generally use feed irradiation medium ball, medium cake
Deng, wave beam is focused on, realizes the purpose of high-gain irradiation, but same with reflector antenna oversized with antenna volume, nothing
Method realizes the function of wave beam adjustment.
The content of the invention
A kind of double frequency round polarized antenna is provided it is an object of the invention to avoid the weak point in above-mentioned background technology,
It is a feature of the present invention that double frequency round polarized radiates, loss is low, and radiation efficiency is high, and high-isolation is compact-sized.
What the present invention was realized in：Double frequency round polarized antenna, including conical horn mouth 1, low-frequency resonant chamber 2, harmonic high frequency
Shake chamber 3, high frequency polarized probe 4 and low frequency polarization probe 5, the upper shed of low-frequency resonant chamber 2 and the under shed phase of conical horn mouth 1
Connect, low frequency polarization probe 5 is fixed with the side wall of low-frequency resonant chamber 2；The upper shed of high-frequency resonant cavity 3 and low-frequency resonant chamber 2
Under shed connects, and high frequency polarized probe 4 is fixed with the side wall of high-frequency resonant cavity 3；Low-frequency resonant chamber 2 and high-frequency resonant cavity 3 are equal
For elliptic cylindrical shape；Low frequency polarization probe 5 is conllinear with the transverse of low-frequency resonant chamber 2, high frequency polarized probe 4 and high-frequency resonant
The transverse of chamber 3 is conllinear；The friendship of the transverse of low-frequency resonant chamber 2 and the transverse of high-frequency resonant cavity 3 in two cavitys
Interface is perpendicular.
Wherein, a diameter of 0.65 λ of the feed port of described conical horn mouth 10；Wherein, λ0For the center of working frequency range
Wavelength corresponding to frequency.
Wherein, the length of the transverse of low-frequency resonant chamber 2 is less than the feed port diameter of conical horn mouth 1.
Wherein, the length of the transverse of described low-frequency resonant chamber 2 is 0.525 λl, the length of short axle is 0.485 λl；It is high
The length of the transverse of frequency resonator 3 is 0.5 λh, the length of short axle is 0.42 λh；Wherein, λlFor the centre frequency of low-frequency range
Corresponding wavelength, λhFor the centre frequency corresponding wavelength of high band.
Wherein, the length that described low frequency polarization probe 5 enters low-frequency resonant chamber 2 is 0.22 λl, apart from low-frequency resonant chamber 2
Bottom surface be 0.17 λl；The length that high frequency polarized probe 4 enters high-frequency resonant cavity 3 is 0.2 λh, apart from the bottom of high-frequency resonant cavity 3
Face is 0.11 λh；Wherein, λlFor the centre frequency corresponding wavelength of low-frequency range, λhFor the centre frequency corresponding wavelength of high band.
Wherein, high band centre frequency corresponding wavelength λhWith low-frequency range centre frequency corresponding wavelength λlThe ratio between be：λh/λl=1/
1.5。
The present invention relatively has the following advantages with background technology：
1st, double frequency round polarized antenna of the invention is by conical horn mouth 1, low-frequency resonant chamber 2, high-frequency resonant cavity 3, high frequency pole
Change probe 4 and low frequency polarization probe 5 form, antenna impedance band is wider than 20%, in bandwidth gain be more than 8.5dB, radiation efficiency is big
In 81.5%, the axial ratio bandwidth less than 3dB is more than 25%, is more than 30% in port isolation bandwidth, the center frequency ratio of two-band is
1.5 is more suitable.
2nd, the whole antenna structure of the present invention is simple, compact, and radiation efficiency is high, double frequency round polarized radiation, can be used as planar array
Row radiating element, realize that high efficiency narrow beam radiates.
Brief description of the drawings
Fig. 1 is three dimensional structure diagram of the present invention.
Fig. 2 is the perspective diagram of the present invention.
Embodiment
Reference picture 1, Fig. 2, the present invention is by conical horn mouth 1, low-frequency resonant chamber 2, high-frequency resonant cavity 3, high frequency polarized probe 4
Formed with low frequency polarization probe 5, Fig. 1 is three dimensional structure diagram of the present invention, and Fig. 2 is perspective diagram inside the present invention, is provided
Relative position relation and internal structure composition between each part.
Conical horn mouth 1 is located at the superiors, and its effect is reception, transmission of electromagnetic signals, and according to certain spatial power
Wave cover requirement, realizes the design of directional diagram.The present invention uses the conical horn of gradual change type, ensure that resonator and horn mouth
Impedance matching, generally take its a diameter of caliber size of radiation port of conical horn mouth, caliber size is 0.85 λ0（λ0For work
The centre frequency corresponding wavelength of working frequency）, can so obtain of a relatively high unit radiation gain, preferable space impedance
Match somebody with somebody, turn avoid the array pattern when group battle array designs and higher graing lobe occur；The feed port of conical horn mouth it is a diameter of
0.65λ0, which ensure that the transition good with low-frequency resonant chamber 2, its size is slightly larger than the corresponding transverse of low-frequency resonant chamber 2
Size, the bottom of conical horn mouth 1 are connected with low-frequency resonant chamber 2.Conical horn mouth 1 could alternatively be pyramid loudspeaker mouth.
Low-frequency resonant chamber 2 is in elliptic cylindrical shape, and it is to be formed to revolve in its intracavitary using the excitation of low frequency polarization probe that it, which is acted on,
Transition, it is radiated free space and just forms circularly polarised wave.The major axis of low-frequency resonant chamber 2 generally takes the λ of bore 0.525l（λlFor low frequency
Wavelength corresponding to section centre frequency）, minor axis dimension is 0.485 λl；Low frequency polarization probe 5 is conllinear with the major axis of low-frequency resonant chamber 2,
The size that its middle probe enters metallic cavity is 0.22 λl, it is 0.17 λ apart from the bottom of low-frequency resonant chamber 2l。
High-frequency resonant cavity 3 is similarly elliptic cylindrical shape, but size is less than low-frequency resonant chamber 2, it is therefore an objective to in its intracavitary
The rotating field higher than low-frequency resonant chamber cavity frequency is formed, is then radiate by same conical horn mouth 1.High-frequency resonant cavity
3 are connected with the bottom of low-frequency resonant chamber 2, and the transverse of its corresponding transverse and low-frequency resonant chamber 2 is in both interfaces
Projection be in 90 °.The transverse of high-frequency resonant cavity 3 generally takes the λ of bore 0.5h（λhFor ripple corresponding to high band centre frequency
It is long）, minor axis dimension is 0.42 λh；High frequency polarized probe 4 is conllinear with its major axis, and the size that its middle probe enters metallic cavity is
0.2λh, it is 0.11 λ apart from the bottom of high-frequency resonant cavity 3h；Usual low-and high-frequency wavelength ratio λh/λl=1/1.5 is more suitable, mutually it
Between influence to antenna performance it is smaller.
High frequency polarized probe 4 and low frequency polarization probe 5 is separately fixed in the resonator side wall of two frequency ranges, for encouraging
With respect to the signal of frequency range.
Research is found：According to above-mentioned antenna structure dimensional configurations, antenna axial ratio is less than 2dB band a width of 21%, antenna polarization
It is more than 45% in port isolation bandwidth, the aperture radiation efficiency of two-band is more than 75%.
Operation principle of the present invention is as follows：When transmitting a signal, emitter connection coaxial switch transmission signal, low-frequency resonant
Respective frequencies have encouraged rotating electric field in chamber, form circular polarization radiation ripple, free space is radiated via conical horn mouth 1；It is high
Frequency polarized probe 4 has encouraged the high-frequency signal of high-frequency resonant cavity 3, via the resonant cavity of low-frequency resonant chamber, finally by circular cone loudspeaker
Mouth 1 is radiated free space.
Claims (6)
1. double frequency round polarized antenna, including conical horn mouth（1）, it is characterised in that：Also include low-frequency resonant chamber（2）, harmonic high frequency
Shake chamber（3）, high frequency polarized probe（4）With low frequency polarization probe（5）, low-frequency resonant chamber（2）Upper shed and conical horn mouth（1）
Under shed connect, low-frequency resonant chamber（2）Side wall on be fixed with low frequency polarization probe（5）；High-frequency resonant cavity（3）Upper shed
With low-frequency resonant chamber（2）Under shed connect, high-frequency resonant cavity（3）Side wall on be fixed with high frequency polarized probe（4）；Low frequency is humorous
Shake chamber（2）And high-frequency resonant cavity（3）It is elliptic cylindrical shape；Low frequency polarization probe（5）With low-frequency resonant chamber（2）Transverse
Collinearly, high frequency polarized probe（4）With high-frequency resonant cavity（3）Transverse it is conllinear；Low-frequency resonant chamber（2）Transverse with it is high
Frequency resonator（3）Transverse it is perpendicular in the interface of two cavitys.
2. double frequency round polarized antenna according to claim 1, it is characterised in that：Described conical horn mouth（1）Feed
A diameter of 0.65 λ of port0；Wherein, λ0For wavelength corresponding to the centre frequency of working frequency range.
3. double frequency round polarized antenna according to claim 1, it is characterised in that：Low-frequency resonant chamber（2）Transverse
Length is less than conical horn mouth（1）Feed port diameter.
4. double frequency round polarized antenna according to claim 2, it is characterised in that：Described low-frequency resonant chamber（2）Ellipse
The length of major axis is 0.525 λl, the length of short axle is 0.485 λl；High-frequency resonant cavity（3）The length of transverse be 0.5 λh,
The length of short axle is 0.42 λh；Wherein, λlFor the centre frequency corresponding wavelength of low-frequency range, λhIt is corresponding for the centre frequency of high band
Wavelength.
5. double frequency round polarized antenna according to claim 4, it is characterised in that：Described low frequency polarization probe（5）Into
Low-frequency resonant chamber（2）Length be 0.22 λl, apart from low-frequency resonant chamber（2）Bottom surface be 0.17 λl；High frequency polarized probe（4）Enter
Enter high-frequency resonant cavity（3）Length be 0.2 λh, apart from high-frequency resonant cavity（3）Bottom surface be 0.11 λh。
6. the double frequency round polarized antenna according to claim 4 or 5, it is characterised in that：High band centre frequency corresponding wavelength λh
With low-frequency range centre frequency corresponding wavelength λlThe ratio between be：λh/λl=1/1.5。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610099961.1A CN105591193B (en) | 2016-02-24 | 2016-02-24 | Double frequency round polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610099961.1A CN105591193B (en) | 2016-02-24 | 2016-02-24 | Double frequency round polarized antenna |
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| Publication Number | Publication Date |
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| CN105591193A CN105591193A (en) | 2016-05-18 |
| CN105591193B true CN105591193B (en) | 2018-03-13 |
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| CN201610099961.1A Active CN105591193B (en) | 2016-02-24 | 2016-02-24 | Double frequency round polarized antenna |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108737796A (en) * | 2017-04-17 | 2018-11-02 | 东莞百电子有限公司 | A kind of novel combination S frequency ranges and KU frequency range tuner structures |
| CN107359405B (en) * | 2017-07-27 | 2023-04-07 | 中国电子科技集团公司第五十四研究所 | Dual-port feed type array antenna |
| CN109066048B (en) * | 2018-07-03 | 2020-04-17 | 东莞理工学院 | High-gain circularly polarized antenna |
| CN109672022B (en) * | 2019-02-27 | 2024-04-09 | 中国电子科技集团公司第五十四研究所 | Conical horn antenna |
| CN113161752A (en) * | 2021-04-12 | 2021-07-23 | 广州智讯通信系统有限公司 | Circularly polarized back cavity slot antenna |
| CN113178687B (en) * | 2021-04-13 | 2022-10-25 | 西安交通大学 | Circularly polarized waveguide slot antenna |
| CN113690623B (en) * | 2021-08-30 | 2022-11-08 | 合肥工业大学 | Double-frequency circular polarization hexagonal horn antenna for improving aperture efficiency of array surface |
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| CN102394374A (en) * | 2011-06-29 | 2012-03-28 | 西安空间无线电技术研究所 | Double frequency feed source |
| CN102956939A (en) * | 2011-08-23 | 2013-03-06 | 百一电子股份有限公司 | Dual-frequency wave guide tube |
| CN104051857A (en) * | 2013-03-12 | 2014-09-17 | 电子科技大学 | Novel small-caliber circular polarization high-efficiency unit |
| CN205488520U (en) * | 2016-02-24 | 2016-08-17 | 中国电子科技集团公司第五十四研究所 | Double frequency circularly polarized antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725705A (en) * | 1980-07-23 | 1982-02-10 | Nec Corp | Antenna having asymmetrical rotary radial beam |
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2016
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394374A (en) * | 2011-06-29 | 2012-03-28 | 西安空间无线电技术研究所 | Double frequency feed source |
| CN102956939A (en) * | 2011-08-23 | 2013-03-06 | 百一电子股份有限公司 | Dual-frequency wave guide tube |
| CN104051857A (en) * | 2013-03-12 | 2014-09-17 | 电子科技大学 | Novel small-caliber circular polarization high-efficiency unit |
| CN205488520U (en) * | 2016-02-24 | 2016-08-17 | 中国电子科技集团公司第五十四研究所 | Double frequency circularly polarized antenna |
Non-Patent Citations (1)
| Title |
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| A novel compact circularly polarized horn antenna;Yangzhen Huang等;《Antennas and Propagation Society International Symposium(APSURSI),2014 IEEE》;20140711;全文 * |
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