CN205029013U - Low profile circular polarization microstrip antenna - Google Patents
Low profile circular polarization microstrip antenna Download PDFInfo
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- CN205029013U CN205029013U CN201520761955.9U CN201520761955U CN205029013U CN 205029013 U CN205029013 U CN 205029013U CN 201520761955 U CN201520761955 U CN 201520761955U CN 205029013 U CN205029013 U CN 205029013U
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- circular polarization
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- microstrip antenna
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- 230000010287 polarization Effects 0.000 title claims abstract description 39
- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 239000000523 sample Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 18
- 239000011229 interlayer Substances 0.000 claims description 10
- 239000004411 aluminium Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 abstract description 6
- 230000010354 integration Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Waveguide Aerials (AREA)
Abstract
The utility model discloses a low profile circular polarization microstrip antenna relates to communication, observing and controlling field. This microstrip antenna includes upper dielectric plate 1, middle layer media board 2, bottom dielectric plate 3, reflection aluminum plate 4 and dielectric cylinder 7, and the upper surface quadrature of middle layer media board 2 is provided with two circular capacitor sheet 9, and two circular capacitor sheet 9's centre of a circle projection is located 6 constitution regions of intermediate level paster, and equal geometric centre of skew intermediate level paster 6, two circular capacitor sheet 9 all link to each other through two output one -to -ones of metal probe 8 with circular polarization feed network 12. The utility model discloses it is that the standing wave bandwidth is wide, the wide microstrip antenna structure of axial ratio bandwidth to require to design to polarization purity, installation space according to communicating, observing and controling, the utility model discloses still have characteristics such as the profile is low, the size is little, easy integration, the utility model discloses the low profile circular polarized antenna's of aircraft carrier high performance manufacturing in specially adapted communication, the observing and controlling system.
Description
Technical field
The utility model relates to a kind of low profile circular polarization microstrip antenna in communication, measurement and control area, the utility model be comparatively applicable to being applied to require circular polarization radiation antenna communication, in TT&C system.
Background technology
The microstrip antenna that can form circular polarization at present in communication, TT&C system mainly contains following several version, though respectively have feature in performance, all there is certain deficiency.
1, corner cut circular polarization microstrip antenna: this form antenna structure is simple, and profile is low, but antenna axial ratio, standing wave bandwidth are less than 2%.
2, the circular polarization microstrip antenna form of circumscribed circle polarization electric bridge, microstrip antenna axial ratio, usual its of standing wave broader bandwidth of this form are less than 3dB axial ratio bandwidth and are greater than 15%, the standing wave band being less than 2 is wider than 20%, but circumscribed circle polarization electric bridge takes up room comparatively greatly, feeder line is tediously long, differential loss is comparatively large, is unfavorable for antenna, network integration design.
3, slot-coupled circular polarization microstrip antenna, the circular polarization microstrip antenna of this form compares with traditional circular polarization microstrip antenna, have the advantages that impedance, axial ratio bandwidth are wide, but due to the asymmetry of gap structure, often need to load isolation resistance and realize wider axial ratio bandwidth, which produces two problems: on the one hand, isolation resistance needs human weld, when array scale is larger, need huge workload, be difficult to again the consistency ensureing element solder; On the other hand, isolation resistance can produce certain differential loss, causes radiation gain decline in various degree.
Utility model content
The purpose of this utility model is avoid the weak point in above-mentioned background technology and provide a kind of low profile circular polarization microstrip antenna, and feature of the present utility model is, impedance, axial ratio bandwidth are wide, compact conformation, can realize the feature such as antenna, network integration design.
The utility model is achieved in that low profile circular polarization microstrip antenna, comprise and support fixing top dielectric plate 1 successively by dielectric posts 7 from top to bottom, interlayer plate 2, underlying dielectric plate 3 and reflection aluminium sheet 4, the lower surface of top dielectric plate 1 applies and is carved with foursquare upper strata paster 5, the lower surface of interlayer plate applies and is carved with foursquare intermediate layer of patches 6, the upper surface of underlying dielectric plate 3 is provided with metal ground, the lower surface of underlying dielectric plate 3 is provided with circular polarization feeding network 12, it is characterized in that: the upper surface of interlayer plate 2 is provided with two circular capacitor sheets 9, the center of circle 9 of two circular capacitor sheets is 90 ° with the geometric center angle of intermediate layer of patches 6, the center of circle projection of two circular capacitor sheets 9 is positioned at intermediate layer of patches 6 compositing area, and all depart from the geometric center of intermediate layer of patches 6, two circular capacitor sheets 9 are all connected with two output one_to_one corresponding of circular polarization feeding network 12 by metal probe 8.
Wherein, described circular polarization feeding network 12 comprises Wilkinson power divider structure 11 and 90 ° of jayrators 10, Wilkinson power divider structure 11 is made up of to the 3rd transformer section and the first output to the second output input, the first transformer section, first output is connected with the first metal probe by 90 ° of jayrators 10, and the second output is connected with the second metal probe.
The utility model compares with background technology and has the following advantages:
1, the utility model is provided with a kind of low profile circular polarization microstrip antenna unit 1 parts, this low profile circular polarization microstrip antenna is made up of top dielectric plate 1, interlayer plate 2, underlying dielectric plate 3, reflection aluminium sheet 4, dielectric posts 7, propose the feeding classification of top feedback coupling, high-quality circular polarization directional beam can be produced in broadband, it is less than 3dB axial ratio bandwidth and is greater than 15%, and the standing wave band being less than 2 is wider than 20%.
2, the whole antenna structure of the utility model is simple, compact, compare with other circular polarization microstrip antennas without the need to welding isolation resistance, and broadband circle polarized emission requirements can be met, the design achieves antenna and network integration designs simultaneously, can array antenna design be realized, be applicable to require in the communication system of circular polarized antenna.
Accompanying drawing explanation
Fig. 1 is the utility model three-dimensional structure schematic diagram;
Fig. 2 is the utility model intermediate layer feed structure schematic diagram;
Fig. 3 is the utility model bottom feeding network schematic diagram.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, the utility model is made up of top dielectric plate 1, interlayer plate 2, underlying dielectric plate 3, reflection aluminium sheet 4 and dielectric posts 7.Fig. 1 is the utility model three-dimensional structure schematic diagram, gives the relative position relation between each parts; Fig. 2 is the utility model intermediate layer feed structure schematic diagram; Fig. 3 is bottom feeding network schematic diagram.
The lower surface of top dielectric plate 1 applies and is carved with foursquare upper strata paster 5, its at the middle and upper levels paster 5 effect be radiation or receive circular polarization electromagnetic signal, complete electromagnetic signal conversion, embodiment adopts printed board to apply steel structure, the installation direction of this radiation patch is down, and this design considers that dielectric-slab can play a protective role to radiation patch;
Intermediate layer of patches 6 is positioned at the lower surface of interlayer plate 2, and its effect is the signal that coupling upper strata paster 5 receives;
Circular capacitor sheet 9 is positioned at the upper surface of interlayer plate 2, the center of circle 9 of two circular capacitor sheets is 90 ° with the geometric center angle of intermediate layer of patches 6, the center of circle projection of two circular capacitor sheets 9 is positioned at intermediate layer of patches 6 compositing area, and all departing from the geometric center of intermediate layer of patches 6, its effect is the impedance matching improving antenna;
Circular polarization feeding network 12 is positioned at the lower surface of underlying dielectric plate 3, comprise Wilkinson power divider structure 11 and 90 ° of jayrators 10, first output 13 of Wilkinson power divider structure 11 is connected with the first metal probe by 90 ° of jayrators 10, second output 15 is connected with the second metal probe, input 14 be coaxially connected.This feeding network not only achieves the excitation to intermediate layer of patches, and also achieve the function to the distribution of signal constant power and phase quadrature, this is the necessary condition realizing circular polarization, and wherein, 90 ° of jayrators 10 achieve two paths of signals phase quadrature;
Be positioned at the upper surface of underlying dielectric plate 3, its left and right is the radiation ensureing paster is normal direction radiation metal;
Metal probe 8 connects capacitance sheet and circular polarization feeding network branch terminal respectively, and effect realizes on paster that signal transmitted via circular polarization feeding network by metal probe 8, and then be radiated free space;
Reflection aluminium sheet 4 ensure that the directed radiation of signal, inhibits the parasitic radiation of circular polarization feeder network simultaneously, ensure that the electromagnetic compatibility of antenna;
Dielectric posts 7 serves supporting role between each layer, and comparing the lightweight of it simultaneously affects little with metallic screw on aerial radiation.
Utility model works principle is as follows: when transmitting a signal, transmitter transmits, circular polarization feeding network 11 is input to by coaxial cable, signal is divided into amplitude equal by circular polarization feeding network 11, differ the two paths of signals of 90 °, and by circular capacitor sheet 9 circular polarization electromagnetic wave intermediate layer of patches 6 exciter, this circularly polarised wave has encouraged electromagnetic wave by spatial coupling on upper strata paster 5, and is radiated free space by it.The reception of antenna and be emitted as reciprocity process, signal is received by radiation patch 5, and is coupled to intermediate layer of patches 6 by spatial coupling, and extracts composite signal by circular polarization feeding network 11, finally outputs to external receiver by coaxial cable.
Claims (2)
1. low profile circular polarization microstrip antenna, comprise and support fixing top dielectric plate (1) successively by dielectric posts (7) from top to bottom, interlayer plate (2), underlying dielectric plate (3) and reflection aluminium sheet (4), the lower surface of top dielectric plate (1) applies and is carved with foursquare upper strata paster (5), the lower surface of interlayer plate applies and is carved with foursquare intermediate layer of patches (6), the upper surface of underlying dielectric plate (3) is provided with metal ground, the lower surface of underlying dielectric plate (3) is provided with circular polarization feeding network (12), it is characterized in that: the upper surface of interlayer plate (2) is provided with two circular capacitor sheets (9), the center of circle (9) of two circular capacitor sheets and the geometric center angle of intermediate layer of patches (6) are 90 °, the center of circle projection of two circular capacitor sheets (9) is positioned at intermediate layer of patches (6) compositing area, and all depart from the geometric center of intermediate layer of patches (6), two circular capacitor sheets (9) are all connected with two output one_to_one corresponding of circular polarization feeding network (12) by metal probe (8).
2. low profile circular polarization microstrip antenna according to claim 1, it is characterized in that: described circular polarization feeding network (12) comprises Wilkinson power divider structure (11) and 90 ° of jayrators (10), Wilkinson power divider structure (11) is made up of to the 3rd transformer section and the first output to the second output input, the first transformer section, first output is connected with the first metal probe by 90 ° of jayrators (10), and the second output is connected with the second metal probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520761955.9U CN205029013U (en) | 2015-09-29 | 2015-09-29 | Low profile circular polarization microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520761955.9U CN205029013U (en) | 2015-09-29 | 2015-09-29 | Low profile circular polarization microstrip antenna |
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| Publication Number | Publication Date |
|---|---|
| CN205029013U true CN205029013U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520761955.9U Expired - Fee Related CN205029013U (en) | 2015-09-29 | 2015-09-29 | Low profile circular polarization microstrip antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329141A (en) * | 2016-10-17 | 2017-01-11 | 复旦大学 | P-band dual circularly polarized helical antenna |
| CN106848599A (en) * | 2016-12-27 | 2017-06-13 | 中国电子科技集团公司第五十四研究所 | A kind of broadband circular polarization microstrip antenna array row of C-band aperture-coupled |
| CN108598693A (en) * | 2018-04-09 | 2018-09-28 | 重庆邮电大学 | Impedance easily matched broadband circle polarized UHF RFID readers antenna |
-
2015
- 2015-09-29 CN CN201520761955.9U patent/CN205029013U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329141A (en) * | 2016-10-17 | 2017-01-11 | 复旦大学 | P-band dual circularly polarized helical antenna |
| CN106329141B (en) * | 2016-10-17 | 2019-08-09 | 昆山亿趣信息技术研究院有限公司 | Pattern-band double-circle polarization helical antenna |
| CN106848599A (en) * | 2016-12-27 | 2017-06-13 | 中国电子科技集团公司第五十四研究所 | A kind of broadband circular polarization microstrip antenna array row of C-band aperture-coupled |
| CN106848599B (en) * | 2016-12-27 | 2023-07-07 | 中国电子科技集团公司第五十四研究所 | Broadband circularly polarized microstrip antenna array with C-band slot coupling feed |
| CN108598693A (en) * | 2018-04-09 | 2018-09-28 | 重庆邮电大学 | Impedance easily matched broadband circle polarized UHF RFID readers antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 |