CN104300203A - Circularly polarized microstrip patch antenna with slot radiation fed by L-waveband microstrip - Google Patents
Circularly polarized microstrip patch antenna with slot radiation fed by L-waveband microstrip Download PDFInfo
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- CN104300203A CN104300203A CN201310299519.XA CN201310299519A CN104300203A CN 104300203 A CN104300203 A CN 104300203A CN 201310299519 A CN201310299519 A CN 201310299519A CN 104300203 A CN104300203 A CN 104300203A
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Abstract
The invention designs a circularly polarized microstrip patch antenna with slot radiation fed by L-waveband microstrip, and belongs to the field of antenna engineering. The antenna is characterized by comprising a metal reflector board (1), a microstrip wire (2) for feeding to a slot (3) on a grounded metal board, a parasitic patch (4), and dielectric boards (5) and (6). The circularly polarized microstrip patch antenna is realized by rotating patch angle and utilizing a slot coupling method. The antenna is novel and smart in design, light and small in overall size, convenient to move, high in gain, capable of communicating with a satellite after forming an array, compact in structure and easy to process, so that the antenna has high market potential.
Description
Technical field
The invention belongs to antenna works technical field, specifically a kind of satellite ground station antenna.
Background technology
The classification of earth station antenna is generally divided into two classes: one is omnidirectional antenna; Another kind is directional antenna, i.e. the main flow antenna of mobile satellite communication earth station antenna.
Following several form can be divided into: the first is microstrip antenna in communication ground station omnidirectional antenna.The Circular Microstrip Antennas that signal through all differing 90 ° on space and phase place encourages, can realize the circular polarization radiation directional diagram that rotational symmetry is good, the Two--Layer Microstrip Antenna formed by two circular patches realizes broadband and double frequency.The second is crossed slit antenna, and it can realize circular polarization wide beam directional diagram, and this antenna realizes radiation by the gap of cavity top cross.The third antenna form intersects sagging element antenna, and it is that the signal of 90 ° realizes circular polarization by encouraging constant amplitude, phase difference on mutually orthogonal symmetrical dipole, and this antenna can improve its wave beam and axial ratio by the shape changing oscillator arms.4th kind of antenna is the resonant quadrifilar helix antenna that radiation theory is similar to the third.This kind of antenna, by by its oscillator arms coiled equally, regulates its physical size to improve electric property.Because the working band of this antenna is narrow, and not easily broadening, afterwards by improving its structure and feeding classification, devise eight arm helical antennas.It not only has the advantage of four-arm spiral antenna but also can also realize broadband and dual frequency characteristics.
And for directional antenna, also four classes can be divided into: first kind mechanical scanning antennas, it is by the position at change antenna array, the main lobe wave beam of antenna is aimed at communication satellite, it by control step motor realize wave beam follow the tracks of, this kind of antenna structure is simple, cost is low, but its tracking velocity is slow, and reliability is low and antenna section is high.Afterwards in order to solve the slow problem of tracking velocity, there is Equations of The Second Kind directional antenna---the switched beam antenna replacing mechanical scanning with electric scanning.But this kind of antenna gain is on the low side, and there is wave cover blind area to a certain extent.3rd class is exactly software antenna, and this kind of antenna converts microwave signal to digital baseband signal by certain methods, then carries out process and forms required wave beam.But this kind of antenna design techniques is not mature enough, and equipment is complicated.4th class is exactly phased array antenna, and this kind of antenna is the earliest for military radar, and it has good electric property, tracking velocity is fast, reliability is high and be easy to the advantages such as the conformal installation of carrier.
Used in the present invention is slot-coupled microstrip antenna structure, and this structure have employed a kind of new feeding classification: couple feed.Its mechanism carries out feed by the electromagnetic coupled between microstrip line and metal ground plate are slotted.This antenna has two outstanding advantages, first, for traditional coaxial probe formula feed, necessarily weld between paster with feed line, slot-coupled mode then avoids the deterioration owing to welding the antenna performance caused, and is more favourable for this feed of large-scale microstrip antenna array form.The second, the microstrip structure of slot-coupled is avoided punching on substrate, is convenient to processing.
Summary of the invention
The present invention devises a kind of by rotating paster angle and utilizing the method for slot-coupled to realize the L-band micro-strip paster antenna of circular polarization.This Antenna Design novelty is ingenious, and overall dimensions is light, little, conveniently moving, communicates after the higher satisfied composition array of gain with satellite, and compact conformation, be easy to processing, make the present invention have very high market potential.
Accompanying drawing illustrates:
Fig. 1 is the forward sight graphics of the circularly-polarized patch antenna of the present invention-L-band aperture-coupled
Fig. 2 is the three-view diagram of the circularly-polarized patch antenna of the present invention-L-band aperture-coupled
Fig. 3 is the circularly-polarized patch antenna standing-wave ratio VSWR of the present invention-L-band aperture-coupled
Fig. 4 is the azimuth plane of circularly-polarized patch antenna under rectangular coordinate system (H face) and pitching face (E face) directional diagram of the present invention-L-band aperture-coupled
Fig. 5 is the axial ratio directional diagram of the circularly-polarized patch antenna of the present invention-L-band aperture-coupled
Fig. 6 is the front view of the antenna array of the circularly-polarized patch antenna composition of the present invention-L-band aperture-coupled
Fig. 7 is each port standing-wave ratio VSWR of the antenna array of the circularly-polarized patch antenna composition of the present invention-L-band aperture-coupled
Fig. 8 is the center frequency point pattern characteristics of the antenna array of the circularly-polarized patch antenna composition of the present invention-L-band aperture-coupled
Fig. 9 is the center frequency point axial ratio characteristic of the antenna array of the circularly-polarized patch antenna composition of the present invention-L-band aperture-coupled
Specific embodiments
Fig. 1 and 2 describes specific embodiment of the invention scheme.Shown in Fig. 1 and 2, the element antenna of this antenna array comprises metallic reflection plate (1), microstrip line (2) to gap (3) feed on grounding plate (7), parasitic patch (4), and dielectric-slab (5) and (6).
Two dielectric-slab substrates of micro-strip paster antenna are of a size of 120mm × 90mm × 1mm, and medium substrate dielectric constant is 2.55, and grounding plate and metallic reflection plate are of a size of 120mm × 90mm.Parasitic patch is of a size of 65.3mm × 47.4mm, it is 27 ° along horizontal rotated counterclockwise by angle, two layer medium distance between plates is from being 20mm, microstrip line for feed is of a size of 158.98mm × 4.1mm ground plate and cracks and be of a size of 52.8mm × 2.45mm, feeding microstrip line end-to-end distance slit centers 7.8mm.The present invention adopts the mode of feed microstrip line to micro-strip paster antenna feed, owing to being gap radiation, and require that antenna is one-way radiation, so add the metallic plate of a reflection after grounding plate, ensure the characteristic of antenna one-way radiation, in order to Bandwidth, we adopt the method for adding parasitic patch.
We have employed the HFSS 3 D electromagnetic simulation software of Ansoft company to invention has been emulation.
Fig. 3 is standing-wave ratio (VSWR) curve chart about this antenna.Can see by figure, in the frequency band range needed, antenna input port coupling is good, its input standing-wave ratio VSWR < 1.06.
Fig. 4 is azimuth plane (H face) and pitching face (E face) directional diagram of the antenna be drawn under rectangular coordinate system, and wherein face, pitching face is
azimuth plane face is
we have chosen this frequency of centre frequency and investigate.Can find that gain of the present invention reaches more than 9dB.
Fig. 5 is the axial ratio characteristic about this antenna, and from figure, two planes axial ratio characteristic within the scope of main lobe width is all less than 4dB, meets circular polarization characteristics.
Fig. 6 is the planar array of 7*16 unit of this antenna composition.
Fig. 7 is the standing-wave ratio curve of each port in array antenna, upper as can be seen from figure, is all less than 1.26 at the standing-wave ratio of the frequency band range internal antenna needed.
Fig. 8 Fig. 9 represents that the gain of center frequency point antenna is 28.42dB, and secondary lobe is-18.9dB, and it is 7.37 ° that azimuth plane main lobe width is about 6.12 ° with pitching face main lobe width, and its axial ratio characteristic is less than 2.65dB within the scope of main lobe width.
The array antenna of the present invention's composition, antenna indices is better, and compact conformation, is easy to processing and has height designability, therefore having very strong practicality and competitiveness.
Be more than the description to the present invention and embodiment thereof provided to the engineers and technicians being familiar with field of the present invention, these descriptions should be considered to be illustrative, but not determinate.Engineers and technicians the thought accordingly in invention claims can do concrete operation and implement, and naturally also can do a series of change according to the above to embodiment.And the present invention is not limited to L frequency range, structure of the present invention can be transplanted to the micro-strip paster antenna of other different frequency range naturally.Above-mentioned these all should be regarded as coverage of the present invention.
The content be not described in detail in specification of the present invention belongs to the known technology of professional and technical personnel in the field.
Claims (5)
1. the circularly polarization microstrip patch antenna of the microstrip-fed gap radiation of L-band, it is characterized in that: comprise metallic reflection plate (1), microstrip line (2) is to gap (3) feed on grounding plate (7), parasitic patch (4), and dielectric-slab (5) and (6), whole micro-strip paster antenna compact conformation is simple, is easy to processing.
2. the circularly polarization microstrip patch antenna of the microstrip-fed gap radiation of a kind of L-band according to claim 1, the effect of metallic reflection plate allows micro-strip paster antenna one-way radiation.
3. the circularly polarization microstrip patch antenna of the microstrip-fed gap radiation of a kind of L-band according to claim 1, the broadening of bandwidth can realize by adding parasitic patch (4), and parasitic patch (4) is positioned at gap (3) forward direction 20mm place.
4. the circularly polarization microstrip patch antenna of the microstrip-fed gap radiation of a kind of L-band according to claim 1, by regulating the size in gap (3) and the size of paster (4) and its relative position, good bandwidth of operation can be obtained.
5. the circularly polarization microstrip patch antenna of the microstrip-fed gap radiation of a kind of L-band according to claim 1, by microstrip line (2) to micro-strip paster antenna feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310299519.XA CN104300203A (en) | 2013-07-17 | 2013-07-17 | Circularly polarized microstrip patch antenna with slot radiation fed by L-waveband microstrip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310299519.XA CN104300203A (en) | 2013-07-17 | 2013-07-17 | Circularly polarized microstrip patch antenna with slot radiation fed by L-waveband microstrip |
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| CN104300203A true CN104300203A (en) | 2015-01-21 |
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| CN201310299519.XA Pending CN104300203A (en) | 2013-07-17 | 2013-07-17 | Circularly polarized microstrip patch antenna with slot radiation fed by L-waveband microstrip |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161847A (en) * | 2015-08-19 | 2015-12-16 | 桂林电子科技大学 | Broadband high-gain circularly polarized antenna |
| CN107978857A (en) * | 2017-11-16 | 2018-05-01 | 西安电子科技大学 | A kind of micro-strip paster antenna of high phase place central stabilizer degree aperture-coupled |
| CN107978865A (en) * | 2017-12-06 | 2018-05-01 | 北京华镁钛科技有限公司 | A kind of wide scan angle S-band double-circle polarization microstrip antenna and its array for phased array |
| CN109616764A (en) * | 2018-07-17 | 2019-04-12 | 云南大学 | Substrate integrates gap waveguide circular polarized antenna |
| CN109861008A (en) * | 2018-12-27 | 2019-06-07 | 中国电子科技集团公司第二十研究所 | A kind of high isolation dual polarized decoupling anti-interference antenna array |
| CN110380213A (en) * | 2019-08-06 | 2019-10-25 | 维沃移动通信有限公司 | A kind of aerial array and terminal |
| US11424540B2 (en) | 2019-10-24 | 2022-08-23 | PCI Private Limited | Antenna system |
| WO2023088026A1 (en) * | 2021-11-22 | 2023-05-25 | 江苏科技大学 | Multi-band slot-coupled antenna |
-
2013
- 2013-07-17 CN CN201310299519.XA patent/CN104300203A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161847A (en) * | 2015-08-19 | 2015-12-16 | 桂林电子科技大学 | Broadband high-gain circularly polarized antenna |
| CN105161847B (en) * | 2015-08-19 | 2018-08-10 | 桂林电子科技大学 | Wide band high-gain circular polarized antenna |
| CN107978857A (en) * | 2017-11-16 | 2018-05-01 | 西安电子科技大学 | A kind of micro-strip paster antenna of high phase place central stabilizer degree aperture-coupled |
| CN107978865A (en) * | 2017-12-06 | 2018-05-01 | 北京华镁钛科技有限公司 | A kind of wide scan angle S-band double-circle polarization microstrip antenna and its array for phased array |
| CN107978865B (en) * | 2017-12-06 | 2023-10-24 | 北京华镁钛科技有限公司 | Wide scanning angle S-band double circularly polarized microstrip antenna for phased array and array thereof |
| CN109616764A (en) * | 2018-07-17 | 2019-04-12 | 云南大学 | Substrate integrates gap waveguide circular polarized antenna |
| CN109616764B (en) * | 2018-07-17 | 2024-01-19 | 云南大学 | Substrate integrated gap waveguide circularly polarized antenna |
| CN109861008A (en) * | 2018-12-27 | 2019-06-07 | 中国电子科技集团公司第二十研究所 | A kind of high isolation dual polarized decoupling anti-interference antenna array |
| CN110380213A (en) * | 2019-08-06 | 2019-10-25 | 维沃移动通信有限公司 | A kind of aerial array and terminal |
| CN110380213B (en) * | 2019-08-06 | 2021-09-03 | 维沃移动通信有限公司 | Antenna array and terminal |
| US11424540B2 (en) | 2019-10-24 | 2022-08-23 | PCI Private Limited | Antenna system |
| WO2023088026A1 (en) * | 2021-11-22 | 2023-05-25 | 江苏科技大学 | Multi-band slot-coupled antenna |
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Application publication date: 20150121 |