CN204130690U - A kind of dual mode wideband circular polarization sipes antenna - Google Patents
A kind of dual mode wideband circular polarization sipes antenna Download PDFInfo
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- CN204130690U CN204130690U CN201420392992.2U CN201420392992U CN204130690U CN 204130690 U CN204130690 U CN 204130690U CN 201420392992 U CN201420392992 U CN 201420392992U CN 204130690 U CN204130690 U CN 204130690U
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Abstract
The utility model discloses a kind of dual mode wideband circular polarization sipes antenna, include the circular polarization sipes antenna element that two structures are the same, mutually opposing, and be located at the feeding network between these two circular polarization sipes antenna elements; Each circular polarization sipes antenna element is equipped with a sipes, it is the floor of circular polarization sipes antenna element around sipes, the outer rim on floor is introduced antenna feed end, antenna feed end is loaded with electric feed signal line, floor is loaded with grounded metal band and gap respectively, electric feed signal line and grounded metal band produce a circular polarization pattern jointly, and electric feed signal line and gap produce another circular polarization pattern jointly.The utility model is by introducing grounded metal band and load gap on floor, produce two circular polarization patterns, broadening axial ratio bandwidth, has structure simple significantly, axial ratio bandwidth and impedance bandwidth is wide, axial ratio performance is controlled in axial ratio bandwidth and band, the features such as broadband directional diagram is stable.
Description
Technical field
The utility model relates to the technical field of circular polarized antenna, refers in particular to a kind of dual mode wideband circular polarization sipes antenna.
Background technology
Global electrical circuiti (GNSS) is an engineering of rising research nearly decades, is mainly used in as user provides location, navigation and precision time service service.Relative to conventional wireless electricity location, its positioning precision is high, and there is the advantages such as fast response time, wide coverage and round-the-clock round-the-clock, therefore no matter in civilian or military domain, its using value is all very large, has been widely used in the aspects such as oceangoing voyage, forest fire protection and the mitigation disaster relief at present.There are four large Position Fixing Navigation Systems in the current whole world, i.e. Beidou satellite navigation system (the BeiDou Navigation Satellite System of the global positioning system (GPS) of the U.S., the Galileo (Galileo) of European Union, Muscovite GLONASS (GLONASS) and China, BDS), united state regards as four large core supplier of GPS (Global Position System), the Beidou II of current China is in the quickly networking stage, it is reported and estimates to realize Global coverage completely at the year two thousand twenty.
Circular polarized antenna is the antenna that dipper system extensively adopts, and its performance drastically influence the work quality of system.Beidou II system frequency range is B1:1561.098 ± 2.046MHz, B2:1207.14 ± 10.23MHz and B3:1268.52 ± 10.23MHz, be right-handed circular polarization, and the working frequency range of different navigation system is also different, three system frequency ranges of such as GPS are respectively L1:1575.42MHz ± 2.046MHz, L2:1227.60 ± 2.046MHz and L5:1176.45 ± 12MHz.For a high-quality system terminal, necessary energy compatible different Position Fixing Navigation System simultaneously, can get the chief of each system and have complementary advantages like this, utilize as best one can signal improve the quality of location navigation, therefore require that antenna has broadband circle polarized performance.Current Broadband circularly polarized antenna has become the popular direction of research.The difficult point realizing Broadband circularly polarized antenna is to ensure that, directional diagram good at broadband internal antenna impedance matching performance is stablized, and also will ensure that in working frequency range, axial ratio meets the requirement of circular polarization.Realize broadband circle polarized method at present and mainly can be divided into three kinds: adopt the antenna structures such as spiral traveling-wave antenna, sipes antenna, increase parasitic element and introduce multiple circular polarization pattern, improve the feeding network of antenna.First realizes circular polarization broadband with the third Measures compare difficulty and is with the controlled of interior axial ratio performance, and the third method needs to design broadband feeding network, adds complexity and in turn introduces loss.Second method can realize the controllability of axial ratio performance in circular polarization bandwidth sum band, but at present bandwidth can the broad-band antenna of all frequency ranges of compatible Beidou II less.
Traditional microstrip antenna has the advantage of low section, but its bandwidth of operation is very narrow, generally only has about 3%.The four-arm spiral antenna of many feedbacks structure has good broadband circle polarized performance, but must design feeding network, and the section of antenna is relatively high.Sipes antenna can realize wideband impedance match relatively easily, is therefore often used to design broad-band antenna.And the feed structure of co-planar waveguide makes the metal level of antenna all in one plane, convenient processing and integrated.Current most coplanar wave guide feedback sipes antenna all adopts to be introduced orthogonal two metal tapes or introduces perturbation to produce circular polarization radiation, antenna can be made to have wider axial ratio bandwidth, but major part is all single mode operation at present, and axial ratio bandwidth is limited.
The people such as Y.B.Chen in 2006 have delivered the article being entitled as " CPW-fed broadband circularly polarised square slot antenna " on Electronics Letters, propose the another kind of square groove circular polarized antenna utilizing coplanar wave guide feedback.Introduce L shape minor matters along the diagonal of square groove from feeder line, utilize the horizontal and vertical part of minor matters to produce two current components needed for circularly polarised wave respectively, the axial ratio bandwidth of 17% can be obtained, all frequency ranges of Beidou II cannot be covered.
The people such as Jia-Yi Sze in 2008 have delivered the article being entitled as " Circularly polarized square slot antenna with a pair of inverted-L grounded strips " on IEEE Antennas and Wireless Propagation Letters, add the grounded metal band of two L shapes at two diagonal positions of square groove, make the magnetic field in groove produce disturbance thus form circularly polarised wave.This structure is single mode circular polarization, data display axial ratio bandwidth 25% in document.
The people such as Jeen-Sheen Row in 2008 have delivered the article being entitled as " Circularly-polarized wide slot antenna loaded with a parasitic patch " on IEEE Transactions on Antennas and Propagation, main radiating antenna is a microstrip-fed circular recess antenna, directly over it, load a circular parasitic patch.Made the broadened bandwidth of antenna by the acting in conjunction of main radiating antenna and passive antenna, and increase along with the height distance between main radiating antenna and parasitic patch, coupling between the two can change, and bandwidth can increase gradually.This structure obtains the axial ratio bandwidth of 21%.Parasitic element structure adds the section height of antenna.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of dual mode wideband circular polarization sipes antenna, has simply rational in infrastructure, axial ratio bandwidth and impedance bandwidth is wide, axial ratio performance is controlled in axial ratio bandwidth and band, the features such as broadband directional diagram is stable.
For achieving the above object, technical scheme provided by the utility model is: a kind of dual mode wideband circular polarization sipes antenna, include the circular polarization sipes antenna element that two structures are the same, mutually opposing, and the feeding network be located between these two circular polarization sipes antenna elements, described feeding network exports two amplitude signals that are equal, phase 180 ° and carries out feed to two circular polarization sipes antenna elements; Wherein, each circular polarization sipes antenna element is equipped with a sipes, the surrounding of described sipes is the floor of circular polarization sipes antenna element, the outer rim on described floor is introduced antenna feed end, described antenna feed end is loaded with the electric feed signal line extended in sipes, described floor is loaded with respectively the grounded metal band extended in sipes and the gap being communicated with sipes, described electric feed signal line and grounded metal band produce a circular polarization pattern jointly, and described electric feed signal line and gap produce another circular polarization pattern jointly.
Impedance matching network is introduced between described electric feed signal line and floor.
Described electric feed signal line is loaded with one section of impedance matching metal tape, between described impedance matching metal tape and floor, there is gap.
Described antenna feed end uses micro-band, co-planar waveguide or coaxial line to carry out feed.
Described feeding network is that anti-phase merit divides microstrip feed network.
Compared with prior art, tool has the following advantages and beneficial effect the utility model:
1, existing sipes circular polarized antenna is generally the working method of single mode, axial ratio bandwidth is wide not, and axial ratio broadband is uncontrollable, and dual mode wideband circular polarization sipes antenna of the present utility model is by introducing grounded metal band and load gap on floor, produce two circular polarization patterns, broadening axial ratio bandwidth significantly, and can by the axial ratio bandwidth of the size that changes grounded metal band and gap control antenna easily, it is made to cover all frequency ranges of second generation Beidou satellite navigation system, and the working frequency range of compatible with GPS;
2, compared with existing sipes circular polarized antenna, dual mode wideband circular polarization sipes antenna of the present utility model has the advantage that in broadband, directional diagram is symmetrical stable.
Accompanying drawing explanation
Fig. 1 is the structural representation of dual mode wideband circular polarization sipes antenna described in the utility model.
Fig. 2 is the structural representation of circular polarization sipes antenna element described in the utility model.
Fig. 3 is the structural representation behind circular polarization sipes antenna element described in the utility model removing gap.
Fig. 4 is the structural representation after circular polarization sipes antenna element described in the utility model removing grounded metal band.
The axial ratio Electromagnetic Simulation curve comparison figure that Fig. 5 is antenna element shown in Fig. 2, Fig. 3 and Fig. 4.
Fig. 6 is the structural representation after circular polarization sipes antenna element described in the utility model removing impedance matching metal tape.
The S11 Electromagnetic Simulation curve chart that Fig. 7 is antenna element shown in Fig. 2 and Fig. 6.
Fig. 8 is the axial ratio Electromagnetic Simulation curve chart of dual mode wideband circular polarization sipes antenna described in the utility model.
Fig. 9 a is the Electromagnetic Simulation directional diagram of dual mode wideband circular polarization sipes antenna described in the utility model in 1.25GHz, phi=0 plane.
Fig. 9 b is the Electromagnetic Simulation directional diagram of dual mode wideband circular polarization sipes antenna described in the utility model on 1.25GHz, phi=90 ° of plane.
Fig. 9 c is the Electromagnetic Simulation directional diagram of dual mode wideband circular polarization sipes antenna described in the utility model in 1.5GHz, phi=0 plane.
Fig. 9 d is the Electromagnetic Simulation directional diagram of dual mode wideband circular polarization sipes antenna described in the utility model on 1.5GHz, phi=90 ° of plane.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.
Dual mode wideband circular polarization sipes antenna described in the present embodiment, is one and can covers China's Beidou II satellite navigation system and the circular polarized antenna of all frequency ranges of compatible with GPS system, can meet the requirement of many constellations compatibility.As shown in Figure 1, it is the same that it includes two structures, mutually opposing circular polarization sipes antenna element 1, 2, and be located at this two circular polarization sipes antenna elements 1, feeding network 3 between 2, described feeding network 3 divides microstrip feed network for anti-phase merit, two amplitudes can be exported equal, the signal that phase is 180 ° is to two circular polarization sipes antenna elements 1, 2 carry out feed, such directional diagram that whole dual mode wideband circular polarization sipes antenna can be made in broadband to keep stable symmetry, namely all more symmetrical at the antenna pattern of axial ratio bandwidth internal antenna, there is the advantage that broadband directional diagram is stable, its effect is as shown in Fig. 9 a to Fig. 9 d.
As shown in Figure 2, each circular polarization sipes antenna element is equipped with a sipes 4, and described sipes 4 can be square, circular, triangle or other shape, and is specially square in the present embodiment.The surrounding of described sipes 4 is floors 5 of circular polarization sipes antenna element, and the outer rim on described floor 5 is introduced antenna feed end 6.Described antenna feed end 6 can use micro-band, co-planar waveguide or coaxial line etc. to carry out feed, it is loaded with the electric feed signal line 8 extended in sipes 4.Described floor 5 is loaded with respectively the grounded metal band 9 extended in sipes 4 and the gap 10 being communicated with sipes 4, described grounded metal band 9 can be linear, T-shaped or other shape, and be specially T-shaped in the present embodiment, and perpendicular to electric feed signal line 8, described gap 10 can be L shape or other shape, and is specially L shape in the present embodiment.Described electric feed signal line 8 produces a circular polarization pattern jointly with grounded metal band 9, can be changed the frequency of this circular polarization pattern by the length of regulated ground metal tape 9; Described electric feed signal line 8 produces another circular polarization pattern jointly with gap 10, by the frequency regulating the size in gap 10 can change this circular polarization pattern.
As shown in Figure 3, show the structure behind circular polarization sipes antenna element described in the utility model removing gap, as shown in Figure 4, show the structure after circular polarization sipes antenna element described in the utility model removing grounded metal band, when the gap 10 on grounded metal band 9 with floor 5 exists simultaneously, owing to creating two circular polarization patterns, therefore axial ratio bandwidth is significantly improved, as shown in Figure 5.In addition, the length changing grounded metal band 9 and gap 10 can the axial ratio bandwidth of control antenna and the axial ratio performance in being with easily.
In addition, in order to improve the impedance matching performance of antenna, impedance matching network is introduced between electric feed signal line 8 and floor 5 described in the present embodiment, described electric feed signal line 8 is loaded with one section of impedance matching metal tape 11, this impedance matching metal tape 11 can produce inductive effect, simultaneously, gap 7 is there is between described impedance matching metal tape 11 and floor 5, can capacity effect be produced between this impedance matching metal tape 11 and gap 7, be equivalent to the present embodiment LC series circuit in parallel between electric feed signal line 8 with floor 5 like this.
As shown in Figure 6, show the structure after circular polarization sipes antenna element described in the utility model removing impedance matching metal tape, compared with structure shown in this structure with Fig. 2, their S11 Electromagnetic Simulation curve as shown in Figure 7, as can be known from Fig. 7, by the length of change impedance matching metal tape 11 and the width in gap 7, the impedance matching performance of antenna can be changed.In addition, make the width of electric feed signal line 8 different, also can change the input impedance of antenna, thus improve the impedance matching performance of antenna.
As shown in Figure 8, the axial ratio bandwidth of dual mode wideband circular polarization sipes antenna described in the utility model can reach more than 60%.
The examples of implementation of the above are only the preferred embodiment of the utility model, not limit practical range of the present utility model with this, therefore the change that all shapes according to the utility model, principle are done, all should be encompassed in protection range of the present utility model.
Claims (5)
1. a dual mode wideband circular polarization sipes antenna, it is characterized in that: include the circular polarization sipes antenna element (1,2) that two structures are the same, mutually opposing, and the feeding network (3) be located between these two circular polarization sipes antenna elements (1,2), described feeding network (3) exports two amplitude signals that are equal, phase 180 ° and carries out feed to two circular polarization sipes antenna elements (1,2), wherein, each circular polarization sipes antenna element is equipped with a sipes (4), the surrounding of described sipes (4) is the floor (5) of circular polarization sipes antenna element, the outer rim on described floor (5) is introduced antenna feed end (6), described antenna feed end (6) is loaded with the electric feed signal line (8) extended in sipes (4), described floor (5) is loaded with respectively the grounded metal band (9) extended in sipes (4) and the gap (10) being communicated with sipes (4), described electric feed signal line (8) and grounded metal band (9) produce a circular polarization pattern jointly, described electric feed signal line (8) and gap (10) produce another circular polarization pattern jointly.
2. a kind of dual mode wideband circular polarization sipes antenna according to claim 1, is characterized in that: introduce impedance matching network between described electric feed signal line (8) and floor (5).
3. a kind of dual mode wideband circular polarization sipes antenna according to claim 2, it is characterized in that: described electric feed signal line (8) is loaded with one section of impedance matching metal tape (11), between described impedance matching metal tape (11) and floor (5), there is gap (7).
4. a kind of dual mode wideband circular polarization sipes antenna according to claim 1, is characterized in that: described antenna feed end (6) uses micro-band, co-planar waveguide or coaxial line to carry out feed.
5. a kind of dual mode wideband circular polarization sipes antenna according to claim 1, is characterized in that: described feeding network (3) divides microstrip feed network for anti-phase merit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420392992.2U CN204130690U (en) | 2014-07-16 | 2014-07-16 | A kind of dual mode wideband circular polarization sipes antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420392992.2U CN204130690U (en) | 2014-07-16 | 2014-07-16 | A kind of dual mode wideband circular polarization sipes antenna |
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| CN204130690U true CN204130690U (en) | 2015-01-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241819A (en) * | 2014-07-16 | 2014-12-24 | 华南理工大学 | Dual-module broadband circular polarization wide slot antenna |
| CN107658552A (en) * | 2017-11-08 | 2018-02-02 | 福州大学 | A kind of Small-sized C PW feeds wide axial ratio bandwidth circular polarized antenna |
| CN113937502A (en) * | 2021-09-11 | 2022-01-14 | 中国人民武装警察部队工程大学 | Stable-gain broadband slot circularly polarized antenna and wireless communication system |
-
2014
- 2014-07-16 CN CN201420392992.2U patent/CN204130690U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241819A (en) * | 2014-07-16 | 2014-12-24 | 华南理工大学 | Dual-module broadband circular polarization wide slot antenna |
| CN107658552A (en) * | 2017-11-08 | 2018-02-02 | 福州大学 | A kind of Small-sized C PW feeds wide axial ratio bandwidth circular polarized antenna |
| CN113937502A (en) * | 2021-09-11 | 2022-01-14 | 中国人民武装警察部队工程大学 | Stable-gain broadband slot circularly polarized antenna and wireless communication system |
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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: 20150128 Termination date: 20170716 |