CN202585722U - Double-band circular polarized antenna - Google Patents
Double-band circular polarized antenna Download PDFInfo
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- CN202585722U CN202585722U CN 201220072766 CN201220072766U CN202585722U CN 202585722 U CN202585722 U CN 202585722U CN 201220072766 CN201220072766 CN 201220072766 CN 201220072766 U CN201220072766 U CN 201220072766U CN 202585722 U CN202585722 U CN 202585722U
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- radiation paster
- biobelt
- double
- circular polarized
- polarized antenna
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Abstract
The utility model discloses a double-band circular polarized antenna. The antenna comprises a metal ground plate (1), a double-layer dielectric plate (2), radiation patches (3), a coaxial feed unit (4), and metal supports (5). The radiation patches (3) comprise a coupling radiation patch (3a) and a main radiation patch (3b), wherein a triangular corner is cut from the coupling radiation patch (3a), complementary split ring resonators (6) are etched on the main radiation patches (3b), the ring resonators are nested to each other, and the central points of the ring resonators are superposed while the openings of the ring resonators are inverse; the main radiation patch (3b) is printed on the upper surface of the double-layer dielectric plate (2), and the coupling radiation patch (3a) is printed on a middle plane of the double-layer dielectric plate (2); the coaxial feed unit (4) is biased in the double-layer dielectric plate; and the metal supports (5) are symmetrically arranged in four corners of the double-layer dielectric plate (2). The antenna can realize double-frequency circular polarization with wide wave beams, high gain and low coupling, which can be applied to satellite communication.
Description
Technical field
The utility model belongs to antenna technical field, specifically is operated in a kind of biobelt circular polarized antenna of superfrequency S radar and superfrequency C radar.
Background technology
In recent years, along with the development of radar detection field, global positioning system, REID, personal mobile communication, the biobelt dual polarized antenna extensively receives publicity.The quality of a common wireless communication system depends on aspects such as antenna, transmitter power and frequency spectrum, receiver sensitivity, signal processing, and antenna then plays critical effect.According to the needs of modern communications, an important directions of antenna development is multi-functional, like multiband, multipolarization and multipurpose etc.The preliminary target of dual-band antenna is ground communication simulation net and the compatible antenna for mobile phone of digital network, and the mobile portable antennas that satellite communication is up, band downlink is shared.The realization of biobelt dual polarized antenna makes antenna can be operated in two different frequency ranges; In the double frequency passband, launch or receive the electromagnetic wave of two orthogonal polarizations; For system provides two communication channels; Realize frequency and polarization multiplexing, satisfy the demand of the integrated and expanding communication capacity of antenna receiving-sending, and simplified system configuration.Compare with single system communication standard in the past, present marketer hopes that more the different techniques standard can merge on the same antenna, and this antenna is supported the work of multifrequency multipolarization, to the different communication code mode of diverse network using.The biobelt dual polarized antenna has plurality of applications in reality, like polarization diversity, frequency agility, the anti-multipath decline of ground communication; The transmit-receive sharing of mobile station, satellite communication, polarization isolation; The dual-mode of operation of ground, satellite communication, the frequency sharing of satellite communication and global positioning system etc.It can receive and launch the electromagnetic wave on the arbitrary polarisation direction, and very strong antijamming capability is arranged, and helps the small integrated design of system, can increase message capacity, reduce production cost, realizes the complete polarization and the intellectuality of antenna more easily.
Microstrip antenna can be divided into three types of micro-strip paster antenna, microband travelling wave antenna and microstrip slot antennas basically; Micro-strip paster antenna can be divided into rectangular microstrip antenna, Circular Microstrip Antennas, triangle, pentagon, ellipse and other possible geometric figure microstrip antennas by the difformity of paster; Be broadly divided into two types by implementation method, i.e. the microstrip antenna that the microstrip antenna of single layer structure realization and stepped construction realize; Microstrip antenna feed mode also has multiple, and what application was maximum in the reality is coaxial feeding, feed microstrip line, three kinds of modes of slit coupling feed.
At present, having carried out relevant antenna both at home and abroad realizes a series of researchs of biobelt circular polarization characteristics and has obtained some achievements.Adopt the methods in etchings aperture in the research more, realize the double frequency-band and the circular polarization characteristics of antenna, though this antenna is simple in structure, be prone to realization; But general gain is lower; Polarization wave beam relative narrower, defect ground structure also causes backward radiation easily, causes the decline of antenna radiation efficiency.What some researcher adopted is short-circuit method; Its purpose is to change the resonance frequency of basic mode or higher mode, thereby realizes the dual-band characteristic by designing requirement, and its a kind of canonical form is planar inverted-F antenna; Be widely used in mobile phone terminal, its shortcoming is the difficult realization of circular polarization characteristics.Also have some researchs to introduce double-deck radiation patch structure; This structure generally through two port feeds, realizes the dual polarization characteristic, and this method can be improved the radiation characteristic of antenna effectively; And approach is provided for the miniaturization of antenna; But the dual-port feed can increase the complexity of antenna itself, and the very difficult removal of the coupling between the port, has increased the cost of antenna and the difficulty of debugging to a certain extent.Top the whole bag of tricks is because the deficiency that itself exists has limited its application in satellite communication field.
The utility model content
The utility model provides a kind of and can realize high-gain, low biobelt circular polarized antenna of isolating, to satisfy the demand of satellite communication field to above problem.
For realizing above-mentioned purpose, the utility model comprises: metal floor, and the two-layered medium plate, radiation patch, coaxial feed unit and metallic support is characterized in that:
Said radiation patch comprises the coupled radiation paster and the primary radiation paster that cut the triangle angle, is etched with the complementary type split ring resonator on the primary radiation paster; The primary radiation paster is printed on the upper surface of two-layered medium plate, and the coupled radiation paster is printed on the mid-plane of two-layered medium plate; Two loop configuration openings of complementary type split ring resonator are reverse, and two rings are mutually nested, and central point overlaps.
Said metal floor is operated in the low frequency place of dual-band antenna, and as the reflection accessory plate of coupled radiation unit, the length of side value of this metal floor is 0.6 λ-0.8 λ.
Said coupled radiation paster is operated in the low frequency place of dual-band antenna, and the length of side value of this coupled radiation paster is 0.4 λ-0.5 λ.
Said primary radiation paster is operated in the high frequency points place of dual-band antenna, and the length of side value of this primary radiation paster is 0.4 λ-0.5 λ.
Said complementary type split ring resonator is operated in the high frequency points place of dual-band antenna, and the length of side value of this complementary type split ring resonator is 0.1 λ-0.2 λ.
The adjustable positions of said complementary type split ring resonator, the centre distance of the center of this complementary type split ring resonator and primary radiation paster value in the 1.9mm-2.2mm scope.
The dielectric constant of said medium substrate is between 1-10.
Compared with prior art, the utlity model has following advantage:
1. the utility model is owing to the complementary type split ring resonator of etching on the primary radiation unit, and two ring openings are reverse, mutually nested, and central point overlaps, and has reduced the area of the required primary radiation paster of antenna.
2. the utility model has changed the path of flowing through of radiating surface electric current owing on coupled radiation unit, adopt the triangle corner cut, has increased the electrical length of radiating element, thereby has reduced the area of the required coupled radiation paster of antenna.
3. the utility model is owing to adopt the two-layered medium plate structure, and compact conformation is easy to process, is convenient to the microwave circuit of radio-frequency front-end integratedly, reduced design cost and system complexity.
4. the utility model is owing to adopt coaxial feed, on the coupled radiation paster etching a circular slotted eye, reduced the coupling between the different operating frequency range.
5. the utility model has been realized wide polarization wave beam and high gain characteristics owing to through etching complementary openings resonant ring and corner cut structure on radiating element, formed the circular polarization of two frequency ranges.
6. the utility model can improve according to the actual requirements voluntarily; Through changing the size and the position of metal floor, radiating element, complementary type split ring resonator; Regulate radiation working point, impedance bandwidth and polarization bandwidth, satisfy different application requirements, simplicity of design is flexible.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is the return loss emulation and the measured curve figure of the utility model;
Fig. 4 is the axial ratio figure of the utility model in low-frequency range;
Fig. 5 is the axial ratio figure of the utility model at high band;
Fig. 6 is the axial ratio figure of the utility model at the 3.025GHz place;
Fig. 7 is the axial ratio figure of the utility model at the 4.297GHz place;
Fig. 8 be the utility model in the left and right sides at 3.025GHz place rounding polarised direction figure;
Fig. 9 be the utility model in the left and right sides at 4.297GHz place rounding polarised direction figure;
Figure 10 is the peak gain curve chart of the utility model on principal direction.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model done further describing:
Referring to Fig. 1 and Fig. 2, a kind of biobelt circular polarized antenna of the utility model comprises: metal floor 1; 2, two radiation patch 3 of two-layered medium plate, coaxial feed unit 4; Metallic support 5; This radiation patch 3 comprises the coupled radiation paster 3a and the primary radiation paster 3b that cut the triangle angle, and coupled radiation paster 3a symmetry is printed on the mid-plane of two-layered medium plate 2, the i.e. upper surface of the lower surface of top dielectric plate or layer dielectric plate; Primary radiation paster 3b is printed on the upper surface of two-layered medium plate 2.Be etched with complementary type split ring resonator 6 on the primary radiation paster 3b, two loop configuration openings of this complementary type split ring resonator 6 are reverse, and two rings are mutually nested, and central point overlaps.Coaxial feed unit 4 is biased in two-layered medium plate 2 inside, and metallic support 5 symmetries are placed on four jiaos of two-layered medium plate 2, plays fixation.
Said complementary type split ring resonator 6 is operated in the high frequency points place of dual-band antenna, and value of the ring and the outer shroud length of side is 0.1 λ-0.2 λ in it, wherein
λ is the antenna resonance wavelength, and c is the light velocity, and f is the resonance centre frequency, ε
rBe dielectric constant.According to above-mentioned formula, the ring that can calculate complementary type split ring resonator 6 is long.Because ring width, aperture pitch and the inner and outer ring slit of complementary type split ring resonator 6 are very little to the influence of antenna polarization characteristics, so can between 0.1mm-1mm, set arbitrarily.In this instance, the length of side of complementary type split ring resonator 6 is made as 5.8mm, and ring width is 0.3mm, and aperture pitch is 0.3mm, and the inner and outer ring slit is 0.3mm, has realized the circular polarization of 4.285GHz-4.309GHz frequency range.The central point distance of the central point of complementary type split ring resonator 6 and primary radiation paster 3b is made as d, and d is value in the 1.9mm-2.2mm scope, through changing the size of d, can regulate the polarization bandwidth.When for example d was 1.9mm, the relative bandwidth of high band circular polarization was 0.5%; When d was 2.2mm, the relative bandwidth of high band circular polarization was 0.475%.In this instance, the d value is 1.9mm.
Cut a triangle angle on the said coupled radiation paster 3a, the length of side of corner cut is 3.5mm in this instance, has realized the circular polarization of 3.015GHz-3.035GHz frequency range.
The length of side of said metal floor 1 is value in 0.6 λ-0.8 λ scope, can obtain concrete size through emulation, and the length of side of metal floor 1 is 44mm in this instance, as the reflection accessory plate of 3.025GHz; The length of side of said coupled radiation paster 3a is value in 0.4 λ-0.5 λ scope, and the length of side of coupled radiation paster 3a is 30mm in this instance, is operated in 3.025GHz; The length of side of said primary radiation paster 3b is value in 0.4 λ-0.5 λ scope, and the length of side of primary radiation paster 3b is 20mm in this instance, is operated in 4.297GHz, and the distance at its center and two-layered medium plate 2 centers is made as 4mm.
The dielectric constant of said two-layered medium substrate 2 is 2.65, and the length of side is 44mm, and thickness is 1mm; The height of said coaxial feed unit 4 is 2mm, and radius is 0.7mm, and the coupling aperture radius is 1mm, and the distance of these feed element 4 central points and primary radiation paster 3b central point is made as 2mm; The height of said metallic support 5 is 2mm, and diameter is 2mm.
Said primary radiation unit 3b goes up the complementary type split ring resonator 6 of etching, is not limited to square structure, also can adopt circle, ellipse or other curve shapes of opening.
An instantiation that more than is the utility model does not constitute any restriction to the utility model.
The case effect of the utility model can further specify through following figure as a result:
Return loss to the utility model is carried out emulation and measurement; Its result is as shown in Figure 3, and visible with the measurement curve chart by the emulation of Fig. 3 return loss, the utility model is worked in two frequency ranges; Impedance bandwidth at the 3.025GHz place is 54.2MHz; Impedance bandwidth is 1.82% relatively, and the impedance bandwidth at the 4.297GHz place is 125.5MHz, and impedance bandwidth is 2.95% relatively.
The utility model is carried out emulation in the axial ratio at low band and high band place, its result such as Fig. 4, shown in Figure 5, visible by the axial ratio figure of Fig. 4, Fig. 5, the utility model is respectively 0.54%, 0.5% in the circular polarization relative bandwidth of low band and high band.
The utility model is carried out emulation in the axial ratio at 3.025GHz and 4.297GHz place, its result such as Fig. 6, shown in Figure 7, visible by Fig. 6; The utility model is respectively-100 °-115 ° in the E at 3.025GHz place face, H face circular polarization wave beam scope;-71 °-66 °, visible by Fig. 7, the utility model is respectively-106 °-34 ° in the E at 4.297GHz place face, H face circular polarization wave beam scope;-65 °-80 °, realized the broad beam characteristic of antenna.
Rounding polarised direction figure carries out emulation in the left and right sides at 3.025GHz and 4.297GHz place to the utility model; Its result such as Fig. 8, shown in Figure 9; Visible by Fig. 8,9 directional diagram, the utility model is realized right-handed circular polarization and left-hand circular polarization characteristic respectively at 3.025GHz and 4.297GHz place.
Peak gain to the utility model carries out emulation, and its result is shown in figure 10, and visible by the gain curve figure of Figure 10, the gain of the utility model all greater than 7dB, has realized high-gain in working frequency range.
Claims (7)
1. biobelt circular polarized antenna; Comprise metal floor (1); Two-layered medium plate (2), radiation patch (3), coaxial feed unit (4) and metallic support (5); It is characterized in that radiation patch (3) comprises a coupled radiation paster (3a) and a primary radiation paster (3b) that cuts the triangle angle, is etched with complementary type split ring resonator (6) on the primary radiation paster (3b); Primary radiation paster (3b) is printed on the upper surface of two-layered medium plate (2), and coupled radiation paster (3a) is printed on the mid-plane of two-layered medium plate; Two loop configuration openings of complementary type split ring resonator (6) are reverse, and two rings are mutually nested, and central point overlaps.
2. a kind of biobelt circular polarized antenna according to claim 1; It is characterized in that metal floor (1) is operated in the low frequency place of dual-band antenna; As the reflection accessory plate of coupled radiation unit (3a), the length of side value of this metal floor (1) is 0.6 λ-0.8 λ.
3. a kind of biobelt circular polarized antenna according to claim 1 is characterized in that coupled radiation paster (3a) is operated in the low frequency place of dual-band antenna, and the length of side value of this coupled radiation paster (3a) is 0.4 λ-0.5 λ.
4. a kind of biobelt circular polarized antenna according to claim 1 is characterized in that primary radiation paster (3b) is operated in the high frequency points place of dual-band antenna, and the length of side value of this primary radiation paster (3b) is 0.4 λ-0.5 λ.
5. a kind of biobelt circular polarized antenna according to claim 1 is characterized in that complementary type split ring resonator (6) is operated in the high frequency points place of dual-band antenna, and the length of side value of this complementary type split ring resonator (6) is 0.1 λ-0.2 λ.
6. a kind of biobelt circular polarized antenna according to claim 1; The adjustable positions that it is characterized in that complementary type split ring resonator (6), centre distance value in the 1.9mm-2.2mm scope of the center of this complementary type split ring resonator (6) and primary radiation paster (3b).
7. a kind of biobelt circular polarized antenna according to claim 1, the dielectric constant that it is characterized in that two-layered medium plate (2) is between 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220072766 CN202585722U (en) | 2012-03-01 | 2012-03-01 | Double-band circular polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220072766 CN202585722U (en) | 2012-03-01 | 2012-03-01 | Double-band circular polarized antenna |
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| CN202585722U true CN202585722U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220072766 Expired - Fee Related CN202585722U (en) | 2012-03-01 | 2012-03-01 | Double-band circular polarized antenna |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610909A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Single-fed dual-bandwidth wave beam circular polarization antenna |
| CN103247845A (en) * | 2013-04-08 | 2013-08-14 | 中国电子科技集团公司第十研究所 | Phased-array antenna subarray for circularly polarized wide-angle scanning |
| CN103427160A (en) * | 2013-08-23 | 2013-12-04 | 厦门大学 | Double-frequency microstrip antenna of lug tuning ring lamination coupling BeiDou |
| CN105470635A (en) * | 2015-12-11 | 2016-04-06 | 北京伯临通信科技有限公司 | Low-profile dual-frequency and high-precision multi-mode navigation antenna |
| CN107121718A (en) * | 2017-05-22 | 2017-09-01 | 中国科学院物理研究所 | Circuit polarizer and its manufacture method based on three dimensional fold Meta Materials |
| CN110718750A (en) * | 2019-11-13 | 2020-01-21 | 朴海燕 | Miniaturized and circularly polarized patch antenna |
| CN111916886A (en) * | 2020-07-03 | 2020-11-10 | 华南理工大学 | Enhanced spread spectrum broadband base station antenna and wireless communication equipment |
| CN112003022A (en) * | 2020-09-27 | 2020-11-27 | 南京信息工程大学 | Double-frequency circularly polarized microstrip antenna meeting Beidou satellite navigation |
| CN112886272A (en) * | 2021-01-14 | 2021-06-01 | 西安电子科技大学 | Dual-frequency dual-polarization Fabry-Perot resonant cavity antenna |
| CN113363719A (en) * | 2021-06-24 | 2021-09-07 | 中国农业银行股份有限公司 | Microstrip antenna and electronic equipment based on beidou system |
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2012
- 2012-03-01 CN CN 201220072766 patent/CN202585722U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610909A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Single-fed dual-bandwidth wave beam circular polarization antenna |
| CN103247845A (en) * | 2013-04-08 | 2013-08-14 | 中国电子科技集团公司第十研究所 | Phased-array antenna subarray for circularly polarized wide-angle scanning |
| CN103427160A (en) * | 2013-08-23 | 2013-12-04 | 厦门大学 | Double-frequency microstrip antenna of lug tuning ring lamination coupling BeiDou |
| CN105470635B (en) * | 2015-12-11 | 2022-11-18 | 北京伯临通信科技有限公司 | Low-profile dual-frequency high-precision multimode navigation antenna |
| CN105470635A (en) * | 2015-12-11 | 2016-04-06 | 北京伯临通信科技有限公司 | Low-profile dual-frequency and high-precision multi-mode navigation antenna |
| CN107121718A (en) * | 2017-05-22 | 2017-09-01 | 中国科学院物理研究所 | Circuit polarizer and its manufacture method based on three dimensional fold Meta Materials |
| CN110718750A (en) * | 2019-11-13 | 2020-01-21 | 朴海燕 | Miniaturized and circularly polarized patch antenna |
| CN110718750B (en) * | 2019-11-13 | 2024-01-23 | 朴海燕 | Miniaturized and circularly polarized patch antenna |
| CN111916886A (en) * | 2020-07-03 | 2020-11-10 | 华南理工大学 | Enhanced spread spectrum broadband base station antenna and wireless communication equipment |
| CN112003022B (en) * | 2020-09-27 | 2023-05-23 | 南京信息工程大学 | Double-frequency circularly polarized microstrip antenna meeting Beidou satellite navigation |
| CN112003022A (en) * | 2020-09-27 | 2020-11-27 | 南京信息工程大学 | Double-frequency circularly polarized microstrip antenna meeting Beidou satellite navigation |
| CN112886272A (en) * | 2021-01-14 | 2021-06-01 | 西安电子科技大学 | Dual-frequency dual-polarization Fabry-Perot resonant cavity antenna |
| CN113363719A (en) * | 2021-06-24 | 2021-09-07 | 中国农业银行股份有限公司 | Microstrip antenna and electronic equipment based on beidou system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20180301 |
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| CF01 | Termination of patent right due to non-payment of annual fee |