CN102769183A - Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system - Google Patents
Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system Download PDFInfo
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- CN102769183A CN102769183A CN2012102435598A CN201210243559A CN102769183A CN 102769183 A CN102769183 A CN 102769183A CN 2012102435598 A CN2012102435598 A CN 2012102435598A CN 201210243559 A CN201210243559 A CN 201210243559A CN 102769183 A CN102769183 A CN 102769183A
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Abstract
The invention discloses a quadruple spiral distribution loading oscillator microstrip antenna applied to a Beidou system and relates to a microstrip patch antenna. The quadruple spiral distribution loading oscillator microstrip antenna applied to the Beidou system is low in echo loss, low in interference, high in gain, high in symmetry, high in integration level and miniature and has the directed radiation characteristics. The quadruple spiral distribution loading oscillator microstrip antenna applied to the Beidou system is provided with a substrate, wherein copper is coated on two sides of the substrate; the upper surface of the substrate is provided with a quadruple spiral oscillator arm structure; the sides of the quadruple spiral oscillator arm structure form a spiral oscillator in a rewinding form; a loading hole and a feed hole are formed in the spiral oscillator; the quadruple spiral oscillator arm structure is rewound by 720 degrees towards the center of each side; the lower surface of the substrate is provided with a grounding plate; the grounding plate is connected with an outer core of a feed copper axis; and the loading hole is connected with an inner core of the feed copper axis.
Description
Technical field
The present invention relates to a kind of micro-strip paster antenna, especially relate to a kind of four spiral distributed load oscillator microstrip antennas that are applied to dipper system.
Background technology
Since two thousand, China has succeeded in sending up navigation positioning satellite of 4 Big Dippeves and No. two navigation positioning satellites of 10 Big Dippeves, has built up navigation experiment system of the Big Dipper, and is building No. two global position systems of the Big Dipper covering the whole world.Antenna must an indispensable part as satellite communication system, is directly determining the performance of satellite communication system.No. two satellite communication systems of the Big Dipper of China work in B1 and B3 frequency range, up (tranmitting frequency) L frequency range and descending (receive frequency) S frequency range.Usually use double frequency or multifrequency to compensate the time-delay that ionospheric propagation causes, this just requires antenna on each frequency, all to have good working performance.In addition, because the satellite communication signal is a circularly polarised wave, antenna should present circular polarization.In today of information technology fast development; Extensive use along with satellite communication system; Research to the satellite communication system reception antenna emerges in an endless stream, and like one pole, bipolar, spiral, four arm spirals and microstrip antenna structure, all can be used in the various antennas of satellite communication system.Section is low, volume is little because of having for traditional microstrip antenna, in light weight, can be conformal, easy of integration, feeding classification flexibly, be convenient to obtain advantages such as linear polarization and circular polarization; In mobile communication; Satellite communication; Guided missile remote measurement, many fields such as Doppler radar have obtained to use widely, are the defectives of microstrip antenna but gain limited always.Along with the continuous development of digital communication technology, wireless network no longer only is a kind of means of computer link network online, and it is wireless, and mobile advantage is brought more comprehensive, novel, quick, cheap communication way for people.
Microstrip antenna is the one type of new antenna that grows up gradually over nearly 30 years, and because of its intrinsic advantage has obtained using widely, but it also has less, the shortcomings such as directivity is poor, the existence of surface wave, insufficient bandwidth of the gain of existence.So microstrip antenna furtherd investigate has that important project is worth and theory significance.In microstrip antenna designs, load coupled cavity technique and be the method for realization miniaturization commonly used in the antenna works; Through loading resistor, reactance or conductor improve the CURRENT DISTRIBUTION in the antenna in the appropriate location of antenna; Thereby reach the resonance frequency that changes antenna, perhaps under same operating frequency, reduce the height of antenna and the purposes such as antenna pattern that change antenna.The element that loads can be that passive device also can be an active network, can be that linear element also can be non-linear, and the most frequently used in the actual engineering is passive loading, as top-loaded, medium load, series arrangement loads, concentrate and load etc.For the not high situation of operating frequency normal adopt to concentrate load, when operating frequency is higher, then adopt distributed load, be to realize the valid approach of antenna miniaturization therefore through loading technique.The present invention has the array hole in the appropriate location of aerial radiation sheet, forms the distributed load structure, has improved the feed current distribution effectively, thereby has obtained good radiation pattern.And used four helical structures of novel improvements, in fact constituted array antenna, improved its gain, and optimized directivity.
Summary of the invention
The object of the present invention is to provide a kind of four spiral distributed load oscillator microstrip antennas that are mainly used in dipper system; Not only return loss is low; Disturb little; Gain, symmetry and integrated level are higher, miniaturization, and have the four spiral distributed load oscillator microstrip antennas that are applied to dipper system of directional radiation properties.
The present invention is provided with substrate; Two sides at substrate is covered with copper; The upper surface of substrate is provided with four helicon arm configurations; Each limit of said four helicon arm configurations form of unrolling forms helicon, in helicon, is provided with and loads hole and power feed hole, and said four helicon arm configurations unroll 720 ° to the center on each limit; The lower surface of substrate is a ground plate, and ground plate links to each other with the outer core of feedback copper axis, loads the hole and links to each other with the inner core of feedback copper axis.
Said substrate can adopt two-sided copper facing ceramic dielectric substrate, and the length of said substrate can be 40mm, the wide 40mm that can be, and height can be 3mm.
The loading circular hole can be adopted in said loading hole, and the diameter of circular hole can be 1.5mm ± 0.05mm, and circular hole distance each other can be 2mm ± 0.05mm.
Said power feed hole can adopt hollow cylinder, and the radius of hollow cylinder can be 1mm ± 0.05mm, and the height of hollow cylinder can be 3mm ± 0.05mm, and said hollow cylinder passes substrate.
The present invention compares with conventional microstrip antenna has following advantage:
The present invention uses the novel helicon of the high-performance of four helical structures, and on radiation element, has used the distributed load technology, through the complex optimum of series technique, has realized the further miniaturization of antenna, can satisfy the requirement of big-dipper satellite communication system well.
Owing to adopted above structure, realized radiation pattern control, make the present invention have the characteristics of directed radiation, and obtained higher gain.
Because adopt the form feed of copper axis offset-fed, this feed form makes that the S11 of antenna is lower, gain increases.
Owing to below the high-k substrate, ground plate is set, unit adds intense radiation thereby the mirror image that can produce novel four helicons of the present invention shakes, and can regulate and control the coupling electromagnetic parameter of distributed load again, has the coupling parameter multiplier effect.
Owing to adopted above structure, can reasonably optimize circular size and the feed position that loads the coupling lumen pore on the good conductor radiating surface, cover big-dipper satellite communication system frequency range as required, make it reach good electromagnetic property.
In sum, the present invention has that high symmetry, high integration, miniaturization, radiation characteristic are good, the high excellent comprehensive characteristic of gain, and cost low, be easy to integratedly, can satisfy of the basic demand of big-dipper satellite communication system to antenna.
Utilize structure composition optimization of the present invention; The segmentation spiral folds, be coupled with and be beneficial to the triggering multifrequency point; Combine with the distributed load technology simultaneously; Can under the prerequisite of miniaturization, cover Big Dipper different frequency, can be locked in Big Dipper series global position system and the gps system, also be expected to compatible other communications bands by demand is flexible.
Description of drawings
Fig. 1 is the structural representation of the four spiral distributed load oscillator microstrip antennas that are applied to dipper system of the embodiment of the invention.
Fig. 2 is return loss (S11) performance map of the embodiment of the invention.Wherein abscissa is represented frequency Frequency (GHz), and ordinate is represented return loss intensity The return loss of the antenna (dB).Coordinate among the figure is a rectangular coordinate.
Fig. 3 is the E face directional diagram of embodiment of the invention 2.495GHz frequency.Coordinate among the figure is polar coordinates.
Fig. 4 is the H face directional diagram of embodiment of the invention 2.495GHz frequency.Coordinate among the figure is polar coordinates.
Fig. 5 is the 3D antenna pattern of embodiment of the invention 2.495GHz frequency.Coordinate among the figure is polar coordinates.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described further.
Referring to Fig. 1; The embodiment of the invention is provided with substrate 1; Two sides at substrate 1 is covered with copper, and the upper surface of substrate 1 is provided with four helicon arm configurations, and each limit of said four helicon arm configurations form of unrolling forms helicon; In helicon, be provided with and load hole 2 and power feed hole 3, said four helicon arm configurations unroll 720 ° to the center on each limit; The lower surface of substrate 1 is a ground plate, and ground plate links to each other with the outer core of feedback copper axis, loads hole 2 and links to each other with the inner core of feedback copper axis.
Said substrate 1 adopts two-sided copper facing ceramic dielectric substrate, and the length of said substrate is 40mm, and wide is 40mm, and height is 3mm.
Said loading hole 2 is adopted and is loaded circular hole, and the diameter of circular hole is 1.5mm ± 0.05mm, and circular hole distance each other is 2mm ± 0.05mm.
Said power feed hole 3 adopts hollow cylinder, and the radius of hollow cylinder is 1mm ± 0.05mm, and the height of hollow cylinder is 3mm ± 0.05mm, and said hollow cylinder passes substrate 1.
Referring to Fig. 2, as can be seen from Figure 2, working frequency range of the present invention is 2.481～2.510GHz.All below 10dB, the minimum echo loss at the 2.495GHz place is 29.2dB to the return loss of this working frequency range internal antenna (S11), and the return loss performance that is illustrated in whole passband internal antenna can both reach the requirement index.The present invention is respectively 0.029G and 1.16% in absolute bandwidth and the relative bandwidth of 2.495GHz, and bandwidth is narrower, but stable performance can directed radiation, thereby can be advantageously applied in the big-dipper satellite communication system.
Referring to Fig. 3～5, Fig. 3 is the E face figure of 2.495GHz frequency, and Fig. 4 is the H face directional diagram of 2.495GHz frequency, and Fig. 5 is the 3D directional diagram of 2.495GHz frequency.From figure, find out that the present invention has directional radiation properties, can satisfy the requirement of big-dipper satellite and WIFI system, antenna is 5.697dB in the gain of 2.495GHz frequency, and radiance is superior.
The manufacturing mismachining tolerance of the embodiment of the invention to the situation that influences of antenna performance referring to table 1.
Table 1
Annotate: data are existing certain redundant in the table, and certain relevance is arranged between each parameter, and what provide is equalization characteristic,
Can be according to the demand particular design.
Manufacturing mismachining tolerance of the present invention is very big to the influence of each parameter of antenna, needs manufacturing process very fine.For example; When the spacing on width, slit and each limit in size, slit on the paster, the size of ceramic dielectric substrate, thickness, the feed position equal error of dielectric-slab metallisation good conductor layer are controlled in 0.01%; And the relative dielectric constant ERROR CONTROL of ceramic dielectric substrate is in 0.1% the time, and the antenna parameters changes little.
The embodiment of the invention has provided a four spiral distributed load oscillator microstrip antennas that are applied to dipper system.The embodiment of the invention has provided the antenna that a application band is the 2.495GHz dipper system.Embodiment high performance dielectric baseplate material can adopt 6～30 high-k quality material as substrate; The desirable relative dielectric constant of representative value is 10 composite ceramics; The length of side of ceramic dielectric plate is 30 ~ 50mm, and thick is 2 ~ 4mm, and representative value is the cuboid of 40mm * 40mm * 3mm.
The present invention is covered with the metal good conductor on two surfaces of ceramic dielectric substrate, as adopting copper or silver-colored material.Its upper surface good conductor is processed into four spiral distributed architectures of improvement, and each limit of this structure form of screw of unrolling has been carried out the prolongation of effective radiating side, and representative value is to unroll 720 ° to the center on each limit.On radiation patch, be evenly distributed with the loading circular hole, the radius of circular aperture is 0.80 ~ 1.60mm, between the circular hole at a distance of 1.8 ~ 2.2mm.Distributing point is positioned on some radiation outer arms, is 6.5 ~ 7.0mm with respect to the horizontal range of central point, is 6.9 ~ 7.1mm with respect to the vertical range of central point; The broadside spacing on itself and rectangle medium substrate border is 1.5 ~ 3mm.Can directly come to control flexibly frequency position and gain through the position of adjustment distributing point and the size of each circular hole.The ground plate of high-performance high-k substrate below can generate the mirror image radiation and the mirror image coupling of this new construction antenna, optimal control radiation characteristic thus.
Claims (5)
1. be applied to four spiral distributed load oscillator microstrip antennas of dipper system; It is characterized in that being provided with substrate; Two sides at substrate is covered with copper, and the upper surface of substrate is provided with four helicon arm configurations, and each limit of said four helicon arm configurations form of unrolling forms helicon; In helicon, be provided with and load hole and power feed hole, said four helicon arm configurations unroll 720 ° to the center on each limit; The lower surface of substrate is a ground plate, and ground plate links to each other with the outer core of feedback copper axis, loads the hole and links to each other with the inner core of feedback copper axis.
2. the four spiral distributed load oscillator microstrip antennas that are applied to dipper system as claimed in claim 1 is characterized in that said substrate adopts two-sided copper facing ceramic dielectric substrate.
3. according to claim 1 or claim 2 four spiral distributed load oscillator microstrip antennas that are applied to dipper system, the length that it is characterized in that said substrate is 40mm, and wide is 40mm, and height is 3mm.
4. the four spiral distributed load oscillator microstrip antennas that are applied to dipper system as claimed in claim 1 is characterized in that the employing of said loading hole loads circular hole, and the diameter of circular hole is 1.5mm ± 0.05mm, and circular hole distance each other is 2mm ± 0.05mm.
5. the four spiral distributed load oscillator microstrip antennas that are applied to dipper system as claimed in claim 1; It is characterized in that said power feed hole adopts hollow cylinder; The radius of hollow cylinder is 1mm ± 0.05mm, and the height of hollow cylinder is 3mm ± 0.05mm, and said hollow cylinder passes substrate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210243559.8A CN102769183B (en) | 2012-07-13 | 2012-07-13 | Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311662A (en) * | 2013-05-16 | 2013-09-18 | 厦门大学 | Multi-frequency round Beidou patch antenna with recursive coupled cavities |
| CN104064860A (en) * | 2014-07-01 | 2014-09-24 | 石松程 | Antenna based on bipolar microstrip oscillator with safety rods |
| CN104681973A (en) * | 2015-03-10 | 2015-06-03 | 中天宽带技术有限公司 | Microstrip patch antenna based on photonic crystal structure |
| CN106803614A (en) * | 2016-11-24 | 2017-06-06 | 北京航空航天大学 | The determination method and device of the feed port of high temperature resistant multi-mode antenna for satellite navigation |
| CN108832275A (en) * | 2018-07-24 | 2018-11-16 | 厦门大学嘉庚学院 | Four helical antenna of mobile digital TV induction arrays |
| CN109728433A (en) * | 2019-01-24 | 2019-05-07 | 厦门大学嘉庚学院 | Four spiral slit Fractal array ultra-wide band antennas |
| CN113451750A (en) * | 2020-03-24 | 2021-09-28 | 绵阳北星通信科技有限公司 | Zero-phase Beidou third-generation high-dynamic antenna |
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| WO2008059294A1 (en) * | 2006-11-16 | 2008-05-22 | Roke Manor Research Limited | Feed of high accuracy satellite positioning spiral and helical antennas |
| CN102157789A (en) * | 2011-02-12 | 2011-08-17 | 厦门大学 | Improved Cantor fractal microstrip antenna with distributed loading coupling cavity |
| CN101304115B (en) * | 2008-06-27 | 2012-01-04 | 厦门大学 | Photon band-gap double-folding dipole dual frequency band antenna |
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2012
- 2012-07-13 CN CN201210243559.8A patent/CN102769183B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008059294A1 (en) * | 2006-11-16 | 2008-05-22 | Roke Manor Research Limited | Feed of high accuracy satellite positioning spiral and helical antennas |
| CN101304115B (en) * | 2008-06-27 | 2012-01-04 | 厦门大学 | Photon band-gap double-folding dipole dual frequency band antenna |
| CN102157789A (en) * | 2011-02-12 | 2011-08-17 | 厦门大学 | Improved Cantor fractal microstrip antenna with distributed loading coupling cavity |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311662A (en) * | 2013-05-16 | 2013-09-18 | 厦门大学 | Multi-frequency round Beidou patch antenna with recursive coupled cavities |
| CN103311662B (en) * | 2013-05-16 | 2015-02-04 | 厦门大学 | Multi-frequency round Beidou patch antenna with recursive coupled cavities |
| CN104064860A (en) * | 2014-07-01 | 2014-09-24 | 石松程 | Antenna based on bipolar microstrip oscillator with safety rods |
| CN104064860B (en) * | 2014-07-01 | 2016-05-04 | 湖南欧姆电子有限公司 | Taking the micro-strip oscillator of bipolarity band safety pole as basic antenna |
| CN104681973A (en) * | 2015-03-10 | 2015-06-03 | 中天宽带技术有限公司 | Microstrip patch antenna based on photonic crystal structure |
| CN104681973B (en) * | 2015-03-10 | 2017-12-22 | 中天宽带技术有限公司 | A kind of micro-strip paster antenna based on photon crystal structure |
| CN106803614A (en) * | 2016-11-24 | 2017-06-06 | 北京航空航天大学 | The determination method and device of the feed port of high temperature resistant multi-mode antenna for satellite navigation |
| CN106803614B (en) * | 2016-11-24 | 2020-05-12 | 北京航空航天大学 | Method and device for determining feed port of high-temperature-resistant multi-mode satellite navigation antenna |
| CN108832275A (en) * | 2018-07-24 | 2018-11-16 | 厦门大学嘉庚学院 | Four helical antenna of mobile digital TV induction arrays |
| CN108832275B (en) * | 2018-07-24 | 2023-08-01 | 厦门大学嘉庚学院 | Mobile digital television induction array four-spiral antenna |
| CN109728433A (en) * | 2019-01-24 | 2019-05-07 | 厦门大学嘉庚学院 | Four spiral slit Fractal array ultra-wide band antennas |
| CN113451750A (en) * | 2020-03-24 | 2021-09-28 | 绵阳北星通信科技有限公司 | Zero-phase Beidou third-generation high-dynamic antenna |
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