CN101136503A - Ring satellite navigation antenna for improving low elevation gain and method for making same - Google Patents
Ring satellite navigation antenna for improving low elevation gain and method for making same Download PDFInfo
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- CN101136503A CN101136503A CNA2007101211141A CN200710121114A CN101136503A CN 101136503 A CN101136503 A CN 101136503A CN A2007101211141 A CNA2007101211141 A CN A2007101211141A CN 200710121114 A CN200710121114 A CN 200710121114A CN 101136503 A CN101136503 A CN 101136503A
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Abstract
This invention relates to a ring satellite navigation antenna for increasing low elevation gain including: a microwave base board, a ring sheet antenna, four short circuit pins, a hollow metal short circuit column, a quartering power divider and four feed probes, in which, the microwave base board includes a first surface and a second surface, the ring sheet antenna is positioned on the first surface of the base board, the four short circuit pins are placed on the edges of the internal ring of the antenna symmetrically to pass through the base board and connect the antenna with the second surface of the board, the four feed pins are placed on the feeding positions symmetrically with the top contacting to the antenna and the bottom is connected with the four output ends of the quartering power divider, which works at 1.559GHz/1.575GHz suitable for the navigation terminals of GPS/GALLEO/BD2 systems.
Description
Technical field
The present invention relates to a kind of satellite navigation aerial, particularly a kind of annular satellite navigation aerial that improves low elevation gain and preparation method thereof.
Background technology
Flourish along with satellite navigation, location technology, the GPS (Global Position System) of the numerous and confused exploitation in various countries oneself, simultaneously, increasing satellite navigation terminal equipment enters in the middle of national defence, civilian and everybody daily life, work, people propose higher requirement for the stability of satellite navigation system, reliability, for this reason, design and a kind ofly can receive a plurality of satellite navigation signals simultaneously, the antenna system of continous-stable satellite navigation signals is provided, has become a hot technology.
Satellite navigation terminal is made up of receiver and antenna at least, and the major function of antenna is to be used to receive navigation signal, so Antenna Design is even more important for the quality of navigation system.Antenna Design of today not only will satisfy the requirement that the user is docked receiving satellite navigation signal quality, also will meet the requirement of navigation terminal volume miniaturization, so antenna takies less spatial volume as far as possible, guarantees antenna performance preferably simultaneously.
Generally speaking, the antenna form that is applied at present in the satellite navigation terminal mainly contains: helical antenna, offset printing antenna, slot antenna.Helical antenna has circular polarization performance preferably, but spatial volume is bigger, be difficult for built-in, be difficult for and carrier conformal.Slot antenna is because the discontinuity of conductive surface produces stronger higher mode radiation, and low elevation angle circular polarization effect is unsatisfactory, and feeding classification is difficult for realizing.The offset printing antenna has complanation, and is simple in structure, and it is little to take up room, and characteristics such as design handling ease are widely used in the middle of the various wireless communication terminal in recent years.But, adopting conventional design, the impedance bandwidth of plate aerial and circular polarization bandwidth are all narrower, and low elevation gain also is difficult to satisfy the requirement of satellite navigation receiver.In order to guarantee that satellite navigation aerial has smaller volume, be easy to the advantage conformal, built-in with carrier, the present invention improves mentality of designing and method on the basis of plate aerial, design a kind of brand-new satellite navigation aerial.
Summary of the invention
Main purpose of the present invention provides a kind of annular satellite navigation aerial that improves low elevation gain and preparation method thereof, this antenna has higher low elevation gain, the bandwidth of broad, work in the 1.559GHz/1.561GHz/1.575GHz frequency band, in the navigation terminal applicable to three satellite navigation systems of GPS/GALLEO/BD2.
Secondary objective of the present invention provides a kind of simple in structure, and it is little to take up room, and can the low-cost antenna of making.
Technical solution of the present invention: a kind of annular satellite navigation aerial that improves low elevation gain, its characteristics are to comprise at least: microwave base plate, the ring attaching chip antenna, four short circuit metal pins, hollow metal short circuit cylinder, quartering power splitter, four feed probes, microwave base plate has first surface and second surface, ring attaching sheet annular antenna is positioned on the first surface of this microwave base plate, four short circuit pins are placed in the edge of ring in the loop aerial symmetrically, penetrate microwave base plate, the second surface of ring attaching chip antenna and microwave base plate is coupled together, or be placed in the edge of ring in the loop aerial with hollow metal short circuit cylinder, the second surface of ring attaching chip antenna and microwave base plate is coupled together; Four feed probes are placed in feed placement symmetrically, and the upper end contacts annular paster antenna, pass microwave base plate after, the lower end connects four outputs of quartering power splitter respectively.
Quartering power splitter adopts annular branch coupler and rectangle branch coupler mixed structure, each output port that is annular branch coupler connects a rectangle branch coupler respectively, the line length that connects annular branch coupler and rectangle branch coupler differs quarter-wave, and connecting line is etched on the two-sided microwave base plate.Two output ports of annular branch coupler are respectively quarter-waves apart from input, or 1/2nd wavelength; The length of side of rectangle branch coupler is a quarter-wave.The hem width of annular branch coupler and rectangle branch coupler is corresponding characteristic impedance 75 or 35 ohm respectively.
The method for preparing above-mentioned antenna comprises that step is as follows:
(1) on the wherein one side of a two-sided microwave copper-clad base plate, obtain a desired metal ring, this annulus is exactly the main radiant body of antenna, keeps the floor of the another side of double face copper as antenna;
(2) medium resection of the microwave copper-clad plate substrate that the internal circle bound pair of metal ring is answered, reduce the radiation of higher mode, improve the circular polarization performance, and at four short circuit metal probes of the symmetrical placement of the internal circle edge of metal ring, guarantee that probe couples together metal ring and metal floor, perhaps the metal cylinder with a hollow couples together metal ring and metal floor, in broadening impedance bandwidth and circular polarization bandwidth, and the radiation of compacting higher mode;
(3) reduce the size on antenna floor, the size that guarantees the antenna floor is between the substrate boundaries of the cylindrical border of metal ring and microwave copper-clad plate, the size of extend outwards medium substrate, and meet design requirement, to strengthen the horizontal radiation intensity of antenna, improve low elevation gain;
(4) according to design optimization, four feed probes are installed in the relevant position of metal ring near external boundary, linking probe and quartering power splitter are to obtain circular polarization performance preferably.
The present invention's advantage compared with prior art is: because contract in structure of the present invention and distinctive removal substrate intermediate medium technology, the floor technology, short circuit technology, reduced the influence of higher mode, improve low elevation gain and frequency bandwidth, obtained circular polarization effect preferably.In addition, the present invention is produced on the microwave base plate, relies on existing advanced person's photograph, photoetching technique can organize batch machining production, has guaranteed the quality of antenna, has reduced the antenna cost.On the present invention can be used for vehicle-mounted, the airborne and carrier-borne satellite navigation receiver, has high industry using value.
Description of drawings
Fig. 1 is a vertical view of the present invention;
Fig. 2 is a front view of the present invention;
Fig. 3 is a quartering power splitter vertical view of the present invention;
Low elevation gain curve when Fig. 4 spends for antenna of the present invention 70 degree and 85,70 when spending greater than 0dB, 85 when spending greater than-3.07dB;
Fig. 5 is an antenna impedance bandwidth curve of the present invention, standing-wave ratio less than 1.5 Time Bandwidths greater than 80MHz.
Embodiment
As Fig. 1, shown in 2, structure of the present invention comprises: microwave base plate 1, ring attaching chip antenna 2, four short circuit metal pins 3 (mainly are copper, also can be the metal of other conduction), hollow metal short circuit cylinder 4 (mainly is copper, also can be the metal of other conduction), quartering power splitter 5, four feed probes 6, microwave base plate 1 has first surface and second surface, ring attaching sheet annular antenna 2 is positioned on the first surface of microwave base plate 1, four short circuit metal pins 3 (diameter is 0.5-1.5mm) are placed in the edge of ring in the loop aerial symmetrically, penetrate microwave base plate 1, the second surface of ring attaching chip antenna 2 with microwave base plate 1 coupled together, or be placed in the edge of ring in the loop aerial with hollow metal short circuit cylinder 4, the second surface of ring attaching chip antenna and microwave base plate is coupled together; Four feed probes 6 are placed in feed placement symmetrically, and the upper end contacts annular paster antenna 2, pass microwave base plate 1 after, the lower end connects four output ports 13 of quartering power splitter 5 respectively.From the signal of navigation satellite because electromagnetic induction effect induces electric field on antenna, grounding probe or short circuit cylinder make Electric Field Distribution more even, thereby obtain the pattern that needs, improved the circular polarization performance, increased bandwidth; Contract in the floor and the extension of microwave base plate makes horizontal radiation strengthen, low elevation gain increases; Quartering power splitter is used for improving the circular polarization performance.
As shown in Figure 3, quartering power splitter 5 adopts annular branch coupler 12 and rectangle branch coupler 11 mixed structures, and annular branch coupler two output ports are respectively 1/4th apart from input 14, or 1/2nd wavelength; The length of side of rectangle branch coupler is a quarter-wave.The hem width of annular branch coupler and rectangle branch coupler is corresponding characteristic impedance 75 or 35 ohm respectively; The fillet appearance difference quarter-wave of annular branch coupler and rectangle branch coupler, connection is etched on the two-sided microwave base plate.
Antenna preparation method of the present invention is: after determining the initial designs size according to the antenna working frequency range, modeling in the Electromagnetic Simulation private environment, emulation can obtain design size, and can observe the relevant performance parameter of antenna after optimizing; According to the design of Simulation size, draw the engineering manuscript, just can obtain satisfied antenna material object through photograph, photoetching, corrosion.
By the metal ring of taking a picture, photoetching corrosion obtains to conform with size on the one side of double face copper, this annulus is exactly the main radiant body of antenna, and the another side of double face copper is as the floor of antenna; The substrate media of excision annulus inner boundary corresponding position is installed four short circuit pins (or hollow metal cylinder) in annulus inward flange symmetry, guarantees antenna floor and annulus are coupled together; Reduce the size of metal floor according to design size, guarantee the size of medium substrate extend outwards; Four feed probes are installed at external boundary distributing point place at annulus, and four outputs with probe and quartering power splitter at last couple together respectively, guarantee to meet the requirement of right-handed circular polarization.
As shown in Figure 4, low elevation gain curve when antenna of the present invention 70 degree and 85 are spent, 70 when spending greater than 0dB, 85 when spending greater than-3.07dB, the low elevation gain that shows antenna of the present invention is better than and has the satellite navigation mobile terminal antenna now.
As shown in Figure 5, antenna impedance bandwidth curve of the present invention, standing-wave ratio less than 1.5 Time Bandwidths greater than 80MHz, the impedance bandwidth broad that shows antenna of the present invention, can cover the 1.559GHz/1.561GHz/1.575GHz frequency band, in the navigation terminal applicable to three satellite navigation systems of GPS/GALLEO/BD2.
Claims (8)
1. annular satellite navigation aerial that improves low elevation gain, it is characterized in that comprising: microwave base plate (1), ring attaching chip antenna (2), four short circuit metal pins (3), hollow metal short circuit cylinder (4), quartering power splitter (5) and four feed probes (6), described microwave base plate (1) has first surface and second surface, described ring attaching chip antenna (2) is positioned on the first surface of this microwave base plate (1), four short circuit metal pins (3) are placed in the edge of ring in the loop aerial symmetrically, penetrate microwave base plate (1), the second surface of ring attaching chip antenna (2) with microwave base plate (1) coupled together, or be placed in the edge of ring in the loop aerial with hollow metal short circuit cylinder (4), the second surface of ring attaching chip antenna (2) with microwave base plate coupled together; Four feed probes (6) are placed in feed placement symmetrically, and the upper end contacts annular paster antenna (2), pass microwave base plate (1) after, the lower end connects four outputs of quartering power splitter (5) respectively.
2. a kind of annular satellite navigation aerial that improves low elevation gain according to claim 1, it is characterized in that: described quartering power splitter (5) adopts annular branch coupler and rectangle branch coupler mixed structure, each output port that is annular branch coupler connects the rectangle branch coupler respectively, the line length that connects annular branch coupler and rectangle branch coupler differs quarter-wave, and connecting line is etched on the two-sided microwave base plate.
3. a kind of annular satellite navigation aerial that improves low elevation gain according to claim 2 is characterized in that: described annular branch coupler two output ports are respectively 1/4th apart from input, or 1/2nd wavelength.
4. a kind of annular satellite navigation aerial that improves low elevation gain according to claim 2, it is characterized in that: the length of side of described rectangle branch coupler is a quarter-wave.
5. a kind of annular satellite navigation aerial that improves low elevation gain according to claim 1 is characterized in that: the diameter of described four short circuit metal probes is 0.5-1.5mm.
6. prepare the method for the annular satellite navigation aerial of the described raising low elevation gain of claim 1, it is characterized in that step is as follows:
(1) on the wherein one side of a two-sided microwave copper-clad base plate, obtain a desired metal ring, this annulus is exactly the main radiant body of antenna, keeps the floor of the another side of double face copper as antenna;
(2) medium resection of the microwave copper-clad plate substrate that the internal circle bound pair of metal ring is answered, reduce the radiation of higher mode, improve the circular polarization performance, and at four short circuit metal probes of the symmetrical placement of the internal circle edge of metal ring, guarantee that probe couples together metal ring and metal floor, perhaps the metal cylinder with a hollow couples together metal ring and metal substrate, can broadening impedance bandwidth and circular polarization bandwidth, and the radiation of compacting higher mode;
(3) reduce the size on antenna floor, the size that guarantees the antenna floor is between the substrate boundaries of the cylindrical border of metal ring and microwave copper-clad plate, the size of extend outwards medium substrate, and meet design requirement, to strengthen the horizontal radiation intensity of antenna, improve low elevation gain;
(4) according to design optimization, four feed probes are installed in the relevant position of metal ring near external boundary, connect four metal probes and quartering power splitter, to obtain circular polarization performance preferably.
7. preparation method according to claim 6 is characterized in that: described step (1) adopts the method for photomechanical process or photoetching corrosion to obtain to obtain a desired metal ring on the wherein one side of two-sided microwave copper-clad plate.
8. preparation method according to claim 6 is characterized in that: the diameter of four short circuit metal probes in the described step (1) is 0.5-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101211141A CN101136503B (en) | 2007-08-30 | 2007-08-30 | Ring satellite navigation antenna for improving low elevation gain and method for making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101211141A CN101136503B (en) | 2007-08-30 | 2007-08-30 | Ring satellite navigation antenna for improving low elevation gain and method for making same |
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| Publication Number | Publication Date |
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| CN101136503A true CN101136503A (en) | 2008-03-05 |
| CN101136503B CN101136503B (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101211141A Expired - Fee Related CN101136503B (en) | 2007-08-30 | 2007-08-30 | Ring satellite navigation antenna for improving low elevation gain and method for making same |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247858A (en) * | 2013-04-26 | 2013-08-14 | 清华大学 | Metallic waveguide antenna with characteristics of bi-direction synchronous rotation and double circular polarization wave radiation |
| CN101587984B (en) * | 2009-06-18 | 2013-09-11 | 上海交通大学 | Boradband miniaturisation four-terminal port antennae located on the cylinder conductor platform |
| CN103794846A (en) * | 2014-01-17 | 2014-05-14 | 复旦大学 | Double-frequency circularly polarized Beidou antenna |
| US20150155630A1 (en) * | 2012-07-04 | 2015-06-04 | Nihon Dengyo Kosaku Co., Ltd. | Vertically polarized antenna |
| CN104868236A (en) * | 2015-04-16 | 2015-08-26 | 深圳市华信天线技术有限公司 | Load resistant microstrip antenna |
| CN105896104A (en) * | 2016-04-11 | 2016-08-24 | 中国人民解放军国防科学技术大学 | LS dual-band high-precision antenna for Beidou satellite navigation system ground monitoring station |
| CN105914465A (en) * | 2016-04-15 | 2016-08-31 | 上海安费诺永亿通讯电子有限公司 | Circularly-polarized antenna and wireless communication device thereof |
| CN111293428A (en) * | 2019-01-31 | 2020-06-16 | 展讯通信（上海）有限公司 | Patch antenna unit and packaging antenna structure |
| CN113300088A (en) * | 2021-04-25 | 2021-08-24 | 北京合众思壮科技股份有限公司 | Planar helical antenna device |
| CN114520415A (en) * | 2020-11-18 | 2022-05-20 | 稜研科技股份有限公司 | Broadband linear polarization antenna structure |
| CN114824766A (en) * | 2021-01-19 | 2022-07-29 | 大唐移动通信设备有限公司 | Multi-mode navigation antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3464277B2 (en) * | 1994-06-20 | 2003-11-05 | 株式会社東芝 | Circularly polarized patch antenna |
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2007
- 2007-08-30 CN CN2007101211141A patent/CN101136503B/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587984B (en) * | 2009-06-18 | 2013-09-11 | 上海交通大学 | Boradband miniaturisation four-terminal port antennae located on the cylinder conductor platform |
| US20150155630A1 (en) * | 2012-07-04 | 2015-06-04 | Nihon Dengyo Kosaku Co., Ltd. | Vertically polarized antenna |
| CN104718663A (en) * | 2012-07-04 | 2015-06-17 | 日本电业工作株式会社 | Vertically polarized wave antenna |
| CN103247858A (en) * | 2013-04-26 | 2013-08-14 | 清华大学 | Metallic waveguide antenna with characteristics of bi-direction synchronous rotation and double circular polarization wave radiation |
| CN103794846A (en) * | 2014-01-17 | 2014-05-14 | 复旦大学 | Double-frequency circularly polarized Beidou antenna |
| CN104868236A (en) * | 2015-04-16 | 2015-08-26 | 深圳市华信天线技术有限公司 | Load resistant microstrip antenna |
| CN105896104A (en) * | 2016-04-11 | 2016-08-24 | 中国人民解放军国防科学技术大学 | LS dual-band high-precision antenna for Beidou satellite navigation system ground monitoring station |
| CN105914465A (en) * | 2016-04-15 | 2016-08-31 | 上海安费诺永亿通讯电子有限公司 | Circularly-polarized antenna and wireless communication device thereof |
| CN111293428A (en) * | 2019-01-31 | 2020-06-16 | 展讯通信（上海）有限公司 | Patch antenna unit and packaging antenna structure |
| CN111293428B (en) * | 2019-01-31 | 2021-03-16 | 展讯通信（上海）有限公司 | Patch antenna unit and packaging antenna structure |
| US11367943B2 (en) | 2019-01-31 | 2022-06-21 | Spreadtrum Communications (Shanghai) Co., Ltd. | Patch antenna unit and antenna in package structure |
| CN114520415A (en) * | 2020-11-18 | 2022-05-20 | 稜研科技股份有限公司 | Broadband linear polarization antenna structure |
| CN114824766A (en) * | 2021-01-19 | 2022-07-29 | 大唐移动通信设备有限公司 | Multi-mode navigation antenna |
| CN114824766B (en) * | 2021-01-19 | 2023-05-26 | 大唐移动通信设备有限公司 | Multi-mode navigation antenna |
| CN113300088A (en) * | 2021-04-25 | 2021-08-24 | 北京合众思壮科技股份有限公司 | Planar helical antenna device |
| CN113300088B (en) * | 2021-04-25 | 2024-05-28 | 北京合众思壮科技股份有限公司 | Planar helical antenna device |
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| CN101136503B (en) | 2011-09-28 |
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