CN202564548U - Four-point circular polarization feed network - Google Patents
Four-point circular polarization feed network Download PDFInfo
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- CN202564548U CN202564548U CN2011205346031U CN201120534603U CN202564548U CN 202564548 U CN202564548 U CN 202564548U CN 2011205346031 U CN2011205346031 U CN 2011205346031U CN 201120534603 U CN201120534603 U CN 201120534603U CN 202564548 U CN202564548 U CN 202564548U
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Abstract
The utility model discloses a four-point circular polarization feed network. The feed network utilizes small-spacing symmetric dielectric three-plate wire design, and is composed of an upper baseboard and a lower baseboard of an antenna earth plate cavity, and two dielectric micro-strip boards which are arranged between the upper baseboard and the lower baseboard of the antenna earth plate cavity. The feed network comprises power dividers and broadband phase shifters, wherein the power dividers and the broadband phase shifters are connected in series and in parallel on the dielectric micro-strip boards. The feed network achieves four-point circular polarization feed of broadband of satellite navigation frequency ranges. By means of the way that the power dividers and the broadband phase shifters are connected in series and in parallel, the feed network forms the good four-point circular polarization feed for external conductive bodies, working frequency ranges of the four-point circular polarization feed cover the whole satellite navigation frequency ranges.
Description
Technical field
The utility model relates to a kind of GNSS (Global Navigation Satellite System, global navigation satellite navigation system) user's compatible receiver antenna, relates in particular to 4 circular polarization feeding networks in the plate array antenna of a kind of anise.
Background technology
GNSS has many-sided powers such as round-the-clock location navigation, high-precision time service calibrating frequency, automation and accurate measurement efficiently, has developed into global, a multi-field high-tech industry.With GPS (Global Positioning System; Global positioning system) constantly perfect for the GNSS of representative; Traditional single-mode single-frequency receiver more and more can not satisfy application demand; How GNSS system and the gps system with other integrates more stable, more reliable, safer high accuracy of realization and real-time navigation location, become current receiver user research hot issue.Research for multifrequency, multimode GNSS receiver has very important meaning.In the GNSS receiver system, supporting therewith antenna is the critical component of this system.Realize that wherein 4 the circular polarization feeds in broadband to antenna are again key technologies of this antenna.Present networks is exactly antenna to be realized the equipment of above-mentioned feed.
In the prior art; Antenna commonly used has micro-strip paster antenna; Four-arm spiral antenna and multi-arm snail seam antenna etc., existing antenna is difficult to satisfy fully the requirement of GNSS compatible receiver to the high accuracy carrier phase measurement at the harmonious and good aspects such as wide-angle circular polarization characteristics of service band, phase center stability, ability of anti-multipath, circular polarization gain.
The utility model content
The purpose of the utility model provides a kind of feeding network, and this feeding network has good broadband, 4 circular polarization feed characteristics.
The purpose of the utility model realizes through following technical scheme:
A kind of 4 circular polarization feeding networks; Said feeding network has adopted closely spaced symmetric form medium three printed lines design; Constitute by the upper and lower base plate in antenna ground plate chamber and two little band plates of medium therebetween; Comprise: power splitter and wideband phase shift device, said power splitter and wideband phase shift device are connected on the little band plate of medium and are connected in parallel, and said feeding network is realized the feed of wide band 4 circular polarization of satellite navigation frequency range.
Be closed in upper and lower medium plate three printed lines in the antenna ground plate chamber and pass king's font isolate conductive piece of upper and lower dielectric-slab in the base plate chamber centre, be fixed with one through securing member and antenna ground plate chamber.
Technical scheme by above-mentioned the utility model provides can find out that the feeding network of the utility model has formed 4 the good circular polarization feeds to external current conductor through adopting the series connection of power splitter and wideband phase shift device and being connected in parallel.
Description of drawings
The planar structure sketch map of the feeding network that Fig. 1 provides for the utility model embodiment.
Embodiment
Satisfy the requirement of GNSS compatible receiver, promptly which kind of antenna no matter multifrequency, multimode operation pattern adopt, and must possess multifrequency broadband and good wide-angle circular polarization characteristics, and what play a decisive role is exactly feeding network.The utility model just provides a kind of antenna feeding network that reaches its requirement.
To combine accompanying drawing that the embodiment work of the utility model is described in detail further below.
The feeding network of the utility model, its preferable embodiment is as shown in Figure 1:
Feeding network comprises: the first bisection power splitter (11), the second bisection power splitter (12) and the 3rd bisection power splitter (13) be totally 3 bisection power splitters; The one 90 ° of broad-band phase shifter (14), the 2 90 ° of broad-band phase shifter (15) be totally 2 90 ° of broad-band phase shifters and 1 180 ° broad-band phase shifters (16), and the first circular polarization feed end points (17), the second circular polarization feed end points (18), the 3rd circular polarization feed end points (19), the 4th circular polarization feed end points (20) totally 4 circular polarization feed end points.
Above-mentioned broad-band phase shifter can comprise 90 ° broad-band phase shifter and 180 ° broad-band phase shifter for Xi Fumen (Schiffman) broad-band phase shifter of strap line style.Described power splitter comprises 3 bisection power splitters.Above-mentioned power splitter and broad-band phase shifter are connected in series on feeding network and are connected in parallel.
4 feed end points of above-mentioned feeding network are positioned at the medium position of feeding network, are respectively among the figure the 17th, 18,19,20.Above-mentioned 4 feed end points are corresponding with the receiver antenna port, form constant amplitude, 90 ° feed relation respectively.Identical, the phase place mutually orthogonal of power of the signal of telecommunication of above-mentioned 4 circular polarization feed end points output; The phase place of the signal of telecommunication of 4 circular polarization feed end points outputs can be respectively 0 ° ,-90 ° ,-180 ° and-270 °, thereby forms 4 circular polarization feeds to external current conductor.In practical application, the phase place of the signal of telecommunication of above-mentioned 4 circular polarization feed end points output can clockwise or be rotated counterclockwise, and can form the circular polarization feed of any rotation direction according to instructions for use.
The port that above-mentioned feeding network links to each other with receiver is near the feeder panel center, and the end points 1 as among the figure is divided into two paths of signals to power signal by the constant amplitude homophase through first second-class power splitter (11) thus; This two paths of signals makes and has formed 180 ° of phase differences between this two paths of signals through first 180 ° of phase shifters (16), down tells four road signals again through the the 2nd (12) and the 3rd (13) power splitter respectively again; Do not produce additional phase shift around here; Four road signals are respectively through the the 2nd (14) and the 3rd (15) 90 ° of phase shifters afterwards, to label be 17,18; Four ports of 19,20.Formed on these four ports that amplitude equates, phase place is poor each other is 4 circular polarization feeds relations of 90 °.Corresponding with the antenna respectively port of these 4 ports links to each other, and edge+Z direction forms right-handed circular polarization (RHCP) shown in figure, and this goes out to hold for another of above-mentioned feeding network.There is a likeness in form ' king ' word to empty at the dielectric-slab center, embeds a metallic conduction piece (10) that flushes with the upper and lower medium plate here.Have ' king ' word conducting block and two dielectric-slabs are assembled in the antenna ground plate chamber, be connected completion with receiver end by aforementioned regulation and 4 antenna end after, add trip bolt.
The feeding network of the utility model has adopted closely spaced symmetric form medium three printed line structures, can form bilevel medium three printed line structures.
The antenna that above-mentioned feeding network links to each other has 4 feed ends, passes ground plate through its inner wire probe and is connected with 4 via hole 4 feed end points corresponding with feeding network that metallize on the last dielectric-slab; The feeding network other end links to each other with receiver, links to each other with RF socket inner core on being installed in down ground plate through following dielectric-slab metallization via hole; This socket can stretch out from base plate center or side, and the RF socket adopts SMA/TNC (F) form all can.The other end of above-mentioned feeding network also can link to each other with the rf inputs near thereafter preamplifier or low noise amplifier (LNA) and be formed with source antenna; Above-mentioned feeding network output connects the output of above-mentioned preamplifier or low noise amplifier; This package assembly except that compactedness, globality, easy of integration, also have good Electro Magnetic Compatibility;
The feeding network of the utility model can be arranged in the GNSS receiver user antenna, and whole feeding network is confined in the disc that diameter is no more than 180mm, is closed in the antenna ground plate cylindrical cavity that inner height 4mm, a diameter is no more than Φ 180mm.Specifically can seal in the ground plate cylindrical cavity that is arranged at GNSS receiver user antenna.Inner at the ground plate cylindrical cavity; Pass upper and lower two-layer medium three printed lines king's font isolate conductive piece (10) can be set; Utilize screw to pass through the connecting hole that distributes on isolate conductive piece and medium three printed lines, be fixed with one the upper and lower two-layer dielectric-slab and the upper and lower ground plate of ground plate cylindrical cavity.Thereby guarantee precision, the structure fastness of feeding network assembling, the peaceful Lamb wave mould that influences each other that has reduced between the feeding network band line that gathers produces, and obtains good circular polarization network feed performance.
Be closed in upper and lower medium plate three printed lines in the antenna ground plate chamber and pass king's font isolate conductive piece of upper and lower dielectric-slab in the base plate chamber centre, be fixed with one through securing member and antenna ground plate chamber.
It is understandable that; In practical application; The connected mode of said bisection power splitter and broad-band phase shifter and 4 circular polarization feed end points and bisection power splitter; The connected mode of broad-band phase shifter can change accordingly, and these schemes that are equal to are technology known in those skilled in the art all, are not described in detail in this.
The technological merit of the feeding network of the utility model specific embodiment is following: the working frequency range of 4 circular polarization feeds has covered whole satellite navigation frequency range; In the 1.1GHz-1.7GHz band; The input and output standing-wave ratio can be controlled in below 1.5, and this feeding network adopts 4 circular polarization feeding classifications to make continuous radiation pattern have good circular symmetry and good wide-angle circular polarization characteristics.Can in ± 70 ° work angular domain, reach AR≤2dB, the circle asymmetry≤± the 1dB design performance; Broken through hard case that feeding network is difficult for getting both at aspects such as frequency band, symmetry and circular polarization, simultaneously the outstanding advantage aspect globality, easy of integration and Electromagnetic Compatibility.This feeding network technical guarantee the application need of high-acruracy survey type GNSS compatible receiver, be the desirable feed structure of following GNSS compatible receiver, solid technical foundation has been established in the development and the industrialization of high-acruracy survey type receiver.
The above; Be merely the preferable embodiment of the utility model; But the protection range of the utility model is not limited thereto; Any technical staff who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection range of the utility model.Therefore, the protection range of the utility model should be as the criterion with the protection range of claims.
Claims (9)
1. 4 circular polarization feeding networks; It is characterized in that; Said feeding network has adopted closely spaced symmetric form medium three printed lines design, is made up of the upper and lower base plate in antenna ground plate chamber and two little band plates of medium therebetween, comprising: power splitter and wideband phase shift device; Said power splitter and wideband phase shift device are connected on the little band plate of medium and are connected in parallel, and said feeding network is realized the feed of wide band 4 circular polarization of satellite navigation frequency range.
2. feeding network according to claim 1 is characterized in that, described feeding network also comprises: 4 feed end points corresponding with antenna port form constant amplitude, 90 ° feed relation respectively.
3. feeding network according to claim 1 is characterized in that, whole feeding network is confined in the disc that diameter is no more than 180mm.
4. feeding network according to claim 3 is characterized in that, whole feeding network is closed in the antenna ground plate cylindrical cavity that inner height 4mm, a diameter is no more than Φ 180mm.
5. according to claim 1 or 2 or 4 described feeding networks; It is characterized in that 4 feed ends of the antenna that links to each other with an end of said feeding network pass ground plate and are connected with 4 via hole 4 feed end points corresponding with feeding network that metallize on the last dielectric-slab; The other end of said feeding network links to each other with receiver, links to each other with socket inner core on being installed in down ground plate through following dielectric-slab metallization via hole; Perhaps, the other end of said feeding network links to each other with the rf inputs of preamplifier or low noise amplifier and is formed with source antenna, and said feeding network output connects the output of said preamplifier or low noise amplifier.
6. according to claim 1 or 2 or 3 described feeding networks, it is characterized in that the phase place of 4 circular polarization feed end points of described feeding network is clockwise or is rotated counterclockwise, and forms the circular polarization feed of any rotation direction according to instructions for use.
7. feeding network according to claim 1 is characterized in that, described wideband phase shift device is the Xi Fumen Schiffman phase shifter of coupling line style, comprising: the broad-band phase shifter of 90 ° broad-band phase shifter and 180 °.
8. feeding network according to claim 1 is characterized in that, described power splitter comprises 3 bisection power splitters, and said 3 bisection power splitters and phase shifter series and parallel are formed feeding network.
9. according to claim 1 or 2 or 3 described feeding networks; It is characterized in that; Be closed in upper and lower medium plate three printed lines in the antenna ground plate chamber and pass king's font isolate conductive piece of upper and lower dielectric-slab in the base plate chamber centre, be fixed with one through securing member and antenna ground plate chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205346031U CN202564548U (en) | 2011-12-19 | 2011-12-19 | Four-point circular polarization feed network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205346031U CN202564548U (en) | 2011-12-19 | 2011-12-19 | Four-point circular polarization feed network |
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| CN202564548U true CN202564548U (en) | 2012-11-28 |
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| CN2011205346031U Expired - Lifetime CN202564548U (en) | 2011-12-19 | 2011-12-19 | Four-point circular polarization feed network |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094678A (en) * | 2012-12-31 | 2013-05-08 | 西安电子科技大学 | Active wide band miniaturized navigation antenna |
| CN104037497A (en) * | 2014-05-13 | 2014-09-10 | 安徽华东光电技术研究所 | Ku wave band transmitting-receiving common-caliber multilayer printed antenna |
| CN104241854A (en) * | 2013-06-05 | 2014-12-24 | 日立金属株式会社 | Antenna device |
| CN105703081A (en) * | 2016-01-13 | 2016-06-22 | 深圳华天信通科技有限公司 | Array antenna apparatus |
| CN106384885A (en) * | 2016-11-28 | 2017-02-08 | 中国电子科技集团公司第二十九研究所 | Four-leaf-clover-shaped broadband circular-polarized planar antenna |
| CN106450762A (en) * | 2016-10-19 | 2017-02-22 | 厦门致联科技有限公司 | Compact symmetrical feed network |
| CN113156375A (en) * | 2021-03-30 | 2021-07-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Passive phase modulation chip of millimeter wave phased array T/R assembly |
-
2011
- 2011-12-19 CN CN2011205346031U patent/CN202564548U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094678A (en) * | 2012-12-31 | 2013-05-08 | 西安电子科技大学 | Active wide band miniaturized navigation antenna |
| CN104241854A (en) * | 2013-06-05 | 2014-12-24 | 日立金属株式会社 | Antenna device |
| CN104241854B (en) * | 2013-06-05 | 2018-04-20 | 日立金属株式会社 | Antenna assembly |
| CN104037497A (en) * | 2014-05-13 | 2014-09-10 | 安徽华东光电技术研究所 | Ku wave band transmitting-receiving common-caliber multilayer printed antenna |
| CN104037497B (en) * | 2014-05-13 | 2016-08-17 | 安徽华东光电技术研究所 | Ku wave band transmitting-receiving common-caliber multilayer printed antenna |
| CN105703081A (en) * | 2016-01-13 | 2016-06-22 | 深圳华天信通科技有限公司 | Array antenna apparatus |
| CN106450762A (en) * | 2016-10-19 | 2017-02-22 | 厦门致联科技有限公司 | Compact symmetrical feed network |
| CN106450762B (en) * | 2016-10-19 | 2023-10-10 | 厦门致联科技有限公司 | Compact symmetrical feed network |
| CN106384885A (en) * | 2016-11-28 | 2017-02-08 | 中国电子科技集团公司第二十九研究所 | Four-leaf-clover-shaped broadband circular-polarized planar antenna |
| CN106384885B (en) * | 2016-11-28 | 2019-03-19 | 中国电子科技集团公司第二十九研究所 | A kind of bunge bedstraw herb shape broad band circular polarization plane antenna |
| CN113156375A (en) * | 2021-03-30 | 2021-07-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Passive phase modulation chip of millimeter wave phased array T/R assembly |
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Granted publication date: 20121128 |