CN201425968Y - Double frequency channel satellite navigation receiving antenna - Google Patents
Double frequency channel satellite navigation receiving antenna Download PDFInfo
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- CN201425968Y CN201425968Y CN2009200130245U CN200920013024U CN201425968Y CN 201425968 Y CN201425968 Y CN 201425968Y CN 2009200130245 U CN2009200130245 U CN 2009200130245U CN 200920013024 U CN200920013024 U CN 200920013024U CN 201425968 Y CN201425968 Y CN 201425968Y
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- receiving antenna
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Abstract
The utility model discloses a double frequency channel satellite navigation receiving antenna, comprising a laminated paster antenna, a broadband orthogonal feeder network and a connecting probe, wherein the structure of the laminated paster antenna comprises a capacitance board, an upper layer paster, a lower paster and ground; a medium baseplate is respectively arranged between the capacitance,the upper layer paster, the lower paster and the ground, and a compensation air layer is respectively arranged between the medium layer for fixing the capacitance board, the medium layer for fixing the upper layer paster and the medium for fixing the lower layer paster; and the broadband orthogonal feeder network consists of a Wilkinson power divider and a 90 degrees broadband phase shift and is fixed on the medium board under the ground. The antenna has the characteristics of low cost, wide antenna wave beam and high low-elevation gain and the like. The utility model is suitable for the application to the high-precision satellite positioning navigation and time service system.
Description
Technical field
The utility model relates to a kind of two-band receiving antenna of satellite navigation, refers in particular to the reception antenna that is applied in high accuracy satellite positioning navigation and the time dissemination system.
Background technology
China's " Big Dipper " NAVSTAR acted in earthquake relief work significantly in 2008, and satellite positioning navigation more and more is subjected to people's attention.Equally, the GALILEO in GPS of USA, Muscovite GLONASS and Europe is just used widely." Big Dipper " NAVSTAR of China's independent research also satisfied China extremely the surrounding area user demand of satellite positioning navigation and is planned progressively to expand in 2010 global positioning system.Modal automobile satellite positioning navigation instrument can only receive the L1 frequency range on the current market gps signal, positioning accuracy are low.In order to improve positioning accuracy, satellite positioning navigation terminal adopts L1/L2 double frequency or L1/L2/L5 three mode of operation frequently.But these terminals all are subjected to the restriction of the U.S., if some day, the U.S. did not provide GPS service to China, these terminals can't be used.For example, the paralysis incident once to occur be exactly because not time service of GPS System in USA to China's cdma network.Cover blank and the low problem of positioning accuracy for solving triangular web, following satellite positioning navigation will be that multi-mode is compatible and multisystem is integrated, and terminal antenna is as the important component part of NAVSTAR, and its performance quality will produce a very large impact the performance of whole Position Fixing Navigation System.
, be used widely owing to have little, in light weight, the low section of volume, low cost and advantage such as easy conformal because of paster antenna.But, more and more higher requirement has been proposed for the coverage of antenna along with the development of NAVSTAR.As " Big Dipper " navigation system and the GPS of USA system user machine antenna of China, and the air craft carried antenna of TT﹠C system, all require to have the covering power of approximate hemisphere, and will have higher low elevation gain.And the beamwidth of common paster antenna is generally about 70～110 degree, when the low elevation angle (elevation angle is 10 degree) gain-7～-3dBi between.So do not improve the low elevation gain of paster antenna, just can not fine paster antenna be applied to navigation terminal antenna, thereby satisfy the requirement of the two-band receiving antenna of satellite navigation.
Summary of the invention
The utility model is at the proposition of above problem, and develops a kind of GPS, GLONASS of can receiving, the two-band receiving antenna of satellite navigation of GALILEO and " Big Dipper " location navigation signal.The know-why that the utility model adopts is:
Adopt the lamination patch-antenna structure to realize two-band work.For the bandwidth that guarantees low-frequency range 75MHz adopts the capacitive coupling feeding classification.In order to improve the paster antenna low elevation gain, adopt the medium substrate of high-k.Above medium substrate is incumbent on the laminating sheet, can increases beamwidth and further improve low elevation gain.In order to realize that right-handed circular polarization (RHCP) receives, adopt the wideband orthogonal feeding network to lamination paster antenna feed, and feeding network is integrated into the antenna below, compact conformation is convenient to processing.
The real technical indicator that adopts is as follows:
Frequency range: 1164-1239MHz, 1559-1612MHz
Polarization mode: RHCP
VSWR：＜1.5∶1
Axial ratio :≤3dB
Antenna gain: 〉=0dBi (summit); 〉=-5dBi (the low elevation angle)
Antenna beam: orientation 0-360 °, elevation angle 5-90 °
Feeding classification: 50 ohm of SMA connectors.
The technological means that the utility model adopts is as follows:
A kind of two-band receiving antenna of satellite navigation is characterized in that comprising: lamination paster antenna, wideband orthogonal feeding network and linking probe;
The structure of described lamination paster antenna is followed successively by capacitor board, upper strata paster, lower floor's paster and ground from top to down, and between capacitor board, upper strata paster, lower floor's paster and ground, be respectively equipped with medium substrate, simultaneously the medium substrate of fixed capacity plate, fixedly the upper strata paster medium substrate and fixedly be provided with the make-up air layer between the medium substrate of lower floor's paster;
Described wideband orthogonal feeding network is made up of Wilkinson power splitter and 90 degree wideband phase shift devices and is fixed on below the ground on the medium substrate;
Described capacitor board is connected with wideband orthogonal feeding network input by linking probe, and is provided with the protection hole in the relevant position on upper strata paster, lower floor's paster and ground that linking probe passes through, and the internal diameter in protection hole is greater than the diameter of linking probe.
Described upper strata paster works in high band 1559-1610MHz by the capacitor board feed that is coupled, and is used to receive near the satellite positioning navigation signal the L1 frequency range; Described lower floor paster works in low-frequency range 1164-1239MHz by upper strata paster coupling feed, is used to receive L2 and near the satellite positioning navigation signal of L5 frequency range.
Medium substrate in the described lamination paster antenna adopts the medium substrate of dielectric constant 9～11.
Described upper strata paster is by the capacitor board feed that is coupled, and lower floor's paster also is used to compensate the inductance of being introduced by linking probe by upper strata paster coupling feed, has improved the impedance bandwidth of described lamination paster antenna.
Described linking probe length changes with the variation of described make-up air layer thickness, and wherein lamination paster antenna and wideband orthogonal feeding network are fixed together by fixed screw.
Described wideband orthogonal feeding network is integrated into described lamination paster antenna below.
Described 90 degree wideband phase shift devices comprise two paths, and path one is that one section characteristic impedance is 50 ohm, is the microstrip line of 270 degree with respect to centre frequency 1.4GHz electrical length; Path two is 62 ohm by characteristic impedance, with respect to the microstrip line of centre frequency 1.4GHz electrical length 180 degree; Wherein said path one and path two differ in the 1.1-1.7GHz frequency range between 90 ± 5 degree.
It is 75 ohm that open circuit/short circuit microstrip line in the described 90 degree wideband phase shift devices adopts characteristic impedance, and open circuit microstrip line electrical length is 24 degree, and short circuit microstrip line electrical length 59.5 degree are promptly with respect to centre frequency 1.4GHz.
Owing to adopted technique scheme, the two-band receiving antenna of satellite navigation that the utility model provides, by the low elevation gain of raising paster antenna, thereby satisfy various pattern satellite positioning navigation terminal antennas, the requirement of using in hi-Fix and the time dissemination system.And this antenna cost is lower, antenna beam width and low elevation gain height, has the good characteristics of circular polarization performance again, is very suitable for the application in high accuracy satellite positioning navigation and the time dissemination system.
Description of drawings
Fig. 1 is the stereogram of the utility model two-band receiving antenna of satellite navigation;
Fig. 2 is the topology view of lamination paster antenna;
Fig. 3 is the topology view of wideband orthogonal feeding network;
Fig. 4 is the schematic diagram of wideband orthogonal feeding network;
Fig. 5 is the reflection coefficient (S of the utility model two-band receiving antenna of satellite navigation
11) figure;
Fig. 6 is that the utility model two-band receiving antenna of satellite navigation is at the radiation mode figure of 1.207GHz place;
Fig. 7 is that the utility model two-band receiving antenna of satellite navigation is at the radiation mode figure of 1.575GHz place.
Embodiment
As Fig. 1～shown in Figure 4, the utility model two-band receiving antenna of satellite navigation comprises lamination paster antenna 2, wideband orthogonal feeding network 3 and linking probe 4; Lamination paster antenna 2 comprise capacitor board 21, upper strata paster 22, lower floor's paster 23,24, medium substrate 25, make-up air layer 26 and protection hole 27 (as shown in Figure 2); Upper strata paster 22 works in high band (1559-1610MHz) by capacitor board 21 coupling feeds, is used to receive near the satellite positioning navigation signal of L1 frequency range; Lower floor's paster 23 works in low-frequency range (1164-1239MHz) by upper strata paster 22 coupling feeds, is used to receive L2 and near the satellite positioning navigation signal of L5 frequency range.Constitute coupling capacitance between capacitor board 21 and the upper strata paster 22, upper strata paster 22 and next paster 23 also constitute coupling capacitance, and these two coupling capacitances have compensated the inductance of being introduced by linking probe, thereby have improved the impedance bandwidth of lamination paster antenna 2.Wherein medium substrate adopts the substrate (present embodiment employing dielectric constant is 10.2 medium substrate) of high-k, and the medium substrate of the laminating sheet that is incumbent on can increase antenna beamwidth and improve the antenna low elevation gain.Capacitor board is connected with wideband orthogonal feeding network input by linking probe.Because the thickness of medium substrate 25 and dielectric constant are normally uneven, adopt make-up air layer 26 to carry out tuning and compensation; Change the thickness of make-up air layer 26 during debugging, when the input vswr of the two-band receiving antenna of satellite navigation in 1164-1239MHz and 1559-1612MHz frequency range simultaneously less than 1.5 the time, illustrate that make-up air layer 26 thickness are suitable, determine described make-up air layer thickness and linking probe length, be fixed together with four key screw lamination paster antennas and wideband orthogonal feeding network at last.For fear of upper strata paster 22, lower floor's paster 23,24 and linking probe 4 short circuits; in overprotection hole, relevant position 26; could constitute coupling capacitance between capacitor board 21 and the upper strata paster 22 like this, upper strata paster 22 and next paster 23 also could constitute coupling capacitance simultaneously.Wideband orthogonal feeding network 3 comprises Wilkinson power splitter 31 and 90 degree wideband phase shift devices 32 as shown in Figure 3 and Figure 4.90 degree wideband phase shift devices 32 comprise two paths, and path 321 is that one section characteristic impedance is Z4 (50 ohm), and length is 3 λ
gThe microstrip line 3211 of/4 (are 270 degree with respect to centre frequency 1.4GHz electrical length); Path 322 is Z3 (62 ohm) by characteristic impedance, and length is λ
gThe microstrip line 3221 of (with respect to centre frequency 1.4GHz electrical length 180 degree) and a pair of open circuit microstrip line 3222 and short circuit microstrip line 3223 lines of its both sides are formed.The characteristic impedance of open circuit microstrip line 3222 is Z
2(75 ohm), electrical length are 24 degree (with respect to centre frequency 1.4GHz).The characteristic impedance of short circuit microstrip line 3223 is Z
2(75 ohm), electrical length are 59.5 degree (with respect to centre frequency 1.4GHz).The characteristic impedance of the open circuit/short circuit microstrip line in the 90 degree wideband phase shift devices 31 in the past is very big, and corresponding live width is very little, is unfavorable for processing.Therefore, we develop the characteristic impedance that has reduced open circuit/short circuit microstrip line, are beneficial to processing, but in order to reach same performance, being uneven in length of open circuit and short circuit microstrip line, and the length of open circuit/short circuit microstrip line changes with characteristic impedance.The wideband orthogonal feeding network 3 that the utility model proposes, owing to adopted the 90 degree wideband phase shift devices 31 that we proposed, at 1.1-1.7GHz frequency range inner port 2 and port 3, amplitude difference is 90 ± 5 degree less than 0.3dB, phase shift difference, thereby has improved the circular polarization performance of the described two-band receiving antenna of satellite navigation.
See also Fig. 5, the reflection coefficient (S of the utility model two-band receiving antenna of satellite navigation
11) between working frequency range 1164-1239MHz and 1559-1612MHz all less than-14dB (with respect to voltage standing wave ratio 1.5), illustrate that the utility model two-band receiving antenna of satellite navigation input coupling is good.Fig. 6 and Fig. 7 are respectively the radiation mode figure of the utility model two-band receiving antenna of satellite navigation at operating frequency 1.207GHz and 1.575GHz.By test result as can be known, this antenna has the advantages that wave beam is wide, the circular polarization performance is good and low elevation gain is high, is very suitable for the application in high accuracy satellite positioning navigation and the time dissemination system.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection range of the present utility model.
Claims (8)
1, a kind of two-band receiving antenna of satellite navigation is characterized in that comprising: lamination paster antenna, wideband orthogonal feeding network and linking probe;
The structure of described lamination paster antenna is followed successively by capacitor board, upper strata paster, lower floor's paster and ground from top to down, and between capacitor board, upper strata paster, lower floor's paster and ground, be respectively equipped with medium substrate, simultaneously the medium substrate of fixed capacity plate, fixedly the upper strata paster medium substrate and fixedly be provided with the make-up air layer between the medium substrate of lower floor's paster;
Described wideband orthogonal feeding network is made up of Wilkinson power splitter and 90 degree wideband phase shift devices and is fixed on below the ground on the medium substrate;
Described capacitor board is connected with wideband orthogonal feeding network input by linking probe, and is provided with the protection hole in the relevant position on upper strata paster, lower floor's paster and ground that linking probe passes through, and the internal diameter in protection hole is greater than the diameter of linking probe.
2, a kind of two-band receiving antenna of satellite navigation according to claim 1 is characterized in that described upper strata paster by the capacitor board feed that is coupled, works in high band 1559-1610MHz, is used to receive near the satellite positioning navigation signal the L1 frequency range; Described lower floor paster works in low-frequency range 1164-1239MHz by upper strata paster coupling feed, is used to receive L2 and near the satellite positioning navigation signal of L5 frequency range.
3, a kind of two-band receiving antenna of satellite navigation according to claim 1 is characterized in that medium substrate in the described lamination paster antenna adopts the medium substrate of dielectric constant 9～11.
4, according to a kind of two-band receiving antenna of satellite navigation shown in claim 1 or 2, it is characterized in that described upper strata paster is by the capacitor board feed that is coupled, lower floor's paster is by upper strata paster coupling feed, also be used to compensate the inductance of introducing by linking probe, improved the impedance bandwidth of described lamination paster antenna.
5, a kind of two-band receiving antenna of satellite navigation according to claim 1, it is characterized in that described linking probe length changes with the variation of described make-up air layer thickness, wherein lamination paster antenna and wideband orthogonal feeding network are fixed together by fixed screw.
6, a kind of two-band receiving antenna of satellite navigation according to claim 1 is characterized in that described wideband orthogonal feeding network is integrated into described lamination paster antenna below.
7, a kind of two-band receiving antenna of satellite navigation according to claim 6, it is characterized in that described 90 degree wideband phase shift devices comprise two paths, path one is that one section characteristic impedance is 50 ohm, is the microstrip line of 270 degree with respect to centre frequency 1.4GHz electrical length; Path two is 62 ohm by characteristic impedance, with respect to the microstrip line of centre frequency 1.4GHz electrical length 180 degree; Wherein said path one and path two differ in the 1.1-1.7GHz frequency range between 90 ± 5 degree.
8, a kind of two-band receiving antenna of satellite navigation according to claim 6, it is characterized in that the open circuit/short circuit microstrip line employing characteristic impedance in the described 90 degree wideband phase shift devices is 75 ohm, with respect to centre frequency 1.4GHz, open circuit microstrip line electrical length is 24 degree, short circuit microstrip line electrical length 59.5 degree, and the length of described open circuit/short circuit microstrip line changes with characteristic impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200130245U CN201425968Y (en) | 2009-04-15 | 2009-04-15 | Double frequency channel satellite navigation receiving antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200130245U CN201425968Y (en) | 2009-04-15 | 2009-04-15 | Double frequency channel satellite navigation receiving antenna |
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| CN201425968Y true CN201425968Y (en) | 2010-03-17 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976754A (en) * | 2010-10-29 | 2011-02-16 | 华南理工大学 | Tri-band Wilkinson power distributor |
| CN102570039A (en) * | 2010-12-15 | 2012-07-11 | 上海安费诺永亿通讯电子有限公司 | Dielectric coupled feeding antenna and dielectric coupled feeding device |
| CN102931479A (en) * | 2012-11-02 | 2013-02-13 | 大连海事大学 | Compact type plane dual-band omnidirectional circularly polarized antenna |
| CN103219588A (en) * | 2012-12-19 | 2013-07-24 | 武汉基数星通信科技有限公司 | Double-frequency navigation antenna with high isolation |
| WO2014176868A1 (en) * | 2013-05-02 | 2014-11-06 | 深圳市华信天线技术有限公司 | Combined antenna and handheld antenna device |
| CN104538730A (en) * | 2014-08-15 | 2015-04-22 | 深圳市天鼎微波科技有限公司 | Multi-mode satellite navigation antenna capable of reducing backward radiation influence of supply network |
| CN104953252A (en) * | 2015-07-01 | 2015-09-30 | 成都众易通科技有限公司 | Wide-angle scanning phased array antenna unit |
| CN104953282A (en) * | 2015-07-01 | 2015-09-30 | 成都众易通科技有限公司 | Wide-angle scanning phased array antenna system |
| CN107768817A (en) * | 2017-10-25 | 2018-03-06 | 四川莱源科技有限公司 | A kind of Anneta module simulation model |
| CN114171914A (en) * | 2022-02-11 | 2022-03-11 | 河北晶禾电子技术股份有限公司 | Beidou antenna |
| CN117353047A (en) * | 2023-10-10 | 2024-01-05 | 广州程星通信科技有限公司 | Broadband wide-angle scanning phased array antenna unit and array thereof |
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2009
- 2009-04-15 CN CN2009200130245U patent/CN201425968Y/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976754B (en) * | 2010-10-29 | 2013-11-13 | 华南理工大学 | Tri-band Wilkinson power distributor |
| CN101976754A (en) * | 2010-10-29 | 2011-02-16 | 华南理工大学 | Tri-band Wilkinson power distributor |
| CN102570039A (en) * | 2010-12-15 | 2012-07-11 | 上海安费诺永亿通讯电子有限公司 | Dielectric coupled feeding antenna and dielectric coupled feeding device |
| CN102931479A (en) * | 2012-11-02 | 2013-02-13 | 大连海事大学 | Compact type plane dual-band omnidirectional circularly polarized antenna |
| CN102931479B (en) * | 2012-11-02 | 2014-12-31 | 大连海事大学 | Compact type plane dual-band omnidirectional circularly polarized antenna |
| CN103219588B (en) * | 2012-12-19 | 2018-01-09 | 武汉基数星通信科技有限公司 | A kind of double-frequency navigation antenna with high isolation |
| CN103219588A (en) * | 2012-12-19 | 2013-07-24 | 武汉基数星通信科技有限公司 | Double-frequency navigation antenna with high isolation |
| WO2014176868A1 (en) * | 2013-05-02 | 2014-11-06 | 深圳市华信天线技术有限公司 | Combined antenna and handheld antenna device |
| CN104538730B (en) * | 2014-08-15 | 2018-10-09 | 深圳市天鼎微波科技有限公司 | Reduce the multi-mode antenna for satellite navigation that the backward radiation of feeding network influences |
| CN104538730A (en) * | 2014-08-15 | 2015-04-22 | 深圳市天鼎微波科技有限公司 | Multi-mode satellite navigation antenna capable of reducing backward radiation influence of supply network |
| CN104953282A (en) * | 2015-07-01 | 2015-09-30 | 成都众易通科技有限公司 | Wide-angle scanning phased array antenna system |
| CN104953252A (en) * | 2015-07-01 | 2015-09-30 | 成都众易通科技有限公司 | Wide-angle scanning phased array antenna unit |
| CN107768817A (en) * | 2017-10-25 | 2018-03-06 | 四川莱源科技有限公司 | A kind of Anneta module simulation model |
| CN114171914A (en) * | 2022-02-11 | 2022-03-11 | 河北晶禾电子技术股份有限公司 | Beidou antenna |
| CN114171914B (en) * | 2022-02-11 | 2022-05-24 | 河北晶禾电子技术股份有限公司 | Beidou antenna |
| CN117353047A (en) * | 2023-10-10 | 2024-01-05 | 广州程星通信科技有限公司 | Broadband wide-angle scanning phased array antenna unit and array thereof |
| CN117353047B (en) * | 2023-10-10 | 2024-05-17 | 广州程星通信科技有限公司 | Broadband wide-angle scanning phased array antenna unit and array thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100317 Termination date: 20110415 |