CN204179238U - A kind of broad-band antenna being applicable to precision approach reference receiver - Google Patents
A kind of broad-band antenna being applicable to precision approach reference receiver Download PDFInfo
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- CN204179238U CN204179238U CN201420711549.7U CN201420711549U CN204179238U CN 204179238 U CN204179238 U CN 204179238U CN 201420711549 U CN201420711549 U CN 201420711549U CN 204179238 U CN204179238 U CN 204179238U
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Abstract
The utility model discloses a kind of broad-band antenna being applicable to precision approach reference receiver, be made up of four arm spiral laminated antennas of cascade, feeding network and low noise amplifier circuit.Four arm spiral laminated antennas comprise the upper strata four-arm spiral antenna receiving the satellite-signal of different frequency range respectively and lower floor's four-arm spiral antenna of stacked placement.It achieve can receive GPS L1 and L2C frequency range, B1 and the B2 frequency range of the Big Dipper, GALILEO E1 and E5 frequency band signals receive, antenna gain evenly and have high phase center, is conducive to realizing the multisystem needed for aircraft precision approach, multifrequency point, integrity process.
Description
Technical field
The utility model relates to a kind of satellite navigation reinforcing system receiver broad-band antenna, and especially a kind of broad-band antenna being applicable to precision approach reference receiver belongs to satellite navigation aerospace applications technical field.
Background technology
Satellite navigation becomes a kind of important technology approach of aviation aircraft location, can be applicable to Route reform and precision approach.For meeting precision and the integrity requirement in aircraft accurate stage, need to introduce ground and strengthen system, it is made up of multiple stage reference receiver and integrity process information facility.
For strengthening the availability of satellite navigation system, continuity and integrity further, the enhancing system of multisystem multifrequency point is development trend.Reference receiver wherein needs the multiple frequency signals receiving the multiple satellite navigation system of process.
Reference receiver is in order to monitor satellite navigation signal Strength Changes, and wish that antenna gain is even, common satellite navigation aerial does not possess this feature.
Lopez, A.R etc. are at GPS landing system reference antenna, IEEE, Volume:52, ISSE:1, uses 21 array elements to form 1 road signal in 2010, Page:104-113, the antenna pattern gain formed is even, but only receive L1, L2 and L5 frequency of GPS, and its antenna is in " bar " shape, adds Module of aerial, overall dimensions has certain altitude, needs the limit for height requirement considering airport during installation.
Current technical scheme, mainly for gps system, does not comprise other satellite navigation system.
The utility model is according to four-arm spiral antenna feature, devise the broadband active antenna of the precision approach reference receiver of multisystem multifrequency point, by the antenna pattern selecting suitable physical size to form uniform gain, to meet precision approach reference receiver high-performance treatments demand, and antenna size is little.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of broadband active antenna being applicable to precision approach reference receiver, and gain has uniform properties.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
Be applicable to a broadband active antenna for precision approach reference receiver, be made up of four arm spiral laminated antennas of cascade, feeding network and low noise amplifier circuit; Described four arm spiral laminated antennas comprise upper strata four-arm spiral antenna and lower floor's four-arm spiral antenna of stacked placement; Described upper strata four-arm spiral antenna and lower floor's four-arm spiral antenna receive the satellite-signal of different frequency range respectively.
Described upper strata four-arm spiral antenna and lower floor four-arm spiral antenna, by the consistent spiral conducting line of four length, equidistantly enclose axis coiling and form.Described upper strata four-arm spiral antenna receives the satellite-signal of 1.5G frequency range, and described lower floor four-arm spiral antenna receives the satellite-signal of 1.2G frequency range.
The lead angle of described upper strata four-arm spiral antenna is 45 °, and antenna diameter is 25mm; Its lead angle of described lower floor four-arm spiral antenna is 65 °, and the width of spiral arm is 2mm, and antenna diameter is 35mm.
Described feeding network is electric bridge feeding network.
Described electric bridge feeding network comprises electric bridge chip N1-N6; 3 pin of described electric bridge chip N1, N3 and 4 pin connect the feed port of each spiral conducting line of layer four-arm spiral antenna respectively; 3 pin of described electric bridge chip N5, N7 and 4 pin connect the feed port of each spiral conducting line of lower floor's four-arm spiral antenna respectively; 3 pin of described electric bridge chip N2 and 4 pin connect 1 pin of described electric bridge chip N1 and N3 respectively, and its 1 pin is as the first output of described electric bridge feeding network; 3 pin of described electric bridge chip N6 and 4 pin connect 1 pin of described electric bridge chip N5 and N7 respectively, and its 1 pin is as the second output of described electric bridge feeding network.
Described low noise amplifier circuit is made up of low noise amplifier A1-A3, band pass filter Z1-Z2, mixer N4, resistance R1-R6, electric capacity C1-C4, inductance L 1; The input of described low noise amplifier A1 and A2 connects the first output and second output of described electric bridge feeding network respectively, and its output connects 1 pin of described band pass filter Z1 and Z2 respectively; Described resistance R1-R3 is end to end, and the node between resistance R1 and R2 connects 2 pin of described band pass filter Z1, and the node between resistance R1 and R3 connects 3 pin of mixer N4, the node ground connection between resistance R2 and R3; Described resistance R4-R6 is end to end, and the node between resistance R4 and R5 connects 2 pin of described band pass filter Z2, and the node between resistance R4 and R6 connects 4 pin of mixer N4, the node ground connection between resistance R5 and R6; The 1 foot meridian capacitor C3 of described low noise amplifier A3 connects 6 pin of mixer N4, and its 6 pin connects+3.3V power supply through inductance L 1, and its 4 pin meets electric capacity C4; The other end of electric capacity C4 is as the output of described low noise amplifier circuit.
The beneficial effect adopting technique scheme to produce is:
1, the utility model adopts the Wide-Band Design, achieves the array received of L1 and the L2C frequency range of GPS, B1 and the B2 frequency range of the Big Dipper, E1 and the E5 frequency band signals of GALILEO, has broadband feature, meet the multimode multi-frequency point demand of reference receiver; Signal syntheses 1 tunnel, every road exports, and is convenient to connect use.
2, antenna gain of the present utility model has uniform properties, is conducive to realizing the multisystem needed for aircraft precision approach, multifrequency point, integrity process.Antenna has high stability phase center.
3, the utility model antenna has desirable hemispherical radiation properties, is convenient to form higher gain at low elevation angle place.Meet the integrity monitoring demand to low elevation angle satellite in satellite navigation aviation enhancing application.
4, two frequency band signals of the present utility model amplify filtering more respectively, ensure that and are not subject to being with outer interference signal to affect, and have good channels selectivity.
5, the utility model is conducive to reducing equipment volume and power consumption, is convenient to high-acruracy survey.
Accompanying drawing illustrates:
Fig. 1 is the theory diagram of the utility model four arm spiral laminated bay;
Fig. 2 is the structure chart of the utility model four arm spiral laminated bay;
Fig. 3 is the circuit theory diagrams of the utility model feed networking and low noise amplifier.
1: upper strata four-arm spiral antenna, 2: copper bar, 3: lower floor's four-arm spiral antenna, 4: base
Embodiment
As shown in Figure 1, be applicable to the four arm spiral laminated antennas of broad-band antenna by cascade of precision approach reference receiver, feeding network and low noise amplifier circuit described in form.Described four arm spiral laminated antennas comprise upper strata four-arm spiral antenna and lower floor's four-arm spiral antenna of stacked placement; Described upper strata four-arm spiral antenna and lower floor's four-arm spiral antenna receive the satellite-signal of different frequency range respectively.
As shown in Figure 2, described upper strata four-arm spiral antenna and lower floor four-arm spiral antenna, by the consistent spiral conducting line of four length, equidistantly enclose axis coiling and form.Described upper strata four-arm spiral antenna and lower floor four-arm spiral antenna, by the consistent spiral conducting line of four length, equidistantly enclose axis coiling and form.Described upper strata four-arm spiral antenna receives the satellite-signal of 1.5G frequency range, and described lower floor four-arm spiral antenna receives the satellite-signal of 1.2G frequency range.
For ensureing broad beam, the gain uniform properties of precision approach system reference antenna, the antenna with side radiation direction characteristic of antenna is made key design.Wavelength corresponding to helical antenna resonance frequency is determined by antenna diameter and lead angle:
λ＝πd(1+cosα)/sinα
According to this design formula, be optimized design to antenna, optimization Simulation result is:
Upper strata four-arm spiral antenna receives the satellite-signal of 1.5G frequency range, and its lead angle is 45 °, and diameter is 25mm; Lower floor's four-arm spiral antenna receives the satellite-signal of 1.2G frequency range, and its lead angle is 65 °, and the width of spiral arm is 2mm, and diameter is 35mm.
Described feeding network is electric bridge feeding network.
As shown in Figure 3, described electric bridge feeding network comprises electric bridge chip N1-N6; 3 pin of described electric bridge chip N1, N3 and 4 pin connect the feed port of each spiral conducting line of layer four-arm spiral antenna respectively; 3 pin of described electric bridge chip N5, N7 and 4 pin connect the feed port of each spiral conducting line of lower floor's four-arm spiral antenna respectively; 3 pin of described electric bridge chip N2 and 4 pin connect 1 pin of described electric bridge chip N1 and N3 respectively, and its 1 pin is as the first output of described electric bridge feeding network; 3 pin of described electric bridge chip N6 and 4 pin connect 1 pin of described electric bridge chip N5 and N7 respectively, and its 1 pin is as the second output of described electric bridge feeding network.
As shown in Figure 3, described low noise amplifier circuit is made up of low noise amplifier A1-A3, band pass filter Z1-Z2, mixer N4, resistance R1-R6, electric capacity C1-C4, inductance L 1; The input of described low noise amplifier A1 and A2 connects the first output and second output of described electric bridge feeding network respectively, and its output connects 1 pin of described band pass filter Z1 and Z2 respectively; Described resistance R1-R3 is end to end, and the node between resistance R1 and R2 connects 2 pin of described band pass filter Z1, and the node between resistance R1 and R3 connects 3 pin of mixer N4, the node ground connection between resistance R2 and R3; Described resistance R4-R6 is end to end, and the node between resistance R4 and R5 connects 2 pin of described band pass filter Z2, and the node between resistance R4 and R6 connects 4 pin of mixer N4, the node ground connection between resistance R5 and R6; The 1 foot meridian capacitor C3 of described low noise amplifier A3 connects 6 pin of mixer N4, and its 6 pin connects+3.3V power supply through inductance L 1, and its 4 pin meets electric capacity C4; The other end of electric capacity C4 is as the output of described low noise amplifier circuit.
According to the frequency point setting of L1 and the L2C frequency range of GPS, B1 and the B2 frequency range of the Big Dipper, E1 and the E5 frequency band signals of GALILEO, the two frequency bins of each system, belong to two frequency ranges respectively: L1, B1, E1 signal belongs to 1.5GHz frequency range, L2C, B2, E5 signal belongs to 1.2GHz frequency range.
Four arm spiral laminated antennas adopt and two four-arm spiral antennas are carried out lamination placement form, and upper strata helical antenna is operated in 1.5GHz frequency range, and lower floor's helical antenna is operated in 1.2GHz frequency range.Four spiral arm current amplitudes of upper strata helical antenna are equal, and adopt electric bridge feed, the phase difference between 4 ports is followed successively by 0 °, 90 °, 180 °, 270 ° modes and carries out feed.Four spiral arm current amplitudes of lower floor's helical antenna are equal, and adopt electric bridge feed, the phase difference between 4 ports is followed successively by 0 °, 90 °, 180 °, 270 ° modes and carries out feed.
Upper strata helical antenna adopts flexible PCB structure, is bent, and is formed in one with antenna radiating element printing.Plane P CB structural design is adopted bottom lower floor's helical antenna.
The feeder cable of upper strata helical antenna is from being highly 69mm, and diameter is that the copper pipe inside of 10mm is passed, upper strata helical antenna and lower floor helical antenna distance 51mm.
Feed networking adopts the XC1400P-03S of Anaren company, and its imbalance of amplitude and phase degree is 0.3dB/4 °, has good width and to balance each other characteristic, and ensure that axial ratio and the Phase center stability of antenna excellence.
Low noise amplifier prime adopts the ultra-low noise device WHM14-3020LE of WANTCOM company, and the satellite navigation signals of 1.5GHz frequency range and 1.2GHz frequency range leaches by band pass filter CMF44C1575C32B and NBF4565C1166C98A respectively.
Resistance R1, R2, R3 and R4, R5, R6 form two inter-stage matching networks, ensure that the port of band pass filter has less voltage standing wave ratio, thus the amplitude-frequency characteristic making band pass filter good is not by the impact of rear end.
Two frequency band signals are closed road by the SBTC-2-25 of application MINI-CIRCUITS, and carry out low noise amplification afterwards, the noise factor that whole amplitude limit field is put is less than 0.8dB, and gain is 40dB.
The design that two frequency band signals amplify filtering more respectively ensure that and is not subject to being with outer interference signal to affect, and has good channels selectivity.
Claims (6)
1. four arm spiral broad-band antennas of satellite navigation multisystem multifrequency point, is characterized in that: be made up of four arm spiral laminated antennas of cascade, feeding network and low noise amplifier circuit; Described four arm spiral laminated antennas comprise upper strata four-arm spiral antenna and lower floor's four-arm spiral antenna of stacked placement; Described upper strata four-arm spiral antenna and lower floor's four-arm spiral antenna receive the satellite-signal of different frequency range respectively.
2. four arm spiral broad-band antennas of a satellite navigation multisystem multifrequency point according to claim 1, it is characterized in that: described upper strata four-arm spiral antenna and lower floor four-arm spiral antenna, by the consistent spiral conducting line of four length, equidistantly enclose axis coiling and form; Described upper strata four-arm spiral antenna receives the satellite-signal of 1.5G frequency range; Described lower floor four-arm spiral antenna receives the satellite-signal of 1.2G frequency range.
3. four arm spiral broad-band antennas of a satellite navigation multisystem multifrequency point according to claim 2, it is characterized in that: the lead angle of described upper strata four-arm spiral antenna is 45 °, diameter is 25mm, the lead angle of described lower floor four-arm spiral antenna is 65 °, the width of spiral arm is 2mm, and diameter is 35mm.
4., according to four arm spiral broad-band antennas of described satellite navigation multisystem multifrequency point arbitrary in claim 1, it is characterized in that: described feeding network is electric bridge feeding network.
5. four arm spiral broad-band antennas of satellite navigation multisystem multifrequency point according to claim 4, is characterized in that: described electric bridge feeding network comprises electric bridge chip N1-N6; 3 pin of described electric bridge chip N1, N3 and 4 pin connect the feed port of each spiral conducting line of layer four-arm spiral antenna respectively; 3 pin of described electric bridge chip N5, N7 and 4 pin connect the feed port of each spiral conducting line of lower floor's four-arm spiral antenna respectively; 3 pin of described electric bridge chip N2 and 4 pin connect 1 pin of described electric bridge chip N1 and N3 respectively, and its 1 pin is as the first output of described electric bridge feeding network; 3 pin of described electric bridge chip N6 and 4 pin connect 1 pin of described electric bridge chip N5 and N7 respectively, and its 1 pin is as the second output of described electric bridge feeding network.
6. four arm spiral broad-band antennas of the arbitrary satellite navigation multisystem multifrequency point according to claim 1-5, is characterized in that: described low noise amplifier circuit is made up of low noise amplifier A1-A3, band pass filter Z1-Z2, mixer N4, resistance R1-R6, electric capacity C1-C4, inductance L 1; The input of described low noise amplifier A1 and A2 connects the first output and second output of described electric bridge feeding network respectively, and its output connects 1 pin of described band pass filter Z1 and Z2 respectively; Described resistance R1-R3 is end to end, and the node between resistance R1 and R2 connects 2 pin of described band pass filter Z1, and the node between resistance R1 and R3 connects 3 pin of mixer N4, the node ground connection between resistance R2 and R3; Described resistance R4-R6 is end to end, and the node between resistance R4 and R5 connects 2 pin of described band pass filter Z2, and the node between resistance R4 and R6 connects 4 pin of mixer N4, the node ground connection between resistance R5 and R6; The 1 foot meridian capacitor C3 of described low noise amplifier A3 connects 6 pin of mixer N4, and its 6 pin connects+3.3V power supply through inductance L 1, and its 4 pin meets electric capacity C4; The other end of electric capacity C4 is as the output of described low noise amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420711549.7U CN204179238U (en) | 2014-11-24 | 2014-11-24 | A kind of broad-band antenna being applicable to precision approach reference receiver |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420711549.7U CN204179238U (en) | 2014-11-24 | 2014-11-24 | A kind of broad-band antenna being applicable to precision approach reference receiver |
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| CN204179238U true CN204179238U (en) | 2015-02-25 |
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| CN201420711549.7U Withdrawn - After Issue CN204179238U (en) | 2014-11-24 | 2014-11-24 | A kind of broad-band antenna being applicable to precision approach reference receiver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393425A (en) * | 2014-11-24 | 2015-03-04 | 中国电子科技集团公司第五十四研究所 | Satellite navigation multisystem multi-frequency-point quadrifilar helix wide-band antenna |
| CN109752732A (en) * | 2019-01-17 | 2019-05-14 | 上海华测导航技术股份有限公司 | A kind of circuit structure that GNSS height navigation frequency band is handled respectively |
-
2014
- 2014-11-24 CN CN201420711549.7U patent/CN204179238U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393425A (en) * | 2014-11-24 | 2015-03-04 | 中国电子科技集团公司第五十四研究所 | Satellite navigation multisystem multi-frequency-point quadrifilar helix wide-band antenna |
| CN104393425B (en) * | 2014-11-24 | 2017-11-14 | 中国电子科技集团公司第五十四研究所 | Four arm spiral broad-band antennas of satellite navigation multisystem multifrequency point |
| CN109752732A (en) * | 2019-01-17 | 2019-05-14 | 上海华测导航技术股份有限公司 | A kind of circuit structure that GNSS height navigation frequency band is handled respectively |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150225 Effective date of abandoning: 20171114 |
|
| AV01 | Patent right actively abandoned |