CN202182944U - Compatible reception module for satellite navigation - Google Patents
Compatible reception module for satellite navigation Download PDFInfo
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- CN202182944U CN202182944U CN2011202950528U CN201120295052U CN202182944U CN 202182944 U CN202182944 U CN 202182944U CN 2011202950528 U CN2011202950528 U CN 2011202950528U CN 201120295052 U CN201120295052 U CN 201120295052U CN 202182944 U CN202182944 U CN 202182944U
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Abstract
The utility model discloses a compatible reception module for satellite navigation. The compatible reception module for satellite navigation comprises a first channel for receiving signals of a BeiDou satellite B3 frequency range, and a second channel for receiving signals of a BeiDou satellite B1 frequency range\a GPS satellite L1 frequency range. In the second channel, a phase-locked loop circuit is commonly used by the GPS satellite L1 frequency range and the BeiDou satellite B1 frequency range. Switching between two paths of local oscillators is realized through the level control of the local oscillators. The compatible reception module for satellite navigation enables frequency conversion of reception signals to be processed through a single frequency conversion method, allows the two systems of the BeiDou and the GPS to be compatible, and has the advantages of small voltage, low power consumption, high integration, high signal-to-noise ratio or the like.
Description
Technical field
The utility model relates to a kind of satellite navigation positioning and directing receiver module, especially a kind of satellite navigation compatible type receiver module.
Background technology
Beidou satellite navigation system is the novel satellite navigation system that China develops voluntarily and sets up; Along with succeeding in sending up of the 6th Big Dipper two generations Navsat of China; China's Beidou satellite navigation networking construction has stepped essential step again forward; Be about to get into the next quickly networking stage, and then established the general layout of GPS four-footed tripartite confrontation.
China is clear and definite at present for the important industry field that relates to national economy, public safety, must progressively carry out the transition to the service system that adopts compatible other satellite navigation systems of Beidou satellite navigation; This is owing to consider that from the factor of safety the supportability of multisystem is stronger.
In civilian commercial kitchen area; Because the dipper system signal will can be covering the whole world at the year two thousand twenty; Dipper system could provide the most stable, service efficiently for civilian consumer terminal market, if the Big Dipper two generations chip therefore before this can compatible with GPS, will be accepted by market more easily.In addition,, can consider to open general marketplace, so compatible with GPS becomes the megatrend in the Big Dipper two generations project research and development of products and the design by channel and the pattern of GPS owing to receive GPS low price, high-performance and huge user group's influence.
The utility model content
The technical matters that the utility model will solve provide a kind of can compatible receive big-dipper satellite B3, B1 frequency range and/the compatible receiver module of satellite navigation of gps satellite L1 frequency band signals.
For solving the problems of the technologies described above, the technical scheme that the utility model is taked is:
A kind of satellite navigation compatible type receiver module is characterized in that said module comprises first passage that receives big-dipper satellite B3 frequency band signals and the second channel that receives big-dipper satellite B1 frequency range/gps satellite L1 frequency band signals; The shared phase-locked loop circuit of gps satellite L1 frequency range and big-dipper satellite B1 frequency range in the said second channel is through realizing the switching of two-way local oscillator to the level control of local oscillator.
Said first passage and second channel adopt the method for single-conversion to carry out frequency-conversion processing to received signal.
Said first passage comprises LNA-B3 LNA unit, radiofrequency signal F1 amplifying circuit, radio frequency band filter BPF1, the multiplier that is used for the first passage mixing, phase-locked loop circuit PLL1,10M temperature compensating crystal oscillator unit if bandpas filter BPF2 and the intermediate-freuqncy signal F6 amplifying circuit of cascade successively; Said second channel comprises LNA-LB LNA unit, radiofrequency signal F2 amplifying circuit, radio frequency band filter BPF3, the multiplier that is used for the second channel mixing, phase-locked loop circuit PLL2, said 10M temperature compensating crystal oscillator unit, if bandpas filter BPF4 and the intermediate-freuqncy signal F7 amplifying circuit of cascade successively, and Big Dipper B1 or the gps signal that receives carried out single-conversion output intermediate-freuqncy signal; The output terminal of said 10M temperature compensating crystal oscillator unit connects the input end of said phase-locked loop circuit PLL1 and phase-locked loop circuit PLL2 respectively, and frequency signal F3 that said phase-locked loop circuit PLL1 and phase-locked loop circuit PLL2 are synthetic and F4 insert the said multiplier and the multiplier that is used for the second channel mixing that is used for the first passage mixing respectively.
Another road output terminal output 62MHz clock signal F5 of said phase-locked loop circuit PLL1.
Said radiofrequency signal F1 amplifying circuit; Radio frequency band filter BPF1; The multiplier that is used for the first passage mixing; Phase-locked loop circuit PLL1; 10M temperature compensating crystal oscillator unit if bandpas filter BPF2; Intermediate-freuqncy signal F6 amplifying circuit; LNA-LB LNA unit; Radiofrequency signal F2 amplifying circuit; Radio frequency band filter BPF3; The multiplier that is used for the second channel mixing; Phase-locked loop circuit PLL2; 10M temperature compensating crystal oscillator unit; If bandpas filter BPF4 and intermediate-freuqncy signal F7 amplifying circuit are the plug-in encapsulation.
Said LNA-B3 LNA unit and LNA-LB LNA unit are the two-stage filtering circuit, employing+3.3v low voltage power supply mode.
Adopt the beneficial effect that technique scheme produced to be:
1, realizes the compatibility of Big Dipper B3 and GPS/B1 two cover systems through two groups of relatively independent down-converted; Through the level control of local oscillator being realized the switching of two-way local oscillator; And the reception that has realized GPS and the same passage of B1 two cover systems handles, and has that volume is little, power consumption is little, integrated level is high, the signal to noise ratio (S/N ratio) advantages of higher.
2, realize the down-converted of radiofrequency signal through the scheme of single-conversion, adopt the low voltage operating pattern; Realized the low-power consumption characteristic of module.
3, the dual stage filter in the low noise amplifier has suppressed the mirror image frequency clutter of rear end receiver module frequency mixer well; The radio frequency input has added the one-level low noise amplifier circuit, has improved module whole noise figure index effectively; The squareness factor of radio-frequency filter and intermediate-frequency filter suppresses image frequency signal better in the raising circuit, to guarantee the receiving sensitivity of receiver.
4, structure interface adopts the plug-in IC design, through adopting the DIP packaged type to make things convenient for problem inquiry in use and handling, has also reduced volume and height simultaneously.
5, the phase noise index of local oscillator is great for the effect relation of radio communication, and for the phase noise index that improves the two-way local oscillator guarantees the volume miniaturization simultaneously, we have selected the near-end 10MHz surface mount compensation crystal oscillator preferably of making an uproar mutually for use.
Description of drawings
Fig. 1 is the theory diagram of the utility model;
Fig. 2 is the LNA-B3 LNA unit theory diagram of the utility model;
Fig. 3 is the LNA-LB LNA unit theory diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
The utility model example proposes a kind of Big Dipper two generations satellite navigation compatible type receiver module, adopts the method for single-conversion to carry out frequency-conversion processing to received signal, and the compatible Big Dipper of while and GPS two cover systems.
A kind of satellite navigation compatible type receiver module is characterized in that said module comprises first passage that receives big-dipper satellite B3 frequency band signals and the second channel that receives big-dipper satellite B1 frequency range/gps satellite L1 frequency band signals; The shared phase-locked loop circuit of gps satellite L1 frequency range and big-dipper satellite B1 frequency range in the said second channel is through realizing the switching of two-way local oscillator to the level control of local oscillator.
Said first passage comprises LNA-B3 LNA unit, radiofrequency signal F1 amplifying circuit, radio frequency band filter BPF1, the multiplier that is used for the first passage mixing, phase-locked loop circuit PLL1,10M temperature compensating crystal oscillator unit if bandpas filter BPF2 and the intermediate-freuqncy signal F6 amplifying circuit of cascade successively; Said second channel comprises LNA-LB LNA unit, radiofrequency signal F2 amplifying circuit, radio frequency band filter BPF3, the multiplier that is used for the second channel mixing, phase-locked loop circuit PLL2, said 10M temperature compensating crystal oscillator unit, if bandpas filter BPF4 and the intermediate-freuqncy signal F7 amplifying circuit of cascade successively, and Big Dipper B1 or the gps signal that receives carried out single-conversion output intermediate-freuqncy signal; The output terminal of said 10M temperature compensating crystal oscillator unit connects the input end of said phase-locked loop circuit PLL1 and phase-locked loop circuit PLL2 respectively, and frequency signal F3 that said phase-locked loop circuit PLL1 and phase-locked loop circuit PLL2 are synthetic and F4 insert the said multiplier and the multiplier that is used for the second channel mixing that is used for the first passage mixing respectively.
Another road output terminal output 62MHz clock signal F5 of said phase-locked loop circuit PLL1.
Said radiofrequency signal F1 amplifying circuit; Radio frequency band filter BPF1; The multiplier that is used for the first passage mixing; Phase-locked loop circuit PLL1; 10M temperature compensating crystal oscillator unit if bandpas filter BPF2; Intermediate-freuqncy signal F6 amplifying circuit; LNA-LB LNA unit; Radiofrequency signal F2 amplifying circuit; Radio frequency band filter BPF3; The multiplier that is used for the second channel mixing; Phase-locked loop circuit PLL2; 10M temperature compensating crystal oscillator unit; If bandpas filter BPF4 and intermediate-freuqncy signal F7 amplifying circuit are the plug-in encapsulation.
Said LNA-B3 LNA unit and LNA-LB LNA unit are the two-stage filtering circuit, employing+3.3v low voltage power supply mode.
B3 with B1 satellite emission signal receive respectively through two groups of antennas; Its centre frequency is respectively B1:1561.098MHz B3:1268.52MHz L1:1575.42MHz and imports F1, F2 hereinafter to be referred as satellite-signal, is sent to the input end of radio frequency amplifying circuit unit after satellite-signal F1, F2 amplify through low noise.
Local oscillator adopts low local oscillator frequency conversion mode, and B3 frequency range local oscillator is selected 1222MHz, and L1 frequency range local oscillator is selected 1529MHz, and B1 frequency range local oscillator is selected 1515MHz; Local oscillator is made up of two phaselocked loops, and wherein the B3 frequency range is switched through monolithic is implemented level with a phaselocked loop L1 and shared another phaselocked loop of B1 frequency range.
It is the local oscillation signal F3 of B3 frequency range that temperature compensating crystal oscillator 10MHz circuit unit produces frequency through phase-locked loop circuit PLL1, and its frequency is 1222MHz; Through the local oscillation signal F4 that phase-locked loop circuit PLL2 produces, frequency is B1 frequency range 1505MHz, or frequency is L1 frequency range 1529MHz.The different frequency value of local oscillation signal F4 is switched by Single-chip Controlling phase-locked loop circuit PLL2.
After the satellite-signal F1 of LNA-B3 LNA unit input passes through amplification, filtering,, produce IF-FRE, obtain signal F6 after the filtering, become output signal IF-B3out after the amplification with signal F3 mixing in multiplier of phase-locked loop circuit PLL1 output; Similarly, the satellite-signal F2 of LNA-LB LNA unit input is transformed to output signal IF-LBout.
The present embodiment internal reference signal is 10MHz, and internal reference signal is connected to phase-locked loop pll 1 generation one road 1222MHz local oscillation signal F3 and a tunnel and is the 62MHz clock signal F5 of clock reference for the IF process plate.
The LNA-LB low noise is put unit and LNA-B3 low noise and is put the low noise amplifier tube MGA86563 that the unit adopts AT company to produce in the present embodiment, the AD8367 with AGC function that the amplifying circuit of intermediate-freuqncy signal F5, F6 and F6 adopts AD company to produce.
Each passage all adopts 3 groups of bandwidth-limited circuits in the present embodiment.Wherein BPF1 and BPF3 are radio-frequency filter, and its band connection frequency section is respectively 1255MHz～1280MHz and 1560MHz～1576MHz; BPF2 and BPF5 are intermediate-frequency filter, and its band connection frequency section is respectively 36MHz～57MHz and 44MHz～49MHz.
The phase noise index of local oscillator is great for the effect relation of radio communication; For the phase noise index that improves the two-way local oscillator guarantees the volume miniaturization simultaneously; Selected the near-end 10MHz surface mount compensation crystal oscillator preferably of making an uproar mutually for use, the local oscillator near-end index of making an uproar is mutually determined with reference to crystal oscillator phase noise index by the 10MHz of the following stated:
-110dBc/Hz100Hz；-130dBc/Hz1KHz；-145dBc/Hz100KHz
The index of the local oscillator far-end making an uproar mutually depends on the phase noise index of built-in VCO, and concrete data are listed as follows:
Offset carrier is made an uproar mutually
-89dBc/Hz10KHz；-100dBc/Hz100KHz
Through above method for designing, make the utility model module improve circuit level effectively, reduced volume, reduced power consumption, the while dismantles easily and is connected.
Module adopts external LNA (LNA); Its noise figure NF=1.4～1.6dB, gain G a ≈ 35 ~ 40dB, employing+3.3V low voltage power supply; Through module prevention at radio-frequency port feed, suppressed the mirror image frequency clutter of rear end receiver module frequency mixer well through the dual stage filter among the LNA.
The above embodiment is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also make some improvement and retouching, these improvement and retouching also are regarded as the protection domain of the utility model.
Claims (5)
1. a satellite navigation compatible type receiver module is characterized in that comprising first passage and second channel; Phase-locked loop circuit output signal frequency in the said second channel is controlled by level; Said first passage comprises LNA-B3 LNA unit, radiofrequency signal F1 amplifying circuit, radio frequency band filter BPF1, multiplier, phase-locked loop circuit PLL1,10M temperature compensating crystal oscillator unit, if bandpas filter BPF2 and the intermediate-freuqncy signal F6 amplifying circuit of cascade successively; Said second channel comprises LNA-LB LNA unit, radiofrequency signal F2 amplifying circuit, radio frequency band filter BPF3, multiplier, phase-locked loop circuit PLL2, said 10M temperature compensating crystal oscillator unit, if bandpas filter BPF4 and the intermediate-freuqncy signal F7 amplifying circuit of cascade successively; The output terminal of said 10M temperature compensating crystal oscillator unit connects the input end of said phase-locked loop circuit PLL1 and phase-locked loop circuit PLL2 respectively, and frequency signal F3 that said phase-locked loop circuit PLL1 and phase-locked loop circuit PLL2 are synthetic and F4 insert the said multiplier and the multiplier that is used for second channel that is used for first passage respectively.
2. satellite navigation compatible type receiver module according to claim 1 is characterized in that another road output terminal of said phase-locked loop circuit PLL1 is exported 62MHz clock signal F5.
3. satellite navigation compatible type receiver module according to claim 1 and 2 is characterized in that said radiofrequency signal F1 amplifying circuit, radio frequency band filter BPF1, the multiplier that is used for the first passage mixing, phase-locked loop circuit PLL1,10M temperature compensating crystal oscillator unit if bandpas filter BPF2, intermediate-freuqncy signal F6 amplifying circuit, LNA-LB LNA unit, radiofrequency signal F2 amplifying circuit, radio frequency band filter BPF3, the multiplier that is used for the second channel mixing, phase-locked loop circuit PLL2,10M temperature compensating crystal oscillator unit, if bandpas filter BPF4 and intermediate-freuqncy signal F7 amplifying circuit are the plug-in encapsulation.
4. satellite navigation compatible type receiver module according to claim 1 and 2 is characterized in that said LNA-B3 LNA unit and LNA-LB LNA unit are the two-stage filtering circuit, employing+3.3v low voltage power supply mode.
5. satellite navigation compatible type receiver module according to claim 3 is characterized in that said LNA-B3 LNA unit and LNA-LB LNA unit are the two-stage filtering circuit, employing+3.3v low voltage power supply mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202950528U CN202182944U (en) | 2011-08-15 | 2011-08-15 | Compatible reception module for satellite navigation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202950528U CN202182944U (en) | 2011-08-15 | 2011-08-15 | Compatible reception module for satellite navigation |
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| Publication Number | Publication Date |
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| CN202182944U true CN202182944U (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202950528U Expired - Fee Related CN202182944U (en) | 2011-08-15 | 2011-08-15 | Compatible reception module for satellite navigation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749589A (en) * | 2013-12-30 | 2015-07-01 | 南京理工大学常熟研究院有限公司 | Miniature Beidou/GPS dual-mode radio frequency module |
| CN105530043A (en) * | 2015-12-07 | 2016-04-27 | 中国电子科技集团公司第十研究所 | Airborne terminal compatible with dual-system satellite communication link work |
| TWI596363B (en) * | 2012-07-25 | 2017-08-21 | Lighthouse Technology & Consulting Co Ltd | Satellite positioning signal receiving method and device |
-
2011
- 2011-08-15 CN CN2011202950528U patent/CN202182944U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI596363B (en) * | 2012-07-25 | 2017-08-21 | Lighthouse Technology & Consulting Co Ltd | Satellite positioning signal receiving method and device |
| CN104749589A (en) * | 2013-12-30 | 2015-07-01 | 南京理工大学常熟研究院有限公司 | Miniature Beidou/GPS dual-mode radio frequency module |
| CN105530043A (en) * | 2015-12-07 | 2016-04-27 | 中国电子科技集团公司第十研究所 | Airborne terminal compatible with dual-system satellite communication link work |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120404 Termination date: 20120815 |