CN204422761U - Based on the GPS fore device of 1030MHz and 1090MHz frequency - Google Patents
Based on the GPS fore device of 1030MHz and 1090MHz frequency Download PDFInfo
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- CN204422761U CN204422761U CN201520164032.5U CN201520164032U CN204422761U CN 204422761 U CN204422761 U CN 204422761U CN 201520164032 U CN201520164032 U CN 201520164032U CN 204422761 U CN204422761 U CN 204422761U
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Abstract
The utility model discloses a kind of GPS fore device based on 1030MHz and 1090MHz frequency, comprise: antenna, low noise amplifier, two power splitters, first via signal processing channel and the second road signal processing channel, antenna, low noise amplifier, two power splitters are connected successively, and the output of two power splitters connects first via signal processing channel and the second road signal processing channel respectively; First via signal processing channel and the second road signal processing channel are used for processing the gps signal of 1030MHz frequency and 1090MHz frequency respectively.The utility model achieves the reception of gps satellite 1030MHz and 1090MHz frequency signal, and exports 50MHz and 70MHz two-way intermediate-freuqncy signal; In addition, the utility model also has the advantages such as output gain is adjustable, volume is little, low in energy consumption.
Description
Technical field
The utility model belongs to radio communication and GPS (Global Position System, GPS) technical field of satellite navigation, is specifically related to a kind of GPS fore device based on 1030MHz and 1090MHz frequency.
Background technology
GPS (GPS, Global Positioning System) be a kind of high-precision navigation positioning system, because it can realize round-the-clock, global and high-precision continuous navigation and location, be widely used in economic construction, science and technology and the numerous areas such as military in the last few years.Along with GPS widespread use, people it is also proposed high precision and the dynamic requirement of height to GPS.General single-frequency GPS receiver is not owing to eliminating ionospheric error, and can not solve the problems such as integer ambiguity preferably, therefore positioning precision is poor.Compared with single frequency receiving, dual-frequency receiver can solve some problems existed in single frequency receiving preferably, thus improves positioning precision.At present, most of receiver is based on 1575.42MHz and the 1227.6MHz frequency of gps satellite.
Summary of the invention
The purpose of this utility model is to provide a kind of GPS fore device based on 1030MHz and 1090MHz frequency.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
Based on a GPS fore device for 1030MHz and 1090MHz frequency, comprising:
Antenna, low noise amplifier, two power splitters, first via signal processing channel and the second road signal processing channel, antenna, low noise amplifier, two power splitters are connected successively, and the output of two power splitters connects first via signal processing channel and the second road signal processing channel respectively;
First via signal processing channel and the second road signal processing channel are used for processing the gps signal of 1030MHz frequency and 1090MHz frequency respectively, form by the first radio-frequency filter be connected successively, radio frequency amplifier, the second radio-frequency filter, frequency mixer, intermediate-frequency filter, intermediate frequency amplifier, gain controlled amplifier;
First via signal processing channel and the frequency mixer in the second road signal processing channel are also connected two-way local oscillator generation module, two-way local oscillator generation module is made up of the crystal oscillator be connected and frequency synthesizer, be used for producing the local oscillation signal that frequency is respectively 980MHz and 1020MHz, and the corresponding frequency mixer inputted in first via signal processing channel and the second road signal processing channel;
First via signal processing channel is also connected two-way voltage control module with the gain controlled amplifier in the second road signal processing channel, and two-way voltage control module comprises toggle switch and single-chip microcomputer, and toggle switch is all connected single-chip microcomputer with gain controlled amplifier.
Above-mentioned low noise amplifier adopts WHM0913R amplifier.
Above-mentioned two power splitters adopt BP2G1+.
The first radio-frequency filter in above-mentioned first via signal processing channel and the second radio-frequency filter all adopt FG031 radio-frequency filter.
The first radio-frequency filter in above-mentioned second road signal processing channel adopts FG081 radio-frequency filter, and the second radio-frequency filter adopts FG031 radio-frequency filter.
Above-mentioned radio frequency amplifier is HMC478ST89 radio frequency amplifier.
Above-mentioned frequency mixer is MAX2682, and frequency synthesizer is SI4133 frequency synthesizer.
Above-mentioned intermediate-frequency filter adopts CF46-13 intermediate-frequency filter.
Above-mentioned intermediate frequency amplifier adopts HMC5805T89 intermediate frequency amplifier.
Above-mentioned gain controlled amplifier is AD8367 amplifier, and the controller in two-way voltage control module is single-chip microcomputer C8051F021.
Compared to the prior art, the utility model has the following advantages and beneficial effect:
1, the reception of gps satellite 1030MHz and 1090MHz frequency signal is achieved, and exportable 50MHz and 70MHz two-way intermediate-freuqncy signal.
2,8dB gain reduction gain can be realized control, have the advantages that output gain is adjustable.
3, volume is little, low in energy consumption.
Accompanying drawing explanation
Fig. 1 is a kind of concrete structure block diagram of the utility model GPS fore device;
Fig. 2 is the concrete structure block diagram of MCU voltage control module in the utility model;
Fig. 3 is the concrete structure block diagram of local oscillator generation module in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
The utility model device IC used (Intergrated Circuit) chip, mainly comprise antenna, low noise amplifier, two power splitters, first via signal processing channel and the second road signal processing channel, antenna, low noise amplifier, two power splitters are connected successively, and the two-way of two power splitters exports and connects first via signal processing channel and the second road signal processing channel respectively.First via signal processing channel and the second road signal processing channel are used for processing the gps signal of 1030MHz frequency and 1090MHz frequency respectively.Wherein, first via signal processing channel comprises the first radio-frequency filter, the first radio frequency amplifier, the second radio-frequency filter, the first frequency mixer, the first intermediate-frequency filter, the first intermediate frequency amplifier, the first gain controlled amplifier that are connected successively; Second road signal processing channel comprises the 3rd radio-frequency filter, the second radio frequency amplifier, the 4th radio-frequency filter, the second frequency mixer, the second intermediate-frequency filter, the second intermediate frequency amplifier, the second gain controlled amplifier that are connected successively.First frequency mixer and the second frequency mixer are also connected two-way local oscillator generation module, and the first gain controlled amplifier is also connected two-way voltage control module with the second gain controlled amplifier.
Gps satellite signal is received by antenna, then carries out signal amplification through low noise amplifier LNA (Low Noise Amplifier).Satellite-signal after amplification is divided into two-way and inputs first via signal processing channel and the second road signal processing channel respectively by two power splitters.
In signal processing channel, the first radio-frequency filter and the 3rd radio-frequency filter are used for filtering noise signal carry out the frequency-selecting of signal; First radio frequency amplifier and the second radio frequency amplifier are used for the radiofrequency signal after to frequency-selecting and amplify, and improve signal gain; Second radio-frequency filter and the 4th radio-frequency filter are used for the image signal of filtered signal and noise signal, and further inhibition zone external noise and interference also improve image frequency rejection ability, avoid producing Image interference in downconversion process; First frequency mixer and the second frequency mixer realize frequency down-conversion function, and satellite RF signal and local oscillation signal are carried out mixing by it, and radiofrequency signal is converted to intermediate-freuqncy signal; First intermediate-frequency filter and the second intermediate-frequency filter are used for the undesired signal produced in filtering downconversion process, carry out the frequency-selecting of intermediate frequency; First intermediate frequency amplifier and the second intermediate frequency amplifier are used for realizing the gain of 20dB, intermediate-freuqncy signal are amplified.The first gain controlled amplifier controlled by two-way voltage control module and the second gain controlled amplifier, be used for carrying out artificial 8dB output gain to intermediate-freuqncy signal adjustable.
Shown in Fig. 1, the utility model is made up of two-way, is the L1 road based on 1030MHz frequency and the L2 road based on 1090MHz frequency respectively.Every road signal all amplifies and gain control through rf filtering, radio frequency amplification, secondary rf filtering, down coversion, intermediate frequency filtering, an intermediate frequency, finally exports intermediate-freuqncy signal.
In concrete enforcement, low noise amplifier adopts WHM0913R amplifier, and two power splitters adopt BP2G1+; In L1 road, first radio-frequency filter and the second wave filter all adopt FG031 radio-frequency filter, first radio frequency amplifier adopts HMC478ST89 radio frequency amplifier, frequency mixer adopts MAX2682 frequency mixer, intermediate-frequency filter adopts CF46-13 intermediate-frequency filter, intermediate frequency amplifier adopts HMC5805T89 intermediate frequency amplifier, and gain controlled amplifier adopts AD8367 amplifier, and single-chip microcomputer is C8051F021.
In L2 road, the 3rd radio-frequency filter adopts FG081 radio-frequency filter, and the 4th radio-frequency filter adopts FG031 radio-frequency filter, other modules model Jun Tong L1 road.
Shown in Fig. 2, it is adjustable that the utility model adopts 8051 series monolithic control modules to be used for controlling intermediate frequency output gain, during concrete enforcement, adopt C8051F021 model single-chip microcomputer, it is made up of programmable 51 single-chip microcomputer kernels, has inner DAC (Digital to Analog Convertor) digital to analog converter simultaneously.Plucking number sign switch and gain controlled amplifier AD8367 are connected with IO (Input Output) mouth of single-chip microcomputer respectively.By regulating plucking number sign switch to achieve digital signal input, the more inner DAC of single-chip microcomputer is sent to convert analog signal output to through I/O port.The simulating signal exported sends to AD8367 gain controller through I/O port again.This circuit realiration output gain controls adjustable.
Shown in Fig. 3, two-way local oscillator generation module of the present utility model, is formed primarily of crystal oscillator and SI4133 frequency synthesizer.The generation in SI4133 frequency synthesizer source have employed PLL (Phase Locked Loop, phaselocked loop) technology, PLL is a phase place degeneration factor, it is by VCO (Voltage Controlled Oscillator, voltage controlled oscillator), loop filter, phase detector composition, reference signal after utilizing phase detector to draw frequency division and the phase differential of output signal compare, and reach the effect of frequency synthesis.The output frequency f of two-way local oscillator generation module in the utility model
l1, f
l2be respectively 980MHz and 1020MHz:
f
L1＝1030MHz-50MHz＝980MHz (1)
f
L2＝1090MHz-70MHz＝1020MHz (2)
Two-way local oscillation signal sends to the first frequency mixer and the second frequency mixer respectively, carries out the down coversion of radiofrequency signal.Satellite-signal, through down coversion, is converted to the intermediate-freuqncy signal being convenient to process by radiofrequency signal.
Claims (10)
1., based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that, comprising:
Antenna, low noise amplifier, two power splitters, first via signal processing channel and the second road signal processing channel, antenna, low noise amplifier, two power splitters are connected successively, and the output of two power splitters connects first via signal processing channel and the second road signal processing channel respectively;
First via signal processing channel and the second road signal processing channel are used for processing the gps signal of 1030MHz frequency and 1090MHz frequency respectively, form by the first radio-frequency filter be connected successively, radio frequency amplifier, the second radio-frequency filter, frequency mixer, intermediate-frequency filter, intermediate frequency amplifier, gain controlled amplifier;
First via signal processing channel and the frequency mixer in the second road signal processing channel are also connected two-way local oscillator generation module, two-way local oscillator generation module is made up of the crystal oscillator be connected and frequency synthesizer, be used for producing the local oscillation signal that frequency is respectively 980MHz and 1020MHz, and the corresponding frequency mixer inputted in first via signal processing channel and the second road signal processing channel;
First via signal processing channel is also connected two-way voltage control module with the gain controlled amplifier in the second road signal processing channel, and two-way voltage control module comprises toggle switch and single-chip microcomputer, and toggle switch is all connected single-chip microcomputer with gain controlled amplifier.
2., as claimed in claim 1 based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that:
Described low noise amplifier adopts WHM0913R amplifier.
3., as claimed in claim 1 based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that:
Two described power splitters adopt BP2G1+.
4., as claimed in claim 1 based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that:
The first radio-frequency filter in described first via signal processing channel and the second radio-frequency filter all adopt FG031 radio-frequency filter.
5., as claimed in claim 1 based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that:
The first radio-frequency filter in the second described road signal processing channel adopts FG081 radio-frequency filter, and the second radio-frequency filter adopts FG031 radio-frequency filter.
6., as claimed in claim 1 based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that:
Described radio frequency amplifier is HMC478ST89 radio frequency amplifier.
7., as claimed in claim 1 based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that:
Described frequency mixer is MAX2682, and described frequency synthesizer is SI4133 frequency synthesizer.
8., as claimed in claim 1 based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that:
Described intermediate-frequency filter adopts CF46-13 intermediate-frequency filter.
9., as claimed in claim 1 based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that:
Described intermediate frequency amplifier adopts HMC5805T89 intermediate frequency amplifier.
10., as claimed in claim 1 based on the GPS fore device of 1030MHz and 1090MHz frequency, it is characterized in that:
Described gain controlled amplifier is AD8367 amplifier, and the controller in two-way voltage control module is single-chip microcomputer C8051F021.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520164032.5U CN204422761U (en) | 2015-03-23 | 2015-03-23 | Based on the GPS fore device of 1030MHz and 1090MHz frequency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520164032.5U CN204422761U (en) | 2015-03-23 | 2015-03-23 | Based on the GPS fore device of 1030MHz and 1090MHz frequency |
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| CN204422761U true CN204422761U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520164032.5U Expired - Fee Related CN204422761U (en) | 2015-03-23 | 2015-03-23 | Based on the GPS fore device of 1030MHz and 1090MHz frequency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533474A (en) * | 2016-11-22 | 2017-03-22 | 四川九洲电器集团有限责任公司 | Receiver and signal processing method |
-
2015
- 2015-03-23 CN CN201520164032.5U patent/CN204422761U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533474A (en) * | 2016-11-22 | 2017-03-22 | 四川九洲电器集团有限责任公司 | Receiver and signal processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20160323 |