CN105467413B - A kind of satellite navigation radio frequency chip and system with temperature-compensating - Google Patents
A kind of satellite navigation radio frequency chip and system with temperature-compensating Download PDFInfo
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- CN105467413B CN105467413B CN201510889357.4A CN201510889357A CN105467413B CN 105467413 B CN105467413 B CN 105467413B CN 201510889357 A CN201510889357 A CN 201510889357A CN 105467413 B CN105467413 B CN 105467413B
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- China
- Prior art keywords
- switch
- output end
- input
- variable gain
- satellite navigation
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The invention belongs to technical field of satellite navigation, discloses a kind of satellite navigation radio frequency chip and system with temperature-compensating.The chip includes the first RF switch, the output end of first RF switch is connected with the input of low-noise amplifier, the output end of low-noise amplifier is connected with the input of frequency mixer, the output end of frequency mixer is connected with the input of intermediate-frequency filter, and the output end of intermediate-frequency filter is connected with the input of variable gain amplifier；By bypassing the output end with the second RF switch between first RF switch and low-noise amplifier, the input of the second RF switch is connected with noise source；The control terminal of variable gain amplifier and the output end of power detection controller, the output end of the input connection variable gain amplifier of power detection controller.The satellite navigation radio frequency chip has automatic temperature compensation function, simplifies design, improves level of integrated system, reduce volume, reduces power consumption.
Description
Technical field
The invention belongs to technical field of satellite navigation, more particularly to a kind of satellite navigation radio frequency chip with temperature-compensating and
System.
Background technology
Because satellite navigation signals are easily by intentional or unintentionally various interference, therefore satellite navigation system is dry
The study hotspot suppressed as military communication field is disturbed, is to protect to a key request of radio-frequency front-end in anti-interference type receiver
The stabilization of gain is held, influence of the change of temperature to radio-frequency front-end gain is huge in various severe complex environment conditions, institute
There is great military value and realistic meaning to study the satellite navigation radio frequency chip with temperature-compensating.
Traditional satellite navigation radio frequency chip does not have temperature compensation function, in a device to use external temperature sensor more
With DSP (digital signal processor) mode, in temperature change, change information is fed back to DSP by temperature sensor, by DSP
Processing adjusts the gain of radio frequency chip by communication interface again, ensures the stabilization of satellite navigation radio frequency chip gain with this.This
Kind scheme needs substantial amounts of hardware and software to support, system complex, debugging is difficult, volume is big, power consumption is high, it is anti-interference to be difficult to
The miniaturization of type receiver.
The content of the invention
It is an object of the invention to provide a kind of satellite navigation radio frequency chip and system with temperature-compensating, greatly simplify
The design of receiver, improves level of integrated system, reduces volume, reduces power consumption.
To achieve the above objectives, the present invention is achieved using following technical scheme.
A kind of satellite navigation radio system with temperature-compensating, including a kind of satellite navigation radio frequency core with temperature-compensating
Piece, it is characterised in that：This includes the RF switch of satellite navigation radio frequency chip first with temperature-compensating, first RF switch
Output end be connected with the input of low-noise amplifier, the output end of the low-noise amplifier and the input of frequency mixer
Be connected, the output end of the frequency mixer is connected with the input of intermediate-frequency filter, the output end of the intermediate-frequency filter with
The input of variable gain amplifier is connected；
It is connected between first RF switch and low-noise amplifier by bypassing with the output end of the second RF switch
Connect, the input of second RF switch is connected with noise source；
The control terminal of the variable gain amplifier is connected with the output end of power detection controller, the power detection
The input of controller connects the output end of the variable gain amplifier；
It is the control terminal of first RF switch, the control terminal of the second RF switch, the second of power detection controller defeated
Go out end and be used for connection corresponding with external control unit outside.
The characteristics of above-mentioned technical proposal and further improvement：
Further, the input of first RF switch is provided with antenna.
Further, the second input of the frequency mixer is connected with the output end of a frequency synthesizer.
The intermediate-freuqncy signal preset value that variable gain amplifier needs to export, the power inspection are provided with external control unit outside
Survey the intermediate-freuqncy signal detected value of the output of controller detection variable gain amplifier and be transferred to external control unit outside, outside control
Unit controls the first RF switch opening according to the difference of intermediate-freuqncy signal detected value and intermediate-freuqncy signal preset value and the second radio frequency is opened
Close splice grafting and enter noise source, meanwhile, power detection controller adjusts the gain of variable gain amplifier, makes variable gain amplifier
The intermediate-freuqncy signal of output be intermediate-freuqncy signal preset value, then external control unit outside controls the first RF switch closure and second penetrates
Frequency switch is opened.
The satellite navigation radio frequency chip and system with temperature-compensating of the present invention, the satellite navigation radio frequency chip have automatic
Temperature compensation function, it is not necessary to the device such as external temperature sensor and DSP, greatly simplify the design of receiver, carry
High level of integrated system, reduces volume, reduces power consumption.
Brief description of the drawings
Fig. 1 is a kind of structural representation of satellite navigation radio frequency chip with temperature-compensating of the present invention；
In figure：1st, the first RF switch；2nd, the second RF switch.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
Reference picture 1, for a kind of structural representation of satellite navigation radio frequency chip with temperature-compensating of the present invention；The satellite
Navigation radio frequency chip includes the first RF switch 1, the input input satellite navigation signals of the first RF switch 1；First radio frequency
The output end of switch 1 is connected with the input of low-noise amplifier, the output end of low-noise amplifier and the input of frequency mixer
End is connected, and the output end of frequency mixer is connected with the input of intermediate-frequency filter, the output end of intermediate-frequency filter and variable increasing
The input of beneficial amplifier is connected, the output end output IF output signal of variable gain amplifier.
It is connected between first RF switch 1 and low-noise amplifier by bypassing with the output end of the second RF switch 2,
The input of second RF switch 2 is connected with noise source；The control terminal of variable gain amplifier is defeated with power detection controller
Go out end to be connected, the output end of the input of power detection controller connection variable gain amplifier, variable gain amplifier with
Power detection controller forms a loop.The control terminal of first RF switch 1, the control terminal of the second RF switch 2, power inspection
The second output end for surveying controller is used for connection corresponding with connection external control unit outside.
The input of first RF switch 1 is provided with antenna, and antenna is used for the reception of satellite navigation signals.
Second input of frequency mixer is connected with the output end of a frequency synthesizer.
A kind of satellite navigation radio system with temperature-compensating, including the above-mentioned satellite navigation radio frequency with temperature-compensating
Chip, the intermediate-freuqncy signal preset value that variable gain amplifier needs to export, power detection control are provided with external control unit outside
The intermediate-freuqncy signal detected value of the output of device detection variable gain amplifier is simultaneously transferred to external control unit outside, external control unit outside root
The first RF switch (1) opening and the second RF switch are controlled according to the difference of intermediate-freuqncy signal detected value and intermediate-freuqncy signal preset value
(2) access noise source is closed, meanwhile, power detection controller adjusts the gain of variable gain amplifier, amplifies variable gain
The intermediate-freuqncy signal of the output of device is intermediate-freuqncy signal preset value, then external control unit outside control the first RF switch (1) closure and
Second RF switch (2) is opened.
The course of work of the satellite navigation radio frequency chip：During the satellite navigation radio frequency chip normal work, the first radio frequency is opened
1 closure is closed, the second RF switch 2 is opened, and satellite navigation signals enter the input of low-noise amplifier, power detection controller
The IF output signal of continuous detection variable gain amplifier output, if the IF output signal detected changes, passes through
The closure access noise source of second RF switch 2, power detection controller adjust the gain of variable gain amplifier, make the satellite
The gain stabilization of navigation radio frequency chip.Specific embodiment is as follows：Assuming that the gain of the satellite navigation radio frequency chip needs stabilization to exist
60dB, when intermediate frequency output signal power changes 3dB, external control unit outside detects that intermediate frequency exports by power detection controller
The change of signal, external control unit outside control the first RF switch 1 to open, and the second RF switch 2 closes, low-noise amplifier
Input connects noise source, and power detection controller adjusts the gain of variable gain amplifier, makes the gain stabilization of radio frequency chip
In 60dB, the first RF switch 1 is then closed, opens the second RF switch 2, satellite navigation signals are again introduced into low noise amplification
The input of device, the satellite navigation radio frequency chip recover normal work.
The satellite navigation radio frequency chip and system with temperature-compensating of the present invention, the satellite navigation radio frequency chip have automatic
Temperature compensation function, it is not necessary to the device such as external temperature sensor and DSP, greatly simplify the design of receiver, carry
High level of integrated system, reduces volume, reduces power consumption.
Although embodiment of the present invention is described above in association with accompanying drawing, the invention is not limited in above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment is only schematical, directiveness, rather than limitation
Property.One of ordinary skill in the art is under the enlightenment of specification, in the scope for not departing from the claims in the present invention and being protected
In the case of, the form of many kinds can also be made, these belong to the row of protection of the invention.
Claims (1)
- A kind of 1. satellite navigation radio system with temperature-compensating, it is characterised in that：Penetrated including the satellite navigation with temperature-compensating Frequency chip, the satellite navigation radio frequency chip with temperature-compensating include the first RF switch (1), first RF switch (1) output end is connected with the input of low-noise amplifier, the output end of the low-noise amplifier and frequency mixer it is defeated Enter end to be connected, the output end of the frequency mixer is connected with the input of intermediate-frequency filter, the output of the intermediate-frequency filter End is connected with the input of variable gain amplifier；First RF switch (1) is between low-noise amplifier by bypassing the output end phase with the second RF switch (2) Connection, the input of second RF switch (2) are connected with noise source；The control terminal of the variable gain amplifier is connected with the output end of power detection controller, the power detection control The input of device connects the output end of the variable gain amplifier；The control terminal of first RF switch (1), the control terminal of the second RF switch (2), the second of power detection controller Output end is used for connection corresponding with external control unit outside；Second input of the frequency mixer is connected with the output end of a frequency synthesizer；The input of first RF switch (1) is provided with antenna；The intermediate-freuqncy signal preset value that variable gain amplifier needs to export, the power inspection are provided with the external control unit outside Survey the intermediate-freuqncy signal detected value of the output of controller detection variable gain amplifier and be transferred to external control unit outside, outside control Unit controls the first RF switch (1) opening and the second radio frequency according to the difference of intermediate-freuqncy signal detected value and intermediate-freuqncy signal preset value (2) closure access noise source is switched, meanwhile, power detection controller adjusts the gain of variable gain amplifier, makes variable gain The intermediate-freuqncy signal of the output of amplifier is intermediate-freuqncy signal preset value, and then external control unit outside controls the first RF switch (1) to close Close and the second RF switch (2) is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510889357.4A CN105467413B (en) | 2015-12-07 | 2015-12-07 | A kind of satellite navigation radio frequency chip and system with temperature-compensating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510889357.4A CN105467413B (en) | 2015-12-07 | 2015-12-07 | A kind of satellite navigation radio frequency chip and system with temperature-compensating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105467413A CN105467413A (en) | 2016-04-06 |
| CN105467413B true CN105467413B (en) | 2017-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510889357.4A Expired - Fee Related CN105467413B (en) | 2015-12-07 | 2015-12-07 | A kind of satellite navigation radio frequency chip and system with temperature-compensating |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112904335A (en) * | 2021-02-04 | 2021-06-04 | 中国科学院东北地理与农业生态研究所 | Unmanned aerial vehicle carries Ka band microwave radiometer system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA95605B (en) * | 1994-04-28 | 1995-12-20 | Qualcomm Inc | Method and apparatus for automatic gain control and dc offset cancellation in quadrature receiver |
| CN101009491A (en) * | 2006-01-27 | 2007-08-01 | 络达科技股份有限公司 | Emitter with temperature compensation gain |
| US8587477B2 (en) * | 2010-01-25 | 2013-11-19 | Qualcomm Incorporated | Analog front end for system simultaneously receiving GPS and GLONASS signals |
| CN103580704B (en) * | 2012-07-25 | 2015-05-20 | 中国科学院微电子研究所 | Receiver device adopting automatic gain control and method for controlling receiver by means of automatic gain |
| CN203688805U (en) * | 2014-01-22 | 2014-07-02 | 哈尔滨工业大学 | Satellite navigation signal intermediate-frequency sampling apparatus |
| CN204228950U (en) * | 2014-11-28 | 2015-03-25 | 北京爱洁隆技术有限公司 | A kind of radar system L-band transceiver |
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2015
- 2015-12-07 CN CN201510889357.4A patent/CN105467413B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN105467413A (en) | 2016-04-06 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A satellite navigation radio frequency chip with temperature compensating and a system thereof Effective date of registration: 20180827 Granted publication date: 20171114 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: XI'AN AEROSPACE HUAXUN TECHNOLOGY Co.,Ltd. Registration number: 2018610000137 |
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Date of cancellation: 20191012 Granted publication date: 20171114 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: XI'AN AEROSPACE HUAXUN TECHNOLOGY Co.,Ltd. Registration number: 2018610000137 |
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