CN105467413A - A satellite navigation radio frequency chip with temperature compensating and a system thereof - Google Patents
A satellite navigation radio frequency chip with temperature compensating and a system thereof Download PDFInfo
- Publication number
- CN105467413A CN105467413A CN201510889357.4A CN201510889357A CN105467413A CN 105467413 A CN105467413 A CN 105467413A CN 201510889357 A CN201510889357 A CN 201510889357A CN 105467413 A CN105467413 A CN 105467413A
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- Prior art keywords
- frequency
- radio
- switch
- output terminal
- satellite navigation
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Classifications
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- 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
Abstract
The invention belongs to technical field of satellite navigation, and discloses a satellite navigation radio frequency chip with temperature compensating and a system thereof. The chip comprises a first radio frequency switch. An output terminal of the first radio frequency switch is connected to an input terminal of a low noise amplifier. An output terminal of the low noise amplifier is connected to an input terminal of a mixer. An output terminal of the mixer is connected to an input terminal of an intermediate frequency filter. An output terminal of the intermediate frequency filter is connected to an input terminal of a variable gain amplifier. The portion between first radio frequency switch and the low noise amplifier is connected to an output terminal of the second radio frequency switch through a bypass. An input terminal of the second radio frequency switch is connected to a noise source. A control terminal of the variable gain amplifier is connected to an output terminal of a power detection controller. An input terminal of the power detection controller is connected to an output terminal of the variable gain amplifier. The satellite navigation radio frequency chip has a temperature compensating function, simplifies a design scheme, raises a system integration degree, reduces a size and lowers power consumption.
Description
Technical field
The invention belongs to technical field of satellite navigation, particularly a kind of satellite navigation radio frequency chip with temperature compensation and system.
Background technology
Due to satellite navigation signals be easily subject to have a mind to or various interference unintentionally, therefore the AF panel of satellite navigation system becomes the study hotspot in military communication field, in anti-interference type receiver, a key request of radio frequency front end keeps stablizing of gain, in various severe complex environment condition, the impact of the change radio frequency front-end gain of temperature is huge, so the satellite navigation radio frequency chip of research band temperature compensation has great military value and realistic meaning.
Traditional satellite navigation radio frequency chip does not have temperature compensation function, the mode adopting external temperature sensor and DSP (digital signal processor) in a device more, when temperature variation, change information is fed back to DSP by temperature sensor, regulated the gain of radio frequency chip through DSP process again by communication interface, ensure the stable of satellite navigation radio frequency chip gain with this.This scheme needs a large amount of hardware and software supports, and system complex, debug difficulties, volume are large, power consumption is high, be difficult to the miniaturization realizing anti-interference type receiver.
Summary of the invention
The object of this invention is to provide a kind of satellite navigation radio frequency chip with temperature compensation and system, greatly simplify the design proposal of receiver, improve level of integrated system, reduce volume, reduce power consumption.
For reaching above object, the present invention is achieved by the following technical solutions.
Scheme one:
A kind of satellite navigation radio frequency chip with temperature compensation, it is characterized in that: comprise the first radio-frequency (RF) switch, the described output terminal of the first radio-frequency (RF) switch is connected with the input end of low noise amplifier, the output terminal of described low noise amplifier is connected with the input end of frequency mixer, the output terminal of described frequency mixer is connected with the input end of intermediate-frequency filter, and the output terminal of described intermediate-frequency filter is connected with the input end of variable gain amplifier;
Described first radio-frequency (RF) switch is connected by the output terminal of bypass with the second radio-frequency (RF) switch with between low noise amplifier, and the input end of described second radio-frequency (RF) switch is connected with noise source;
The control end of described variable gain amplifier is connected with the output terminal of power detection controller, and the input end of described power detection controller connects the output terminal of described variable gain amplifier;
Second output terminal of the control end of described first radio-frequency (RF) switch, the control end of the second radio-frequency (RF) switch, power detection controller is used for connect corresponding with external control unit outside.
The feature of technique scheme and improvement further:
Further, the input end of described first radio-frequency (RF) switch is provided with antenna.
Further, the second input end of described frequency mixer is connected with the output terminal of a frequency synthesizer.
Scheme two:
A kind of satellite navigation radio system with temperature compensation, it is characterized in that: the satellite navigation radio frequency chip comprising the band temperature compensation described in any one of claim 1-3, the intermediate-freuqncy signal preset value that variable gain amplifier needs to export is provided with in described external control unit outside, described power detection controller detects the intermediate-freuqncy signal detected value of the output of variable gain amplifier and is transferred to external control unit outside, external control unit outside controls the first radio-frequency (RF) switch according to the difference of intermediate-freuqncy signal detected value and intermediate-freuqncy signal preset value and to open and the second radio-frequency (RF) switch closes access noise source, simultaneously, power detection controller regulates the gain of variable gain amplifier, the intermediate-freuqncy signal of the output of variable gain amplifier is made to be intermediate-freuqncy signal preset value, then external control unit outside controls closed and the second radio-frequency (RF) switch of the first radio-frequency (RF) switch and opens.
The satellite navigation radio frequency chip of band temperature compensation of the present invention and system, this satellite navigation radio frequency chip has automatic temperature compensation function, do not need the devices such as external temperature sensor and DSP, greatly simplify the design proposal of receiver, improve level of integrated system, reduce volume, reduce power consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of satellite navigation radio frequency chip with temperature compensation of the present invention;
In figure: 1, the first radio-frequency (RF) switch; 2, the second radio-frequency (RF) switch.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
With reference to Fig. 1, it is the structural representation of a kind of satellite navigation radio frequency chip with temperature compensation of the present invention; This satellite navigation radio frequency chip comprises the input end input satellite navigation signals of the first radio-frequency (RF) switch 1, first radio-frequency (RF) switch 1; The output terminal of the first radio-frequency (RF) switch 1 is connected with the input end of low noise amplifier, the output terminal of low noise amplifier is connected with the input end of frequency mixer, the output terminal of frequency mixer is connected with the input end of intermediate-frequency filter, the output terminal of intermediate-frequency filter is connected with the input end of variable gain amplifier, and the output terminal of variable gain amplifier exports IF output signal.
First radio-frequency (RF) switch 1 is connected by the output terminal of bypass with the second radio-frequency (RF) switch 2 with between low noise amplifier, and the input end of the second radio-frequency (RF) switch 2 is connected with noise source; The control end of variable gain amplifier is connected with the output terminal of power detection controller, and the input end of power detection controller connects the output terminal of variable gain amplifier, and variable gain amplifier and power detection controller form a loop.Second output terminal of the control end of the first radio-frequency (RF) switch 1, the control end of the second radio-frequency (RF) switch 2, power detection controller is used for connection that external control unit outside is corresponding connects.
The input end of the first radio-frequency (RF) switch 1 is provided with antenna, and antenna is used for the reception of satellite navigation signals.
Second input end of frequency mixer is connected with the output terminal of a frequency synthesizer.
A kind of satellite navigation radio system with temperature compensation, comprising the satellite navigation radio frequency chip of above-mentioned band temperature compensation, the intermediate-freuqncy signal preset value that variable gain amplifier needs to export is provided with in external control unit outside, power detection controller detects the intermediate-freuqncy signal detected value of the output of variable gain amplifier and is transferred to external control unit outside, external control unit outside controls the first radio-frequency (RF) switch (1) according to the difference of intermediate-freuqncy signal detected value and intermediate-freuqncy signal preset value and opens and the closed access noise source of the second radio-frequency (RF) switch (2), simultaneously, power detection controller regulates the gain of variable gain amplifier, the intermediate-freuqncy signal of the output of variable gain amplifier is made to be intermediate-freuqncy signal preset value, then external control unit outside controls closed and the second radio-frequency (RF) switch (2) of the first radio-frequency (RF) switch (1) and opens.
The course of work of this satellite navigation radio frequency chip: when this satellite navigation radio frequency chip normally works, first radio-frequency (RF) switch 1 closes, second radio-frequency (RF) switch 2 is opened, satellite navigation signals enters the input end of low noise amplifier, the IF output signal that power detection controller continuous detecting variable gain amplifier exports, if during the IF output signal change detected, by the closed access noise source of the second radio-frequency (RF) switch 2, power detection controller regulates the gain of variable gain amplifier, makes the gain stabilization of this satellite navigation radio frequency chip.Specific embodiment is as follows: suppose that the gain of this satellite navigation radio frequency chip needs to be stabilized in 60dB, as intermediate frequency output signal power change 3dB, external control unit outside detects the change of IF output signal by power detection controller, external control unit outside controls the first radio-frequency (RF) switch 1 and opens, second radio-frequency (RF) switch 2 closes, the input end of low noise amplifier is communicated with noise source, power detection controller regulates the gain of variable gain amplifier, make the gain stabilization of radio frequency chip at 60dB, then closed first radio-frequency (RF) switch 1, open the second radio-frequency (RF) switch 2, satellite navigation signals enters the input end of low noise amplifier again, this satellite navigation radio frequency chip recovers normal work.
The satellite navigation radio frequency chip of band temperature compensation of the present invention and system, this satellite navigation radio frequency chip has automatic temperature compensation function, do not need the devices such as external temperature sensor and DSP, greatly simplify the design proposal of receiver, improve level of integrated system, reduce volume, reduce power consumption.
Although be below described embodiment of the present invention by reference to the accompanying drawings, the present invention is not limited to above-mentioned specific embodiments and applications field, and above-mentioned specific embodiments is only schematic, guiding, instead of restrictive.Those of ordinary skill in the art is under the enlightenment of instructions, and when not departing from the scope that the claims in the present invention are protected, can also make a variety of forms, these all belong to the row of the present invention's protection.
Claims (4)
1. the satellite navigation radio frequency chip with temperature compensation, it is characterized in that: comprise the first radio-frequency (RF) switch (1), the output terminal of described first radio-frequency (RF) switch (1) is connected with the input end of low noise amplifier, the output terminal of described low noise amplifier is connected with the input end of frequency mixer, the output terminal of described frequency mixer is connected with the input end of intermediate-frequency filter, and the output terminal of described intermediate-frequency filter is connected with the input end of variable gain amplifier;
Described first radio-frequency (RF) switch (1) is connected by the output terminal of bypass with the second radio-frequency (RF) switch (2) with between low noise amplifier, and the input end of described second radio-frequency (RF) switch (2) is connected with noise source;
The control end of described variable gain amplifier is connected with the output terminal of power detection controller, and the input end of described power detection controller connects the output terminal of described variable gain amplifier;
Second output terminal of the control end of described first radio-frequency (RF) switch (1), the control end of the second radio-frequency (RF) switch (2), power detection controller is used for connect corresponding with external control unit outside.
2. a kind of satellite navigation radio frequency chip with temperature compensation as claimed in claim 1, is characterized in that: the second input end of described frequency mixer is connected with the output terminal of a frequency synthesizer.
3. a kind of satellite navigation radio frequency chip with temperature compensation as claimed in claim 1 or 2, is characterized in that: the input end of described first radio-frequency (RF) switch (1) is provided with antenna.
4. the satellite navigation radio system with temperature compensation, it is characterized in that: the satellite navigation radio frequency chip comprising the band temperature compensation described in any one of claim 1-3, the intermediate-freuqncy signal preset value that variable gain amplifier needs to export is provided with in described external control unit outside, described power detection controller detects the intermediate-freuqncy signal detected value of the output of variable gain amplifier and is transferred to external control unit outside, external control unit outside controls the first radio-frequency (RF) switch (1) according to the difference of intermediate-freuqncy signal detected value and intermediate-freuqncy signal preset value and opens and the closed access noise source of the second radio-frequency (RF) switch (2), simultaneously, power detection controller regulates the gain of variable gain amplifier, the intermediate-freuqncy signal of the output of variable gain amplifier is made to be intermediate-freuqncy signal preset value, then external control unit outside controls closed and the second radio-frequency (RF) switch (2) of the first radio-frequency (RF) switch (1) and opens.
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| 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 |
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| 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 |
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| CN105467413A true CN105467413A (en) | 2016-04-06 |
| CN105467413B CN105467413B (en) | 2017-11-14 |
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| 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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Cited By (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 |
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| WO1995030275A1 (en) * | 1994-04-28 | 1995-11-09 | Qualcomm Incorporated | 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 |
| WO2011090497A1 (en) * | 2010-01-25 | 2011-07-28 | Atheros Communications, Inc. | Analog front end for system simultaneously receiving gps and glonass signals |
| CN103580704A (en) * | 2012-07-25 | 2014-02-12 | 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 |
-
2015
- 2015-12-07 CN CN201510889357.4A patent/CN105467413B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995030275A1 (en) * | 1994-04-28 | 1995-11-09 | Qualcomm Incorporated | 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 |
| WO2011090497A1 (en) * | 2010-01-25 | 2011-07-28 | Atheros Communications, Inc. | Analog front end for system simultaneously receiving gps and glonass signals |
| CN103580704A (en) * | 2012-07-25 | 2014-02-12 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| CN105467413B (en) | 2017-11-14 |
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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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