CN104730547B - It is applied to the logarithmic amplifying circuit of Tacan ground installation receiver - Google Patents
It is applied to the logarithmic amplifying circuit of Tacan ground installation receiver Download PDFInfo
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- CN104730547B CN104730547B CN201510132667.1A CN201510132667A CN104730547B CN 104730547 B CN104730547 B CN 104730547B CN 201510132667 A CN201510132667 A CN 201510132667A CN 104730547 B CN104730547 B CN 104730547B
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- Prior art keywords
- logafier
- filter circuit
- circuit
- ground installation
- output
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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
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The present invention relates to a kind of logarithmic amplifying circuit for being applied to Tacan ground installation receiver,Circuit includes transistor buffers,First filter circuit,Second filter circuit,First logafier,Second logafier,3rd logafier and the 4th logafier,The detection of the first logafier and the 3rd logafier is exported by after crystal buffer,With the second logafier,The detection output of the 4th logafier is collectively forming logarithm output,It is supplied to base band signal process and control unit,Suppress for follow-up signal transacting and continuous wave,Intermediate frequency 63MHz modulated signals are through the first logafier,Second filter circuit,3rd logafier,Exported after amplification,It is used to face radio frequency channel suppression after detection,Have the technical effect that the logarithmic amplifying circuit through experiment,Circuit working stability,Dependable performance,It has been successfully applied to Tacan ground installation,On the equipment receiver such as mobile unit and distance-measuring equipment,Achieve preferable technical benefits and economic benefit.
Description
Technical field
The present invention relates to area navigation technology, more particularly to a kind of logarithmic amplification for being applied to Tacan ground installation receiver
Circuit.
Background technology
The conventional logarithmic amplifying circuit for being applied to Tacan ground installation receiver uses two-stage wide-band logafier,
Gain is low, noise is big, can not meet Tacan ground installation receiver high sensitivity, the requirement of Larger Dynamic scope, how to solve this
Individual problem just becomes those skilled in the art's problem to be studied and solved.
The content of the invention
In order to overcome the deficiencies in the prior art, for the problem that existing gain is low, noise is big, there is provided one kind is applied to Tacan
The logarithmic amplifying circuit of ground installation receiver, concrete technical scheme is, a kind of to be applied to the right of Tacan ground installation receiver
Number amplifying circuit, including transistor buffers, the first filter circuit, the second filter circuit, the first logafier, the second logarithm
Amplifier, the 3rd logafier and the 4th logafier, it is characterised in that：First logafier and first, second filter
Wave circuit and transistor buffers are connected, while being 63MHz signal input end of intermediate frequency；3rd logafier delays with transistor
Device and the connection of the 4th logafier are rushed, while the 4th logafier is video output terminals and logarithm output end；Second logarithm
Amplifier is connected with the first filter circuit and transistor buffers, while be connected together constituting logarithm output with the 4th amplifier
End；The detection output of the first logafier and the 3rd logafier by after crystal buffer, and the second logafier,
The detection output of the 4th logafier is collectively forming logarithm output, there is provided to base band signal process and control unit, after being used for
Continuous signal transacting and continuous wave suppress, and intermediate frequency 63MHz modulated signals are through the first logafier, the second filter circuit, the 3rd
Logafier, the output of the 4th logafier, are used to face radio frequency channel suppression after detection.
The solution have the advantages that logarithmic amplifying circuit is through experiment, circuit working stability, dependable performance, successful Application
Onto equipment receivers such as Tacan ground installation, mobile unit and distance-measuring equipments, preferable technical benefits and economic effect are achieved
Benefit.
Brief description of the drawings
Fig. 1 is circuit connection block diagram of the present invention.
Specific embodiment
This circuit uses continuous amplitude limit detection logarithmic amplification principle, using level Four logarithmic amplification, increases the sensitive of the circuit
Degree and dynamic range.Circuit includes transistor buffers, the first filter circuit, the second filter circuit, the first logafier, the
Two logafiers, the 3rd logafier and the 4th logafier, the first logafier and first, second filter circuit
And transistor buffers connection, while being 63MHz signal input end of intermediate frequency；3rd logafier and transistor buffers and
4th logafier is connected, while the 4th logafier is video output terminals and logarithm output end；Second logafier
It is connected with the first filter circuit and transistor buffers, while be connected together constituting logarithm output end with the 4th amplifier.The
The detection output of one logafier and the 3rd logafier is by after crystal buffer, and the second logafier, the 4th
The detection output of logafier is collectively forming logarithm output, there is provided to base band signal process and control unit, for follow-up
Signal transacting and continuous wave suppress, and intermediate frequency 63MHz modulated signals are through the first logafier, the second filter circuit, the 3rd logarithm
Amplifier, the output of the 4th logafier, are used to face radio frequency channel suppression after detection.
The circuit increased the first filter circuit, the second filter circuit, reduce noise, improve signal to noise ratio.
The circuit engineering index is
1st, working frequency：63MHz.
2nd, dynamic range：80 dB.
3rd, small-signal gain：72dB.
4th, video frequency output：8mVpp
5th, logarithmic precision：0.5dB.
6th, supply voltage：6V.
7th, signal level/noise level is more than 2.
8th, operating temperature range：-40℃~+55℃.
Claims (1)
1. a kind of logarithmic amplifying circuit for being applied to Tacan ground installation receiver, including transistor buffers, the first filtered electrical
Road, the second filter circuit, the first logafier, the second logafier, the 3rd logafier and the 4th logafier,
It is characterized in that：First logafier is connected with first, second filter circuit and transistor buffers, while being 63MHz
Signal input end of intermediate frequency；3rd logafier is connected with transistor buffers and the 4th logafier, while the 4th logarithm
Amplifier is video output terminals and logarithm output end；Second logafier and the first filter circuit and transistor buffers connect
Connect, while be connected together constituting logarithm output end with the 4th amplifier；First logafier and the 3rd logafier
Detection output by after crystal buffer, and the second logafier, the 4th logafier detection output be collectively forming it is right
Number output, there is provided to base band signal process and control unit, suppress for follow-up signal transacting and continuous wave, intermediate frequency 63MHz
Modulated signal is exported through the first logafier, the second filter circuit, the 3rd logafier, the 4th logafier, through inspection
It is used to face radio frequency channel suppression after ripple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132667.1A CN104730547B (en) | 2015-03-25 | 2015-03-25 | It is applied to the logarithmic amplifying circuit of Tacan ground installation receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132667.1A CN104730547B (en) | 2015-03-25 | 2015-03-25 | It is applied to the logarithmic amplifying circuit of Tacan ground installation receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104730547A CN104730547A (en) | 2015-06-24 |
| CN104730547B true CN104730547B (en) | 2017-06-09 |
Family
ID=53454618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510132667.1A Active CN104730547B (en) | 2015-03-25 | 2015-03-25 | It is applied to the logarithmic amplifying circuit of Tacan ground installation receiver |
Country Status (1)
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| CN (1) | CN104730547B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190379Y (en) * | 1994-02-02 | 1995-02-22 | 电子工业部第五十四研究所 | Compressed receiver |
| CN202364206U (en) * | 2011-10-17 | 2012-08-01 | 天津七六四通信导航技术有限公司 | Receiver circuit based on L wave band |
| WO2012150565A2 (en) * | 2011-05-05 | 2012-11-08 | Ste S.A.S. Di G. Moiraghi & C. | Receiver of radiofrequency signals |
| CN202841107U (en) * | 2012-06-14 | 2013-03-27 | 成都九洲迪飞科技有限责任公司 | High precision receiver reception module |
| CN204046522U (en) * | 2014-06-25 | 2014-12-24 | 成都九洲迪飞科技有限责任公司 | Wide band logarithmic amplifier |
| CN204556835U (en) * | 2015-03-25 | 2015-08-12 | 天津七六四通信导航技术有限公司 | A kind of logarithmic amplifying circuit being applied to Tacan uphole equipment receiver |
-
2015
- 2015-03-25 CN CN201510132667.1A patent/CN104730547B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190379Y (en) * | 1994-02-02 | 1995-02-22 | 电子工业部第五十四研究所 | Compressed receiver |
| WO2012150565A2 (en) * | 2011-05-05 | 2012-11-08 | Ste S.A.S. Di G. Moiraghi & C. | Receiver of radiofrequency signals |
| CN202364206U (en) * | 2011-10-17 | 2012-08-01 | 天津七六四通信导航技术有限公司 | Receiver circuit based on L wave band |
| CN202841107U (en) * | 2012-06-14 | 2013-03-27 | 成都九洲迪飞科技有限责任公司 | High precision receiver reception module |
| CN204046522U (en) * | 2014-06-25 | 2014-12-24 | 成都九洲迪飞科技有限责任公司 | Wide band logarithmic amplifier |
| CN204556835U (en) * | 2015-03-25 | 2015-08-12 | 天津七六四通信导航技术有限公司 | A kind of logarithmic amplifying circuit being applied to Tacan uphole equipment receiver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104730547A (en) | 2015-06-24 |
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