CN104730547A - Logarithmic amplifying circuit applied to receiver of Tacan ground device - Google Patents
Logarithmic amplifying circuit applied to receiver of Tacan ground device Download PDFInfo
- Publication number
- CN104730547A CN104730547A CN201510132667.1A CN201510132667A CN104730547A CN 104730547 A CN104730547 A CN 104730547A CN 201510132667 A CN201510132667 A CN 201510132667A CN 104730547 A CN104730547 A CN 104730547A
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- CN
- China
- Prior art keywords
- logarithmic amplifier
- logarithmic
- amplifier
- circuit
- filtering circuit
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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 invention relates to a logarithmic amplifying circuit applied to a receiver of a Tacan ground device. The logarithmic amplifying circuit comprises a transistor buffer, a first filtering circuit, a second filtering circuit, a first logarithmic amplifier, a second logarithmic amplifier, a third logarithmic amplifier and a fourth logarithmic amplifier. After passing through the transistor buffer, detected output of the first logarithmic amplifier and the third logarithmic amplifier forms logarithmic output together with the detected output of the second logarithmic amplifier and the fourth logarithmic amplifier, then the logarithmic output is provided for a baseband signal processing and controlling unit for subsequent signal processing and continuous wave restraining, and intermediate-frequency 63 MHz modulation signals are output after being amplified by the first logarithmic amplifier, the second filtering circuit and the third logarithmic amplifier and are used for neighboring channel restraining after being detected. The logarithmic amplifying circuit has the technical advantages that through experiments, the circuit is stable in work and reliable in performance, the circuit has been successfully applied to receivers of devices such as Tacan ground devices, vehicle-mounted devices and distance measuring equipment, and the good technical benefits and economic benefits are obtained.
Description
Technical field
The present invention relates to ground navigation technology, particularly a kind of logarithmic amplifying circuit being applied to Tacan uphole equipment receiver, be applicable to ground Tacan, DME equipment.
Background technology
The logarithmic amplifying circuit being applied to Tacan uphole equipment receiver in the past adopts two-stage wide-band logarithmic amplifier, gain is low, noise is large, can not meet the requirement of Tacan uphole equipment receiver high sensitivity, great dynamic range, how to address this problem the problem just becoming those skilled in the art and will study and solve.
Summary of the invention
In order to overcome the deficiencies in the prior art, low for existing gain, the problem that noise is large, a kind of logarithmic amplifying circuit being applied to Tacan uphole equipment receiver is provided, concrete technical scheme is, a kind of logarithmic amplifying circuit being applied to Tacan uphole equipment receiver, comprise transistor buffers, first filtering circuit, second filtering circuit, first logarithmic amplifier, second logarithmic amplifier, 3rd logarithmic amplifier and the 4th logarithmic amplifier, it is characterized in that: the first logarithmic amplifier and first, second filtering circuit and transistor buffers connect, it is 63MHz signal input end of intermediate frequency simultaneously, 3rd logarithmic amplifier is connected with transistor buffers and the 4th logarithmic amplifier, and the 4th logarithmic amplifier is video output terminals and logarithm output terminal simultaneously, second logarithmic amplifier is connected with the first wave filter and transistor buffers, is connected simultaneously together constitutes logarithm output terminal with the 4th amplifier.The detection of the first logarithmic amplifier and the 3rd logarithmic amplifier exports after crystal impact damper, export the common logarithm that formed with the detection of the second logarithmic amplifier, the 4th logarithmic amplifier to export, be supplied to base band signal process and control module, suppress for follow-up signal transacting and continuous wave, intermediate frequency 63MHz modulation signal through, the first logarithmic amplifier, the second filtering circuit, the 3rd logarithmic amplifier, amplify after export, after detection for face radio frequency channel suppress.
Technique effect of the present invention is logarithmic amplifying circuit through test, and circuit working is stablized, and dependable performance, has been successfully applied on the equipment receivers such as Tacan uphole equipment, mobile unit and distance-measuring equipment, has achieved good technical benefits and economic benefit.
Accompanying drawing explanation
Fig. 1 is that circuit of the present invention connects block diagram.
Embodiment
This circuit adopts continuous amplitude limit detection logarithmic amplification principle, adopts level Four logarithmic amplification, increases sensitivity and the dynamic range of this circuit.Circuit comprises transistor buffers, the first filtering circuit, the second filtering circuit, the first logarithmic amplifier, the second logarithmic amplifier, the 3rd logarithmic amplifier and the 4th logarithmic amplifier, first logarithmic amplifier is connected with first, second filtering circuit and transistor buffers, is 63MHz signal input end of intermediate frequency simultaneously; 3rd logarithmic amplifier is connected with transistor buffers and the 4th logarithmic amplifier, and the 4th logarithmic amplifier is video output terminals and logarithm output terminal simultaneously; Second logarithmic amplifier is connected with the first wave filter and transistor buffers, is connected simultaneously together constitutes logarithm output terminal with the 4th amplifier.The detection of the first logarithmic amplifier and the 3rd logarithmic amplifier exports after crystal impact damper, export the common logarithm that formed with the detection of the second logarithmic amplifier, the 4th logarithmic amplifier to export, be supplied to base band signal process and control module, suppress for follow-up signal transacting and continuous wave, intermediate frequency 63MHz modulation signal through, the first logarithmic amplifier, the second filtering circuit, the 3rd logarithmic amplifier, amplify after export, after detection for face radio frequency channel suppress.
This circuit adds the first filtering circuit, the second filtering circuit, reduces noise, improves signal to noise ratio (S/N ratio).
This circuit engineering index is
1, frequency of operation: 63MHz.
2, dynamic range: 80 dB.
3, small-signal gain: 72dB.
4, video frequency output: 8mV
pp
5, logarithmic precision: 0.5dB.
6, supply voltage: 6V.
7, signal level/noise level is greater than 2.
8, operating temperature range :-40 DEG C ~+55 DEG C.
Claims (1)
1. one kind is applied to the logarithmic amplifying circuit of Tacan uphole equipment receiver, comprise transistor buffers, the first filtering circuit, the second filtering circuit, the first logarithmic amplifier, the second logarithmic amplifier, the 3rd logarithmic amplifier and the 4th logarithmic amplifier, it is characterized in that: the first logarithmic amplifier is connected with first, second filtering circuit and transistor buffers, be 63MHz signal input end of intermediate frequency simultaneously; 3rd logarithmic amplifier is connected with transistor buffers and the 4th logarithmic amplifier, and the 4th logarithmic amplifier is video output terminals and logarithm output terminal simultaneously; Second logarithmic amplifier is connected with the first wave filter and transistor buffers, is connected simultaneously together constitutes logarithm output terminal with the 4th amplifier;
The detection of the first logarithmic amplifier and the 3rd logarithmic amplifier exports after crystal impact damper, export the common logarithm that formed with the detection of the second logarithmic amplifier, the 4th logarithmic amplifier to export, be supplied to base band signal process and control module, suppress for follow-up signal transacting and continuous wave, intermediate frequency 63MHz modulation signal through, the first logarithmic amplifier, the second filtering circuit, the 3rd logarithmic amplifier, amplify after export, after detection for face radio frequency channel suppress.
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 true CN104730547A (en) | 2015-06-24 |
| CN104730547B 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)
| Country | Link |
|---|---|
| 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 |
|---|---|
| CN104730547B (en) | 2017-06-09 |
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