CN104539269B - A kind of instrument landing ground installation signal processing circuit - Google Patents
A kind of instrument landing ground installation signal processing circuit Download PDFInfo
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- CN104539269B CN104539269B CN201410794129.4A CN201410794129A CN104539269B CN 104539269 B CN104539269 B CN 104539269B CN 201410794129 A CN201410794129 A CN 201410794129A CN 104539269 B CN104539269 B CN 104539269B
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Abstract
The present invention relates to a kind of instrument landing ground installation signal processing circuit.Including step attenuator, bandpass filter, the first radio frequency amplifier, the second radio frequency amplifier, the 3rd radio frequency amplifier, automatic gain control circuit, PIN diode attenuator, first detector, second detector, temperature-compensation circuit, the first operational amplifier and the second operational amplifier.Effectively overcomed during available circuit is designed using this circuit and existed without closed loop circuit and temperature-compensation circuit, be greatly influenced by temperature, input dynamic range is narrow, and exporting change is than defects such as larger and poor reliability.Using this circuit design, technical indicator is improved significantly, and input dynamic range is wide to reach 5dBm~35dBm, wide with input dynamic range, the features such as temperature compensation characteristic is good, stability is good.
Description
Technical field
The present invention relates to instrument landing ground installation, more particularly to a kind of instrument landing ground installation signal transacting electricity
Road.
Background technology
Signal processing circuit is equipped with for domestic new metric wave ILE (ILS).Instrument-landing-system（ILS）It is state
A kind of pacer approach control that border civil aviation organization determines, it can be provided vertically and horizontally for the aircraft of approach
Guidance information.At present it is known that the signal processing circuit of existing equipment is present does not have closed loop circuit and temperature-compensation circuit, receive
Temperature influence is very big, and input dynamic range is narrow, and exporting change is than larger, and the defect such as poor reliability.
The content of the invention
The present invention especially provides a kind of instrument landing ground for the technical problem and defect that overcome above-mentioned prior art to exist
Face device signal process circuit.New design so that technical indicator, integrated level, reliability and operability are significantly
Improve.
The present invention to achieve the above object, is adopted the technical scheme that：A kind of instrument landing ground installation signal transacting
Circuit, it is characterised in that：Including step attenuator, bandpass filter, the first radio frequency amplifier, the second radio frequency amplifier, the 3rd
Radio frequency amplifier, automatic gain control circuit, PIN diode attenuator, first detector, second detector, temperature-compensating electricity
Road, the first operational amplifier and the second operational amplifier；Wherein step attenuator is connected with bandpass filter, bandpass filter with
First radio frequency amplifier is connected, and the first radio frequency amplifier is connected with the second radio frequency amplifier, the second radio frequency amplifier respectively with PIN
Diode attenuator and first detector are connected, and automatic gain control circuit is connected with PIN diode attenuator, PIN diode
Attenuator is connected with the 3rd radio frequency amplifier, and the 3rd radio frequency amplifier is connected with second detector, and second detector and second is transported
Calculate amplifier；First detector is connected with temperature-compensation circuit, and temperature-compensation circuit is connected with the first operational amplifier.
The features of the present invention and beneficial effect are：Effectively overcome during available circuit is designed and exist without closed loop circuit
And temperature-compensation circuit, it is greatly influenced by temperature, input dynamic range is narrow, and exporting change lacks than larger and poor reliability etc.
Fall into.Using this circuit design, technical indicator is improved significantly, and input dynamic range is wide to reach -5dBm~-35dBm, with defeated
Enter wide dynamic range, the features such as temperature compensation characteristic is good, stability is good.Can be loaded in 6u standard subracks, in printed board and metallic shield
There is adjustable end points on box, it is easy to use, reliable, product can be successfully applied to.By gained radio frequency level signal after processing of circuit,
It is DC level；Gained baseband signal is audio signal, and the treatment to subsequent cell signal brings convenience.As long as before the present invention
End bandpass filter, output end low-pass filter circuit slightly change, you can suitable for different radiofrequency signal and different audios
Modulated signal, with the very big universal space.
Brief description of the drawings
Fig. 1 is signal processing circuit block diagram of the present invention；
Fig. 2 is radio-frequency amplifier circuit schematic diagram in Fig. 1；
Fig. 3 is temperature-compensation circuit schematic diagram in Fig. 1；
Fig. 4 is PIN diode attenuator circuit schematic diagram in Fig. 1.
Specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described：
Reference picture 1, signal processing circuit of the invention is made up of the part of identical eight, below with explanation of coming：Radio frequency
The front end of input is to install step attenuator as needed（5dB、10dB、15dB）.It is followed by a bandpass filter.Input letter
Number by public input channel, two radio frequency amplifiers are first passed through, then divide two-way, be all the way automatic gain（AGC）Control electricity
Road, to baseband signal output, another road is radio frequency level signal.Modulating baseband signal output is that stable 90Hz, 150Hz is adjusted
Baseband signal processed.Radio frequency level signal is the DC voltage proportional to radio frequency input.Signal processing circuit is instrument landing system
The input equipment of system, it can receive the different range signals transmitted from antenna feeder case, standby host monitoring and near field monitoring, work frequency
Section is covered each by 108MHz~112MHz（Course）With 328MHz~336MHz（Glide）.Input signal through this circuit treatment,
Baseband signal and radio frequency level signal that exportable system needs.
Outward appearance of the present invention is the approximate rectangle structure with metal shielding box, by this circuit design inside whole machine, knot
Structure uses board plug type structure, and maintainability is good.In order to eliminate interference to greatest extent, volume is reduced, whole module uses double-sided cloth
The mode of office, centre is separated with interlayer.Whole circuit is made up of the tunnel of identical eight, and each road is placed in the cavity of shielding box independence,
It does not interfere with each other, reliability is high, it is stable and reliable for performance.Radio frequency part device layout is as far as possible compact, shortens cabling, overstriking line width.Examine
Consider the earth point of each integrated package, the power supply associated stray of 50Hz is eliminated as far as possible, while carrying out the filtering and decoupling of power supply, this is right
Spurious reduction is improved, noise is reduced and eliminates amplifier self-excitation etc. and is all beneficial to.
This signal processing circuit uses three radio frequency amplifiers, and in radio-frequency amplifier circuit, amplifier tube is used
The product of Mini companies, the model ERA-3SM+ of amplifier tube N3 in circuit, its temperature range is wide, and gain is big, stable performance, energy
Meet design requirement.
Physical circuit is described as follows：Reference picture 2, the first radio frequency amplifier, the second radio frequency amplifier and the 3rd radio frequency amplify
Device circuit is respectively adopted ERA-3SM+ amplifier tube N3, and one end of electric capacity C22 is input, and the other end connects 1 pin of amplifier tube N3,
2 pin and 4 pin of amplifier tube N3 are grounded respectively, and 3 pin connect one end of electric capacity C42 and one end of inductance L7, the other end of electric capacity C42
It is output end, one end and one end of resistance R17 of the other end connection resistance R16 of inductance L7, the other end and resistance of resistance R16
The other end connection of R17 is followed by one end of one end, one end of electric capacity C25 and electric capacity C24 of inductance L8, the other end of electric capacity C25
The other end with electric capacity C24 is grounded respectively, after the other end of inductance L8 is connected with one end of one end of electric capacity C26 and electric capacity C27
Power supply VCC ends are connect, the other end of electric capacity C26 and the other end of electric capacity C27 are grounded respectively.
The radio frequency level signal section of this signal processing circuit applies temperature-compensation circuit.Radiofrequency signal is by diode
Detection feeds back to operational amplifier port.This operational amplifier is a high resistant buffer to detector diode.Another two
Pole pipe is used to compensate and follow the trail of the temperature drift of detector diode dc point, and differential is connected to operational amplifier and realizes chasing after
Track.Alternating component filters by resistance-capacitance circuit.The flip-flop of reservation is amplified by amplifier.Negative temperature system is increased in circuit
Several thermistors, the stabilization of output level when being further ensured that high/low temperature, output level is realized by adjusting potentiometer.Capacitance-resistance
The alternating component that circuit decay is left, finally obtains radio frequency level signal.Diode selects the product of Avago companies, in circuit
The model HSMS2825 of diode V4（Surface-mount type radio frequency Schottky-barrier diode）.
Physical circuit is described as follows：Reference picture 3, the temperature-compensation circuit of this signal processing circuit uses a HSMS2825
Diode V4, amplifier N4A and amplifier N4B, 4 pin of diode V4 be connected with one end of resistance R19 after for input, two poles
One end of the 3 pin connection resistance R20 of pipe V4, the other end of resistance R19 and the other end of resistance R20 are grounded respectively；Diode V4
2 pin connection electric capacity C28 one end, one end of resistance R21 and resistance R23 one end, the other end ground connection of electric capacity C28, resistance
One end of one end, one end of resistance R22 and electric capacity C30 of the other end connection resistance R27 of R21, a termination -15V of resistance R27
Power supply, one end of 1 pin, one end of electric capacity C29 and resistance R25 of the other end connection diode V4 of resistance R22, while diode
1 pin of V4 connects -15V power supplys, and the other end of electric capacity C29 and the other end of electric capacity C30 are grounded respectively；The other end of resistance R23 connects
One end of connecting resistance R24 and 3 pin of amplifier N4A, the other end ground connection of resistance R24；The 2 pin connection resistance R25 of amplifier N4A
The other end and resistance R26 one end, while 2 pin of amplifier N4A connect+15V power supplys；The other end connection of resistance R26 is amplified
1 pin of device N4A and one end of resistance R28,5 pin of the other end connection amplifier N4B of resistance R28 and one end of electric capacity C31, electricity
Hold the other end ground connection of C31；One end and one end of resistance R31 of the 6 pin connection resistance R30 of amplifier N4B, resistance R30's is another
One end connects one end of resistance R29 and one end of thermistor resistance R32, the other end and the thermistor resistance R32 of resistance R29
The other end connection after be grounded；The other end of resistance R31 be connected with 7 pin of amplifier N4B after as output end.
The closed loop circuit part of this signal processing circuit controls the electric current of PIN diode attenuator using AGC control voltages,
And then controlling amplification quantity, it is ensured that when input signal amplitude changes, baseband signal amplitude is constant.Radiofrequency signal is from amplifier to PIN
Diode attenuator, then by another PIN diode attenuator to load resistance, then is amplified by amplifier.AGC is controlled
The size of voltage is automatically generated by the amplitude of input radio frequency signal.PIN diode is from two poles of Agilent companies HSMP series
Pipe, the model HSMP3814 of PIN diode V6 and PIN diode V7, meets design requirement in circuit.
Physical circuit is described as follows：Reference picture 4, the PIN diode attenuator circuit of this signal processing circuit uses two
HSMP3814 PIN diodes, respectively PIN diode V6 and PIN diode V7, one end of electric capacity C36 is input, another
End connects one end of 2 pin, one end of electric capacity C37 and resistance R42 of PIN diode V7, the other end connection electric capacity of resistance R42
One end of one end, one end of electric capacity C38 and resistance R41 of C39, the other end of resistance R41 is connected with one end of electric capacity C40 and is followed by
+ 15V power supplys, the other end of the other end, the other end of electric capacity C39 and electric capacity C38 of electric capacity C40 is grounded respectively；PIN diode V7
3 pin connect one end of electric capacity C44 and one end of resistance R43, one end and the poles of PIN bis- of the other end connection electric capacity C45 of resistance R43
1 pin of pipe V6, the other end of electric capacity C44 and the other end of electric capacity C45 are grounded respectively；The 2 pin connection electric capacity of PIN diode V6
The other end of C37 and one end of inductance L9, one end and one end of resistance R44 of the other end connection electric capacity C41 of inductance L9, electric capacity
The other end ground connection of C41, the other end connection AGC control voltages end of resistance R44；The 3 pin connection electric capacity C42 of PIN diode V6
One end and resistance R45 one end, resistance R45 the other end ground connection, the other end of electric capacity C42 is used as output end.
Other parts in this signal processing circuit, such as step attenuator, bandpass filter and automatic growth control electricity
The circuit that road etc. is known in the art and commonly uses, will not be repeated here.According to the above description, you can realize the present invention.
Claims (1)
1. a kind of instrument landing ground installation signal processing circuit, it is characterised in that：Including step attenuator, bandpass filter,
First radio frequency amplifier, the second radio frequency amplifier, the 3rd radio frequency amplifier, automatic gain control circuit, PIN diode decay
Device, first detector, second detector, temperature-compensation circuit, the first operational amplifier and the second operational amplifier；Wherein walk level
Attenuator is connected with bandpass filter, and bandpass filter is connected with the first radio frequency amplifier, and the first radio frequency amplifier is penetrated with second
Audio amplifier is connected, and the second radio frequency amplifier is connected with PIN diode attenuator and first detector respectively, automatic growth control
Circuit is connected with PIN diode attenuator, and PIN diode attenuator is connected with the 3rd radio frequency amplifier, the 3rd radio frequency amplifier
It is connected with second detector, second detector and the second operational amplifier；First detector is connected with temperature-compensation circuit, temperature
Compensation circuit is connected with the first operational amplifier；
Described the first radio frequency amplifier, the second radio frequency amplifier and the 3rd radio-frequency amplifier circuit are respectively adopted ERA-3SM+ and put
One end of big pipe N3, electric capacity C22 are input, and the other end connects 1 pin of amplifier tube N3, and 2 pin and 4 pin of amplifier tube N3 connect respectively
Ground, one end of 3 pin connection electric capacity C42 and one end of inductance L7, the other end of electric capacity C42 is output end, the other end of inductance L7
One end of connection resistance R16 and one end of resistance R17, the other end connection of the other end and resistance R17 of resistance R16 are followed by inductance
One end of one end, one end of electric capacity C25 and electric capacity C24 of L8, the other end of electric capacity C25 and the other end of electric capacity C24 connect respectively
Ground, the other end of inductance L8 is connected with one end of one end of electric capacity C26 and electric capacity C27 and is followed by power supply VCC ends, and electric capacity C26's is another
The other end of one end and electric capacity C27 is grounded respectively；
Described temperature-compensation circuit uses HSMS2825 diodes V4, amplifier N4A and an amplifier N4B, diode V4
4 pin be connected with one end of resistance R19 after for input, one end of the 3 pin connection resistance R20 of diode V4, resistance R19's is another
The other end of one end and resistance R20 is grounded respectively；One end of the 2 pin connection electric capacity C28 of diode V4, one end of resistance R21 and
One end of resistance R23, the other end ground connection of electric capacity C28, one end of the other end connection resistance R27 of resistance R21, resistance R22
One end and one end of electric capacity C30, a termination -15V power supplys of resistance R27,1 pin of the other end connection diode V4 of resistance R22,
One end of electric capacity C29 and one end of resistance R25, while 1 pin of diode V4 connects -15V power supplys, the other end and electricity of electric capacity C29
The other end for holding C30 is grounded respectively；One end of the other end connection resistance R24 of resistance R23 and 3 pin of amplifier N4A, resistance
The other end ground connection of R24；The other end of the 2 pin connection resistance R25 of amplifier N4A and one end of resistance R26, while amplifier
2 pin of N4A connect+15V power supplys；1 pin of the other end connection amplifier N4A of resistance R26 and one end of resistance R28, resistance R28's
5 pin of other end connection amplifier N4B and one end of electric capacity C31, the other end ground connection of electric capacity C31；6 pin of amplifier N4B connect
One end of connecting resistance R30 and one end of resistance R31, one end of the other end connection resistance R29 of resistance R30 and thermistor resistance
One end of R32, the other end of resistance R29 is grounded after being connected with the other end of thermistor resistance R32；The other end of resistance R31
As output end after being connected with 7 pin of amplifier N4B；
Described PIN diode attenuator circuit use two HSMP3814 PIN diodes, respectively PIN diode V6 and
One end of PIN diode V7, electric capacity C36 are input, 2 pin of other end connection PIN diode V7, one end of electric capacity C37 and
One end of resistance R42, one end of one end, one end of electric capacity C38 and resistance R41 of the other end connection electric capacity C39 of resistance R42,
The other end of resistance R41 is connected with one end of electric capacity C40 and is followed by+15V power supplys, the other end of electric capacity C40, electric capacity C39 it is another
The other end of end and electric capacity C38 is grounded respectively；3 pin of PIN diode V7 connect one end of electric capacity C44 and one end of resistance R43,
One end of the other end connection electric capacity C45 of resistance R43 and 1 pin of PIN diode V6, the other end of electric capacity C44 and electric capacity C45's
The other end is grounded respectively；The other end of the 2 pin connection electric capacity C37 of PIN diode V6 and one end of inductance L9, inductance L9's is another
End connects one end of electric capacity C41 and one end of resistance R44, the other end ground connection of electric capacity C41, the other end connection AGC of resistance R44
Control voltage end；One end and one end of resistance R45 of the 3 pin connection electric capacity C42 of PIN diode V6, another termination of resistance R45
Ground, the other end of electric capacity C42 is used as output end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410794129.4A CN104539269B (en) | 2014-12-21 | 2014-12-21 | A kind of instrument landing ground installation signal processing circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410794129.4A CN104539269B (en) | 2014-12-21 | 2014-12-21 | A kind of instrument landing ground installation signal processing circuit |
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| CN104539269A CN104539269A (en) | 2015-04-22 |
| CN104539269B true CN104539269B (en) | 2017-06-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106100599B (en) * | 2016-06-12 | 2018-11-23 | 广州杰赛科技股份有限公司 | A kind of gain compensating method and device of radio-frequency module |
| CN106067772B (en) * | 2016-06-12 | 2018-05-18 | 广州杰赛科技股份有限公司 | The gain compensating method and device of a kind of radio-frequency module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438348A (en) * | 1978-10-06 | 1984-03-20 | Harris Corporation | Temperature compensated avalanche photodiode optical receiver circuit |
| CN2094164U (en) * | 1991-06-20 | 1992-01-22 | 北京电视技术研究所 | Agc frequency channel amplifier |
| CN1758779A (en) * | 2004-10-10 | 2006-04-12 | 中兴通讯股份有限公司 | Automatic gain control method and device for array antenna base station of time-division duplex system |
| CN101394151A (en) * | 2008-10-14 | 2009-03-25 | 福建先创电子有限公司 | Automatic gain compensation and linear control method and device for power amplifier |
| CN101841901A (en) * | 2009-12-30 | 2010-09-22 | 中国科学院电子学研究所 | Closed-loop automatic gain automatic control device and method for radio-frequency channel |
| CN204376854U (en) * | 2014-12-21 | 2015-06-03 | 天津七六四通信导航技术有限公司 | Instrument landing ground installation signal processing circuit |
-
2014
- 2014-12-21 CN CN201410794129.4A patent/CN104539269B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438348A (en) * | 1978-10-06 | 1984-03-20 | Harris Corporation | Temperature compensated avalanche photodiode optical receiver circuit |
| CN2094164U (en) * | 1991-06-20 | 1992-01-22 | 北京电视技术研究所 | Agc frequency channel amplifier |
| CN1758779A (en) * | 2004-10-10 | 2006-04-12 | 中兴通讯股份有限公司 | Automatic gain control method and device for array antenna base station of time-division duplex system |
| CN101394151A (en) * | 2008-10-14 | 2009-03-25 | 福建先创电子有限公司 | Automatic gain compensation and linear control method and device for power amplifier |
| CN101841901A (en) * | 2009-12-30 | 2010-09-22 | 中国科学院电子学研究所 | Closed-loop automatic gain automatic control device and method for radio-frequency channel |
| CN204376854U (en) * | 2014-12-21 | 2015-06-03 | 天津七六四通信导航技术有限公司 | Instrument landing ground installation signal processing circuit |
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