CN206117600U - Frequency spectrum monitoring devices's signal amplification circuit - Google Patents
Frequency spectrum monitoring devices's signal amplification circuit Download PDFInfo
- Publication number
- CN206117600U CN206117600U CN201620983951.XU CN201620983951U CN206117600U CN 206117600 U CN206117600 U CN 206117600U CN 201620983951 U CN201620983951 U CN 201620983951U CN 206117600 U CN206117600 U CN 206117600U
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- Prior art keywords
- resistance
- triode
- electric capacity
- chip
- amplification circuit
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Abstract
The utility model discloses a frequency spectrum monitoring devices's signal amplification circuit, including chip U1, resistance R1, electric capacity C1, triode VT1, diode D1 and triode VT2, chip U1 input is connecting resistance R1 and power VCC respectively, and the resistance R1 other end is connecting resistance R2 and electric capacity C1 respectively, and chip U1 earthing terminal, electric capacity C2 and triode VT1 collecting electrode are connected respectively to the resistance R2 other end, and the electric capacity C1 other end, the electric capacity C2 other end, resistance R4, diode D1 negative pole and resistance R6 are connected respectively to triode VT1 projecting pole. The utility model discloses frequency spectrum monitoring devices's signal amplification circuit adopts chip U1 cooperation triode to control, when effectively going on amplifying to the signal of input, has still improved the efficiency and the output of circuit, and circuit structure is simple, and is with low costs, small.
Description
Technical field
The utility model is related to a kind of spectrum monitoring device, specifically a kind of signal amplification circuit of spectrum monitoring device.
Background technology
Monitoring radio-frequency spectrum system is the important system realized electromagnetic environment and radio signal monitoring and manage, and it is led
It is to provide basic data for frequency management to act on, and is that radio control and control provide technological means.
With the high speed development of radio monitoring technology, the radio monitoring and direction-finding equipment in national each province and city and system are sent out
Open up polytype, such as fixed monitoring station, vehicle-mounted mobile station, airborne monitoring system, carrier-borne monitoring system and portable monitoring system
System.
Than an indispensable link, how no matter which kind of monitoring device, to the signal that it is monitored process is amplified, be
The signal amplification circuit of low cost is provided, is the emphasis studied always in industry.
Utility model content
The purpose of this utility model is to provide a kind of signal amplification circuit of the spectrum monitoring device of low cost, to solve
The problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme：
A kind of signal amplification circuit of spectrum monitoring device, including chip U1, resistance R1, electric capacity C1, triode VT1, two
Pole pipe D1 and triode VT2, the chip U1 inputs connect respectively resistance R1 and power supply VCC, and the resistance R1 other ends connect respectively
Connecting resistance R2 and electric capacity C1, the resistance R2 other end connects respectively chip U1 earth terminals, electric capacity C2 and triode VT1 colelctor electrodes, and three
Pole pipe VT1 emitter stage connects respectively the electric capacity C1 other ends, the electric capacity C2 other ends, resistance R4, diode D1 negative poles and resistance R6, electricity
Resistance R4 other end difference connecting triode VT1 base stages, electric capacity C3 and resistance R3, electric capacity C3 other ends connection signal input part Vi,
The resistance R3 other ends connect respectively chip U1 output ends, resistance R5, triode VT2 colelctor electrodes and electric capacity C4, the resistance R5 other ends
Connect diode D1 positive poles and triode VT2 base stages respectively, the triode VT2 emitter stages connection resistance R6 other ends, electric capacity C4 is another
One end connects output end vo.
As further program of the utility model：The chip U1 adopts LM317.
As the utility model further scheme：The power supply VCC voltages are 12V.
Compared with prior art, the beneficial effects of the utility model are：The signal of the utility model spectrum monitoring device is put
Big circuit coordinates triode to be controlled using chip U1, while effectively the signal to being input into is amplified, also improves electricity
The efficiency and power output on road, circuit structure is simple, low cost, small volume.
Description of the drawings
Fig. 1 is the circuit diagram of the signal amplification circuit of spectrum monitoring device.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1 is referred to, in the utility model embodiment, a kind of signal amplification circuit of spectrum monitoring device, including chip
U1, resistance R1, electric capacity C1, triode VT1, diode D1 and triode VT2, the chip U1 inputs connect respectively resistance R1
With power supply VCC, the resistance R1 other ends connect respectively resistance R2 and electric capacity C1, and the resistance R2 other ends connect respectively chip U1 ground connection
End, electric capacity C2 and triode VT1 colelctor electrodes, triode VT1 emitter stages connect respectively the electric capacity C1 other ends, the electric capacity C2 other ends,
Resistance R4, diode D1 negative poles and resistance R6, resistance R4 other ends difference connecting triode VT1 base stages, electric capacity C3 and resistance R3,
The electric capacity C3 other ends connect signal input part Vi, and the resistance R3 other ends connect respectively chip U1 output ends, resistance R5, triode
VT2 colelctor electrodes and electric capacity C4, the resistance R5 other ends connect respectively diode D1 positive poles and triode VT2 base stages, and triode VT2 sends out
Emitter-base bandgap grading connects the resistance R6 other ends, electric capacity C4 other ends connection output end vo；The chip U1 adopts LM317；The power supply VCC
Voltage is 12V.
Operation principle of the present utility model is：Refer to Fig. 1, triode VT1 as voltage amplification, because of voltage stabilizing integrated chip
The input impedance of U1 is high, therefore its operating current is it is sufficient that only need 0.6mA, and resistance R1 and electric capacity C1 is power supply VCC decouplings, electric capacity
C2 is used to prevent unwanted oscillation, and resistance R3 and resistance R4 partial pressures provide biasing and alternating current-direct current feedback to VT1, linear and straight to improve
Stream stability, triode VT2, resistance R5, resistance R6 and diode D1 constitute constant-current source, for improving efficiency and the output of circuit
Power, increases out-put dynamic range, after signal is entered from signal input part Vi, after above-mentioned enhanced processing, then through electric capacity
Export after C4 couplings.
In sum, the signal amplification circuit of the utility model spectrum monitoring device coordinates triode to carry out using chip U1
Control, while effectively the signal to being input into is amplified, also improves the efficiency and power output of circuit, circuit structure letter
It is single, low cost, small volume.
Claims (3)
1. a kind of signal amplification circuit of spectrum monitoring device, including chip U1, resistance R1, electric capacity C1, triode VT1, two poles
Pipe D1 and triode VT2, it is characterised in that the chip U1 inputs connect respectively resistance R1 and power supply VCC, and resistance R1 is another
End connects respectively resistance R2 and electric capacity C1, and the resistance R2 other ends connect respectively chip U1 earth terminals, electric capacity C2 and triode VT1 collection
Electrode, triode VT1 emitter stages connect respectively the electric capacity C1 other ends, the electric capacity C2 other ends, resistance R4, diode D1 negative poles and electricity
Resistance R6, resistance R4 other ends difference connecting triode VT1 base stages, electric capacity C3 and resistance R3, electric capacity C3 other ends connection signal is defeated
Enter and hold Vi, the resistance R3 other ends connect respectively chip U1 output ends, resistance R5, triode VT2 colelctor electrodes and electric capacity C4, resistance R5
The other end connects respectively diode D1 positive poles and triode VT2 base stages, the triode VT2 emitter stages connection resistance R6 other ends, electricity
Hold C4 other ends connection output end vo.
2. the signal amplification circuit of spectrum monitoring device according to claim 1, it is characterised in that the chip U1 is adopted
LM317。
3. the signal amplification circuit of spectrum monitoring device according to claim 1, it is characterised in that the power supply VCC is electric
Press as 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620983951.XU CN206117600U (en) | 2016-08-30 | 2016-08-30 | Frequency spectrum monitoring devices's signal amplification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620983951.XU CN206117600U (en) | 2016-08-30 | 2016-08-30 | Frequency spectrum monitoring devices's signal amplification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206117600U true CN206117600U (en) | 2017-04-19 |
Family
ID=58514663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620983951.XU Expired - Fee Related CN206117600U (en) | 2016-08-30 | 2016-08-30 | Frequency spectrum monitoring devices's signal amplification circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206117600U (en) |
-
2016
- 2016-08-30 CN CN201620983951.XU patent/CN206117600U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20170830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |