CN209057314U - A kind of satellite optical receiver circuit with dual output - Google Patents
A kind of satellite optical receiver circuit with dual output Download PDFInfo
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- CN209057314U CN209057314U CN201822150286.8U CN201822150286U CN209057314U CN 209057314 U CN209057314 U CN 209057314U CN 201822150286 U CN201822150286 U CN 201822150286U CN 209057314 U CN209057314 U CN 209057314U
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Abstract
The utility model discloses a kind of satellite optical receiver circuit with dual output, comprising: AGC control circuit, photoelectric conversion circuit, level-one amplifying circuit, variable attenuation circuit and main signal output circuit;The photoelectric conversion circuit, level-one amplifying circuit and variable attenuation circuit are sequentially connected;It further include signal distribution circuit and detection signal output apparatus;The signal input part of the signal distribution circuit connects variable attenuation circuit;The first via signal output end of the signal distribution circuit connects main signal output circuit;The second road signal output end connecting detection signal output end of the signal distribution circuit.On the one hand the broadband signal that can receive CATV and satellite television, provides richer program resource;On the other hand, have signal distribution circuit, and by detection signal output apparatus output detection signal, detect specific output signal for maintenance personnel, can more directly judge the working condition of photoreceiver in detail.
Description
Technical field
The utility model belongs to photoreceiver components, especially a kind of satellite optical receiver circuit with dual output.
Background technique
Traditional CATV and satellite L-Band is that two different modes are transmitted, and the bandwidth of operation of CATV is 47-860MHz, is defended
The bandwidth of operation 950-2150MHz of star L-Band.In order to reduce the cost of operator, propose CATV and satellite L-Band same
The transmission mode of optical fiber link.It is a kind of with the satellite photoreceiver that can receive wider range bandwidth therefore, it is necessary to research and develop, it uses
It is provided in the broadband signal for receiving CATV and satellite L-Band while reducing the cost of operator for user richer
Program resource.
On the one hand existing photoreceiver cannot receive the broadband signal of CATV and satellite television simultaneously;On the other hand, light
Receiver only has status indicator lamp, checks for maintenance personnel, to recognize the working condition of photoreceiver, for the ease of maintenance and
Maintenance, satellite photoreceiver should have the port that can detecte, and detect specific output signal for maintenance personnel, can be more straight
The working condition of photoreceiver is judged in detail.
Summary of the invention
The purpose of this utility model is that: in view of the above problems, a kind of satellite light with dual output is provided and is connect
Electromechanical road is received, which works in the bandwidth of 47~2400MHz, and output level with higher;Simultaneously
It is also equipped with the port that can detecte, detects specific output signal for maintenance personnel, can more directly judge photoreceiver in detail
Working condition.
The technical solution adopted in the utility model is as follows:
A kind of satellite optical receiver circuit with dual output, comprising: AGC control circuit, photoelectric conversion circuit, level-one are put
Big circuit, variable attenuation circuit and main signal output circuit;The photoelectric conversion circuit, level-one amplifying circuit and variable attenuation electricity
Road is sequentially connected;
It further include signal distribution circuit and detection signal output apparatus;The signal input part of the signal distribution circuit connects
Variable attenuation circuit;The first via signal output end of the signal distribution circuit connects main signal output circuit;The signal point
Second road signal output end connecting detection signal output end with circuit.
Preferably, the signal distribution circuit, comprising: resistance R10, resistance R11 and resistance R12;Resistance R10 and resistance
One end of R11 connects, while connecting variable attenuation circuit between resistance R10 and resistance R11;Resistance R10's and resistance R11 is another
End is separately connected the both ends of resistance R12;One end of resistance R10 connects main signal output circuit;One end connecting detection of resistance R11
Signal output end.
Preferably, the signal distribution circuit, further includes: adjustable resistance W, inductance L16 and capacitor C56;The one of inductance L16
One end of end connection resistance R10, the other end are grounded by capacitor C56, are grounded further through adjustable resistance W.
Preferably, the main signal output circuit, comprising: capacitor C17, capacitor C18, resistance R14, resistance R15, resistance
R16, diode D2, diode D3 and out connector RFOUT1;1 foot of out connector RFOUT1 pass sequentially through capacitor C18,
Resistance R16, resistance R14, capacitor C17 connection signal distributor circuit first via signal output end;Between resistance R14 and resistance 16
It is grounded by resistance R15, while connecting 3 feet of diode D2 again;1 foot and 2 feet of diode D2 is separately connected the 1 of diode D3
Foot and 2 feet;3 feet of diode D3 are grounded.
Preferably, the detection signal output apparatus, comprising: capacitor C21, capacitor C49, resistance R17, resistance R18, resistance
R19, diode D4, diode D5 and out connector RFOUT2;1 foot of out connector RFOUT2 pass sequentially through capacitor C49,
Resistance R19, resistance R17, capacitor C21 connection signal distributor circuit second road signal output end;Between resistance R17 and resistance 19
It is grounded by resistance R18, while connecting 3 feet of diode D4 again;1 foot and 2 feet of diode D4 is separately connected the 1 of diode D5
Foot and 2 feet;3 feet of diode D5 are grounded.
Preferably, the satellite optical receiver circuit further includes DC/DC circuit;What the DC/DC circuit was used to input
12V DC power supply is converted to 5V DC voltage, is the AGC control circuit, photoelectric conversion circuit, level-one amplifying circuit, can be changed
Attenuator circuit and signal distribution circuit power supply.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, on the one hand the satellite optical receiver circuit of the utility model supports the optical power of input 47~2400MHz bandwidth
Signal can be used for receiving the broadband signal of CATV and satellite television, provide richer program resource;On the other hand, has letter
Number distributor circuit, and by detection signal output apparatus output detection signal, specific output signal is detected for maintenance personnel, it can
More directly to judge the working condition of photoreceiver in detail.
2, circuit structure of the invention is simple, low in cost.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the satellite optical receiver circuit structure chart with dual output of the utility model.
Fig. 2 is the DC/DC circuit diagram of the utility model.
Fig. 3 a-3b is the AGC electric operation control circuit figure of the utility model.
Fig. 4 is the photoelectric conversion circuit figure of the utility model.
Fig. 5 is the level-one amplification circuit diagram of the utility model.
Fig. 6 is the variable attenuation circuit figure of the utility model.
Fig. 7 is the signal distribution circuit figure of the utility model.
Fig. 8 is the main signal output circuit figure of the utility model.
Fig. 9 is the detection signal output apparatus figure of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model, i.e., the described embodiments are only a part of the embodiments of the utility model,
Instead of all the embodiments.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be with each
Different configurations is planted to arrange and design.Therefore, the detailed of the embodiments of the present invention provided in the accompanying drawings is retouched below
The range for being not intended to limit claimed invention is stated, but is merely representative of the selected embodiment of the utility model.
Based on the embodiments of the present invention, those skilled in the art are obtained all without making creative work
Other embodiments are fallen within the protection scope of the utility model.
The feature of the utility model and performance are described in further detail with reference to embodiments.
Embodiment 1
A kind of satellite optical receiver circuit with dual output provided in this embodiment, as shown in Figure 1, comprising: AGC control
Circuit, photoelectric conversion circuit, level-one amplifying circuit, variable attenuation circuit and main signal output circuit;The photoelectric conversion circuit,
Amplifying circuit and variable attenuation circuit are sequentially connected;It further include signal distribution circuit and detection signal output end;The signal point
Signal input part with circuit connects variable attenuation circuit;The first via signal output end of the signal distribution circuit connects main letter
Number output circuit;The second road signal output end connecting detection signal output end of the signal distribution circuit.
After photoelectric conversion circuit receives the optical power signals of CATV and satellite L-Band and is converted into radiofrequency signal, it is sent to
Level-one amplifying circuit, amplified signal are sent to variable attenuation circuit, and the signal after decaying passes through signal distribution circuit
It is divided into two-way radiofrequency signal: is exported all the way for main signal output circuit;Another way is for detecting signal output apparatus output.?
When amplifying circuit amplifies, optical power currently entered is sampled by AGC control circuit, and according to the input light function of sampling
The size output pwm signal of rate adjusts the control voltage of attenuator circuit, guarantees to provide conjunction for subsequent conditioning circuit to variable attenuation circuit
The signal of suitable output size, to realize the accurate control function of AGC.
Satellite optical receiver circuit simultaneously further include: DC/DC circuit;Using the DC/DC circuit connection external electrical of low noise
Source is the power supply of other function circuit, reduces the interference to other function circuit.
The structure and working principle of entire satellite optical receiver circuit are described in detail below:
(1) DC/DC circuit
As shown in Fig. 2, a kind of DC/DC circuit provided in this embodiment, specifically includes that electric connector DC12VIN, diode
D8, diode D9, capacitor C23, capacitor C24, capacitor C25, capacitor C26, capacitor C27, capacitor C28, capacitor C29, direct current conversion
Module U1, diode D10, inductance L1, resistance R32, resistance R31, capacitor C33, capacitor C34, capacitor C35, capacitor C36, capacitor
C37 and capacitor C38;The positive input of electric connector DC12VIN terminates 12V power supply;The negative input end of diode D8, diode D9
Positive input terminal and capacitor C23, capacitor C24, capacitor C25 and one end of capacitor C26 connect the just defeated of electric connector DC12VIN
Enter end;The end G of electric connector DC12VIN and the end gnd ground connection, the positive input terminal of diode D8 and capacitor C23, capacitor C24,
The other end of capacitor C25 and capacitor C26 ground connection;The voltage input end of the negative input end connection DC conversion modules U1 of diode D9
1 foot of (1 foot), DC conversion modules U1 is grounded by capacitor C27, capacitor C28 and capacitor C29;4 feet of DC conversion modules U1
Vacantly, 5 feet, 6 feet, 7 feet and 8 feet ground connection;One end of feedback end (3 foot) the connection resistance R31 of DC conversion modules U1, resistance
Output end of the other end of R31 as DC/DC circuit exports 5V as the power supply of other function circuit;The other end of resistance R31 connects
The positive input terminal of diode D10;The voltage output end (2 foot) of the negative input end connection DC conversion modules of diode;Inductance L1
It is connected in parallel on the both ends of resistance R31;Resistance R32, resistance R31, capacitor C33, capacitor C34, capacitor C35, capacitor C36, capacitor C37 and
One end of capacitor C38 is grounded, and the other end connects the other end of resistance R31.
Wherein, diode D8 is TVS protection diode, prevents the component of the excessively high damage subsequent conditioning circuit of input voltage, especially
It is reversal connection power supply, and the peak voltage powered suddenly.Diode D9 guarantees that the 12V voltage of input is DC conversion modules U1
1 foot (voltage input end) unidirectionally power, prevent electric current from playing a reversed role;
Capacitor C23, capacitor C24, capacitor C25, capacitor C26, capacitor C27, capacitor C28 and capacitor C29 are as low frequency filtering
Circuit prevents low-frequency disturbance;Inductance L1, capacitor C33, capacitor C34, capacitor C35, capacitor C36, capacitor C37 and capacitor C38 conduct
Resonator filter circuit;
The feedback end (3 foot) of DC conversion modules U1 divides circuit by external resistance R31 and resistance R32, for examining
Survey and adjust output voltage.
DC conversion modules U1 is the DC conversion modules of low switching frequency, preferably, the DC power supplier U1
Switching frequency≤200KHz, can choose XL1509.
(2) AGC control circuit
As best shown in figures 3 a and 3b, AGC control circuit provided in this embodiment specifically includes that MCU, MCU select new pool science and technology
T84F16T20;And
Optical power sample circuit specifically includes that capacitor C49, capacitor C50, amplifier U2B, resistance R22, resistance R23 and electricity
Hinder R24;The optical power output end of the positive input connection photoelectric conversion circuit of amplifier U2B, and be grounded by capacitor C49;
The reverse input end of amplifier U2B is grounded by resistance R22;The output end of amplifier U2B passes through resistance R23 and its reversed input
End connection;The output end of amplifier U2B passes through the optical power sampling end (20 foot) of resistance R24 connection MCU (U5);
AGC signal follows circuit, comprising: capacitor C52, capacitor C53, capacitor C56, resistance R27, resistance R28, resistance R29
With amplifier U2A;The AGC signal output end (1 foot) of MCU (U5) connects one end of resistance R27 and resistance R28 simultaneously;Resistance R27
The other end ground connection;The positive input of resistance R28 connection amplifier U2A, and pass through capacitor C52 and capacitor C53 capacity earth;
The output end of amplifier U2A is connect with its reverse input end, and is grounded by capacitor C56;Meanwhile the output end of amplifier U2A
Pass through the AGC control signal input of capacitor R29 connection variable attenuation circuit;
The input optical power values of acquisition are sent into the optical power sampling end of MCU (U5) after the amplification of optical power sample circuit
(20 foot);Input optical power values according to the spacing of 0.5dBm, are carried out+3dBm~-7dBm input optical power values by MCU with it
The scheme of comparison of tabling look-up is corresponded and is carried out in the way of the corresponding 20dB pad value of+3dBm to the corresponding 0dB pad value of -7dBm
Pwm signal output, pwm signal are the digital signal of different duty, follow circuit to amplify and filter using AGC signal and export
AGC controls signal.
The AGC control circuit, further includes reset circuit;The reset circuit includes: resistance R25, resistance R26 and capacitor
C51;The reset terminal (4 foot) of MCU passes sequentially through resistance R25 and connects 5V DC voltage with resistance R26;Resistance R25 and resistance R26 it
Between be grounded by capacitor C51;
The AGC control circuit further includes state circuit for lamp;The state circuit for lamp include: resistance R33, resistance R35 and
Dual-colored LED lamp;By resistance R33 connection 5V DC voltage, green light signals end (2 foot) passes through the power end (1 foot) of dual-colored LED lamp
18 feet of resistance R35 connection MCU (U5), red signal end (3 foot) connect 17 feet of MCU (U5);By 17 feet of MCU (U5) and
18 feet export the bright light color of control signal control dual-colored LED lamp respectively, for the size according to the input optical power values of sampling
Range is alarmed, and judges whether to work normally, if the model that the input optical power values of sampling do not record in the table tabled look-up
In enclosing, then red alarm is shown, otherwise show that green light indicates to work normally.
(3) photoelectric conversion circuit
As shown in figure 4, the photoelectric conversion circuit, comprising: capacitor C1, capacitor C3, capacitor C4, capacitor C38, capacitor C39,
Photodetector PIN-IN, inductance L2, resistance R1 and resistance R2;Photodetector PIN-IN ground terminal ground connection, cathode connection
5V DC voltage is grounded further through capacitor C38, capacitor C39, and anode is grounded by capacitor C1, and connects level-one amplifying circuit,
Simultaneously further through optical power input terminal (the positive input of amplifier U2B of inductance L2, resistance R2 connection optical power sample circuit
End);Inductance L2 is grounded by resistance R1;The both ends of resistance R2 pass through capacitor C3 and capacitor C4 ground connection respectively;
Photodetector PIN-IN selects O-Send OPD-1-4-C-P-SC, receives the light function of CATV and satellite L-Band
Rate signal is simultaneously converted into after radiofrequency signal output to level-one amplifying circuit, meanwhile, pass through inductance L2, resistance R1, resistance R2, capacitor
The load branch of C3 and capacitor C4 composition is exported to the optical power sample circuit of AGC control circuit.Capacitor C38 and capacitor C39 are
The 5V DC voltage of input provides filter action.
(4) level-one amplifying circuit
As shown in figure 5, the level-one amplifying circuit, comprising: amplifier U4, inductance L2, inductance L4, capacitor C2, capacitor C40
With capacitor C41;The input terminal of amplifier U4 passes through the RF signal input end (photodetection of capacitor C2 connection photoelectric conversion circuit
The anode of device PIN-IN), output end connects one end of inductance L3;The other end of inductance L3 connects variable attenuation circuit, simultaneously
One end of inductance L4 is connected again;The other end of inductance L4 connects 5V DC voltage, while connecing further through capacitor C40 and capacitor C41
Ground.
The radiofrequency signal progress first order amplification that level-one amplifying circuit exports photoelectric conversion circuit, gain amplifier 20db,
So that subsequent conditioning circuit is handled.Capacitor C40 and capacitor C41 provides filter action for the 5V DC voltage of input.
(5) variable attenuation circuit
As shown in fig. 6, the variable attenuation circuit, comprising: π type diode, and it is connected to the AGC control of π type diode
Signal input circuit, radiofrequency signal input circuit, radiofrequency signal output circuit and pad value reference circuit processed;The AGC control
The AGC signal of signal input circuit connection AGC control circuit follows circuit;The radiofrequency signal input circuit connection level-one amplification
Circuit;The radiofrequency signal output circuit connection signal distributor circuit;Specifically, the variable attenuation circuit, comprising: π type two
Pole pipe D1, capacitor C5, capacitor C6, capacitor C7, capacitor C8, capacitor C9, capacitor C10, capacitor C11, capacitor C42, capacitor C55, electricity
Hinder R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9 and inductance L17;1 foot of π type diode D1 passes through
Capacitor C11 connection signal distributor circuit;2 feet of π type diode D1 are grounded by capacitor C55 and capacitor C6, and connect AGC control
The AGC signal output end of circuit;3 feet of π type diode D1 pass through capacitor C5 connection level-one amplifying circuit;The 4 of π type diode D1
Foot is grounded by capacitor C7, and connects one end of resistance R5;5 feet of π type diode D1 are grounded by capacitor C8, and connect resistance
One end of R6;The other end of resistance R5 and resistance R6 are grounded by capacitor C9 and capacitor C10;Meanwhile the other end of resistance R6 connects
One end of connecting resistance R7;The other end of resistance R7 is grounded by resistance R8, further through resistance R9 connection 5V DC voltage;Resistance R9
One end of connection 5V DC voltage also passes through capacitor C42 and is grounded;
Wherein, the model HMSP3816 of π type diode D1 is made of 4 diodes;The variable attenuation circuit connects
The AGC for receiving the output of AGC control circuit controls signal, and the control voltage by controlling π type diode D1 adjusts variable attenuation circuit
Pad value, provide sizeable radiofrequency signal for subsequent conditioning circuit.Wherein, resistance R3 and resistance R4 is π type diode D1's
Load resistance;Resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, capacitor C9, capacitor C10 and capacitor C42 form itself and decline
Depreciation control circuit controls itself pad value 3db of variable attenuation circuit;Capacitor C55, capacitor C6 and inductance L17 are controlled as AGC
The filter circuit of signal processed.
(6) signal distribution circuit
As shown in fig. 7, the signal distribution circuit, comprising: adjustable resistance W, inductance L16, capacitor C56, resistance R10, electricity
Hinder R11 and resistance R12;Resistance R10 is connected with one end of resistance R11, while variable decline is connected between resistance R10 and resistance R11
Powered down road;The other end of resistance R10 and resistance R11 are separately connected the both ends of resistance R12;One end of resistance R10 connects inductance L16
One end, while connecting main signal output circuit;The other end of inductance L16 is grounded by capacitor C56, further through adjustable resistance W
Ground connection;One end connection detection circuit of resistance R11;
The resistance combination method of salary distribution that the signal distribution circuit is formed using resistance R10, resistance R11 and resistance R12, will
The radiofrequency signal all the way of variable attenuation circuit output is divided into two-way radiofrequency signal;Wherein, by the other end of resistance R10 as
Output end all the way, by the other end of resistance R11 as the second road output end;The radiofrequency signal of the first via output end passes through
The output of main signal output circuit is main output signal RF1;The radiofrequency signal of second road output end output passes through detection output
Circuit output is detection signal RF2.
(7) main signal output circuit
As shown in figure 8, the main signal output circuit, comprising: capacitor C17, capacitor C18, resistance R14, resistance R15, electricity
Hinder R16, diode D2, diode D3 and out connector RFOUT1;1 foot of out connector RFOUT1 passes sequentially through capacitor
C18, resistance R16, resistance R14, capacitor C17 connection signal distributor circuit first via signal output end;Resistance R14 and resistance 16
Between be grounded by resistance R15, while again connect diode D2 3 feet;1 foot and 2 feet of diode D2 is separately connected diode
1 foot and 2 feet of D3;3 feet of diode D3 are grounded;
The main signal output circuit prevents the excessively high damage of moment main signal levels from putting by diode D2 and diode D3
Large chip.
(8) signal output apparatus is detected
As shown in figure 9, the detection signal output apparatus, comprising: capacitor C21, capacitor C49, resistance R17, resistance R18,
Resistance R19, diode D4, diode D5 and out connector RFOUT2;1 foot of out connector RFOUT2 passes sequentially through capacitor
C49, resistance R19, resistance R17, capacitor C21 connection signal distributor circuit second road signal output end;Resistance R17 and resistance 19
Between be grounded by resistance R18, while again connect diode D4 3 feet;1 foot and 2 feet of diode D4 is separately connected diode
1 foot and 2 feet of D5;3 feet of diode D5 are grounded;
The working principle of the detection signal output apparatus passes through diode D4 and diode with main signal output circuit
D5 prevents the excessively high damage amplification chip of moment detection signal level.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (6)
1. a kind of satellite optical receiver circuit with dual output, comprising: AGC control circuit, photoelectric conversion circuit, level-one amplification
Circuit, variable attenuation circuit and main signal output circuit;The photoelectric conversion circuit, level-one amplifying circuit and variable attenuation circuit
It is sequentially connected;It is characterized in that, further including signal distribution circuit and detection signal output apparatus;The letter of the signal distribution circuit
Number input terminal connects variable attenuation circuit;The first via signal output end connection main signal output electricity of the signal distribution circuit
Road;The second road signal output end connecting detection signal output end of the signal distribution circuit.
2. satellite optical receiver circuit as described in claim 1, which is characterized in that the signal distribution circuit, comprising: resistance
R10, resistance R11 and resistance R12;Resistance R10 is connected with one end of resistance R11, while being connected between resistance R10 and resistance R11
Variable attenuation circuit;The other end of resistance R10 and resistance R11 are separately connected the both ends of resistance R12;One end of resistance R10 connects
Main signal output circuit;One end connecting detection signal output end of resistance R11.
3. satellite optical receiver circuit as claimed in claim 2, which is characterized in that the signal distribution circuit, further includes: can
Adjust resistance W, inductance L16 and capacitor C56;One end of one end connection resistance R10 of inductance L16, the other end are connect by capacitor C56
Ground is grounded further through adjustable resistance W.
4. satellite optical receiver circuit as described in claim 1, which is characterized in that the main signal output circuit, comprising: electricity
Hold C17, capacitor C18, resistance R14, resistance R15, resistance R16, diode D2, diode D3 and out connector RFOUT1;It is defeated
1 foot of connector RFOUT1 passes sequentially through capacitor C18, resistance R16, resistance R14, capacitor C17 connection signal distributor circuit out
First via signal output end;It is grounded between resistance R14 and resistance 16 by resistance R15, while connecting 3 feet of diode D2 again;
1 foot and 2 feet of diode D2 is separately connected 1 foot and 2 feet of diode D3;3 feet of diode D3 are grounded.
5. satellite optical receiver circuit as described in claim 1, which is characterized in that the detection signal output apparatus, comprising:
Capacitor C21, capacitor C49, resistance R17, resistance R18, resistance R19, diode D4, diode D5 and out connector RFOUT2;
1 foot of out connector RFOUT2 passes sequentially through capacitor C49, resistance R19, resistance R17, capacitor C21 connection signal distributor circuit
Second road signal output end;It is grounded between resistance R17 and resistance 19 by resistance R18, while connecting the 3 of diode D4 again
Foot;1 foot and 2 feet of diode D4 is separately connected 1 foot and 2 feet of diode D5;3 feet of diode D5 are grounded.
6. satellite optical receiver circuit as described in claim 1, which is characterized in that further include DC/DC circuit;The DC/DC
Circuit is used to the 12V DC power supply of input being converted to 5V DC voltage, is the AGC control circuit, photoelectric conversion circuit, one
Grade amplifying circuit, variable attenuation circuit and signal distribution circuit power supply.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201822150286.8U CN209057314U (en) | 2018-12-20 | 2018-12-20 | A kind of satellite optical receiver circuit with dual output |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201822150286.8U CN209057314U (en) | 2018-12-20 | 2018-12-20 | A kind of satellite optical receiver circuit with dual output |
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Publication Number | Publication Date |
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CN209057314U true CN209057314U (en) | 2019-07-02 |
Family
ID=67055208
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CN201822150286.8U Active CN209057314U (en) | 2018-12-20 | 2018-12-20 | A kind of satellite optical receiver circuit with dual output |
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Address after: 618300 South Section 36 of Zhongshan Avenue, Guanghan City, Deyang City, Sichuan Province Patentee after: Sichuan BIHONG Electronic Information Technology Co., Ltd Address before: 618300 South Section 36 of Zhongshan Avenue, Guanghan City, Deyang City, Sichuan Province Patentee before: SICHUAN BIHONG BROADCAST & TV NEW TECHNOLOGY CO., LTD. |