CN201298848Y - Broadband photoelectric conversion automatic gain control circuit structure - Google Patents
Broadband photoelectric conversion automatic gain control circuit structure Download PDFInfo
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- CN201298848Y CN201298848Y CNU2008202177913U CN200820217791U CN201298848Y CN 201298848 Y CN201298848 Y CN 201298848Y CN U2008202177913 U CNU2008202177913 U CN U2008202177913U CN 200820217791 U CN200820217791 U CN 200820217791U CN 201298848 Y CN201298848 Y CN 201298848Y
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Abstract
The utility model relates to a broadband photoelectric conversion automatic gain control circuit structure which has characteristics as follows: using a first integrate circuit singlechip for sampling to a light signal of a first photoelectric conversion diode, then obtaining the input light signal size by program calculating, the first integrated circuit singlechip outputs two groups of PWW signal, the output two groups of signal is amplified by a rectifier filter composed of a first integrated operational amplifier, a second integrated operational amplifier and a third integrated operational amplifier for controlling an electrically controlled attenuator composed by a first variable resistance diode and a second variable resistance diode to change the broadband signal gain that is amplified by the second broadband amplifier after the first photoelectric conversion diode photoelectric conversion. The structure provided by the utility model can attenuate broadband high frequency signal in wide range, control signal gain without manual control and increase equipment intelligent.
Description
Technical field
The utility model relates to a kind of broadband opto-electronic conversion automatic gain control circuit structure, single-chip microcomputer that specifically can be by voltage-controlled broadband electrically controlled attenuator combined belt PWM function, integrated operational amplifier etc. are finished the gain-adjusted to the broadband signal after the opto-electronic conversion, belong to components and parts electronic circuit technology field.
Background technology
At present, it is to adopt passive bridge T type attenuator or Π type attenuator that broadband signal after the opto-electronic conversion is carried out gain-adjusted circuit form commonly used, the attenuator of differential declines amount, the value that must change bridge T type attenuator or Π type attenuator could realize, so the attenuation that the limitation of sort circuit is to use must be unique, and can only carry out manual adjustments, can not realize attenuation continuous variable and regulate according to the size of input optical signal automatically.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, thereby provide a kind of broadband opto-electronic conversion automatic gain control circuit structure, single-chip microcomputer by voltage-controlled PIN variable resistor diode, band PWM output, after the input optical signal sampling, finish continuous variable decay to the broadband signal after the opto-electronic conversion, attenuation does not need the value of bridge T type attenuator or Π type attenuator by the PWM of single-chip microcomputer output decision, can finish the broadband signal continuous variable decay after the opto-electronic conversion.
According to the technical solution of the utility model, broadband opto-electronic conversion automatic gain control circuit structure adopts the crus secunda of the first opto-electronic conversion diode to connect the power supply VCC and first electric capacity, the other end ground connection of first electric capacity, the tripod ground connection of the first opto-electronic conversion diode, first pin of the first opto-electronic conversion diode connects first broadband and adjusts inductance, the other end of first broadband adjustment inductance connects a pin of first Impedance Match Transformer of Broad Band, two pin of first Impedance Match Transformer of Broad Band connect first sampling resistor, second resistance and second electric capacity, the other end ground connection of first sampling resistor and second electric capacity, the other end of second resistance connects the 12 pin of the 4th integrated operational amplifier, the tenth tripod of the 4th integrated operational amplifier connects the 3rd resistance and the 4th resistance, the other end ground connection of the 3rd resistance, the other end of the 4th resistance connects the 14 pin and the 5th resistance of the 4th integrated operational amplifier, the other end of the 5th resistance connects first pin of first potentiometer, the crus secunda ground connection of first potentiometer, the tripod of first potentiometer connects the 12 pin of the first integrated circuit single-chip microcomputer, the 4th pin of the first integrated circuit single-chip microcomputer connects first crystal oscillator and the 3rd electric capacity, the other end ground connection of the 3rd electric capacity, the other end of first crystal oscillator connects the 5th pin of the 4th electric capacity and the first integrated circuit single-chip microcomputer, the other end ground connection of the 4th electric capacity, the tenth pin ground connection of the first integrated circuit single-chip microcomputer, the 20 pin of the first integrated circuit single-chip microcomputer connects power supply VCC and the 20 electric capacity, the other end ground connection of the 20 electric capacity, the 9th pin of the first integrated circuit single-chip microcomputer connects the 13 resistance, the other end of the 13 resistance connects the 15 resistance and the 15 electric capacity, the other end of the 15 resistance connects the 5th pin of the 17 electric capacity and second integrated operational amplifier, the other end ground connection of the 17 electric capacity, the other end of the 15 electric capacity connects the 6th pin of second integrated operational amplifier, the 7th pin and the 17 resistance, the other end of the 17 resistance connects the 16 resistance and the 18 resistance, the other end of the 16 resistance connects first pin of first integrated operational amplifier, crus secunda and the 14 electric capacity, the other end of the 14 electric capacity connects the 12 resistance and the 14 resistance, the other end of the 12 resistance connects the 11 pin of the first integrated circuit single-chip microcomputer, the other end of the 14 resistance connects the tripod of the 16 electric capacity and first integrated operational amplifier, the other end ground connection of the 16 electric capacity, the 4th pin ground connection of first integrated operational amplifier, the 11 pin of first integrated operational amplifier connects power supply VCC1 and the 18 electric capacity, the other end ground connection of the 18 electric capacity, the other end of the 18 resistance connects the tenth pin of the 19 electric capacity and the 3rd integrated operational amplifier, the 19 electric capacity other end ground connection, the 9th pin of the 3rd integrated operational amplifier connects the 19 resistance and the 20 resistance, the 19 resistance other end ground connection, the other end of the 20 resistance connects the octal of the 3rd integrated operational amplifier, the 8th electric capacity and the 9th current-limiting resistance, the other end ground connection of the 8th electric capacity, the other end of the 9th current-limiting resistance connects first pin of the second adjustable resistance diode and the crus secunda of the first variable resistor diode, the tripod of the second adjustable resistance diode connects the 13 signal coupling capacitance and the 11 build-out resistor, and the other end of the 13 signal coupling capacitance connects radio frequency output, the other end ground connection of the 11 build-out resistor, the crus secunda of the second adjustable resistance diode connects the tenth current-limiting resistance and the 12 shunt capacitance, the 12 shunt capacitance other end ground connection, the tenth current-limiting resistance other end connects the 7th current-limiting resistance, the 11 electric capacity and the 8th current-limiting resistance, the other end of the 8th current-limiting resistance connects power supply VCC and the tenth electric capacity, the tenth electric capacity other end ground connection, the other end ground connection of the 11 electric capacity, the other end of the 7th current-limiting resistance connect first pin and the 9th shunt capacitance of the first variable resistor diode, the 9th shunt capacitance other end ground connection, the tripod of the first variable resistor diode connects the 7th signal coupling capacitance and the 6th build-out resistor, the other end ground connection of the 6th build-out resistor, the other end of the 7th signal coupling capacitance connect the tripod and second inductance of the second broadband signal amplifier, and the other end of second inductance connects power supply VCC and the 6th electric capacity, the other end ground connection of the 6th electric capacity, the crus secunda ground connection of the second broadband signal amplifier, first pin of second wide-band amplifier connects the 5th signal coupling capacitance, and the other end of the 5th signal coupling capacitance connects the tripod of first Impedance Match Transformer of Broad Band.
Compared with the prior art the utility model has the following advantages:
The utility model is simple and reasonable for structure, because the electrically controlled attenuator that adopts voltage-controlled PIN variable resistor diode to combine with the Single-chip Controlling of band PWM output, simultaneously by sampling to the input optical signal size, can realize according to the broadband signal after the automatic adjusting of the size opto-electronic conversion of input optical signal, and can improve control range greatly by the electrically controlled attenuator that adopts two-stage variable resistance diode to form.
Description of drawings
Fig. 1 is the utility model broadband opto-electronic conversion automatic gain control circuit components and parts connection layout.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
The utility model is mainly by the first opto-electronic conversion diode A1, inductance L 1 is adjusted in first broadband, the first Impedance Match Transformer of Broad Band T1, the first sampling resistor R1, the 5th signal coupling capacitance C5, the second broadband signal amplifier A2, the 7th signal coupling capacitance C7, the 6th build-out resistor R6, the first variable resistor diode D1, the 9th shunt capacitance C9, the 7th current-limiting resistance R7, the 8th current-limiting resistance R8, the tenth current-limiting resistance R10, the 12 shunt capacitance C12, the second adjustable resistance diode D2, the 9th current-limiting resistance R9, the 11 build-out resistor R11, the 13 signal coupling capacitance C11, the first integrated circuit single-chip microcomputer IC1, the first integrated operational amplifier IC2A, the second integrated operational amplifier IC2B, the 3rd integrated operational amplifier IC2C, compositions such as the 4th integrated operational amplifier IC2D.
The utility model mainly adopts the first opto-electronic conversion diode A1, two pin to connect the power supply VCC and first capacitor C 1, the other end ground connection of first capacitor C 1, the first opto-electronic conversion diode A1 tripod ground connection, the first opto-electronic conversion diode A1, one pin connects first broadband and adjusts inductance L 1 one ends, the other end of first broadband adjustment inductance L 1 connects the pin of the first Impedance Match Transformer of Broad Band T1, two pin of the first Impedance Match Transformer of Broad Band T1 connect the first sampling resistor R1, one end of second resistance R 2 and second capacitor C 2, the other end ground connection of the first sampling resistor R1 and second capacitor C 2, the other end of second resistance R 2 connects the 12 pin of the 4th integrated operational amplifier IC2D, the tenth tripod of the 4th integrated operational amplifier IC2D connects an end of the 3rd resistance R 3 and the 4th resistance R 4, the other end ground connection of the 3rd resistance R 3, the other end of the 4th resistance R 4 connects the 14 pin of the 4th integrated operational amplifier IC2D and an end of the 5th resistance R 5, the other end of the 5th resistance R 5 connects first pin of the first potentiometer W1, the crus secunda ground connection of the first potentiometer W1, the tripod of the first potentiometer W1 connects the 12 pin of the first integrated circuit single-chip microcomputer IC1, the 4th pin of the first integrated circuit single-chip microcomputer IC1 connects an end of the first crystal oscillator XT1 and the 3rd capacitor C 3, the other end ground connection of the 3rd capacitor C 3, the other end of the first crystal oscillator XT1 connects the 5th pin of the 4th capacitor C 4 and the first integrated circuit single-chip microcomputer IC1, the other end ground connection of the 4th capacitor C 4, the tenth pin ground connection of the first integrated circuit single-chip microcomputer IC1, the 20 pin of the first integrated circuit single-chip microcomputer IC1 connects an end of power supply VCC and the 20 capacitor C 20, the other end ground connection of the 20 capacitor C 20, the 9th pin of the first integrated circuit single-chip microcomputer IC1 connects an end of the 13 resistance R 13, the other end of the 13 resistance R 13 connects the 15 resistance R 15 and the 15 capacitor C 15, the 15 resistance R 15 connects the 5th pin of the 17 capacitor C 17 and the second integrated operational amplifier IC2B, the other end ground connection of the 17 capacitor C 17, the other end of the 15 C15 electric capacity connects the 6th pin of the second integrated operational amplifier IC2B, the 7th pin and the 17 resistance R 17, the other end of the 17 resistance R 17 connects the 16 resistance R 16 and the 18 resistance R 18, the other end of the 16 resistance R 16 connects first pin of the first integrated operational amplifier IC2A, crus secunda and the 14 capacitor C 14, the other end of the 14 capacitor C 14 connects the 12 resistance R 12 and the 14 resistance R 14, the other end of the 12 resistance R 12 connects the 11 pin of the first integrated circuit single-chip microcomputer IC1A, the other end of the 14 resistance R 14 connects the tripod of the 16 capacitor C 16 and the first integrated operational amplifier IC2A, the other end ground connection of the 16 capacitor C 16, the 4th pin ground connection of the first integrated operational amplifier IC2A, the 11 pin of the first integrated operational amplifier IC2A connects power supply VCC1 and the 18 capacitor C 18, the other end ground connection of the 18 capacitor C 18, the other end of the 18 resistance R 18 connects the tenth pin of the 19 capacitor C 19 and the 3rd integrated operational amplifier IC2C, the 19 capacitor C 19 other end ground connection, the 9th pin of the 3rd integrated operational amplifier IC2C connects an end of the 19 resistance R 19 and the 20 resistance R 20, the 19 resistance R 19 other end ground connection, the other end of the 20 resistance R 20 connects the octal of the 3rd integrated operational amplifier IC2C, the 8th capacitor C 8 and the 9th current-limiting resistance R9, the other end ground connection of the 8th capacitor C 8, the other end of the 9th current-limiting resistance R9 connect first pin of the second adjustable resistance diode D2 and the crus secunda of the first variable resistor diode D1, and the tripod of the second adjustable resistance diode D2 connects the 13 signal coupling capacitance C13 and the 11 build-out resistor R11, the other end of the 13 signal coupling capacitance C13 connects radio frequency output RFOUT, the other end ground connection of the 11 build-out resistor R11, the crus secunda of the second adjustable resistance diode D2 connects the tenth current-limiting resistance R10 and the 12 shunt capacitance C12, the 12 shunt capacitance C12 other end ground connection, the tenth current-limiting resistance R10 other end connects the 7th current-limiting resistance R7, the 11 capacitor C 11 and the 8th current-limiting resistance R8, the other end of the 8th current-limiting resistance R8 connects power supply VCC and the tenth capacitor C 10, the ten capacitor C 10 other end ground connection, the other end ground connection of the 11 capacitor C 11, the other end of the 7th current-limiting resistance R7 connects first pin and the 9th shunt capacitance C9 of the first variable resistor diode D1, the 9th shunt capacitance other end ground connection C9, the tripod of the first variable resistor diode D1 connects the 7th signal coupling capacitance C7 and the 6th build-out resistor R6, the other end ground connection of the 6th build-out resistor R6, the other end of the 7th signal coupling capacitance C7 connects the tripod and second inductance L 2 of the second broadband signal amplifier A2, the other end of second inductance L 2 connects the other end ground connection of power supply VCC and the 6th capacitor C 6, the six capacitor C 6, the crus secunda ground connection of the second broadband signal amplifier A2, first pin of the second wide-band amplifier A2 connects the 5th signal coupling capacitance C5, and the other end of the 5th signal coupling capacitance C5 connects the tripod of the first Impedance Match Transformer of Broad Band T1.
Operation principle of the present utility model:
After the utility model broadband opto-electronic conversion automatic gain control circuit is mainly sampled to the light signal of importing the first opto-electronic conversion diode A1 by the first integrated circuit single-chip microcomputer IC1, know the input optical signal size by program calculating, the first integrated circuit single-chip microcomputer IC1 exports two groups of pwm signals, two groups of pwm signals of output are via the first integrated operational amplifier IC2A, after the rectifying and wave-filtering that the second integrated operational amplifier IC2B and the 3rd integrated operational amplifier IC2C form amplifies, remove to control the electrically controlled attenuator of forming by the first variable resistor diode D1 and the second adjustable resistance diode D2, change the first opto-electronic conversion diode A1 opto-electronic conversion after the gain of the broadband signal of amplifying by the second wide-band amplifier A2, with realize according to after the size control opto-electronic conversion of input optical signal the purpose of broadband signal gain.
Claims (1)
1, a kind of broadband opto-electronic conversion automatic gain control circuit structure, it is characterized in that adopting the crus secunda of the first opto-electronic conversion diode (A1) to connect power supply (VCC) and first electric capacity (C1), first pin of the first opto-electronic conversion diode (A1) connects first broadband and adjusts inductance (L1) end, the other end of first broadband adjustment inductance (L1) connects first pin of first Impedance Match Transformer of Broad Band (T1), the crus secunda of first Impedance Match Transformer of Broad Band (T1) connects first sampling resistor (R1), one end of second resistance (R2) and second electric capacity (C2), the other end of second resistance (R2) connects the 12 pin of the 4th integrated operational amplifier (IC2D), the tenth tripod of the 4th integrated operational amplifier (IC2D) connects an end of the 3rd resistance (R3) and the 4th resistance (R4), the other end of the 4th resistance (R4) connects the 14 pin of the 4th integrated operational amplifier (IC2D) and an end of the 5th resistance (R5), the other end of the 5th resistance (R5) connects first pin of first potentiometer (W1), the tripod of first potentiometer (W1) connects the 12 pin of the first integrated circuit single-chip microcomputer (IC1), the 4th pin of the first integrated circuit single-chip microcomputer (IC1) connects an end of first crystal oscillator (XT1) and the 3rd electric capacity (C3), the other end of first crystal oscillator (XT1) connects the 5th pin of the 4th electric capacity (C4) and the first integrated circuit single-chip microcomputer (IC1), the 20 pin of the first integrated circuit single-chip microcomputer (IC1) connects an end of power supply (VCC) and the 20 electric capacity (C20), the 9th pin of the first integrated circuit single-chip microcomputer (IC1) connects an end of the 13 resistance (R13), the other end of the 13 resistance (R13) connects the 15 resistance (R15) and the 15 electric capacity (C15), the 15 resistance (R15) connects the 5th pin of the 17 electric capacity (C17) and second integrated operational amplifier (IC2B), the other end of the 15 (C15) electric capacity connects the 6th pin of second integrated operational amplifier (IC2B), the 7th pin and the 17 resistance (R17), the other end of the 17 resistance (R17) connects the 16 resistance (R16) and the 18 resistance (R18), the other end of the 16 resistance (R16) connects first pin of first integrated operational amplifier (IC2A), crus secunda and the 14 electric capacity (C14), the other end of the 14 electric capacity (C14) connects the 12 resistance (R12) and the 14 resistance (R14), the other end of the 12 resistance (R12) connects the 11 pin of the first integrated circuit single-chip microcomputer (IC1A), the other end of the 14 resistance (R14) connects the tripod of the 16 electric capacity (C16) and first integrated operational amplifier (IC2A), the 11 pin of first integrated operational amplifier (IC2A) connects power supply (VCC1) and the 18 electric capacity (C18), the other end of the 18 resistance (R18) connects the tenth pin of the 19 electric capacity (C19) and the 3rd integrated operational amplifier (IC2C), the 9th pin of the 3rd integrated operational amplifier (IC2C) connects the 19 resistance (R19) and the 20 resistance (R20), the other end of the 20 resistance (R20) connects the octal of the 3rd integrated operational amplifier (IC2C), the 8th electric capacity (C8) and the 9th current-limiting resistance (R9), the other end of the 9th current-limiting resistance (R9) connects first pin of the second adjustable resistance diode (D2) and the crus secunda of the first variable resistor diode (D1), the tripod of the second adjustable resistance diode (D2) connects the 13 signal coupling capacitance (C13) and the 11 build-out resistor (R11), the 13 signal coupling capacitance (C13) other end connects radio frequency output (RFOUT), the crus secunda of the second adjustable resistance diode (D2) connects the tenth current-limiting resistance (R10) and the 12 shunt capacitance (C12), the tenth current-limiting resistance (R10) other end connects the 7th current-limiting resistance (R7), the 11 electric capacity (C11) and the 8th current-limiting resistance (R8), the other end of the 8th current-limiting resistance (R8) connects power supply (VCC) and the tenth electric capacity (C10), the other end of the 7th current-limiting resistance (R7) connects first pin and the 9th shunt capacitance (C9) of the first variable resistor diode (D1), the tripod of the first variable resistor diode (D1) connects the 7th signal coupling capacitance (C7) and the 6th build-out resistor (R6), the other end of the 7th signal coupling capacitance (C7) connects the tripod and second inductance (L2) of the second broadband signal amplifier (A2), the other end of second inductance (L2) connects power supply (VCC) and the 6th electric capacity (C6), first pin of second wide-band amplifier (A2) connects the 5th signal coupling capacitance (C5), and the other end of the 5th signal coupling capacitance (C5) connects the tripod of Impedance Match Transformer of Broad Band (T1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202177913U CN201298848Y (en) | 2008-11-11 | 2008-11-11 | Broadband photoelectric conversion automatic gain control circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202177913U CN201298848Y (en) | 2008-11-11 | 2008-11-11 | Broadband photoelectric conversion automatic gain control circuit structure |
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| Publication Number | Publication Date |
|---|---|
| CN201298848Y true CN201298848Y (en) | 2009-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202177913U Expired - Fee Related CN201298848Y (en) | 2008-11-11 | 2008-11-11 | Broadband photoelectric conversion automatic gain control circuit structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762948A (en) * | 2013-12-24 | 2014-04-30 | 芯原微电子(上海)有限公司 | Complementary metal-oxide-semiconductor transistor (CMOS) radio frequency power amplifier integrated on system on chip |
| CN104506242A (en) * | 2014-12-25 | 2015-04-08 | 四川璧虹广播电视新技术有限公司 | AGC (automatic gain control) control method for management type household optical receiving machine |
| CN104506244A (en) * | 2014-12-25 | 2015-04-08 | 四川璧虹广播电视新技术有限公司 | AGC (automatic gain control) control circuit for management type household optical receiving machine |
| CN104506245A (en) * | 2014-12-25 | 2015-04-08 | 四川璧虹广播电视新技术有限公司 | ATT control method for management type household optical receiving machine |
| CN104617902A (en) * | 2014-12-16 | 2015-05-13 | 上海新纳通信技术有限公司 | Automatic cable television optical receiver gain control method by using light power |
| CN106341189A (en) * | 2016-09-14 | 2017-01-18 | 青岛海信宽带多媒体技术有限公司 | Optical module |
-
2008
- 2008-11-11 CN CNU2008202177913U patent/CN201298848Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762948A (en) * | 2013-12-24 | 2014-04-30 | 芯原微电子(上海)有限公司 | Complementary metal-oxide-semiconductor transistor (CMOS) radio frequency power amplifier integrated on system on chip |
| CN103762948B (en) * | 2013-12-24 | 2016-09-28 | 芯原微电子(上海)有限公司 | A kind of CMOS radio-frequency power amplifier being integrated in SOC(system on a chip) |
| CN104617902A (en) * | 2014-12-16 | 2015-05-13 | 上海新纳通信技术有限公司 | Automatic cable television optical receiver gain control method by using light power |
| CN104506242A (en) * | 2014-12-25 | 2015-04-08 | 四川璧虹广播电视新技术有限公司 | AGC (automatic gain control) control method for management type household optical receiving machine |
| CN104506244A (en) * | 2014-12-25 | 2015-04-08 | 四川璧虹广播电视新技术有限公司 | AGC (automatic gain control) control circuit for management type household optical receiving machine |
| CN104506245A (en) * | 2014-12-25 | 2015-04-08 | 四川璧虹广播电视新技术有限公司 | ATT control method for management type household optical receiving machine |
| CN104506242B (en) * | 2014-12-25 | 2018-02-06 | 向祖璧 | A kind of AGC control methods of management type family expenses photoreceiver |
| CN106341189A (en) * | 2016-09-14 | 2017-01-18 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN106341189B (en) * | 2016-09-14 | 2019-08-09 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20161111 |