CN201479080U - Impedance conversion amplifier - Google Patents
Impedance conversion amplifier Download PDFInfo
- Publication number
- CN201479080U CN201479080U CN2009201691834U CN200920169183U CN201479080U CN 201479080 U CN201479080 U CN 201479080U CN 2009201691834 U CN2009201691834 U CN 2009201691834U CN 200920169183 U CN200920169183 U CN 200920169183U CN 201479080 U CN201479080 U CN 201479080U
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- module
- impedance
- matching
- amplifier
- photoelectric conversion
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Abstract
The utility model discloses a impedance conversion amplifier, which is characterized in that the amplifier comprises a photoelectric conversion module, a impedance matching module, a matching amplifier module and an electric power module; the photoelectric conversion module comprise an optical detector and an photoelectric diode for converting the inputted optical signal into microwave radio frequency signal output; an impedance matching module is connected in parallel with the optoelectric diode for converting the high impedance of the optoelectric diode to impedance of 50 ohm; the input end of the matching amplifying module is connected to the output end of the impedance matching module, for enhancing amplitude of microwave radio frequency obtained by conversion through the optoelectric diode; the power module is respective connected with the matching amplifying module and the optoelectric conversion module, for providing power to the matching amplifying module and the optoelectric conversion module. The impedance transforming amplifier can convert high impedance of the optical detection into low impedance desired in the signal amplifying processing unit. With such a invention, not only efficiency of photoelectric conversion is improved, but also the amplifier is excited to work on higher levels.
Description
Technical field
The utility model relates to communication technique field, is specifically related to a kind of impedance transformation amplifier.
Background technology
Impedance matching (Impedance matching) is the part in the microwave electronics, is mainly used in the microwave signal that transmission line reaches all high frequencies and all can reaches the purpose of POL, and do not have the signal reflex source point of returning, thereby promote source benefit.Substantially, impedance matching has dual mode to realize: a kind of is by changing resistance (lumped-circuit matching), another kind of then be the wavelength (transmission line matching) of adjustment transmission line.
General photo-detector impedance is all very high, and the input impedance of signal processing and amplifying part is 50 ohm substantially.For the small-signal that detector is produced all consumes in the impedance of self, just require input impedance and oneself coupling (preferably equating to obtain maximum power transfer like this) of signal processing and amplifying part.Impedance transformer is exactly to be used for the high impedance of detector is transformed to the low-impedance device that the signal processing and amplifying partly needs.Up to now, existing impedance transformer all is not very desirable.
The utility model content
Technical problem to be solved in the utility model is: how a kind of impedance transformation amplifier is provided, this impedance transformation amplifier can be transformed to the high impedance of photo-detector the Low ESR that the signal processing and amplifying partly needs, not only can improve photoelectric conversion efficiency, and can encourage it on higher frequency, to work.
For achieving the above object, the technical scheme that the utility model adopted is: a kind of impedance transformation amplifier is provided, it is characterized in that: comprise photoelectric conversion module, impedance matching module, coupling amplification module and power module; Described photoelectric conversion module includes photodetector and photodiode, is used for the light signal of input is converted to the output of microwave radio signal; The high impedance place of described photodiode is parallel with impedance matching module, is used for the high impedance of photodiode is transformed to 50 ohmages; The input of described coupling amplification module is connected with the output of impedance matching module, is used to improve the amplitude through the microwave radio signal of photodiode converts gained; Described power module is connected with coupling amplification module, photoelectric conversion module respectively, is used for providing power supply to coupling amplification module and photoelectric conversion module.
In sum, impedance transformation amplifier provided by the utility model can be transformed to the high impedance of photo-detector the Low ESR that the signal processing and amplifying partly needs, and not only can improve photoelectric conversion efficiency, and can encourage it to work on higher frequency.
Accompanying drawing and explanation thereof
Fig. 1 is the principle sketch of impedance transformation amplifier;
Fig. 2 is the structure diagram of impedance transformation amplifier.
Wherein, 1, photo-detector; 2, photodiode; 3, impedance matching module; 4, power module; 5, coupling amplification module.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in the figure, this impedance transformation amplifier comprises photoelectric conversion module, impedance matching module 3, coupling amplification module 5 and power module 4; Described photoelectric conversion module includes photodetector 1 and photodiode 2, is used for the light signal of input is converted to the output of microwave radio signal; The high impedance place of described photodiode 2 is parallel with impedance matching module 3, is used for the high impedance of photodiode 2 is transformed to 50 ohmages; The input of described coupling amplification module 5 is connected with the output of impedance matching module 3, is used to improve the amplitude through the microwave radio signal of photodiode 2 conversion gained; Described power module 4 is connected with coupling amplification module 5, photoelectric conversion module respectively, is used for providing power supply to coupling amplification module 5 and photoelectric conversion module.
Basic principle of the present utility model is: to photodiode 2, its impedance this moment is a high impedance to light signal through Optical Fiber Transmission; By changing this impedance conversion mode of resistance (promptly at photodiode 2 high impedance place parallel impedance matching modules 3), allow high impedance be transformed to needed 50 ohmages, export coupling amplification module 5 then after the opto-electronic conversion to, at last output.
Optical fiber be a kind of employing glass as waveguide, information is sent to the technology of the other end with the form of light from an end.The low-loss glass optical fiber of today is with respect to the transmission medium of early-stage development, be subjected to bandwidth constraints hardly and have unique advantage, but optical transmission also has shortcoming, along separate routes, coupling is cumbersome etc., in addition, the optical transmission frequency focuses mostly on now below 16GHz, is difficult to arrive 18GHz or higher, and uses suitable impedance transformer can improve operating frequency.Therefore, suitable impedance conversion amplification module not only can improve photoelectric conversion efficiency, and can encourage it to work on higher frequency.Therefore impedance matching module is the basis of optical transmission development, and arranged good development prospect.
But; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (1)
1. an impedance transformation amplifier is characterized in that: comprise photoelectric conversion module, impedance matching module, coupling amplification module and power module; Described photoelectric conversion module includes photodetector and photodiode, is used for the light signal of input is converted to the output of microwave radio signal; The high impedance place of described photodiode is parallel with impedance matching module, is used for the high impedance of photodiode is transformed to 50 ohmages; The input of described coupling amplification module is connected with the output of impedance matching module, is used to improve the amplitude through the microwave radio signal of photodiode converts gained; Described power module is connected with coupling amplification module, photoelectric conversion module respectively, is used for providing power supply to coupling amplification module and photoelectric conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201691834U CN201479080U (en) | 2009-08-19 | 2009-08-19 | Impedance conversion amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201691834U CN201479080U (en) | 2009-08-19 | 2009-08-19 | Impedance conversion amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201479080U true CN201479080U (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201691834U Expired - Fee Related CN201479080U (en) | 2009-08-19 | 2009-08-19 | Impedance conversion amplifier |
Country Status (1)
| Country | Link |
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| CN (1) | CN201479080U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346222A (en) * | 2011-06-09 | 2012-02-08 | 迈普通信技术股份有限公司 | Device, system and method for testing output electrical signals of optical interfaces |
| CN105245289A (en) * | 2015-09-30 | 2016-01-13 | 宁波环球广电科技有限公司 | Optical receiver without power supply |
| CN108173557A (en) * | 2018-03-01 | 2018-06-15 | 汽-大众汽车有限公司 | A kind of active matching network equipment |
| CN115833765A (en) * | 2023-02-21 | 2023-03-21 | 成都川美新技术股份有限公司 | Adjustable gain amplifier equipment |
-
2009
- 2009-08-19 CN CN2009201691834U patent/CN201479080U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346222A (en) * | 2011-06-09 | 2012-02-08 | 迈普通信技术股份有限公司 | Device, system and method for testing output electrical signals of optical interfaces |
| CN102346222B (en) * | 2011-06-09 | 2013-09-18 | 迈普通信技术股份有限公司 | Device, system and method for testing output electrical signals of optical interfaces |
| CN105245289A (en) * | 2015-09-30 | 2016-01-13 | 宁波环球广电科技有限公司 | Optical receiver without power supply |
| CN108173557A (en) * | 2018-03-01 | 2018-06-15 | 汽-大众汽车有限公司 | A kind of active matching network equipment |
| CN108173557B (en) * | 2018-03-01 | 2023-09-26 | 一汽-大众汽车有限公司 | Active matching network device |
| CN115833765A (en) * | 2023-02-21 | 2023-03-21 | 成都川美新技术股份有限公司 | Adjustable gain amplifier equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20120819 |