CN205160535U - Optical receiver based on broadcasting and TV intelligent gateway system - Google Patents
Optical receiver based on broadcasting and TV intelligent gateway system Download PDFInfo
- Publication number
- CN205160535U CN205160535U CN201520986833.XU CN201520986833U CN205160535U CN 205160535 U CN205160535 U CN 205160535U CN 201520986833 U CN201520986833 U CN 201520986833U CN 205160535 U CN205160535 U CN 205160535U
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- CN
- China
- Prior art keywords
- photoelectric conversion
- optical receiver
- broadcasting
- conversion module
- intelligent gateway
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Abstract
The utility model discloses an optical receiver based on broadcasting and TV intelligent gateway system, its characterized in that: including optic fibre input port, photoelectric conversion module, impedance match module, preamplifier, balanced attenuator, push pull amplifier and the radio frequency output module who connects gradually, preamplifier for full gaAs MMIC amplifier, the photoelectric conversion module is the PIN photoelectric conversion pipe, the input of photoelectric conversion module still is connected with the electrostatic protection circuit, and its excellent performance satisfies the professional needs that develop of broadcasting and TV.
Description
Technical field
The utility model relates to optical receiver field, particularly, relates to a kind of optical receiver based on broadcasting and TV Intelligent gateway system.
Background technology
In fiber optic communication systems, the task of optical receiver is with minimum additional noise and distortion, recover the information entrained by light carrier after Optical Fiber Transmission, therefore the output characteristic concentrated expression performance of whole optical fiber telecommunications system of optical receiver.Under the promotion of the integration of three networks, CHINA RFTCOM Co Ltd flow needs the trend in the face of rapid growth, and this proposes challenge to service bearer network especially Access Network, and the IPization of network will be the key point of dealing with problems.On the one hand, from the process of networking, current unidirectional Cable net, IPQAM+ arrowband, IPQAM+ broadband are all out-of-date, although and two fibre is registered one's residence compatible high, cost is also high.While broadcasting and TV business development, require also more and more higher to the overall performance of optical receiver.
Utility model content
The utility model provides a kind of optical receiver based on broadcasting and TV Intelligent gateway system to solve the problems of the technologies described above, and its function admirable, meets the needs of broadcasting and TV business development.
The technical scheme in the invention for solving the above technical problem is:
Based on the optical receiver of broadcasting and TV Intelligent gateway system, it is characterized in that: comprise the optic fibre input end mouth, photoelectric conversion module, impedance matching module, preamplifier, balanced attenuator, push-pull amplifier and the radio frequency output module that connect successively, described preamplifier is full GaAs mmic amplifier, described photoelectric conversion module is PIN photoelectric conversion tube, and the input of described photoelectric conversion module is also connected with electrostatic discharge protection circuit.
The operation principle of the optical receiver of this programme is identical with the principle of existing optical receiver, only improves on the basis of existing technology.The gain of full GaAs mmic amplifier is high, distortion is low; The responsiveness of PIN photoelectric conversion tube is high, effectively can strengthen the overall performance of optical receiver, meet the needs of CHINA RFTCOM Co Ltd flow rapid growth.Optical receiver in the course of the work; its port is subject to the interference of electrostatic, connects electrostatic discharge protection circuit, release to the electrostatic acting on optic fibre input end mouth at the input of photoelectric conversion module; effectively optical receiver is protected, ensure its stability run.
As preferably, described electrostatic discharge protection circuit comprises the Transient Suppression Diode of ground connection.Utilize Transient Suppression Diode to release to electrostatic, when electrostatic interaction is in optic fibre input end mouth, its voltage increases, and Transient Suppression Diode transient switching can be released, and its reliability is high.
Further, described electrostatic discharge protection circuit also comprises ground capacity.Adopt its cushioning effect of ground capacity, contribute to releasing of electrostatic.
Further, also current-limiting resistance is connected with between described optic fibre input end mouth and photoelectric conversion module.The voltage of electrostatic is high, utilizes current-limiting resistance to carry out current limliting to electrostatic induced current, can protect internal components, avoids internal components to be subject to the destruction of high electric current.
To sum up, the beneficial effects of the utility model are:
1, preamplifier of the present utility model adopts full GaAs mmic amplifier, and photoelectric conversion module adopts PIN photoelectric conversion tube, effectively can strengthen the overall performance of optical receiver, meet the needs of CHINA RFTCOM Co Ltd flow rapid growth.
2, the input of photoelectric conversion module of the present utility model is connected with electrostatic discharge protection circuit, and electrostatic discharge protection circuit is released to the electrostatic acting on optic fibre input end mouth, and effective optical receiver is protected, and ensures its stability run.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment 1:
A kind of optical receiver based on broadcasting and TV Intelligent gateway system as shown in Figure 1, comprise the optic fibre input end mouth, photoelectric conversion module, impedance matching module, preamplifier, balanced attenuator, push-pull amplifier and the radio frequency output module that connect successively, described preamplifier is full GaAs mmic amplifier, described photoelectric conversion module is PIN photoelectric conversion tube, and the input of described photoelectric conversion module is also connected with electrostatic discharge protection circuit.
Embodiment 2:
A kind of optical receiver based on broadcasting and TV Intelligent gateway system as shown in Figure 1, the present embodiment has done refinement to electrostatic discharge protection circuit on the basis of above-described embodiment, and described electrostatic discharge protection circuit comprises the Transient Suppression Diode of ground connection.Certainly, electrostatic discharge protection circuit also can adopt other circuit structures.Adopt Transient Suppression Diode, while it plays reliable electrostatic leakage, volume is little, can not increase the load of optical receiver.
Described electrostatic discharge protection circuit also comprises ground capacity.
Also current-limiting resistance is connected with between described optic fibre input end mouth and photoelectric conversion module.The preferred Standard resistance range of current-limiting resistance is 200 ohm-1500 ohm.It is too large that the resistance of current-limiting resistance should not be chosen, and can increase the load of optical receiver; That also should not choose is too little, does not too littlely just have metering function.
As mentioned above, the utility model can be realized preferably.
Claims (4)
1. based on the optical receiver of broadcasting and TV Intelligent gateway system, it is characterized in that: comprise the optic fibre input end mouth, photoelectric conversion module, impedance matching module, preamplifier, balanced attenuator, push-pull amplifier and the radio frequency output module that connect successively, described preamplifier is full GaAs mmic amplifier, described photoelectric conversion module is PIN photoelectric conversion tube, and the input of described photoelectric conversion module is also connected with electrostatic discharge protection circuit.
2. the optical receiver based on broadcasting and TV Intelligent gateway system according to claim 1, is characterized in that: described electrostatic discharge protection circuit comprises the Transient Suppression Diode of ground connection.
3. the optical receiver based on broadcasting and TV Intelligent gateway system according to claim 2, is characterized in that: described electrostatic discharge protection circuit also comprises ground capacity.
4., according to the arbitrary described optical receiver based on broadcasting and TV Intelligent gateway system of claims 1 to 3, it is characterized in that: between described optic fibre input end mouth and photoelectric conversion module, be also connected with current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520986833.XU CN205160535U (en) | 2015-12-03 | 2015-12-03 | Optical receiver based on broadcasting and TV intelligent gateway system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520986833.XU CN205160535U (en) | 2015-12-03 | 2015-12-03 | Optical receiver based on broadcasting and TV intelligent gateway system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205160535U true CN205160535U (en) | 2016-04-13 |
Family
ID=55696174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520986833.XU Expired - Fee Related CN205160535U (en) | 2015-12-03 | 2015-12-03 | Optical receiver based on broadcasting and TV intelligent gateway system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205160535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105847733A (en) * | 2016-05-25 | 2016-08-10 | 北京中电宏业科技有限公司 | Totally-integrated optical receiver module |
-
2015
- 2015-12-03 CN CN201520986833.XU patent/CN205160535U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105847733A (en) * | 2016-05-25 | 2016-08-10 | 北京中电宏业科技有限公司 | Totally-integrated optical receiver module |
| CN105847733B (en) * | 2016-05-25 | 2019-01-11 | 北京中电宏业科技有限公司 | A kind of fully integrated optical receiver 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: 20160413 Termination date: 20191203 |