CN204103867U - A kind of bi-directional relaying amplifier - Google Patents
A kind of bi-directional relaying amplifier Download PDFInfo
- Publication number
- CN204103867U CN204103867U CN201420445213.0U CN201420445213U CN204103867U CN 204103867 U CN204103867 U CN 204103867U CN 201420445213 U CN201420445213 U CN 201420445213U CN 204103867 U CN204103867 U CN 204103867U
- Authority
- CN
- China
- Prior art keywords
- duplexer
- eoc
- ovt
- program request
- amplifier
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The utility model discloses a kind of bi-directional relaying amplifier, comprise signal input part, two EOC duplexers, two OVT program request duplexers, two-way amplifier and signal output parts, wherein, the signal of signal input part input passes through an EOC duplexer, an OVT program request duplexer, two-way amplifier, the 2nd OVT program request duplexer and the 2nd EOC duplexer successively until signal output part exports, and is wherein interconnected between an EOC duplexer and the 2nd EOC duplexer.The utility model adds EOC and OVT program request duplexer in original two-way amplifier.The utility model can realize two-way interaction TV return data signal and forward enlarging function, can provide the gain of 22db.And 0-20db gain adjustment range can be carried out separately to the upper and lower level of return data.The utility model effectively can prevent thunderbolt simultaneously, the damage that instantaneous pressure or electrostatic cause equipment.
Description
Technical field
The utility model relates to cable TV communication amplifier, particularly a kind of bi-directional relaying amplifier.
Background technology
Use amplifier can only the downstream signal of transfer of unidirectional in current most of cable TV coaxial network, just transmitted in both directions can not be carried out through this amplifier for the data-signal in OVT two-way interaction TV (VOD) system, therefore need to increase a passive relay equipment on amplifier side, transmitted in both directions is carried out to data-signal.But carry out two-way interaction TV (VOD) business data transmission for employing superfrequency, bi-direction data signal cannot normal communication through multistage passive relay equipment, because network link loss is excessive.
Utility model content
Utility model object: for above-mentioned prior art Problems existing and deficiency, the purpose of this utility model is to provide a kind of being applicable to and adopts superfrequency to carry out the bi-directional relaying amplifier of two-way interaction television services transfer of data.
Technical scheme: for realizing above-mentioned utility model object, the technical solution adopted in the utility model is a kind of bi-directional relaying amplifier, comprise signal input part, two EOC duplexers, two OVT program request duplexers, two-way amplifier and signal output parts, wherein, the signal of signal input part input passes through an EOC duplexer, an OVT program request duplexer, two-way amplifier, the 2nd OVT program request duplexer and the 2nd EOC duplexer successively until signal output part exports, and is wherein interconnected between an EOC duplexer and the 2nd EOC duplexer.
Further, also comprise equipotential lightning protection circuit, described equipotential lightning protection circuit is separately positioned on described signal input part and signal output part.Effectively can prevent thunderbolt like this, the damage that instantaneous pressure or electrostatic cause equipment.
Beneficial effect: compared with prior art, the utility model adds EOC and OVT program request duplexer in original two-way amplifier.The utility model can realize two-way interaction TV return data signal and forward enlarging function, can provide the gain of 22db.And 0-20db gain adjustment range can be carried out separately to the upper and lower level of return data.The utility model effectively can prevent thunderbolt simultaneously, the damage that instantaneous pressure or electrostatic cause equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen within the application's claims limited range.
As shown in Figure 1, a kind of bi-directional relaying amplifier, comprise signal input part 1, two EOC duplexers, two OVT program request duplexers, two-way amplifier 4 and signal output parts 5, wherein, signal input part input signal successively by an EOC duplexer 21, an OVT program request duplexer 31, two-way amplifier 4, the 2nd OVT program request duplexer 32 and the 2nd EOC duplexer 22 until signal output part 5 exports.Equipotential lightning protection circuit 6 is equipped with at signal input part and signal output part.
As shown in Figure 2, one EOC duplexer comprises multiple electric capacity and inductance, one end of electric capacity C3 is connected with one end of inductance L 3, the other end of electric capacity C3 is connected with one end of electric capacity C4 and one end of inductance L 1 respectively, the other end of electric capacity C4 is connected with one end of L2 and electric capacity C5 one end respectively, the other end of electric capacity C5 is connected with an OVT program request duplexer, the other end of inductance L 1 is by ground connection after electric capacity C6, the other end of inductance L 2 is by ground connection after electric capacity C7, the other end of inductance L 3 respectively with one end of electric capacity C8, one end of inductance L 4 is connected with one end of electric capacity C19, the other end ground connection of electric capacity C8, the other end of inductance L 4 is connected with one end of electric capacity C20 and one end of inductance L 5 respectively with the other end of electric capacity C19, the other end ground connection of electric capacity C20, the other end of inductance L 5 is connected with the 2nd EOC duplexer by electric capacity C21.Wherein, an EOC duplexer is identical with the circuit that the 2nd EOC duplexer adopts.
One OVT program request duplexer comprises multiple electric capacity, inductance and a SMA binding post, one end of inductance L 16 is connected with one end of an EOC duplexer and electric capacity C8 respectively, the other end of inductance L 16 respectively with one end of electric capacity 13, one end of inductance L 17 is connected with one end of electric capacity C14, the other end ground connection of electric capacity 13, the other end of inductance L 17 is connected with one end of inductance L 8 and one end of electric capacity C15 respectively with the other end of electric capacity C14, the other end of inductance L 8 is connected with two-way amplifier, the other end ground connection of electric capacity C15, the other end of electric capacity C8 is connected with one end of inductance L 9 and one end of electric capacity C10 respectively, the other end of inductance L 9 is by electric capacity C9 ground connection, the other end of electric capacity C10 is connected with one end of electric capacity C12 with one end of inductance L 10 respectively, the other end of L10 is by electric capacity C11 ground connection, the other end of electric capacity C12 is connected with SMA binding post.Wherein, an OVT program request duplexer is identical with the circuit that the 2nd OVT program request duplexer adopts.
The utility model, in original two-way amplifier, adds EOC and OVT program request duplexer, is divided into 5-65/87-860MHz/960-1.1G by mixing signal out.Wherein, 5-65MHz realizes broadband data service channel lie function to eoc signal, OVT program request duplexer by 87-860MHZ to TV user, 960-1.1G is two-way interaction passback frequency range, the inner integrated two-way switched amplifier module of OVT of relay equipment, the MCU control circuit system of high-quality and efficient power module is connected by SMA transition mast in OVT program request duplexer, like this common-frequency time division bi-direction data signal is switched, Bi-directional amplifier about 22dB, and gain reduction adjustment can be carried out to the signal of uplink and downlink respectively by uplink and downlink attenuator.
Claims (2)
1. a bi-directional relaying amplifier, it is characterized in that: comprise signal input part, two EOC duplexers, two OVT program request duplexers, two-way amplifier and signal output parts, wherein, the signal of signal input part input passes through an EOC duplexer, an OVT program request duplexer, two-way amplifier, the 2nd OVT program request duplexer and the 2nd EOC duplexer successively until signal output part exports, and is wherein interconnected between an EOC duplexer and the 2nd EOC duplexer.
2. bi-directional relaying amplifier according to claim 1, is characterized in that: also comprise equipotential lightning protection circuit, described equipotential lightning protection circuit is separately positioned on described signal input part and signal output part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445213.0U CN204103867U (en) | 2014-08-08 | 2014-08-08 | A kind of bi-directional relaying amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445213.0U CN204103867U (en) | 2014-08-08 | 2014-08-08 | A kind of bi-directional relaying amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204103867U true CN204103867U (en) | 2015-01-14 |
Family
ID=52272267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420445213.0U Expired - Fee Related CN204103867U (en) | 2014-08-08 | 2014-08-08 | A kind of bi-directional relaying amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204103867U (en) |
-
2014
- 2014-08-08 CN CN201420445213.0U patent/CN204103867U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 225000, Jiangsu Province, Guangling District, Yangzhou Province, Mao Road, IRS Road on the east side of 1 Patentee after: Mingxin intelligent optical communication (Jiangsu) Co., Ltd. Address before: 225000, Jiangsu District, Yangzhou City, Guangling Province town, Mao Tau Industrial Zone Patentee before: Yangzhou Ming Xin electrical equipment Cable Co., Ltd |
|
| 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: 20150114 Termination date: 20200808 |