CN201663655U - Bidirectional extension amplifier of cable television - Google Patents
Bidirectional extension amplifier of cable television Download PDFInfo
- Publication number
- CN201663655U CN201663655U CN2010201105440U CN201020110544U CN201663655U CN 201663655 U CN201663655 U CN 201663655U CN 2010201105440 U CN2010201105440 U CN 2010201105440U CN 201020110544 U CN201020110544 U CN 201020110544U CN 201663655 U CN201663655 U CN 201663655U
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- filter
- amplifier
- bidirectional
- frequency
- output
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- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The utility model relates to the field of cable television wide band networks, in particular to a bidirectional extension amplifier of a cable television, which sequentially consists of an RF input end, a first bidirectional filter, a second bidirectional filter and an RF output end. Due to the adoption of the above mentioned structure, the amplifier has the functions of preventing rain, water and electromagnetic interference, can be flexibly configured by a user according to a use condition, is convenient to upgrade and has the characteristics of high price ratio and reliability, convenient use and maintenance and the like.
Description
Technical field
The utility model relates to the cable TV network field, is specifically related to the two-way prolongation amplifier of a kind of cable TV.
Background technology
Continuous development along with information industry, requirement to information transfer channel is more and more higher, the bandwidth of hfc plant and popularization have its advantageous superiority, this at present other networks temporarily do not have, add the construction of HFC optical fiber backbone net and the continuous extension of optical node, the development that all is cable TV network has brought many chances, certainly to realize multi-media communications such as data, voice, image at cable TV on the net, at first will be with the network upgrade of existing One-to-All Broadcast formula for realizing the intelligent network of transmitted in both directions.
Summary of the invention
The purpose of this utility model provides the two-way prolongation amplifier of a kind of cable TV, and this amplifier can be used for the OUBN broadband network, multinomial medium communications such as transmission sound, image, data.
The two-way prolongation amplifier of a kind of cable TV, successively by rf inputs, first bidirectional filter, second bidirectional filter, radio-frequency (RF) output end is formed, described first bidirectional filter is connected a JXP integration module successively with the high go side (H end) of second bidirectional filter, the one EQ attenuation equalizer, the one AM forward amplitude modulation amplifier, the 2nd EQ attenuation equalizer, the frequency response adjuster, the 2nd JXP integration module, the 2nd AM forward amplitude modulation amplifier, be connected to the AGC high-frequency amplifier circuit between described the 2nd EQ attenuation equalizer output and the 2nd AM forward amplitude modulation amplifier out, described first bidirectional filter is connected the reverse amplitude modulation amplifier of AM successively with the low go side (L end) of second bidirectional filter, the 3rd JXP integration module, be connected in series first filter between described input and the output, first filter switch, second filter switch, second filter, the indirect 24V Switching Power Supply of described first filter and second filter, described second filter is in parallel with second filter switch and the 3rd filter, described the 3rd filter is connected in series the 3rd filter switch, described second filter and the 3rd filter output connect radio-frequency (RF) output end, and described second filter output also is connected to another radio-frequency (RF) output end.
Described input, two outputs all have radio frequency level and detect mouth, and interface mode is that the F head connects; Can effectively detect input, the output level of uplink and downlink passage.Has AC38～65V overcurrent indication, the break-make of whether normal and each power supply port of monitoring power supply at any time.The incoming level of adjusting amplifier makes its 65～75dBuv in the nominal incoming level scope of amplifier, is operated in optimum state to guarantee to amplify.
Described EQ attenuation equalizer, filter all adopt inserting mode to use, and wherein the EQ attenuation equalizer has fixing and adjustable two kinds of forms.
Described two-way prolongation amplifier external form is the pack alloy shell, has rainproof, waterproof, anti electromagnet interference function.
Owing to be provided with said structure, this amplifier is rainproof, waterproof, anti-electromagnetic interference, and the user is according to operating position, but flexible configuration and makes things convenient for the upgrading of product, has characteristics such as cost performance height, good reliability, working service be convenient.
Description of drawings
Fig. 1 is the circuit theory diagrams of the two-way prolongation amplifier of a kind of cable TV of the present utility model.
Embodiment
As shown in Figure 1, the two-way prolongation amplifier of a kind of cable TV, successively by rf inputs 1, first bidirectional filter 2, second bidirectional filter 3, radio-frequency (RF) output end 4 is formed, described first bidirectional filter 2 is connected a JXP integration module 31 successively with the high go side of second bidirectional filter 3, the one EQ attenuation equalizer 32, the one AM forward amplitude modulation amplifier 33, the 2nd EQ attenuation equalizer 34, frequency response adjuster 35, the 2nd JXP integration module 36, the 2nd AM forward amplitude modulation amplifier 37, be connected to AGC high-frequency amplifier circuit 38 between described the 2nd EQ attenuation equalizer output 34 and the 2nd AM forward amplitude modulation amplifier 37 outputs, described first bidirectional filter 2 is connected the reverse amplitude modulation amplifier 41 of AM successively with the low go side of second bidirectional filter 3, the 3rd JXP integration module 42, be connected in series first filter 21 between described input 1 and the output 4, first filter switch 22, second filter switch 23, second filter 24, described first filter 21 and second filter, 23 indirect 24V Switching Power Supplies 25, described second filter 24 is in parallel with second filter switch 23 and the 3rd filter 26, described the 3rd filter 26 serial connections the 3rd filter switch 27, described second filter 23 and the 3rd filter 26 output termination radio-frequency (RF) output end 4, described second filter, 24 outputs also are connected to another radio-frequency (RF) output end 49.Described input 1, two outputs 4,49 all have radio frequency level and detect mouth 61, and interface mode is that the F head connects; Can effectively detect input, the output level of uplink and downlink passage.Has AC38～65V overcurrent indication, the break-make of whether normal and each power supply port of monitoring power supply at any time.The incoming level of adjusting amplifier makes its 65～75dBuv in the nominal incoming level scope of amplifier, is operated in optimum state to guarantee to amplify.Described each EQ attenuation equalizer, filter all adopt inserting mode to use, and wherein the EQ attenuation equalizer has fixing and adjustable two kinds of forms.If being bimodulus piece PD, described two-way prolongation amplifier decontrols a distribution amplifier, be to recommend to amplify distribution, subscriber's amplifier during for single module, same series products has identical radio frequency mainboard, replaceable different amplification module, realize different broadbands such as 550MHZ, 750MHZ, 862MHZ, make things convenient for the upgrading of product.Described two-way prolongation amplifier external form is the pack alloy shell, has rainproof, waterproof, anti electromagnet interference function.
Claims (4)
1. two-way prolongation amplifier of cable TV, it is characterized in that: successively by rf inputs, first bidirectional filter, second bidirectional filter, radio-frequency (RF) output end is formed, described first bidirectional filter is connected a JXP integration module successively with the high go side (H end) of second bidirectional filter, the one EQ attenuation equalizer, the one AM forward amplitude modulation amplifier, the 2nd EQ attenuation equalizer, the frequency response adjuster, the 2nd JXP integration module, the 2nd AM forward amplitude modulation amplifier, be connected to the AGC high-frequency amplifier circuit between described the 2nd EQ attenuation equalizer output and the 2nd AM forward amplitude modulation amplifier out, the low go side of described first bidirectional filter and second bidirectional filter (
End) connects the reverse amplitude modulation amplifier of AM, the 3rd JXP integration module successively, be connected in series first filter, first filter switch, second filter switch, second filter between described input and the output, the indirect 24V Switching Power Supply of described first filter and second filter, described second filter is in parallel with second filter switch and the 3rd filter, described the 3rd filter is connected in series the 3rd filter switch, described second filter and the 3rd filter output connect radio-frequency (RF) output end, and described second filter output also is connected to another radio-frequency (RF) output end.
2. according to the two-way prolongation amplifier of the described a kind of cable TV of claim 1, it is characterized in that: described input, two outputs all have radio frequency level and detect mouth, and interface mode is that the F head connects.
3. according to the two-way prolongation amplifier of the described a kind of cable TV of claim 1, it is characterized in that: described EQ attenuation equalizer, filter all adopt inserting mode.
4. according to the two-way prolongation amplifier of the described a kind of cable TV of claim 1, it is characterized in that: described two-way prolongation amplifier external form is the pack alloy shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201105440U CN201663655U (en) | 2010-02-08 | 2010-02-08 | Bidirectional extension amplifier of cable television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201105440U CN201663655U (en) | 2010-02-08 | 2010-02-08 | Bidirectional extension amplifier of cable television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201663655U true CN201663655U (en) | 2010-12-01 |
Family
ID=43234072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201105440U Expired - Fee Related CN201663655U (en) | 2010-02-08 | 2010-02-08 | Bidirectional extension amplifier of cable television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201663655U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769238A (en) * | 2011-05-06 | 2012-11-07 | 成都联星微电子有限公司 | Communication cable extension method |
| CN108270412A (en) * | 2016-12-30 | 2018-07-10 | 中微半导体设备(上海)有限公司 | A kind of plasma processing apparatus and its radio frequency filter circuit |
-
2010
- 2010-02-08 CN CN2010201105440U patent/CN201663655U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769238A (en) * | 2011-05-06 | 2012-11-07 | 成都联星微电子有限公司 | Communication cable extension method |
| CN108270412A (en) * | 2016-12-30 | 2018-07-10 | 中微半导体设备(上海)有限公司 | A kind of plasma processing apparatus and its radio frequency filter circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FUJIAN SHITONG OPTOELECTRONIC NETWORK CO., LTD. Free format text: FORMER NAME: QUANZHOU CITY SHITONG OPTOELECTRONIC NETWORK CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Taihua road in Licheng District of Quanzhou City, Fujian Province, No. 1 362000 Patentee after: Fujian Shitong Optical Network Co., Ltd. Address before: Pass the lane of Licheng District of Quanzhou city in Fujian province 362000 No. 1 Building 3 layer 2-4 Patentee before: Quanzhou City Shitong Optoelectronic Network Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Taihua road in Licheng District of Quanzhou City, Fujian Province, No. 1 362000 Patentee after: FUJIAN ZHONGGENG SHITONG INFORMATION TECH CO LTD Address before: Taihua road in Licheng District of Quanzhou City, Fujian Province, No. 1 362000 Patentee before: Fujian Shitong Optical Network 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: 20101201 Termination date: 20160208 |