CN203563085U - CMTS, low-frequency EOC and CATV signal compatible radiofrequency circuit - Google Patents
CMTS, low-frequency EOC and CATV signal compatible radiofrequency circuit Download PDFInfo
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- CN203563085U CN203563085U CN201320689054.4U CN201320689054U CN203563085U CN 203563085 U CN203563085 U CN 203563085U CN 201320689054 U CN201320689054 U CN 201320689054U CN 203563085 U CN203563085 U CN 203563085U
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Abstract
The utility model discloses a CMTS, low-frequency EOC and CATV signal compatible radiofrequency circuit which is characterized by comprising a first diplexer, a third diplexer, a second diplexer, a short-circuit device and an EOC local side. The first diplexer inputs CMTS and CATV signals; the third diplexer is connected with the first diplexer, and outputs CMTS, low-frequency EOC and CATV signals; the first diplexer is connected with the second diplexer via a high pass filter; the short-circuit device is connected between the second and third diplexers; and the EOC local side for inputting EOC signals is connected with the short-circuit device. The radiofrequency circuit is simple in structure and low in cost, and can transmit CMTS, low-frequency EOC and CATV signals so that the CMTS, low-frequency EOC and CATV signals can be compatibly transmitted; and at the same time, the radiofrequency circuit can rapidly switch signal transmission channels according to different application scenes, so that different using requirements are satisfied, and the radiofrequency circuit can be popularized.
Description
Technical field
The utility model relates to a kind of radio circuit, relates in particular to the radio circuit of a kind of compatible CMTS, low frequency EOC and CATV signal.
Background technology
Under the promotion of national integration of three networks development strategy, China's radio and television services have entered a new developing period, and the bidirectional rebuilding of CHINA RFTCOM Co Ltd is by imperative.On January 13rd, 2010, State Council holds standing meeting, determine to accelerate to advance telecommunications network, broadcasting and television network and the Internet integration of three networks, under the promotion of national integration of three networks development strategy, China's radio and television services have entered a new developing period, take two-way, interactive, cross-domain, intercommunication, multi-service, credible, can manage, development industry situation that the controlled broadcasting and television network of new generation as feature will innovation broadcasting and TV.
The General Office of the State Council has sent < < on June 30th, 2010 about printing and distributing the notice > > of first integration of three networks model regions (city) list, first integration of three networks model regions (city) list is come out of the stove, comprise Beijing, Daliang City, Liaoning Province, Harbin, Heilongjiang Province, Shanghai City, Nanjing, Hangzhou, Zhejiang province city, Xiamen City, Fujian Province, Qingdao of Shandong province, Wuhan City, Hubei Province, area, governor's strain pool, Hunan, Shenzhen City, Guangdong Province and Sichuan Province's Mianyang City, this indicates that integration of three networks pilot work formally starts.
Agenda has been put in the bidirectional rebuilding of broadcasting and TV broadband access network, because Fiber to the home, cost is also higher, still difficult large-area applying at present at home, the solution of " EPON+EOC " is one of cost performance two-way access solution high, that the most easily implement under the present situation of current CHINA RFTCOM Co Ltd.Some Domestic provinces and cities have disposed CMTS and CATV compatible system, low frequency EOC and CATV compatible system have been disposed in some area, if but in the network of disposing CMTS system, increase again low frequency EOC system, just exist CMTS up channel with the problem of the overlapping interference of low frequency EOC system.
Utility model content
The purpose of this utility model is to overcome increases low frequency EOC system at present in disposing CMTS grid again, just exist CMTS up channel with the defect of the overlapping interference of low frequency EOC system, provide a kind of not only simple in structure, and with low cost, can also compatible CMTS signal, low frequency eoc signal and CATV signal, and can be according to compatible CMTS, the low frequency EOC of the variation switching signal passage of application scenarios and the radio circuit of CATV signal.
The object of utility model is achieved through the following technical solutions:
The radio circuit of compatible CMTS, low frequency EOC and CATV signal, comprise access CMTS signal and CATV signal duplexer one, be connected with this duplexer one and export the duplexer three of CMTS signal, low frequency eoc signal and CATV signal, on described duplexer one, also by high pass filter, be connected with duplexer two, between described duplexer two and duplexer three, be also connected with short connector, on described short connector, be also connected with the EOC local side of access eoc signal.
Further, described CMTS signal and CATV signal are all inputted by the common port of duplexer one.
Further, the front end of described duplexer one is connected with the front end of duplexer three.
Further, the input of described high pass filter is connected with the low frequency end of duplexer one, and the output of this high pass filter is connected with the front end of duplexer two.
In order to realize better the utility model, described short connector comprises the first pin, the second pin and three-prong and the 4th pin, described EOC local side is connected with the first pin, the low frequency end of described duplexer two is connected with the second pin, the common port of described duplexer two is connected with three-prong, and the low frequency end of described duplexer three is connected with the 4th pin.
In order to ensure effect, described CMTS signal, low frequency eoc signal and CATV signal are all exported by the common port of duplexer three.
The utility model is compared compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is not only simple in structure, and with low cost, can also realize the transmission of CMTS signal, low frequency eoc signal and CATV signal, thereby CMTS signal, low frequency eoc signal and CATV signal can be carried out to compatible transmission; Meanwhile, the utility model also can carry out by short connector the quick switching of signal transmission passage according to different application scene.
(2) front end of duplexer one of the present utility model is connected with the front end of duplexer three, thereby can by the front end of this duplexer one, export by CATV high-frequency signal and the CMTS high frequency downstream signal of a pair of access of duplexer, and export again after the front end input by duplexer three, so that user uses.
(3) input of high pass filter of the present utility model is connected with the low frequency end of duplexer one, can carry out filtering the clutter below filtering 47M to the CMTS upward signal of the low frequency end input of duplexer one, the CMTS upward signal after processing be inputted to duplexer two front ends by the output of this high frequency filter simultaneously.
(4) short connector of the present utility model comprises four pins, EOC local side is connected with the first pin, the low frequency end of duplexer two is connected with the second pin, the common port of duplexer two is connected with three-prong, the low frequency end of institute's multiplexer three is connected with the 4th pin, thereby can be by the quick switching of the three kinds of signal transmission passages of short circuit between four pins of short connector.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Wherein, the corresponding name of the Reference numeral in accompanying drawing is called:
The 1-the first pin, the 2-the second pin, the 3-the three-prong, the 4-the four pin.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail:
Embodiment 1
As shown in Figure 1, radio circuit of the present utility model, comprises the duplexer one that accesses signal, is connected on this duplexer one and the duplexer three of output signal.On described duplexer one, also by high pass filter, be connected with duplexer two, second described duplexer is connected with duplexer three by short connector.Meanwhile, on described short connector, be also connected with the EOC local side of access eoc signal.The signal of access duplexer one can be CATV signal and CMTS signal, also can make CATV signal, therefore by the exportable CATV signal of duplexer three and CMTS signal and eoc signal, thereby can realize, CMTS signal, low frequency eoc signal and CATV signal are carried out to compatible transmission.Meanwhile, the utility model can carry out by short connector the quick switching of three kinds of signal transmission passages according to different application scene, thereby can meet user's different user demands.
The present embodiment describes for the system of disposing CATV and CMTS, the signal of access duplexer one comprises CATV signal (87M-1G), CMTS downstream signal (87M-1G, channel staggers with CATV) and CMTS upward signal (47-65M), above CATV signal and CMTS signal are by the common port access duplexer one of duplexer one.
Duplexer one carries out CATV signal (87M-1G), CMTS downstream signal (87M-1G) and the CMTS upward signal (47-65M) of access separated, then high-frequency signal is comprised to CATV signal (87M-1G) and CMTS downstream signal (87M-1G) export by the front end of duplexer one.The front end of described duplexer one is connected with the front end of duplexer three, thereby CATV signal (87M-1G) and CMTS downstream signal (87M-1G) can be inputted to the front end of duplexer three by the front end of duplexer one.
The CMTS upward signal (47-65M) of access duplexer one is processed and by the low frequency end of duplexer one, is exported through duplexer one.The low frequency end of this duplexer one is connected with high pass filter, thereby CMTS upward signal (47-65M) input high pass filter is processed.The following clutter of 47M in high pass filter filtering CMTS upward signal (47-65M), and this high pass filter is also connected with the front end of duplexer two, thereby filtered CMTS upward signal (47-65M) is inputted in duplexer two by the front end of duplexer two.
Meanwhile, EOC local side access eoc signal, the frequency range of this eoc signal is (7.5-30M).This EOC local side is connected with the first pin one of short connector, thereby eoc signal (7.5-30M) is inputted in short connector by the first pin one.The low frequency end of described duplexer two is also connected with the second pin phase 2 of short connector, and the common port of this duplexer two is connected with the three-prong 3 of short connector, and meanwhile, the 4th pin of short connector is connected with the low frequency end of duplexer three.In the present embodiment, described the first pin one and the second pin two short circuit, and three-prong 3 and the 4th pin 4 short circuits, eoc signal (7.5-30M) transfers to the second pin two by the first pin one, then inputs the low frequency end of duplexer two.
Duplexer two mixes the CMTS upward signal (47-65M) of inputting by its front end and the eoc signal (7.5-30M) inputted by its low frequency end, and exports by the common port of this duplexer two.Described CMTS upward signal (47-65M) and eoc signal (7.5-30M) transfer to the 4th pin 4 through three-prong 3, then by the low frequency end of duplexer three, input, the common port of described duplexer three is by the CMTS upward signal (47-65M) of the low frequency end input of this duplexer three and eoc signal (7.5-30M) output.Meanwhile, duplexer three mixes the CATV signal (87M-1G) of its front end input and CMTS downstream signal (87M-1G), and exports mixed CATV signal (87-1G) by the common port of this duplexer three.
Embodiment 2
The present embodiment is for the system of not disposing CATV and CMTS, and input signal only has CATV signal (87M-1G) to describe.The high-frequency signal CATV signal (87M-1G) of input, after duplexer one is processed, is inputted the front end of duplexer three by the front end of this duplexer one.Meanwhile, the eoc signal of EOC local side access is (7.5-65M), and this eoc signal (7.5-65M) is through the first pin one input short connector of short connector.The first pin one of short connector and the 4th pin 4 short circuits in the present embodiment, eoc signal (7.5-65M) transfers to the 4th pin 4 through the first pin one, then by the low frequency end input duplexer three of duplexer three.Three of duplexers by the CATV signals (87M-1G) of its front end input with and the eoc signal (7.5-65M) of low frequency end input mix, then the common port by this duplexer three is by CATV signal (87M-1G) and eoc signal (7.5-65M) output.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. the radio circuit of compatible CMTS, low frequency EOC and CATV signal, it is characterized in that: comprise access CMTS signal and CATV signal duplexer one, be connected with this duplexer one and export the duplexer three of CMTS signal, low frequency eoc signal and CATV signal, on described duplexer one, also by high pass filter, be connected with duplexer two, between described duplexer two and duplexer three, be also connected with short connector, on described short connector, be also connected with the EOC local side of access eoc signal.
2. according to the radio circuit of compatible CMTS claimed in claim 1, low frequency EOC and CATV signal, it is characterized in that: described CMTS signal and CATV signal are all inputted by the common port of duplexer one.
3. according to the radio circuit of the compatible CMTS described in claim 1 or 2, low frequency EOC and CATV signal, it is characterized in that: the front end of described duplexer one is connected with the front end of duplexer three.
4. according to the radio circuit of compatible CMTS claimed in claim 3, low frequency EOC and CATV signal, it is characterized in that: the input of described high pass filter is connected with the low frequency end of duplexer one, the output of this high pass filter is connected with the front end of duplexer two.
5. according to the radio circuit of compatible CMTS claimed in claim 4, low frequency EOC and CATV signal, it is characterized in that: described short connector comprises the first pin, the second pin and three-prong and the 4th pin, described EOC local side is connected with the first pin, the low frequency end of described duplexer two is connected with the second pin, the common port of described duplexer two is connected with three-prong, and the low frequency end of described duplexer three is connected with the 4th pin.
6. according to the radio circuit of the compatible CMTS described in claim 4 or 5, low frequency EOC and CATV signal, it is characterized in that: described CMTS signal, low frequency eoc signal and CATV signal are all exported by the common port of duplexer three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689054.4U CN203563085U (en) | 2013-11-04 | 2013-11-04 | CMTS, low-frequency EOC and CATV signal compatible radiofrequency circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689054.4U CN203563085U (en) | 2013-11-04 | 2013-11-04 | CMTS, low-frequency EOC and CATV signal compatible radiofrequency circuit |
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| Publication Number | Publication Date |
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| CN203563085U true CN203563085U (en) | 2014-04-23 |
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| CN201320689054.4U Expired - Fee Related CN203563085U (en) | 2013-11-04 | 2013-11-04 | CMTS, low-frequency EOC and CATV signal compatible radiofrequency circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218971A (en) * | 2014-09-26 | 2014-12-17 | 四川九州电子科技股份有限公司 | Radio frequency circuit compatible with three transmission modes |
| CN105681721A (en) * | 2014-11-21 | 2016-06-15 | 中兴通讯股份有限公司 | Signal hybrid output method and device and control equipment |
| WO2016156982A1 (en) * | 2015-03-30 | 2016-10-06 | Tyco Electronics Raychem Bvba | Catv network interface unit with bandplan detection on downstream signals |
| WO2016156978A1 (en) * | 2015-03-30 | 2016-10-06 | Tyco Electronics Raychem Bvba | Catv niu with bandplan detection in cross-over band |
| WO2018072750A1 (en) * | 2016-10-21 | 2018-04-26 | Huawei Technologies Co., Ltd. | Spectral extension in a cable network |
-
2013
- 2013-11-04 CN CN201320689054.4U patent/CN203563085U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218971A (en) * | 2014-09-26 | 2014-12-17 | 四川九州电子科技股份有限公司 | Radio frequency circuit compatible with three transmission modes |
| CN105681721A (en) * | 2014-11-21 | 2016-06-15 | 中兴通讯股份有限公司 | Signal hybrid output method and device and control equipment |
| WO2016156982A1 (en) * | 2015-03-30 | 2016-10-06 | Tyco Electronics Raychem Bvba | Catv network interface unit with bandplan detection on downstream signals |
| WO2016156978A1 (en) * | 2015-03-30 | 2016-10-06 | Tyco Electronics Raychem Bvba | Catv niu with bandplan detection in cross-over band |
| WO2018072750A1 (en) * | 2016-10-21 | 2018-04-26 | Huawei Technologies Co., Ltd. | Spectral extension in a cable network |
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| 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 |
Granted publication date: 20140423 |