CN206060801U - A kind of filter circuit being applied in WOC local sides - Google Patents
A kind of filter circuit being applied in WOC local sides Download PDFInfo
- Publication number
- CN206060801U CN206060801U CN201620857045.5U CN201620857045U CN206060801U CN 206060801 U CN206060801 U CN 206060801U CN 201620857045 U CN201620857045 U CN 201620857045U CN 206060801 U CN206060801 U CN 206060801U
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- circuit
- wifi
- catv
- woc
- duplexer
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
This utility model is related to a kind of filter circuit being applied in WOC local sides, applies to WIFI signal by hfc transport system demand.A kind of filter circuit being applied in WOC local sides, the filter circuit include CATV allotter circuits, 1/4 wavelength work(parallel circuits of WIFI and duplexer circuit；CATV allotter circuits and 1/4 wavelength work(parallel circuits of WIFI are respectively classified into multichannel, the corresponding setting multichannel of duplexer circuit, CATV allotter circuits and 1/4 wavelength work(parallel circuits of WIFI are connected with duplexer circuit all the way all the way all the way, CATV shunting signs and WIFI shunting signs are mixed by duplexer circuit, WOC signals are exported eventually through duplexer C Hybrid port, CATV signals and WIFI signal in WOC output signals, is included.This utility model does not affect former catv network using efficient with WIFI by WOC schemes.
Description
Technical field
This utility model is related to a kind of filter circuit being applied in WOC local sides, applies to WIFI signal by coaxial electrical
Cable Transmission system demand.
Background technology
The design of existing WOC (WIFI signal is transmitted by coaxial cable), it is most to adopt CATV signals and WIFI signal first double
Work mixes, and then distributes network transmission.
This way in CHINA RFTCOM Co Ltd standard and does not comply with requirement in laboratory test results, and for former network
There is considerable influence, it is impossible to equivalent switching, WIFI is decayed larger, affect WIFI transmission ranges and using for WIFI antennas to imitate
Really, specific targets refer to following table.
≤ 7dB (2400～2500MHz of at) (WIFI is to output), this Index Influence WIFI transmission ranges；
>=4dB (7.5～1000MHz of at) (forward direction), this Index Influence CATV original network；
>=6dB (2400～2500MHz of at) (forward and reverse), the using effect of this Index Influence WIFI antennas.
The content of the invention
To solve the problems, such as that These parameters are undesirable, the purpose of this utility model is to provide one kind and is applied in WOC local sides
Filter circuit, allow WOC schemes do not affect former catv network using and WIFI it is efficient.
In order to realize above-mentioned purpose, this utility model employs following technical scheme：
A kind of filter circuit being applied in WOC local sides, the filter circuit include CATV allotter circuits, 1/4 ripples of WIFI
Long work(parallel circuit and duplexer circuit；CATV allotter circuits and 1/4 wavelength work(parallel circuits of WIFI are respectively classified into multichannel, duplex
The corresponding setting multichannel of device circuit, all the way CATV allotter circuits and all the way 1/4 wavelength work(parallel circuits of WIFI and duplexer all the way
Circuit is connected, and CATV shunting signs and WIFI shunting signs are mixed by duplexer circuit, are mixed eventually through duplexer C
Port exports WOC signals, and CATV signals and WIFI signal are included in WOC output signals.
Preferably, 75 ohm distributor circuits of the described CATV allotter circuits for cable television, CATV allotters electricity
Road is connected with the duplexer circuit that impedance is 75 ohm, 75 ohmages between CATV allotter circuits and duplexer circuit
Match somebody with somebody.
Preferably, described CATV allotter circuits add PCB trace to constitute by magnetic core and copper cash coiling.
Preferably, 50 ohm work(parallel circuits of the described 1/4 wavelength work(parallel circuits of WIFI for WIFI circuits, WIFI 1/
4 wavelength work(parallel circuits are connected with the duplexer circuit that impedance is 75 ohm, 1/4 wavelength work(parallel circuits of WIFI and duplexer circuit
Between 50-75 ohmages conversion.
Preferably, described 1/4 wavelength work(parallel circuits of WIFI are made up of the PCB microstrip lines of 1/4 wavelength of 2450Mhz.
Preferably, described duplexer circuit is by a high pass filter and a low-pass filter circuit matching combination
Into.
This utility model is distributed by CATV respectively as a result of above-mentioned technical scheme, CATV signals and WIFI signal
Device circuit and 1/4 wavelength work(parallel circuits of WIFI are divided into multichannel CATV signal and multichannel WIFI signal；Then CATV signals and WIFI
Signal is mixed by duplexer circuit, eventually through duplexer C Hybrid port output signal WOC signals, is mixed by duplexer C
Port output signal WOC signals；Include in WOC signals:CATV signals and WIFI signal.This utility model is by WOC schemes not shadow
Original catv network is rung using efficient with WIFI.
Description of the drawings
Fig. 1 is one equivalent circuit diagram of this utility model.
Fig. 2 is by the electrical schematic diagram implemented according to this utility model.
Fig. 3 is WIFI signal to WOC signal port characteristic curves (50 ohm turn 75 ohm).
Fig. 4 is CATV signals to WOC signal port characteristic curves (75 ohm).
Specific embodiment
Below in conjunction with the accompanying drawings specific embodiment of the present utility model is made a detailed explanation.
A kind of filter circuit being applied in WOC local sides as shown in Figure 1 and Figure 2, the filter circuit include CATV allotters
Circuit 1,1/4 wavelength work(parallel circuits 2 of WIFI and duplexer circuit 3；CATV allotter circuits 1 and 1/4 wavelength work(of WIFI point electricity
Road 2 is respectively classified into 2 tunnels, and duplexer circuit 3 is corresponding to arrange 2 tunnels, all the way CATV allotter circuits 1 and all the way 1/4 wavelength of WIFI
Work(parallel circuit 2 is connected with duplexer circuit 3 all the way, and CATV shunting signs and WIFI shunting signs are mixed by duplexer circuit 3
Closing, WOC signals being exported eventually through duplexer C Hybrid port, CATV signals and WIFI signal are included in WOC output signals.
As shown in Fig. 2 75 ohm distributor circuits of the CATV allotter circuits 1 for cable television, CATV allotter circuits 1 with
Impedance is that 75 ohm of duplexer circuit 3 is connected, 75 ohms impedance match between CATV allotter circuits 1 and duplexer circuit 3.
Described CATV allotter circuits 1 add PCB trace to constitute by magnetic core and copper cash coiling.
As shown in Fig. 2 50 ohm work(parallel circuits of the 1/4 wavelength work(parallel circuits 2 of WIFI for WIFI circuits, 1/4 ripples of WIFI
Long work(parallel circuit 2 is connected with the duplexer circuit 3 that impedance is 75 ohm, 1/4 wavelength work(parallel circuits 2 of WIFI and duplexer circuit 3
Between 50-75 ohmages conversion.Described 1/4 wavelength work(parallel circuits 2 of WIFI by 2450Mhz 1/4 wavelength PCB micro-strips
Line is constituted.
As shown in Fig. 2 duplexer circuit 3 is combined by a high pass filter and a low-pass filter circuit matching.
Above-mentioned filter circuit is see the table below to following technical specification：
Claims (6)
1. a kind of filter circuit being applied in WOC local sides, it is characterised in that：The filter circuit includes CATV allotter circuits
(1), 1/4 wavelength work(parallel circuit (2) of WIFI and duplexer circuit (3)；1/4 wavelength work(of CATV allotter circuits (1) and WIFI
Parallel circuit (2) is respectively classified into multichannel, the corresponding setting multichannel of duplexer circuit (3), all the way CATV allotter circuits (1) and all the way
1/4 wavelength work(parallel circuit (2) of WIFI is connected with duplexer circuit all the way (3), and CATV shunting signs and WIFI shunting signs are logical
Duplexer circuit (3) mixing being crossed, WOC signals being exported eventually through duplexer C Hybrid port, CATV is included in WOC output signals
Signal and WIFI signal.
2. a kind of filter circuit being applied in WOC local sides according to claim 1, it is characterised in that：CATV allotters
75 ohm distributor circuits of the circuit (1) for cable television, CATV allotter circuits (1) and the duplexer circuit that impedance is 75 ohm
(3) it is connected, 75 ohms impedance match between CATV allotter circuits (1) and duplexer circuit (3).
3. a kind of filter circuit being applied in WOC local sides according to claim 2, it is characterised in that：CATV allotters
Circuit (1) adds PCB trace to constitute by magnetic core and copper cash coiling.
4. a kind of filter circuit being applied in WOC local sides according to claim 1, it is characterised in that：1/4 ripples of WIFI
50 ohm work(parallel circuits of the long work(parallel circuit (2) for WIFI circuits, 1/4 wavelength work(parallel circuit (2) of WIFI are 75 ohm with impedance
Duplexer circuit (3) be connected, between 1/4 wavelength work(parallel circuit (2) of WIFI and duplexer circuit (3) 50-75 ohmages change
Change.
5. a kind of filter circuit being applied in WOC local sides according to claim 4, it is characterised in that：1/4 ripples of WIFI
Long work(parallel circuit (2) is made up of the PCB microstrip lines of 1/4 wavelength of 2450Mhz.
6. a kind of filter circuit being applied in WOC local sides according to claim 1, it is characterised in that：Duplexer circuit
(3) combined by a high pass filter and a low-pass filter circuit matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620857045.5U CN206060801U (en) | 2016-08-09 | 2016-08-09 | A kind of filter circuit being applied in WOC local sides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620857045.5U CN206060801U (en) | 2016-08-09 | 2016-08-09 | A kind of filter circuit being applied in WOC local sides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206060801U true CN206060801U (en) | 2017-03-29 |
Family
ID=58380269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620857045.5U Active CN206060801U (en) | 2016-08-09 | 2016-08-09 | A kind of filter circuit being applied in WOC local sides |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206060801U (en) |
-
2016
- 2016-08-09 CN CN201620857045.5U patent/CN206060801U/en active Active
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