CN204013863U - Antenna isolator - Google Patents
Antenna isolator Download PDFInfo
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- CN204013863U CN204013863U CN201420505617.4U CN201420505617U CN204013863U CN 204013863 U CN204013863 U CN 204013863U CN 201420505617 U CN201420505617 U CN 201420505617U CN 204013863 U CN204013863 U CN 204013863U
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Abstract
The utility model relates to isolator, and a kind of antenna isolator with EOC filter function and WIFI filter function is provided, and eliminates TV receiving system eoc signal and WIFI signal and disturbs.It comprises ground wire capacitance, signal isolation circuit antenna isolator, ground wire capacitance is connected between input interface of the ground wire and the excuse of output ground wire, signal isolation circuit is the circuit being in series by branch road, branch road comprises input, signal capacitance, EOC filter circuit, WIFI filter circuit, output, wherein, input and output are positioned at series circuit two ends.The utility model is applicable to cable TV.
Description
Technical field
The utility model relates to isolator, particularly antenna isolator.
Background technology
Along with the large area of panel TV and Set Top Box is universal, on market, repeatedly occurred damaging even naturally phenomenon because potential difference causes panel TV set or Set Top Box, main cause is the present more and more 3 core power lines that adopt of TV receiving system (television set or Set Top Box), and two-way ground wire is respectively power ground and digital catv signal ground connection (being the metal shell of limited television signal line).In fact, while fitting up due to user, the ground wire of power supply and the ground wire voltage of digital catv signal are variant, and some old-fashioned public housings exist the present situation of ground connection confusion, may cause digital catv signal and TV receiving system junction to have the situation of heating.When situation is serious, can cause television set spontaneous combustion, the danger such as on fire, common solution is between the signal input part and signal cable of TV receiving system, increases an antenna isolator, can effectively avoid the potential safety hazard causing because of potential difference.
EOC (Ethernet over Coax, ether data are transmitted by coaxial cable) be exactly that Ethernet data signal (be generally 0～65MHz is up, downstream signal) and digital catv signal (110M～870MHz numeral DVB-C signal) are adopted to frequency multiplexing technique, make these two signals co-cable transmission in same coaxial cable.And in same coaxial cable common transmission digital catv signal and data-signal, data-signal (signal amplitude is more up to 120dBuV left and right) will inevitably produce to digital catv signal the problem of disturbing, therefore, at cable digital TV receiving system front end, need design EOC filter circuit separately, inhibition seals in the amplitude of the data-signal of cable TV receiving terminal, reaches and improves the object of disturbing.Eoc signal and cable TV signal transmit by same channel, complexity and nonstandard property due to domestic wire signal cable system, the level amplitude of eoc signal and cable TV signal is also uneven simultaneously, is subject to eoc signal and disturbs and can not normally watch while often causing cable TV.
Along with WIFI (wireless fidelity, wireless communication technology) module becomes the standard configuration of intelligent television gradually, in use often occur that outside WIFI router is except normally to WIFI module radiation useful signal, also can by CABLE splitter, seal in the phenomenon of wire signal network, causing equally cable TV signal to be interfered affects normally watching of user.
Utility model content
The technical problems to be solved in the utility model is: a kind of antenna isolator with EOC filter function and WIFI filter function is provided, has eliminated TV receiving system eoc signal and WIFI signal and disturb.
For addressing the above problem, the technical solution adopted in the utility model is: antenna isolator, comprise ground wire capacitance, signal isolation circuit, ground wire capacitance is connected between input interface of the ground wire and output interface of the ground wire, signal isolation circuit is the circuit being in series by branch road, branch road comprises input, signal capacitance, EOC filter circuit, WIFI filter circuit, output, and wherein, input and output are positioned at series circuit two ends.
Particularly, described signal capacitance is high-voltage capacitance.
Particularly, described EOC filter circuit, comprises electric capacity one, electric capacity two, electric capacity three, electric capacity four, electric capacity five, inductance one, inductance two, inductance three, node one, node two; Node one, node two are respectively input node and the output node of circuit; Node one ground connection, node two ground connection, one end of one end of electric capacity one and inductance one is connected on node one altogether, the other end of inductance one is connected with one end of electric capacity three, the other end ground connection of electric capacity three, the other end of electric capacity one is connected with one end of electric capacity two, the other end of electric capacity one is connected with one end of inductance two again, the other end of inductance two is connected with one end of electric capacity four, the other end ground connection of electric capacity four, one end of the other end of electric capacity two and inductance three is connected on node two altogether, and the other end of inductance three is connected with one end of electric capacity five, the other end ground connection of electric capacity five.，
Particularly, described WIFI filter circuit, comprises electric capacity six, electric capacity seven, electric capacity eight, electric capacity nine, inductance four, inductance five, inductance six, inductance seven, inductance eight, electric capacity ten, node three, node four, node three, node four are respectively input node and the output node of circuit, node three ground connection, node four ground connection, one end of one end of electric capacity six and inductance four is connected on node three altogether, the other end of electric capacity six is connected with one end of electric capacity seven, the other end of electric capacity seven is connected with one end of electric capacity eight, the other end of inductance four is connected with inductance end on May Day, the other end of inductance five is connected with one end of inductance six, the other end of inductance six and electric capacity eight other ends are connected on node four altogether, the other end of electric capacity six is connected with the other end of inductance four again, the other end of inductance four is connected with one end of inductance seven again, the other end of inductance seven is connected with one end of electric capacity nine, the other end ground connection of electric capacity nine, the other end of electric capacity seven is connected with the other end of inductance five again, the other end of inductance five is connected with one end of inductance eight again, the other end of inductance eight is connected with one end of electric capacity ten, the other end ground connection of electric capacity ten.
The beneficial effects of the utility model are: EOC filter circuit and WIFI filter circuit are built among antenna isolator, and user is without installing in addition corresponding treatment facility additional, economical and practical; EOC treatment circuit and WIFI treatment circuit have effectively been eliminated EOC interference signal and the WIFI interference signal in TV signal, and television image is affected by above interference signal no longer.
Accompanying drawing explanation
Fig. 1 is traditional antenna isolator schematic diagram;
Fig. 2 is the utility model embodiment schematic diagram;
Fig. 3 is the utility model embodiment E OC filter circuit figure;
Fig. 4 is the utility model embodiment WIFI filter circuit figure;
In figure, number: IN is input, OUT is output, GND is ground wire, 44 is shielding case, E is EOC filter circuit, W is WIFI filter circuit, C1 is electric capacity one, C2 is electric capacity two, C3 is electric capacity three, C4 is electric capacity four, C5 is electric capacity five, C6 is electric capacity six, C7 is electric capacity seven, C8 is electric capacity eight, C9 is electric capacity nine, C10 is electric capacity ten, C11 is capacitance, C22 is ground wire capacitance two, C33 is ground line capacitance three, L1 inductance one, L2 is inductance two, L3 is inductance three, L4 is inductance four, L5 is inductance five, L6 is inductance six, L7 is inductance seven, L8 is inductance eight, 1. be node one, 2. be node two, 3. be node three, 4. be node four.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is traditional antenna isolator schematic diagram, and traditional antenna isolator comprises ground wire capacitance, signal capacitance C11.Ground wire capacitance is connected between input interface of the ground wire and output interface of the ground wire.In figure, ground wire capacitance two C22 and ground wire capacitance three C33 are in parallel, are connected between input interface of the ground wire and the excuse of output ground wire, and ground wire GND connects shielding case 44, can avoid the potential safety hazard causing because of potential difference.Signal isolation adopts signal capacitance C11 isolation.Signal capacitance C11, ground wire capacitance two C22, ground wire capacitance three C33 are high-voltage capacitance, and capacitance is generally 1000pF, 2000V.
Fig. 2 is the utility model embodiment schematic diagram, on traditional antenna isolator basis, signal isolation circuit is improved.In signal isolation circuit: input IN is connected with signal capacitance C11 one end, the signal capacitance C11 other end is connected with the input node of EOC filter circuit E, the output node of EOC filter circuit E is connected with the input node of WIFI filter circuit W, and WIFI filter circuit W output node is connected with output OUT.Ground wire connects shielding case 44, and signal capacitance C11, ground wire capacitance two C22, ground wire capacitance three C33 adopt high-voltage capacitance.
Particularly, above-mentioned high-voltage capacitance is 1000pF, 2000V.
As shown in Figure 3, the utility model EOC filter comprise electric capacity one C1, electric capacity two C2, electric capacity three C3, electric capacity four C4, electric capacity five C5, inductance one L1, inductance two L2, inductance three L3, node one 1., node two 2., node one 1., 2. node two be respectively input node and the output node of circuit, node one is ground connection 1., node two is ground connection 2., 1. one end of one end of electric capacity one C1 and inductance one L1 is connected on node one altogether, the other end of inductance one L1 is connected with one end of electric capacity three C3, the other end ground connection of electric capacity three C3, the other end of electric capacity one C1 is connected with one end of electric capacity two C2, the other end of electric capacity one C1 is connected with one end of inductance two L2 again, the other end of inductance two L2 is connected with one end of electric capacity four C4, the other end ground connection of electric capacity four C4, 2. one end of the other end of electric capacity two C2 and inductance three L3 is connected on node two altogether, the other end of inductance three L3 is connected with one end of electric capacity five C5, the other end ground connection of electric capacity five C5.
For realizing better EOC filter function, electric capacity one C1 is 18pF, and electric capacity two C2 are 22pF, and electric capacity three C3 are 180pF, and electric capacity four C4 are 47pF, and electric capacity five C5 are 120pF, and inductance one L1 is 82nH, and inductance two L2 are 100nH, and inductance three L3 are 100nH.
As shown in Figure 4, the utility model state WIFI filtering comprise electric capacity six C6, electric capacity seven C7, electric capacity eight C8, electric capacity nine C9, electric capacity ten C10, inductance four L4, inductance five L5, inductance six L6, inductance seven L7, inductance eight L8, node three 3., node four 4., node three 3., 4. node four be respectively input node and the output node of circuit, node three is ground connection 3., node four is ground connection 4., 3. one end of one end of electric capacity six C6 and inductance four L4 is connected on node three altogether, the other end of electric capacity six C6 is connected with one end of electric capacity seven C7, the other end of electric capacity seven C7 is connected with one end of electric capacity eight C8, inductance four L4) the other end is connected with inductance five L5 one end, the other end of inductance five L5 is connected with one end of inductance six L6, 4. the other end of the other end of inductance six L6 and electric capacity eight C8 is connected on node four altogether, the other end of electric capacity six C6 is connected with the other end of inductance four L4 again, the other end of inductance four L4 is connected with one end of inductance seven L7 again, the other end of inductance seven L7 is connected with one end of electric capacity nine C9, the other end ground connection of electric capacity nine C9, the other end of electric capacity seven C7 is connected with the other end of inductance five L5 again, the other end of inductance five L5 is connected with one end of inductance eight L8 again, the other end of inductance eight L8 is connected with one end of electric capacity ten C10, the other end ground connection of electric capacity ten C10.
For realizing better WIFI filter function, electric capacity six C6 are 4.7pF, electric capacity seven C7 are 1.8pF, and electric capacity eight C8 are 5.6pF, and electric capacity nine C9 are 1.8pF, electric capacity ten C10 are 1.2pF, inductance four L4 are 4.7nH, and inductance five L5 are 12nH, and inductance six L6 are 4.7nH, inductance seven L7 are 3.3nH, and inductance eight L8 are 3.3nH.
Above device forms signal isolation circuit jointly, can effectively eliminate the eoc signal interference of low-and high-frequency and the WIFI signal of 2.4GHz and disturb, and guarantees the quality of TV signal.
Claims (4)
1. antenna isolator, comprise ground wire capacitance, signal isolation circuit, ground wire capacitance is connected between input interface of the ground wire and output interface of the ground wire, it is characterized in that, signal isolation circuit is the circuit being in series by branch road, branch road comprises input, signal capacitance (C11), EOC filter circuit, WIFI filter circuit, output, and wherein, input and output are positioned at series circuit two ends.
2. antenna isolator as claimed in claim 1, is characterized in that, described signal capacitance (C11) is high-voltage capacitance.
3. antenna isolator as claimed in claim 1, it is characterized in that, described EOC filter circuit, comprises electric capacity one (C1), electric capacity two (C2), electric capacity three (C3), electric capacity four (C4), electric capacity five (C5), inductance one (L1), inductance two (L2), inductance three (L3), node one (1.), node two (2.), node one (1.), node two (2.) are respectively input node and the output node of circuit, node one (1.) ground connection, node two (2.) ground connection, one end of one end of electric capacity one (C1) and inductance one (L1) is connected on node one (1.) altogether, the other end of inductance one (L1) is connected with one end of electric capacity three (C3), the other end ground connection of electric capacity three (C3), the other end of electric capacity one (C1) is connected with one end of electric capacity two (C2), the other end of electric capacity one (C1) is connected with one end of inductance two (L2) again, the other end of inductance two (L2) is connected with one end of electric capacity four (C4), the other end ground connection of electric capacity four (C4), one end of the other end of electric capacity two (C2) and inductance three (L3) is connected on node two (2.) altogether, the other end of inductance three (L3) is connected with one end of electric capacity five (C5), the other end ground connection of electric capacity five (C5).
4. antenna isolator as claimed in claim 1, it is characterized in that, described WIFI filter circuit, comprises electric capacity six (C6), electric capacity seven (C7), electric capacity eight (C8), electric capacity nine (C9), electric capacity ten (C10), inductance four (L4), inductance five (L5), inductance six (L6), inductance seven (L7), inductance eight (L8), node three (3.), node four (4.), node three (3.), node four (4.) are respectively input node and the output node of circuit, node three (3.) ground connection, node four (4.) ground connection, one end of one end of electric capacity six (C6) and inductance four (L4) is connected on node three (3.) altogether, the other end of electric capacity six (C6) is connected with one end of electric capacity seven (C7), the other end of electric capacity seven (C7) is connected with one end of electric capacity eight (C8), the other end of inductance four (L4) is connected with inductance five (L5) one end, the other end of inductance five (L5) is connected with one end of inductance six (L6), 4. the other end of the other end of inductance six (L6) and electric capacity eight (C8) is connected on node four altogether, the other end of electric capacity six (C6) is connected with the other end of inductance four (L4) again, the other end of inductance four (L4) is connected with one end of inductance seven (L7) again, the other end of inductance seven (L7) is connected with one end of electric capacity nine (C9), the other end ground connection of electric capacity nine (C9), the other end of electric capacity seven (C7) is connected with the other end of inductance five (L5) again, the other end of inductance five (L5) is connected with one end of inductance eight (L8) again, the other end of inductance eight (L8) is connected with one end of electric capacity ten (C10), the other end ground connection of electric capacity ten (C10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505617.4U CN204013863U (en) | 2014-09-03 | 2014-09-03 | Antenna isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505617.4U CN204013863U (en) | 2014-09-03 | 2014-09-03 | Antenna isolator |
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| Publication Number | Publication Date |
|---|---|
| CN204013863U true CN204013863U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420505617.4U Active CN204013863U (en) | 2014-09-03 | 2014-09-03 | Antenna isolator |
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| CN (1) | CN204013863U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935993A (en) * | 2015-06-23 | 2015-09-23 | 四川长虹电器股份有限公司 | WIFI/EOC filtering control circuit and control method for digital television |
| US9893759B1 (en) | 2017-04-25 | 2018-02-13 | Sprint Communications Company L.P. | Wireless relay antenna isolation |
-
2014
- 2014-09-03 CN CN201420505617.4U patent/CN204013863U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935993A (en) * | 2015-06-23 | 2015-09-23 | 四川长虹电器股份有限公司 | WIFI/EOC filtering control circuit and control method for digital television |
| CN104935993B (en) * | 2015-06-23 | 2018-10-19 | 四川长虹电器股份有限公司 | DTV WIFI/EOC filter control circuits and control method |
| US9893759B1 (en) | 2017-04-25 | 2018-02-13 | Sprint Communications Company L.P. | Wireless relay antenna isolation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170922 Address after: 621000 Mianyang city of Sichuan Province, Sichuan Industrial Park, love science and Technology Co. Patentee after: Sichuan love Technology Co., Ltd. Address before: County 622651 Sichuan city of Mianyang Province Hua Gai Zhen Luo Sheng Jie Sichuan Changhong Electronics Co., Ltd. Patentee before: SICHUAN CHANGHONG ELECTRONIC PARTS CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 621000 Sichuan Ailian Technology Co., Ltd Patentee after: Sichuan Ailian Technology Co., Ltd Address before: 621000 Mianyang city of Sichuan Province, Sichuan Industrial Park, love science and Technology Co. Patentee before: SICHUAN AI-LINK TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |