CN201260173Y - Concentrated E1 interface electromagnetic interference inhibition apparatus for communication device - Google Patents
Concentrated E1 interface electromagnetic interference inhibition apparatus for communication device Download PDFInfo
- Publication number
- CN201260173Y CN201260173Y CNU2008201095210U CN200820109521U CN201260173Y CN 201260173 Y CN201260173 Y CN 201260173Y CN U2008201095210 U CNU2008201095210 U CN U2008201095210U CN 200820109521 U CN200820109521 U CN 200820109521U CN 201260173 Y CN201260173 Y CN 201260173Y
- Authority
- CN
- China
- Prior art keywords
- electromagnetic interference
- filter circuit
- terminal
- signal
- multichannel
- Prior art date
- 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 - Lifetime
Links
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model relates to a communication equipment coarctation E1 interface electromagnetic interference restriction device which comprises one or more multipath 2M electromagnetic interference restriction parts, wherein the multipath 2M electromagnetic interference restriction part comprises a signal input connection unit, a signal output connection unit and an EMI filter circuit unit connected between the signal input connection unit and the signal output connection unit, the EMI filter circuit unit comprises a plurality of T-shaped filter circuits connected in parallel and a grounding terminal, the T-shaped filter comprises a first ferrite bead, a three-terminal capacitor and a second ferrite bead which are sequentially connected, and the grounding terminal of the three-terminal capacitor is connected with the grounding terminal of the EMI filter circuit unit. The device adopts coarctation 2M terminal electromagnetic interference restriction technology under the condition of unchanging the structural size of the original terminal board, and conduction disturbance and radiation interference can be obviously restricted. Therefore, equipment can better meet the standard requirements of relevant electromagnetic compatibility.
Description
Technical field
The utility model relates to electromagnetic interference (EMI) inhibition technology, is specifically related to the intensive E1 interface of a kind of communication equipment electromagnetic interference restraining device.
Background technology
Along with communication system equipment E1 (2048kbit/s) interface dense degree improves; and environment for use becomes increasingly complex; the multiple signals transmission brings emc issue easily; particularly conduction and the radiation disturbance limit value requirement that is above standard easily; bring problems for the electromagnetic compatibility authentication of product; on the 2M terminal board that does not adopt intensive E1 interface electromagnetic interference inhibition technology during transmission multichannel 2M signal, conduction and radiation disturbance by holding wire can exceed standard-required usually.For the conduction and the radiation disturbance of suppression equipment, by the product test authentication, it is very necessary to adopt certain electromagnetic interference (EMI) to suppress technology to the intensive E1 of communication equipment (2048kbit/s) interface.
Summary of the invention
In order to solve the electromagnetic interference (EMI) problem that the intensive E1 of communication equipment (2048kbit/s) interface exists, the utility model proposes the intensive E1 interface of a kind of communication equipment electromagnetic interference restraining device, it comprises that one or more multichannel 2M electromagnetic interference suppress parts, described multichannel 2M electromagnetic interference suppresses parts and comprises signal input linkage unit, signal output linkage unit and be connected signal input linkage unit and signal output linkage unit between EMI filter circuit unit, described EMI filter circuit unit comprises the T mode filter circuit and the earth terminal of a plurality of parallel connections, described T mode filter circuit comprises first ferrite bean of series connection successively, the three terminal capacitor and second ferrite bean, the earth terminal of three terminal capacitor is connected with the earth terminal of described EMI filter circuit unit.
Wherein, described device is connected between e1 port and the signal transformer.
Wherein, for corresponding with signal transformer, each multichannel 2M electromagnetic interference suppresses parts and comprises that the input/output interface of 8 T mode filter circuit and correspondence is to handle 4 road 2M signals simultaneously.
Wherein, each multichannel 2M electromagnetic interference suppresses parts and is formed the integrated circuit form and is installed on the printed circuit board.
The utility model is not changing under original terminal board PCB physical dimension size cases, adopts intensive 2M port electromagnetic interference inhibition technology can suppress conduction interference and radiation disturbance significantly, makes equipment satisfy relevant electromagnetic compatibility standard requirement better.
Description of drawings
Fig. 1 is the hardware principle block diagram that multichannel 2M electromagnetic interference suppresses parts;
Fig. 2 is the circuit theory diagrams that multichannel 2M electromagnetic interference suppresses parts;
Fig. 3 is the signal flow graph that multichannel 2M electromagnetic interference suppresses parts;
Fig. 4 is the outward appearance front view that multichannel 2M electromagnetic interference suppresses parts;
Fig. 5 is the outward appearance left view that multichannel 2M electromagnetic interference suppresses parts;
Fig. 6 is the outward appearance upward view that multichannel 2M electromagnetic interference suppresses parts.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Fig. 1 shows the theory diagram that the modularized multiple 2M electromagnetic interference that is used to form intensive E1 interface EMI restraining device described in the utility model suppresses parts, and described multichannel 2M electromagnetic interference suppresses parts and comprises signal input linkage unit, signal output linkage unit, EMI filter circuit unit.Wherein, signal input linkage unit provides multichannel 2M signal input interface, signal output linkage unit provides multichannel 2M the output interface of signal, EMI filter circuit unit comprises a plurality of node terminals, described filter circuit unit is used for the electromagnetic interference component of filtering 2M signal, and this electromagnetic interference component is introduced ground level by earth terminal.A plurality of described multichannel 2M electromagnetic interference inhibition parts are carried out combination in parallel can form intensive E1 interface EMI restraining device, suppress for intensive E1 interface provides EMI.
Fig. 2 shows the circuit theory diagrams that described multichannel 2M electromagnetic interference suppresses parts:
Multichannel 2M electromagnetic interference suppresses in the assembly input, and the I1 that has been exposed～In root pin connects I1～In road signal respectively, and correspondence is welded on the pcb board, and inner and corresponding filtering components and parts are connected;
EMI filter circuit unit adopts n T mode filter circuit to compose in parallel, and the corresponding input pin of each T mode filter circuit suppresses common mode harassing and wrecking signal.Wherein, each T mode filter circuit comprises a three terminal capacitor and two ferrite beans, described ferrite bean is connected in series with the input and the output of three terminal capacitor respectively, the earth terminal of three terminal capacitor is connected to earth terminal G1, the G2 pin of EMI filter circuit unit, and G1 and G2 pin are solder-connected on the ground plane on the pcb board.
Multichannel 2M electromagnetic interference suppresses assembly output and is connected with O1～On pin, and corresponding to the I1～In pin with input, described O1～On pin is connected with the output of EMI filter circuit unit.
Described intensive E1 interface EMI restraining device can be installed between E1 interface and the signal transformer, suppresses so that electromagnetic interference to be provided, specifically as shown in Figure 3.
Because the signal transformer module that existing e1 port is commonly used generally can be handled 4 road 2M signals, for corresponding one by one with the signal transformer module, can get n=8, be about to the filter circuit device (three terminal capacitor and ferrite bean) and the corresponding input pin of 8 E1 (4 road 2M) holding wire, output needle is packaged into integrated circuit, constitute 4 road 2M electromagnetic interference and suppress parts, 4 road integrated 2M electromagnetic interference suppress the parts outward appearance shown in Fig. 4-6, owing to adopted the form of integrated circuit, described 4 road 2M electromagnetic interference can be suppressed parts and form multiple combination, satisfy the use needs of the corresponding way 2M of the intensive E1 interface of communication equipment.
Described device adopts multichannel 2M electromagnetic interference to suppress technology at the 2M terminal board, when not influencing the 2M signal transmission quality, can effectively suppress the electromagnetic disturbance on 2M signaling interface and the holding wire, the reliable and stable work of protection equipment.
The above is preferred embodiment of the present utility model only, is not limited to this, all any modifications of being made within the utility model spirit and principle, is equal to replacement and improvement etc., all is contained within the protection range of the present utility model.
Claims (4)
1, the intensive E1 interface of a kind of communication equipment electromagnetic interference restraining device, comprise that one or more multichannel 2M electromagnetic interference suppress parts, described multichannel 2M electromagnetic interference suppresses parts and comprises signal input linkage unit, signal output linkage unit and be connected signal input linkage unit and signal output linkage unit between EMI filter circuit unit, described EMI filter circuit unit comprises the T mode filter circuit and the earth terminal of a plurality of parallel connections, described T mode filter circuit comprises first ferrite bean of series connection successively, the three terminal capacitor and second ferrite bean, the earth terminal of three terminal capacitor all are connected with the earth terminal of described EMI filter circuit unit.
2, device as claimed in claim 1 is characterized in that: described device is connected between e1 port and the signal transformer.
3, device as claimed in claim 1, it is characterized in that: for corresponding with signal transformer, each multichannel 2M electromagnetic interference suppresses parts and comprises that 8 T mode filter circuit and corresponding signal are imported linkage unit, signal is exported linkage unit to handle 4 road 2M signals simultaneously.
4, device as claimed in claim 1 is characterized in that: each multichannel 2M electromagnetic interference inhibition parts is formed the integrated circuit form and is installed on the printed circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201095210U CN201260173Y (en) | 2008-07-30 | 2008-07-30 | Concentrated E1 interface electromagnetic interference inhibition apparatus for communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201095210U CN201260173Y (en) | 2008-07-30 | 2008-07-30 | Concentrated E1 interface electromagnetic interference inhibition apparatus for communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201260173Y true CN201260173Y (en) | 2009-06-17 |
Family
ID=40774412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201095210U Expired - Lifetime CN201260173Y (en) | 2008-07-30 | 2008-07-30 | Concentrated E1 interface electromagnetic interference inhibition apparatus for communication device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201260173Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069465A1 (en) * | 2009-12-11 | 2011-06-16 | 华为技术有限公司 | Communication device, method and system |
| WO2012119357A1 (en) * | 2011-03-04 | 2012-09-13 | 上海雷诺尔科技股份有限公司 | Connecting unit applicable to high voltage variable-frequency governor |
-
2008
- 2008-07-30 CN CNU2008201095210U patent/CN201260173Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069465A1 (en) * | 2009-12-11 | 2011-06-16 | 华为技术有限公司 | Communication device, method and system |
| WO2012119357A1 (en) * | 2011-03-04 | 2012-09-13 | 上海雷诺尔科技股份有限公司 | Connecting unit applicable to high voltage variable-frequency governor |
| RU2489785C1 (en) * | 2011-03-04 | 2013-08-10 | Шанхай Жэньлэ Сайэнс & Текнолоджи Ко., Лтд | Connector for high voltage and frequency converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5223806A (en) | Method and apparatus for reducing electromagnetic interference and emission associated with computer network interfaces | |
| CN104426007B (en) | transmission line and filter module | |
| US10257910B2 (en) | Optical module | |
| CN106844850B (en) | Design method of eliminating circuit for far-end crosstalk noise | |
| WO1998033242A1 (en) | High density connector modules having integral filtering components within repairable, replaceable submodules | |
| CN201260173Y (en) | Concentrated E1 interface electromagnetic interference inhibition apparatus for communication device | |
| US10575382B2 (en) | Optical module | |
| CN105375090A (en) | Quickly mounted filter board | |
| CN110018408B (en) | Adjusting method for failure of home gateway type communication terminal to pass conducted disturbance test | |
| WO2015117359A1 (en) | Wireless fidelity (wifi) auxiliary antenna | |
| CN204578920U (en) | A kind of card cage signal access device | |
| CN210327380U (en) | Low-frequency EMI suppression filter | |
| CN206892859U (en) | Can interface circuit | |
| CN205722748U (en) | The anti-electromagnetic interference circuit of a kind of Low Voltage Differential Signal and display screen interface circuit | |
| US10135417B2 (en) | Coupling circuits with capacitors | |
| CN203675437U (en) | Circuit board and electronic device comprising same | |
| CN208691268U (en) | A kind of CAN communication modular circuit suitable for monitoring device | |
| CN202977661U (en) | Filtering assembly | |
| CN100454759C (en) | Wave filtering method and apparatus | |
| CN203589372U (en) | Signal transmission device | |
| CN213581032U (en) | Anti-static adapter of HDMI interface | |
| CN204361221U (en) | A kind of C-band band pass filter | |
| CN112398540B (en) | Optical module and signal processing system comprising same | |
| WO2014099793A1 (en) | An apparatus for differential far-end crosstalk reduction | |
| CN111082406A (en) | Accessory interface electrostatic protection circuit and equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090617 |
|
| CX01 | Expiry of patent term |