CN202738251U - Printed circuit board inhibiting electromagnetic interference - Google Patents
Printed circuit board inhibiting electromagnetic interference Download PDFInfo
- Publication number
- CN202738251U CN202738251U CN 201220365368 CN201220365368U CN202738251U CN 202738251 U CN202738251 U CN 202738251U CN 201220365368 CN201220365368 CN 201220365368 CN 201220365368 U CN201220365368 U CN 201220365368U CN 202738251 U CN202738251 U CN 202738251U
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- China
- Prior art keywords
- printed circuit
- circuit board
- electromagnetic interference
- signal
- grounding
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- 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 - Fee Related
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Abstract
The utility model aims to provide a printed circuit board inhibiting electromagnetic interference. The printed circuit board comprises a base board and a plurality of grounding areas corresponding to each signal area in shape, wherein the base board is provided with a plurality of signal areas with different signal frequencies, and adjacent grounding areas are in electrical connection by employing inductance or magnetic beads. If the printed circuit board is provided with a grounding layer which is consistent with the printed circuit board in shape, interference signals with various different frequencies are connected in series with the grounding layer, the electromagnetic interference is aggravated. According to the printed circuit board inhibiting electromagnetic interference, the signal areas with various different signal frequencies are respectively provided with corresponding grounding areas independently, so the interference signals with various different signal frequencies do not exist in a single grounding area, moreover, adjacent grounding areas are in electrical connection by employing the inductance or the magnetic beads, so equal potentials of all the grounding areas can be guaranteed, and the high frequency interference signals are prevented from spreading through the inductance or the magnetic beads by utilizing alternating current signal obstructtion characteristics of the inductance or the magnetic beads.
Description
Technical field
The utility model belongs to electronic technology field, specially refers to a kind of printed circuit board (PCB) that suppresses electromagnetic interference.
Background technology
Printed circuit board (PCB) is as the carrier of each electronic component and signal path, extensive use in various electronic products.Along with the development of electronic technology, the frequency of signal is more and more higher, and this is just so that electromagnetic interference is also more and more serious.And electronic component and cabling are intensive in the printed circuit board (PCB), are the districts occurred frequently of electromagnetic interference, therefore how to limit the electromagnetic interference in the printed circuit board (PCB), have become Electronics Engineer's urgent problem.
The utility model content
The purpose of this utility model is to propose a kind of printed circuit board (PCB) that suppresses electromagnetic interference.
The printed circuit board (PCB) of inhibition electromagnetic interference of the present utility model comprises substrate, described substrate is provided with several different signaling zones of signal frequency, and several access areas corresponding with each signaling zone shape, utilize inductance or magnetic bead to be electrically connected between the described adjacent area.
If printed circuit board (PCB) arranges a ground plane that conforms to the printed circuit board (PCB) shape, will cause the interference signal of each different frequency all to seal in the ground plane, so that electromagnetic interference aggravation, and the utility model all arranges separately corresponding access area for the signaling zone of each different frequency, the interference signal that so just can not cause occurring in the single access area different frequency, in addition, utilize inductance or magnetic bead to be electrically connected between the adjacent area, can be when the current potential that guarantees all access areas be identical, can utilize again the characteristics of inductance or magnetic bead resistance AC signal, prevent that high-frequency interferencing signal is through inductance or magnetic bead propagation.
Further, also utilize electric capacity to connect between the described adjacent area, can select different capacitor's capacities according to concrete signal like this, so that some set specific frequency signal between the adjacent area can be propagated in the contiguous access area by electric capacity, thereby absorb the energy of this set specific frequency signal, avoid the signal of the single-frequency of single access area to disturb too high.
The printed circuit board (PCB) of inhibition electromagnetic interference of the present utility model can the establishment electromagnetic interference, has good practicality.
Description of drawings
Fig. 1 is the structural representation of the printed circuit board (PCB) of inhibition electromagnetic interference of the present utility model.
Embodiment
The below contrasts accompanying drawing, by the description to embodiment, the effect of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and operation principle etc. are described in further detail.
Embodiment 1:
As shown in Figure 1, the printed circuit board (PCB) of the inhibition electromagnetic interference of the present embodiment comprises substrate 1, substrate 1 is provided with several different signaling zones of signal frequency, and several access areas corresponding with each signaling zone shape, for example the second access area 3 in 3K～1MHz scope of first access area 2 of respective signal frequency in 0～1KHz scope, respective signal frequency, respective signal frequency are greater than all utilizing magnetic bead 5 to be electrically connected between 4, the first access areas 2, the 3rd access area of 5MHz, the second access area 3, the 3rd access area 4.
If printed circuit board (PCB) arranges a ground plane that conforms to the printed circuit board (PCB) shape, will cause the interference signal of each different frequency all to seal in the ground plane, so that electromagnetic interference aggravation, and the utility model all arranges separately corresponding access area for the signaling zone of each different frequency, the interference signal that so just can not cause occurring in the single access area different frequency, in addition, utilize magnetic bead to be electrically connected between the adjacent area, can be when the current potential that guarantees all access areas be identical, can utilize again the characteristics of inductance or magnetic bead resistance AC signal, prevent that high-frequency interferencing signal is through inductance or magnetic bead propagation.
In addition, also utilize electric capacity 6 to be connected between the first access area 2 and the 3rd access area 4, can select different capacitor's capacities according to concrete signal like this, so that some characteristic frequency between the adjacent area (for example 10MHZ) signal can be propagated in the first contiguous access area 2 from the 3rd access area 4 by electric capacity, thereby absorb the energy of this set specific frequency signal, avoid the signal of the 10MHZ frequency of the 3rd access area 4 to disturb too high.
Claims (2)
1. printed circuit board (PCB) that suppresses electromagnetic interference, comprise substrate, it is characterized in that described substrate is provided with several different signaling zones of signal frequency, and several access areas corresponding with each signaling zone shape, utilize inductance or magnetic bead to be electrically connected between the described adjacent area.
2. the printed circuit board (PCB) of inhibition electromagnetic interference according to claim 1 is characterized in that also utilizing between the described adjacent area electric capacity to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220365368 CN202738251U (en) | 2012-07-26 | 2012-07-26 | Printed circuit board inhibiting electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220365368 CN202738251U (en) | 2012-07-26 | 2012-07-26 | Printed circuit board inhibiting electromagnetic interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202738251U true CN202738251U (en) | 2013-02-13 |
Family
ID=47663897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220365368 Expired - Fee Related CN202738251U (en) | 2012-07-26 | 2012-07-26 | Printed circuit board inhibiting electromagnetic interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202738251U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028774A (en) * | 2016-07-14 | 2016-10-12 | 贵州航天计量测试技术研究所 | Small EMI filter device capable of suppressing spike noise |
| CN106411420A (en) * | 2016-09-06 | 2017-02-15 | 惠州Tcl移动通信有限公司 | Signal interference elimination circuit and mobile device |
| CN107360668A (en) * | 2017-07-13 | 2017-11-17 | 深圳市志凌伟业技术股份有限公司 | A kind of anti-electromagnetic interference circuit plate and touch-screen |
-
2012
- 2012-07-26 CN CN 201220365368 patent/CN202738251U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028774A (en) * | 2016-07-14 | 2016-10-12 | 贵州航天计量测试技术研究所 | Small EMI filter device capable of suppressing spike noise |
| CN106028774B (en) * | 2016-07-14 | 2019-01-04 | 贵州航天计量测试技术研究所 | A kind of small-sized electromagnetic interface filter device inhibiting spike noise |
| CN106411420A (en) * | 2016-09-06 | 2017-02-15 | 惠州Tcl移动通信有限公司 | Signal interference elimination circuit and mobile device |
| CN107360668A (en) * | 2017-07-13 | 2017-11-17 | 深圳市志凌伟业技术股份有限公司 | A kind of anti-electromagnetic interference circuit plate and touch-screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20130726 |