CN205249607U - Anti wave interference circuit board - Google Patents
Anti wave interference circuit board Download PDFInfo
- Publication number
- CN205249607U CN205249607U CN201521029640.1U CN201521029640U CN205249607U CN 205249607 U CN205249607 U CN 205249607U CN 201521029640 U CN201521029640 U CN 201521029640U CN 205249607 U CN205249607 U CN 205249607U
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Abstract
The utility model discloses an anti wave interference circuit board, including the work antenna, still include anti -interference antenna, anti -interference antenna signal input part with publicly connect, anti -interference antenna with the work antenna lies in the not edge of homonymy of circuit board, publicly and be equipped with shielding copper layer between the work antenna input. Set up an anti -interference antenna on the circuit board, the signal input part that makes the work antenna with publicly between the impedance that exists be greater than anti -interference antenna signal input part and publicly between the impedance time, according to the impedance match principle, the interfering signal of the existence anti -interference antenna that will lead in publicly, and can not follow and publicly flow into the work antenna. Like this, interfering signal gets into anti -interference antenna, has reduced the interference of interfering signal to the work antenna.
Description
Technical field
The utility model relates to board design field, particularly a kind of anti-wave interference circuit board.
Background technology
The at present application of circuit board is more and more extensive, and because the function application chip of circuit board is more and more, its various base band radio frequency chips are integrated on same circuit board mainboard, causes the electromagnetism of circuit board mainboard to disturb mutually very outstanding of problem. going up publicly of circuit board, we often can measure the interfering signal of different spectral, these interfering signals again taking mainboard as aerial radiation out, some frequency has dropped in the frequency band of work antenna, has brought very large interference to work aerial signal. this is also that people often test and find that the power sensitivity of testing lines is normal in project, but the reason that index is very poor is but found in the OTA test that is coupled. in circuit board terminal R&D process, a lot of going up publicly of terminal project mainboard can measure interfering signal, these interfering signals have in radio frequency operation frequency range band, interfering signal by eradiation out, affect the coupling performance of terminal, radiation areas are very near apart from aerial position, once the inband signaling that radiation is come is stronger, will be very large on radio performance of terminal impact, produce effects very little by radio frequency debugging method to the improvement of this problem, this class fault is also the normal property the sent out fault that current intelligent terminal faces, when fault is serious, even have influence on the success or failure of project. the interference of circuit board work antenna has brought a lot of puzzlements to terminal project, solves also very thorny. application number is the circuit board that 2013105052347 Chinese utility model patent discloses a kind of anti-wave interference before the applying date, and it arranges anti-interference antenna and receives interfering signal on circuit board, avoids interference effect of signals work antenna. but the prior art antijamming capability a little less than, can not meet the anti-interference function of high-power product.
Utility model content
In view of this, the utility model discloses a kind of anti-interference circuit board that can Chinese People's Anti-Japanese Military and Political College's power disturbance signal.
The purpose of this utility model is achieved through the following technical solutions: a kind of anti-wave interference circuit board, comprise work antenna, also comprise anti-interference antenna, described anti-interference antenna signal input part be connected publicly; Described anti-interference antenna and described work antenna are positioned at circuit board not on the edge of homonymy, between publicly described and work antenna input, are provided with shielding copper layer.
The utility model arranging and shield copper layer publicly and between the input of work antenna, can shield the interfering signal producing publicly especially, further improves the interference free performance of work antenna.
Further described shielding copper layer is communicated with the input of described anti-interference antenna.
The input UNICOM of shielding copper layer and anti-interference antenna, making to shield copper layer becomes one of input of anti-interference antenna, can further improve anti-interference antenna to the receiving efficiency of interfering signal publicly, raising anti-jamming effectiveness.
Further, described shielding copper layer is provided with the lower cancave cambered surface of lattice-like towards a side publicly.
The lower cancave cambered surface of lattice-like can improve the surface area of shielding copper layer, improves the shield effectiveness of interfering signal.
Further, work antenna signal input part with publicly between existence impedance be greater than the signal input part of anti-interference antenna and publicly between impedance, described work antenna is monopole antenna, can select any existing techniques in realizing.
Further, the resonant frequency of described anti-interference antenna falls in described work antenna frequency acceptance band; Described anti-interference antenna is provided with resonant frequency circuit for regulating and controlling.
Further, the polarised direction of described work antenna and described anti-interference antenna is mutually vertical.
Preferably, described anti-interference antenna and described work antenna are positioned at circuit board not on the edge of homonymy.
The utility model proposes one utilizes mainboard publicly as the radiating antenna of interfering signal, when mainboard is being worked due to the various devices on mainboard publicly, can produce different interfering signals, the interfering signal of different frequency all flows to publicly, will give off publicly a large amount of interference, when work antenna has when closer publicly, the radiation producing publicly, particularly its medium frequency drops in work operating frequency of antenna band, especially when signal is more intense, the signal of these interference will enter work antenna by the signal input part of work antenna work antenna is caused to interference. an anti-interference antenna is set on circuit board, make the signal input part of work antenna and publicly between exist impedance be greater than the signal input part of anti-interference antenna and publicly between impedance time, according to impedance matching principle, the interfering signal anti-interference antenna that will lead existing publicly, and can be from not flowing to publicly work antenna. like this, interfering signal enters anti-interference antenna, has reduced the interference of interfering signal to work antenna. for make the signal input part of work antenna and publicly between impedance large as much as possible, make the ground of work antenna and work antenna signal input part do not have conducting (namely work antenna signal input part and publicly between have larger impedance, thereby mainboard interfering signal publicly can be from not flowing to work antenna publicly), so just can better allow interfering signal publicly flow to anti-interference antenna, thereby reduce the impact on work antenna. for example, when the antenna of working is monopole antenna, because monopole antenna does not have grounding pin, the antenna of working does not in other words have and conducting publicly, and its impedance is relatively large. it not can not obtain relatively large impedance with conducting publicly other various antennas, makes interfering signal publicly flow to anti-interference antenna. further, for make the signal input part of anti-interference antenna and publicly between impedance as much as possible little, as long as be in the utility model, make the signal input part of anti-interference antenna and circuit board publicly between impedance be less than the signal input part of this work antenna and circuit board publicly between impedance just can make interfering signal guiding anti-interference antenna. so meeting under above-mentioned condition, due to mainboard interfering signal publicly can flow to mainboard the anti-interference antenna that is connected, anti-interference antenna is equivalent to mainboard resonant frequency load publicly, by the anti-interference antenna interfering signal that mainboard goes up publicly of releasing, therefore can increase suitable load resistance in the mating end of anti-interference antenna, ensureing, on the flow direction basis of interfering signal, to consume the energy of interfering signal, reduce the radiation intensity of interfering signal. particularly can make the ground of working day line and work antenna signal input part connect conducting (namely anti-interference antenna signal input part and publicly between have less impedance, thereby mainboard interfering signal publicly can be from flowing to anti-interference antenna publicly), so just can better allow interfering signal publicly flow to anti-interference antenna, thereby reduce the impact on work antenna.
Brief description of the drawings
Fig. 1 is the utility model anti-interference circuit board principle schematic.
Fig. 2 is the partial enlarged drawing of shielding copper layer
Detailed description of the invention
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
Embodiment 1
As depicted in figs. 1 and 2, the utility model provides a kind of anti-interference circuit board, comprise work antenna 1, further be provided with anti-interference antenna 3, the impedance between 2 publicly of the signal input part of this work antenna and circuit board be greater than the signal input part of this anti-interference antenna and circuit board publicly between impedance. Described publicly 2 and work antenna 1 input between be provided with shielding copper layer 4.
Described shielding copper layer 4 is communicated with the input of described anti-interference antenna 3.
Described shielding copper layer 4 is provided with the lower cancave cambered surface 41 of lattice-like towards a side publicly.
Described work antenna is monopole antenna.
The resonant frequency of described anti-interference antenna falls in described work antenna frequency acceptance band; Described anti-interference antenna is provided with resonant frequency circuit for regulating and controlling.
The polarised direction of described work antenna and described anti-interference antenna is mutually vertical.
Described anti-interference antenna and described work antenna are positioned at circuit board plate not on the edge of homonymy.
The present embodiment proposes one and utilizes mainboard 2 radiating antennas as interfering signal publicly, mainboard publicly 2 due to the various devices on mainboard work in, can produce different interfering signals, the interfering signal of different frequency all flows to publicly 2, 2 will give off a large amount of interference publicly, when work antenna 1 has publicly 2 when closer, 2 radiation that produce publicly, particularly its medium frequency drops in work operating frequency of antenna band, especially when signal is more intense, the signal of these interference will enter work antenna 1 by the signal input part of work antenna 1 work antenna 1 is caused to interference. an anti-interference antenna 3 is set on circuit board, the impedance that makes the signal input part of work antenna 1 and exist between 2 is publicly greater than the signal input part of anti-interference antenna 3 and publicly when the impedance between 2, according to impedance matching principle, the interfering signal existing in the 2 publicly anti-interference antenna 3 that will lead, and can be from 2 not flowing to work antenna 1 publicly. like this, interfering signal enters anti-interference antenna 3, has reduced the interference of interfering signal to work antenna 1. shielding copper layer 4 can improve the shield effectiveness of the interfering signal to producing publicly further.
Be more than wherein specific implementation of the present utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims. It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these apparent replacement forms all belong to protection domain of the present utility model.
Claims (7)
1. an anti-wave interference circuit board, comprises work antenna, also comprises anti-interference antenna, described anti-interference antenna signal input part be connected publicly; Described anti-interference antenna and described work antenna are positioned at circuit board not on the edge of homonymy, it is characterized in that: between publicly described and work antenna input, be provided with shielding copper layer.
2. anti-wave interference circuit board according to claim 1, is characterized in that: described shielding copper layer is communicated with the input of described anti-interference antenna.
3. anti-wave interference circuit board according to claim 1 and 2, is characterized in that: described shielding copper layer is provided with the lower cancave cambered surface of lattice-like towards a side publicly.
4. according to the anti-wave interference circuit board described in claim 1 or 2, it is characterized in that: work antenna signal input part with publicly between existence impedance be greater than the signal input part of anti-interference antenna and publicly between impedance; Described work antenna is monopole antenna.
5. anti-wave interference circuit board according to claim 3, is characterized in that: the resonant frequency of described anti-interference antenna falls in described work antenna frequency acceptance band; Described anti-interference antenna is provided with resonant frequency circuit for regulating and controlling.
6. anti-wave interference circuit board according to claim 5, is characterized in that: the polarised direction of described work antenna and described anti-interference antenna is mutually vertical.
7. anti-wave interference circuit board according to claim 6, is characterized in that: described anti-interference antenna and described work antenna are positioned at circuit board plate not on the edge of homonymy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521029640.1U CN205249607U (en) | 2015-12-11 | 2015-12-11 | Anti wave interference circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521029640.1U CN205249607U (en) | 2015-12-11 | 2015-12-11 | Anti wave interference circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205249607U true CN205249607U (en) | 2016-05-18 |
Family
ID=55948665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521029640.1U Active CN205249607U (en) | 2015-12-11 | 2015-12-11 | Anti wave interference circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205249607U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118137144A (en) * | 2024-05-07 | 2024-06-04 | 中兴通讯股份有限公司 | Guiding device and FTTR network group equipment |
-
2015
- 2015-12-11 CN CN201521029640.1U patent/CN205249607U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118137144A (en) * | 2024-05-07 | 2024-06-04 | 中兴通讯股份有限公司 | Guiding device and FTTR network group equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |