CN204408352U - Mobile phone radio frequency signal anti-clutter circuit - Google Patents
Mobile phone radio frequency signal anti-clutter circuit Download PDFInfo
- Publication number
- CN204408352U CN204408352U CN201520018685.2U CN201520018685U CN204408352U CN 204408352 U CN204408352 U CN 204408352U CN 201520018685 U CN201520018685 U CN 201520018685U CN 204408352 U CN204408352 U CN 204408352U
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- filter capacitor
- output
- signal
- signal line
- mobile phone
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Abstract
The utility model provides a kind of mobile phone radio frequency signal anti-clutter circuit, be connected between the output of positive signal line SIGNAL_P and the output of negative signal line SIGNAL_N, it includes the first filter capacitor C1, the second filter capacitor C2 and the 3rd filter capacitor C3, the positive pole of described first filter capacitor C1 connects the output of positive signal line SIGNAL_P, and negative pole connects the output of negative signal line SIGNAL_N; The positive pole of the second filter capacitor C2 connects the output of positive signal line SIGNAL_P, minus earth; The plus earth of the 3rd filter capacitor C3, negative pole connects the output of negative signal line SIGNAL_N.This circuit is arranged between the wire rod output of instrument and equipment connection, and it is by the coupling grounding filter capacitor of setting, effectively eliminates mobile phone radio frequency signal to the interference of audio signal.The utility model circuit structure is simple, minimum to the change of instrument and equipment, and it has advantages such as producing easily, the low and anti-jamming effectiveness of cost is good.
Description
Technical field
The utility model relates to anti-clutter circuit, and what be specifically related to is a kind of mobile phone radio frequency signal anti-clutter circuit.
Background technology
The transmit signal power of the mobile communication equipments such as mobile phone is very large, when mobile phone is near pertinent instruments, electronic equipment, very large interference be produced to connecting the signal transmitted in this kind equipment wire rod, particularly to the interference of medical treatment electronic equipment, can be had a strong impact on it and normally use.
For mobile phone, its usual 217HZ of interference signal produced, for the wire rod that instrument and equipment connects, in order to avoid the interference of mobile phone radio frequency signal, can adopt the wire netting of ground connection or metallic film parcel to shield anti-interference to realize usually.But the drawback of method adopting wire netting or the shielding of metallic film parcel makes wire rod thicker, can increase production difficulty and production cost, and if the imperfect words of parcel operation, also cannot reach corresponding shield effectiveness.
Utility model content
For this reason, the purpose of this utility model is to provide a kind of mobile phone radio frequency signal anti-clutter circuit, adopts wire netting or metallic film parcel to shield anti-interference, there is the problem that production difficulty is large, production cost is high and anti-jamming effectiveness is bad to solve existing wire rod.
The purpose of this utility model is achieved through the following technical solutions.
A kind of mobile phone radio frequency signal anti-clutter circuit, be connected between the output of positive signal line SIGNAL_P and the output of negative signal line SIGNAL_N, it includes the first filter capacitor C1, the second filter capacitor C2 and the 3rd filter capacitor C3, the positive pole of described first filter capacitor C1 connects the output of positive signal line SIGNAL_P, and negative pole connects the output of negative signal line SIGNAL_N; The positive pole of the second filter capacitor C2 connects the output of positive signal line SIGNAL_P, minus earth; The plus earth of the 3rd filter capacitor C3, negative pole connects the output of negative signal line SIGNAL_N.
Further, described first filter capacitor C1 is 100PF, and the second filter capacitor C2 and the 3rd filter capacitor C3 is 33PF.
The utility model compared with prior art, beneficial effect is: the mobile phone radio frequency signal anti-clutter circuit that the utility model provides, be arranged on instrument and equipment connect wire rod output between, it is by the coupling grounding filter capacitor of setting, effectively eliminates mobile phone radio frequency signal to the interference of audio signal.The utility model circuit structure is simple, minimum to the change of instrument and equipment, and it has advantages such as producing easily, the low and anti-jamming effectiveness of cost is good.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model mobile phone radio frequency signal anti-clutter circuit.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to shown in Fig. 1, Fig. 1 is the circuit theory diagrams of the utility model mobile phone radio frequency signal anti-clutter circuit.The present embodiment provides a kind of mobile phone radio frequency signal anti-clutter circuit, and it is mainly for the Radio Frequency Interfere of the mobile communication equipments such as mobile phone, to the output line material of some instrument and equipments produce the problem of interference.Because the radiofrequency signal operating frequency of the mobile communication equipments such as mobile phone is changeless, normally frequency is the interference signal of 217Hz.The present embodiment adds coupling grounding filter capacitor by the wire rod output at instrument and equipment, and suitably arranges the capacitance of electric capacity, thus reaches effective mobile phone radio frequency signal of eliminating to the object of the interference of audio signal.
Between the output that the circuit that wherein the present embodiment specifically comprises is connected to the positive signal line SIGNAL_P of instrument and equipment and the output of negative signal line SIGNAL_N.
Mobile phone radio frequency signal anti-clutter circuit described in the present embodiment includes the first filter capacitor C1, the second filter capacitor C2 and the 3rd filter capacitor C3, described first filter capacitor C1 is 100PF, its positive pole connects the output of positive signal line SIGNAL_P, and negative pole connects the output of negative signal line SIGNAL_N.
Second filter capacitor C2 is that 33PF sees, its positive pole connects the output of positive signal line SIGNAL_P, minus earth.
3rd filter capacitor C3 is 33PF, its plus earth, and negative pole connects the output of negative signal line SIGNAL_N.
In sum, the utility model by adding coupling grounding filter capacitor at wire rod output, and suitably arranges the capacitance of electric capacity, thus effectively can reduce and eliminate the interference of mobile phone radio frequency signal to instrument and equipment.This circuit has the advantages such as volume is little, cost is low, convenient production, and can debug separately for specific interfering frequency.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (2)
1. a mobile phone radio frequency signal anti-clutter circuit, it is characterized in that: be connected between the output of positive signal line SIGNAL_P and the output of negative signal line SIGNAL_N, it includes the first filter capacitor C1, the second filter capacitor C2 and the 3rd filter capacitor C3, the positive pole of described first filter capacitor C1 connects the output of positive signal line SIGNAL_P, and negative pole connects the output of negative signal line SIGNAL_N; The positive pole of the second filter capacitor C2 connects the output of positive signal line SIGNAL_P, minus earth; The plus earth of the 3rd filter capacitor C3, negative pole connects the output of negative signal line SIGNAL_N.
2. mobile phone radio frequency signal anti-clutter circuit as claimed in claim 1, it is characterized in that: described first filter capacitor C1 is 100PF, the second filter capacitor C2 and the 3rd filter capacitor C3 is 33PF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520018685.2U CN204408352U (en) | 2015-01-12 | 2015-01-12 | Mobile phone radio frequency signal anti-clutter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520018685.2U CN204408352U (en) | 2015-01-12 | 2015-01-12 | Mobile phone radio frequency signal anti-clutter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204408352U true CN204408352U (en) | 2015-06-17 |
Family
ID=53432182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520018685.2U Expired - Fee Related CN204408352U (en) | 2015-01-12 | 2015-01-12 | Mobile phone radio frequency signal anti-clutter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204408352U (en) |
-
2015
- 2015-01-12 CN CN201520018685.2U patent/CN204408352U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20180112 |