CN204652500U - A kind of mobile phone antenna performance accentuator structure - Google Patents
A kind of mobile phone antenna performance accentuator structure Download PDFInfo
- Publication number
- CN204652500U CN204652500U CN201520150985.6U CN201520150985U CN204652500U CN 204652500 U CN204652500 U CN 204652500U CN 201520150985 U CN201520150985 U CN 201520150985U CN 204652500 U CN204652500 U CN 204652500U
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- common mode
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- mobile phone
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Abstract
The utility model discloses a kind of mobile phone antenna performance accentuator structure, antenna is provided with in described mobile phone, drive circuit, loud speaker and chip for cell phone, described antenna is connected with chip for cell phone, described loud speaker is connected with drive circuit, described drive circuit is connected with chip for cell phone, it also comprises the anti-jamming circuit be connected between drive circuit and loud speaker, described anti-jamming circuit comprises filter inductance, differential mode capacitor, first common mode capacitance, second common mode capacitance, 3rd common mode capacitance and the 4th common mode capacitance, one end of described filter inductance is connected with drive circuit output, its other end is connected with differential mode capacitor, described second common mode capacitance is in parallel with differential mode capacitor after mutually connecting with the 3rd common mode capacitance, described 3rd common mode capacitance and the 4th common mode capacitance are in parallel with differential mode capacitor after mutually connecting.The utility model adopts a filter inductance can remove the interference of common mode electromagnetism, and adopt the combination of a differential mode capacitor and four common mode capacitance can the High-frequency Interference of filtering very broadband, mobile phone is made to meet the requirement of IEC61000-4-6 standard completely, avoid distorted signals or loss, improve the quality of call.
Description
Technical field
The utility model relates to mobile phone technique field, more particularly, and particularly a kind of mobile phone antenna performance accentuator structure.
Background technology
Mobile phone is widely used communication apparatus, a large amount of power electronic device is employed in the inside of mobile phone, the emc issue of mobile phone is given prominence to display, have impact on the quality of use, namely when antenna for mobile phone receives signal from outward owing to being subject to the impact of electromagnetic interference, make distorted signals or loss, have impact on the quality of call.In recent years, in order to avoid this impact, many producers all devise anti-dry part at speaker, as patent No. technology disclosed in the Chinese patent of 200520112270.8, its tangible speaker devises a kind of inductance to overcome impact, but according to IEC61000-4-6, what interior of mobile phone mainly existed is in 25MHZ, 100MHZ and 0.15MHz ~ 30MHz frequency range.And adopt independent inductance to be difficult to overcome the above-mentioned multiple and electromagnetic interference of depositing.Therefore, be necessary to design a kind of novel mobile phone antenna performance accentuator structure.
Utility model content
The purpose of this utility model is to provide a kind of structure simple and the mobile phone antenna performance accentuator structure that can overcome in multiple frequency range.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of mobile phone antenna performance accentuator structure, antenna is provided with in described mobile phone, drive circuit, loud speaker and chip for cell phone, described antenna is connected with chip for cell phone, described loud speaker is connected with drive circuit, described drive circuit is connected with chip for cell phone, it also comprises the anti-jamming circuit be connected between drive circuit and loud speaker, described anti-jamming circuit comprises filter inductance, differential mode capacitor, first common mode capacitance, second common mode capacitance, 3rd common mode capacitance and the 4th common mode capacitance, one end of described filter inductance is connected with drive circuit output, its other end is connected with differential mode capacitor, described second common mode capacitance is in parallel with differential mode capacitor after mutually connecting with the 3rd common mode capacitance, described 3rd common mode capacitance and the 4th common mode capacitance are in parallel with differential mode capacitor after mutually connecting.
Preferably, described filter inductance is FERRITE CORE inductance.
Preferably, the capacitance of described first common mode capacitance is ten times of the 3rd common mode capacitance, and the capacitance of described second common mode capacitance is ten times of the 4th common mode capacitance.
Compared with prior art, the utility model has the advantage of: the utility model adopts a filter inductance can remove the interference of common mode electromagnetism, and adopt the combination of a differential mode capacitor and four common mode capacitance can the High-frequency Interference of filtering very broadband, mobile phone is made to meet the requirement of IEC61000-4-6 standard completely, avoid distorted signals or loss, improve the quality of call.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of mobile phone antenna performance accentuator structure described in the utility model.
Description of reference numerals: 1, antenna, 2, drive circuit, 3, loud speaker, 4, anti-jamming circuit, 5, chip for cell phone.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection range of the present utility model.
Consult shown in Fig. 1, the utility model provides a kind of mobile phone antenna performance accentuator structure, antenna 1 is provided with in described mobile phone, drive circuit 2, loud speaker 3 and chip for cell phone 5, described antenna 1 is connected with chip for cell phone 5, described loud speaker 3 is connected with drive circuit 2, described drive circuit 2 is connected with chip for cell phone 5, it also comprises the anti-jamming circuit 4 be connected between drive circuit 2 and loud speaker 3, described anti-jamming circuit 4 comprises filter inductance L1, differential mode capacitor C1, first common mode capacitance C2, second common mode capacitance C3, 3rd common mode capacitance C4 and the 4th common mode capacitance C5, one end of described filter inductance L1 is connected with drive circuit 2 output, its other end is connected with differential mode capacitor C1, described second common mode capacitance C3 is in parallel with differential mode capacitor C1 after mutually connecting with the 3rd common mode capacitance C4, it is in parallel with differential mode capacitor C1 after described 3rd common mode capacitance C4 and the 4th common mode capacitance C5 connects mutually.
Concrete, the filter inductance L1 in the utility model is FERRITE CORE inductance, and its inductance value can be 5mH.
Concrete, the capacitance of the first common mode capacitance C2 in the utility model is ten times of the 3rd common mode capacitance C4, the capacitance of described second common mode capacitance C3 is ten times of the 4th common mode capacitance C5, such as the first common mode capacitance C2 and the second common mode capacitance C3 are 45nF, and the 3rd common mode capacitance C4 and the 4th common mode capacitance C5 is 4.5nF.
Design principle of the present utility model is: adopt a filter inductance can remove the interference of common mode electromagnetism, as the interference of 0.15MHz ~ 30MHz frequency, and adopt the combination of a differential mode capacitor and four common mode capacitance can the High-frequency Interference of filtering very broadband, as the interference of 25MHZ, 100MHZ, mobile phone is made to meet the requirement of IEC61000-4-6 standard completely, avoid distorted signals or loss, improve the quality of call.
Although describe execution mode of the present utility model by reference to the accompanying drawings; but patent owner can make various distortion or amendment within the scope of the appended claims; as long as be no more than the protection range described by claim of the present utility model, all should within protection range of the present utility model.
Claims (3)
1. a mobile phone antenna performance accentuator structure, antenna (1) is provided with in described mobile phone, drive circuit (2), loud speaker (3) and chip for cell phone (5), described antenna (1) is connected with chip for cell phone (5), described loud speaker (3) is connected with drive circuit (2), described drive circuit (2) is connected with chip for cell phone (5), it is characterized in that: also comprise the anti-jamming circuit (4) be connected between drive circuit (2) and loud speaker (3), described anti-jamming circuit (4) comprises filter inductance L1, differential mode capacitor C1, first common mode capacitance C2, second common mode capacitance C3, 3rd common mode capacitance C4 and the 4th common mode capacitance C5, one end of described filter inductance L1 is connected with drive circuit (2) output, its other end is connected with differential mode capacitor C1, described second common mode capacitance C3 is in parallel with differential mode capacitor C1 after mutually connecting with the 3rd common mode capacitance C4, it is in parallel with differential mode capacitor C1 after described 3rd common mode capacitance C4 and the 4th common mode capacitance C5 connects mutually.
2. mobile phone antenna performance accentuator structure according to claim 1, is characterized in that: described filter inductance L1 is FERRITE CORE inductance.
3. mobile phone antenna performance accentuator structure according to claim 1, is characterized in that: the capacitance of described first common mode capacitance C2 is ten times of the 3rd common mode capacitance C4, and the capacitance of described second common mode capacitance C3 is ten times of the 4th common mode capacitance C5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520150985.6U CN204652500U (en) | 2015-03-17 | 2015-03-17 | A kind of mobile phone antenna performance accentuator structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520150985.6U CN204652500U (en) | 2015-03-17 | 2015-03-17 | A kind of mobile phone antenna performance accentuator structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204652500U true CN204652500U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520150985.6U Expired - Fee Related CN204652500U (en) | 2015-03-17 | 2015-03-17 | A kind of mobile phone antenna performance accentuator structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204652500U (en) |
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2015
- 2015-03-17 CN CN201520150985.6U patent/CN204652500U/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: 20150916 Termination date: 20180317 |