CN204407520U - Novel mobile phone external antenna circuit - Google Patents
Novel mobile phone external antenna circuit Download PDFInfo
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- CN204407520U CN204407520U CN201520136654.7U CN201520136654U CN204407520U CN 204407520 U CN204407520 U CN 204407520U CN 201520136654 U CN201520136654 U CN 201520136654U CN 204407520 U CN204407520 U CN 204407520U
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- earphone
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- duplexer
- circuit
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Abstract
The utility model belongs to the communications field, and provide a kind of novel mobile phone external antenna circuit, described circuit comprises: duplexer, handset audio circuit and earphone jack interface.Earphone base is detected as plugged earphone and not plugged earphone 2 kinds of states by the circuit that the utility model provides, and is detected by ADC now and detected state is increased to 3 kinds of situations (be respectively not plugged earphone, insert audio earphone, insert external antenna formula earphone).When earphone base interface external antenna inserts, base band (CPU) meeting control antenna switch, switches to earphone base external antenna path by antenna for mobile phone.In order to strengthen the advantage of aerial signal.
Description
Technical field
The utility model belongs to the communications field, particularly relates to a kind of novel mobile phone external antenna circuit.
Background technology
Antenna for mobile phone is the core component of mobile phone, the height of its quality directly affects the performance of mobile phone, existing antenna environment is under undesirable state, and the signal strength signal intensity of antenna is very undesirable, and existing cellphone subscriber cannot by the signal strength signal intensity of oneself hand hoisting antenna for mobile phone.
Summary of the invention
The object of the utility model embodiment is to provide a kind of novel mobile phone external antenna circuit, is intended to solve the problem that existing technical scheme manually cannot improve the signal strength signal intensity of antenna for mobile phone.
On the one hand, provide a kind of novel mobile phone external antenna circuit, described circuit comprises: duplexer, handset audio circuit and earphone jack interface; Wherein,
L channel input port is connected with one end of inductance L 1, and the other end of L1 connects one end of C1, and the other end of C1 connects one end of R1, and the other end of R1 connects one end of inductance L 3, and the other end and earphone jack No. 3 interfaces of L3 are connected;
R channel input port is connected with one end of inductance L 2, and the other end of L2 connects one end of C2, and the other end of C2 connects one end of R2, and the other end of R2 connects the RF2 pin of duplexer;
Radio-frequency antenna connects the RF3 pin of duplexer;
VC1, VD1 pin of duplexer is all connected with power supply interface (power supply interface (VTCX02)), and the VC2 pin of duplexer and BPI bus (BPI BUS 8, namely GPIO controls) connect; VC1 is also connected with one end of C3, the other end ground connection of C3; VC2 is also connected with one end of C4, the other end ground connection of C4;
The RF1 pin of duplexer is connected with one end of C5, C7, the other end ground connection of C5, C7, and RF1 pin is also connected with one end of L4, and the other end and earphone jack No. 2 interfaces of L4 are connected;
MIC interface is connected with one end of L5, and the other end of L5 connects one end of R3, other end frames connecting with headphone jack No. 1 interface of R3;
ADC detects mouth and is connected with one end of R9, other end frames connecting with headphone jack No. 4 interfaces of R9;
Handset audio circuit interface is connected with the other end of R5, R6, and one end of R5 connects one end of R4, other end frames connecting with headphone jack No. 5 interfaces of R4; One end of R6 connects the other end of L5.
Optionally, described antenna circuit also comprises: protective circuit, and this protective circuit comprises: adjustable resistance RT1-RT3 and resistance; Wherein, one end of RT1 is connected with one end of L3, the other end ground connection of RT1, and one end of RT2 is connected with one end of L4, the other end ground connection of RT2; One end of RT3 is connected with MIC interface, the other end ground connection of RT3; One section of resistance R7 is connected with one end of L3, the other end ground connection of R3; One end of resistance R8 is connected with one end of L4, the other end ground connection of R8.
In the utility model embodiment, the technical scheme that the utility model provides provides a kind of brand-new antenna circuit, earphone base is detected as plugged earphone and not plugged earphone 2 kinds of states, detected by ADC now that detected state to be increased to 3 kinds of situations (be not plugged earphone respectively, insert audio earphone, insert external antenna formula earphone).When earphone base interface external antenna inserts, base band (CPU) meeting control antenna switch, switches to earphone base external antenna path by antenna for mobile phone.In order to strengthen the advantage of aerial signal.
Accompanying drawing explanation
The structural representation of the novel mobile phone external antenna circuit that Fig. 1 provides for the utility model.
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.
The utility model embodiment provides a kind of novel mobile phone external antenna circuit, and this circuit as shown in Figure 1, comprising: duplexer 10, handset audio circuit and earphone jack interface; Wherein,
(AUHPL) is connected with one end of inductance L 1 in L channel input port, and the other end of L1 connects one end of C1, and the other end of C1 connects one end of R1, and the other end of R1 connects one end of inductance L 3, and the other end and earphone jack No. 3 interfaces of L3 are connected;
(AUHPR) is connected with one end of inductance L 2 in R channel input port, and the other end of L2 connects one end of C2, and the other end of C2 connects one end of R2, and the other end of R2 connects duplexer 10(model RF1620) RF2 pin;
Radio-frequency antenna (RF ANT) connects the RF3 pin of duplexer 10;
VC1, VD1 pin of duplexer 10 is all connected with power supply interface (VTCX02), and the VC2 pin of duplexer 10 and BPI bus (BPI BUS 8, namely GPIO controls) connect; VC1 is also connected with one end of C3, the other end ground connection of C3; VC2 is also connected with one end of C4, the other end ground connection of C4;
The RF1 pin of duplexer 10 is connected with one end of C5, C7, the other end ground connection of C5, C7, and RF1 pin is also connected with one end of L4, and the other end and earphone jack No. 2 interfaces of L4 are connected;
MIC(Mike) interface is connected with one end of L5, and the other end of L5 connects one end of R3, other end frames connecting with headphone jack No. 1 interface of R3;
ADC(digital simulation) detect mouth and be connected with one end of R9, other end frames connecting with headphone jack No. 4 interfaces of R9;
Handset audio circuit interface is connected with the other end of R5, R6, and one end of R5 connects one end of R4, other end frames connecting with headphone jack No. 5 interfaces of R4; One end of R6 connects the other end of L5.
The technical scheme that utility model provides provides a kind of brand-new antenna circuit, earphone base is detected as plugged earphone and not plugged earphone 2 kinds of states, detected by ADC now and detected state is increased to 3 kinds of situations (be respectively not plugged earphone, insert audio earphone, insert external antenna formula earphone).When earphone base interface external antenna inserts, base band (CPU) meeting control antenna switch, switches to earphone base external antenna path by antenna for mobile phone.In order to strengthen the advantage of aerial signal.
Optionally, foregoing circuit also comprises: protective circuit, and this protective circuit comprises: adjustable resistance RT1-RT3 and resistance; Wherein, one end of RT1 is connected with one end of L3, the other end ground connection of RT1, and one end of RT2 is connected with one end of L4, the other end ground connection of RT2; One end of RT3 is connected with MIC interface, the other end ground connection of RT3; One section of resistance R7 is connected with one end of L3, the other end ground connection of R3; One end of resistance R8 is connected with one end of L4, the other end ground connection of R8.
By arranging protective circuit, can the fail safe of extraordinary protective circuit, reach the advantage improving fail safe.
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 novel mobile phone external antenna circuit, is characterized in that, described circuit comprises: duplexer, handset audio circuit and earphone jack interface; Wherein,
L channel input port is connected with one end of inductance L 1, and the other end of L1 connects one end of C1, and the other end of C1 connects one end of R1, and the other end of R1 connects one end of inductance L 3, and the other end and earphone jack No. 3 interfaces of L3 are connected;
R channel input port is connected with one end of inductance L 2, and the other end of L2 connects one end of C2, and the other end of C2 connects one end of R2, and the other end of R2 connects the RF2 pin of duplexer;
Radio-frequency antenna connects the RF3 pin of duplexer;
VC1, VD1 pin of duplexer is all connected with power supply interface, and the VC2 pin of duplexer is connected with BPI bus; VC1 is also connected with one end of C3, the other end ground connection of C3; VC2 is also connected with one end of C4, the other end ground connection of C4;
The RF1 pin of duplexer is connected with one end of C5, C7, the other end ground connection of C5, C7, and RF1 pin is also connected with one end of L4, and the other end and earphone jack No. 2 interfaces of L4 are connected;
MIC interface is connected with one end of L5, and the other end of L5 connects one end of R3, other end frames connecting with headphone jack No. 1 interface of R3;
ADC detects mouth and is connected with one end of R9, other end frames connecting with headphone jack No. 4 interfaces of R9;
Handset audio circuit interface is connected with the other end of R5, R6, and one end of R5 connects one end of R4, other end frames connecting with headphone jack No. 5 interfaces of R4; One end of R6 connects the other end of L5.
2. novel mobile phone external antenna circuit according to claim 1, it is characterized in that, described antenna circuit also comprises: protective circuit, and this protective circuit comprises: adjustable resistance RT1-RT3 and resistance; Wherein, one end of RT1 is connected with one end of L3, the other end ground connection of RT1, and one end of RT2 is connected with one end of L4, the other end ground connection of RT2; One end of RT3 is connected with MIC interface, the other end ground connection of RT3; One section of resistance R7 is connected with one end of L3, the other end ground connection of R3; One end of resistance R8 is connected with one end of L4, the other end ground connection of R8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520136654.7U CN204407520U (en) | 2015-03-11 | 2015-03-11 | Novel mobile phone external antenna circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520136654.7U CN204407520U (en) | 2015-03-11 | 2015-03-11 | Novel mobile phone external antenna circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204407520U true CN204407520U (en) | 2015-06-17 |
Family
ID=53431357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520136654.7U Expired - Fee Related CN204407520U (en) | 2015-03-11 | 2015-03-11 | Novel mobile phone external antenna circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204407520U (en) |
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2015
- 2015-03-11 CN CN201520136654.7U patent/CN204407520U/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: 20190311 |