CN101047334B - Common power supply anti-interference power supply method and circuit for hand transmitting equipment - Google Patents
Common power supply anti-interference power supply method and circuit for hand transmitting equipment Download PDFInfo
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- CN101047334B CN101047334B CN2006100601530A CN200610060153A CN101047334B CN 101047334 B CN101047334 B CN 101047334B CN 2006100601530 A CN2006100601530 A CN 2006100601530A CN 200610060153 A CN200610060153 A CN 200610060153A CN 101047334 B CN101047334 B CN 101047334B
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Abstract
A shared power supply anti-interference supplying method of hand emitting device includes using the first DC conversion circuit to convert voltage inputted by power supply to be voltage required by radio frequency power amplification circuit and emitting module of said device, forming filter link by capacity and inductance and supplying power to said circuit and said module through formed filter link, using supplying power to said circuit and said module through formed filter link, using the second DC conversion circuit to convert inputted power supply voltage to be voltage required by the other parts of said device.
Description
Technical field the present invention relates to the method for supplying power to of miniaturized electronics, relates in particular to the Method and circuits of common DC power supply source in the equipment.
The background technology prior art contains the handheld device of emission system, generally all adopts same power supply to power to whole system, but fact proved that the quality good or not that transmits has inseparable getting in touch with power supply.When the shared power supply of whole system, the interference source of system also can enter radiating portion, causes the signal noise of launching very big, even use filtering system at receiving terminal, because the noise frequency that launches is unfixing, also be difficult to this part noise of filtering, the ratio of can not controlledly effectively making an uproar.The summary of the invention the technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part and proposes a kind of common power supply anti-interference power supply method that is used for hand transmitting equipment and circuit improving transmission signal quality, the reduction property ratio of making an uproar.
The present invention solve the technical problem by realizing by the following technical solutions:
A kind of common power supply anti-interference power supply method that is used for hand transmitting equipment comprises that a kind of power supply source as input, especially, comprises step:
1. by first DC transfer circuit, be the transmitter module and the required voltage of rf power amplifier circuit of described equipment with the power supply source voltage transformation of importing;
2. form the voltage output end that the filtering link is connected described first DC transfer circuit with electric capacity, inductance, via powering to transmitter module and rf power amplifier circuit again after this filtering link, be coupled to each front stage circuits via power supply source to stop radio-frequency component;
3. by second DC transfer circuit, be other each several part of described equipment, comprise the supply power voltage that data processing circuit is required the power supply source voltage transformation of importing.
A kind of anti-interference power supply circuits of common source that are used for hand transmitting equipment especially, comprising:
1. first DC transfer circuit is the transmitter module and the required voltage of rf power amplifier circuit of described equipment with the power supply source voltage transformation of importing;
2. capacitor and inductor filtering link is connected in after first DC transfer circuit, exports the first voltage V
DD-FMSupply with the transmitter module and the rf power amplifier circuit of described equipment;
3. second DC transfer circuit is exported the second voltage V
DD-I/OSupply with other each several part of described equipment, comprise the supply power voltage that data processing circuit is required.
Compare with prior art, common power supply anti-interference power supply method and circuit that the present invention is used for hand transmitting equipment have effectively improved transmission signal quality, the reduction property ratio of making an uproar.
Description of drawings Fig. 1 is that the present invention is used for the common power supply anti-interference power supply method of hand transmitting equipment and the structural representation of circuit;
Fig. 2 is the circuit theory diagrams that the present invention is used for the common power supply anti-interference power supply method of hand transmitting equipment,
Fig. 2-the 1st wherein, the described circuit diagram of selecting a gating circuit 3 and first DC transfer circuit 4 and rf filtering link 7; Fig. 2-the 2nd, the circuit diagram of described second DC transfer circuit 5; Fig. 2-the 3rd, the circuit diagram of described transmitter module 8 and rf power amplifier circuit 9.
The invention will be further described below in conjunction with the most preferred embodiment shown in the accompanying drawing for embodiment:
The present invention realizes by adopting following technical scheme:
As shown in Figure 1, a kind of common power supply anti-interference power supply method that is used for hand transmitting equipment comprises and determines at least a power supply source input, especially, comprises step:
1. by first DC transfer circuit 4, be the required voltage of described equipment transmitter module 8 and rf power amplifier circuit 9 with the power supply source voltage transformation of input;
2. form the voltage output end that filtering link 7 is connected described first DC transfer circuit 4 with electric capacity, inductance, via powering to transmitter module 8 and rf power amplifier circuit 9 again after this filtering link 7, be coupled to each front stage circuits via power supply source to stop radio-frequency component;
3. by second DC transfer circuit 5, be other each several part of described equipment, comprise the supply power voltage that data processing circuit is required the power supply source voltage transformation of importing.
Under the situation that might be more than a kind of power supply source input, as Fig. 1, shown in, be provided with and select a gating circuit 3, make sure and at any time have only a kind of power supply source via these gating circuit 3 output voltages.
As shown in Figure 1, a kind of anti-interference power supply circuits of common source that are used for hand transmitting equipment especially, comprising:
1. first DC transfer circuit 4 is the required voltage of described equipment transmitter module 8 and rf power amplifier circuit 9 with the power supply source voltage transformation of input;
2. capacitor and inductor filtering link 7 is connected in after first DC transfer circuit 4 output voltage V
DD-FMSupply with the transmitter module 8 and the rf power amplifier circuit 9 of described equipment;
3. second DC transfer circuit 5, output voltage V
DD-I/OSupply with other each several part of described equipment, comprise the supply power voltage that data processing circuit is required.
As shown in Figure 1, comprise also and select a gating circuit 3 that it guarantees at any time have only a kind of power supply source via these gating circuit 3 output voltages.
As shown in Figure 2, the described gating circuit 3 of selecting comprises transistor Q1 and diode D1, and the drain electrode d of transistor Q1 connects battery positive voltage V
DD-BAT, the source S of Q1 connects the negative electrode of diode D1 and the voltage input end of first DC transfer circuit 4, and the grid g of transistor Q1 connects the anode of USB-Vcc voltage and diode D1.
Described first, second DC transfer circuit the 4, the 5th, the linear voltage-stabilizing device LDO of low pressure.
Described capacitor and inductor filtering link 7 is the Γ type rf filtering joints that comprise capacitor C 4 and inductance L 2.
As shown in Figure 2, most preferred embodiment of the present invention, transmitter module U3 adopts GFT808, i.e. voice modulation wireless transmission integrated circuit; U1 is S-1200, the i.e. LDO of a voltage-dropping type, PIN 1 is a power input, come LDO power supply by lithium battery or external 5V DC power supply in this example, when outside when connecting direct current 5V power supply, metal-oxide-semiconductor Q1 will be not can conducting, direct current is by powering to LDO behind the diode D1, producing 3.3V voltage by LDO, is the tantalum electric capacity of 10 a μ F at the output C4 of U1, can constitute good filter network with inductance L 2.Q2 is a high frequency amplifier tube, and the radio frequency output signal of transmitter module U3 is amplified, and delivers to FM transmission antenna FMT-ANT through coupling capacitance C3, makes its operating distance can reach 10 meters.The PIN8 of U2, PIN10 are the inputs of audio signal.PIN2 PIN3 PIN4 be the Serial Control bus, be used for and the communicating by letter of controller.U2 also is the i.e. LDO of a voltage-dropping type of S-1200 integrated circuit, be used to system that power supply is provided, during when external+5V adapter or by the power supply of USB power line, triode Q6 conducting, the PIN 3 of U2 is a low level at this moment, U2 does not power, and system will be by external+5V adapter or the power supply of USB power line, when whole system starts, owing to there is button to press, can make triode Q7 conducting, Q4 is conducting also, and lithium battery will be powered to system by U2.
Claims (7)
1. a common power supply anti-interference power supply method that is used for hand transmitting equipment comprises and determines that a kind of power supply source as input, is characterized in that, comprises step:
1. by first DC transfer circuit (4), be the transmitter module (8) and the required voltage of rf power amplifier circuit (9) of described equipment with the power supply source voltage transformation of importing;
2. form the voltage output end that filtering link (7) is connected described first DC transfer circuit (4) with electric capacity, inductance, afterwards again to transmitter module (8) and rf power amplifier circuit (9) power supply, be coupled to each front stage circuits via power supply source via this filtering link (7) to stop radio-frequency component;
3. by second DC transfer circuit (5), be other each several part of described equipment, comprise the supply power voltage that data processing circuit is required the power supply source voltage transformation of importing.
2. the common power supply anti-interference power supply method that is used for hand transmitting equipment as claimed in claim 1, it is characterized in that: under the situation that might be more than a kind of power supply source input, a gating circuit (3) is selected in setting, make sures and at any time has only a kind of power supply source via this gating circuit (3) output voltage.
3. the anti-interference power supply circuits of common source that are used for hand transmitting equipment is characterized in that, comprising:
1. first DC transfer circuit (4) is the transmitter module (8) and the required voltage of rf power amplifier circuit (9) of described equipment with the power supply source voltage transformation of importing;
2. capacitor and inductor filtering link (7) is connected in first DC transfer circuit (4) afterwards, exports the first voltage (V
DD-FM) supply with the transmitter module (8) and the rf power amplifier circuit (9) of described equipment;
3. second DC transfer circuit (5) is exported the second voltage (V
DD-I/O) supply with other each several part of described equipment, comprise the supply power voltage that data processing circuit is required.
4. the anti-interference power supply circuits of common source that are used for hand transmitting equipment as claimed in claim 3 is characterized in that:
Comprise also and select a gating circuit (3) that it guarantees at any time have only a kind of power supply source via this gating circuit (3) output voltage.
5. the anti-interference power supply circuits of common source that are used for hand transmitting equipment as claimed in claim 4 is characterized in that:
The described gating circuit (3) of selecting comprises transistor (Q1) and diode (D1), and the drain electrode (d) of transistor (Q1) connects battery positive voltage (V
DD-BAT), the source electrode (s) of transistor (Q1) connects the negative electrode of diode (D1) and the voltage input end of first DC transfer circuit (4), and the grid (g) of transistor (Q1) connects the anode of USB interface supply voltage (USB-Vcc) and diode (D1).
6. the anti-interference power supply circuits of common source that are used for hand transmitting equipment as claimed in claim 3 is characterized in that:
Described first, second DC transfer circuit (4,5) is the linear voltage-stabilizing device LDO of low pressure.
7. the anti-interference power supply circuits of common source that are used for hand transmitting equipment as claimed in claim 3 is characterized in that:
Described capacitor and inductor filtering link (7) is the Γ type rf filtering joint that comprises electric capacity (C4) and inductance (L2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100601530A CN101047334B (en) | 2006-03-31 | 2006-03-31 | Common power supply anti-interference power supply method and circuit for hand transmitting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100601530A CN101047334B (en) | 2006-03-31 | 2006-03-31 | Common power supply anti-interference power supply method and circuit for hand transmitting equipment |
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| Publication Number | Publication Date |
|---|---|
| CN101047334A CN101047334A (en) | 2007-10-03 |
| CN101047334B true CN101047334B (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100601530A Active CN101047334B (en) | 2006-03-31 | 2006-03-31 | Common power supply anti-interference power supply method and circuit for hand transmitting equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013104292A1 (en) * | 2012-01-09 | 2013-07-18 | 华为终端有限公司 | Terminal power supply circuit and multi-mode data card |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811082B (en) * | 2015-05-04 | 2017-07-11 | 中国电子科技集团公司第二十四研究所 | A kind of nanosecond rising edge pulse power supply |
| CN107682032B (en) * | 2017-09-26 | 2019-09-17 | Oppo广东移动通信有限公司 | Voltage regulator circuit, RF front-end module and terminal |
| CN111880063B (en) * | 2020-07-28 | 2022-12-13 | 国家电网有限公司 | Active amplifier power supply circuit for partial discharge detection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6097973A (en) * | 1997-12-19 | 2000-08-01 | Motorola, Inc. | Electronic circuit for a portable electronic device |
| CN1547372A (en) * | 2003-12-06 | 2004-11-17 | �ż��� | Wireless fixed telephone module and telephone set |
| CN1731689A (en) * | 2004-08-04 | 2006-02-08 | 中兴通讯股份有限公司 | CDMA mobile communication system pilot transmitter |
-
2006
- 2006-03-31 CN CN2006100601530A patent/CN101047334B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6097973A (en) * | 1997-12-19 | 2000-08-01 | Motorola, Inc. | Electronic circuit for a portable electronic device |
| CN1547372A (en) * | 2003-12-06 | 2004-11-17 | �ż��� | Wireless fixed telephone module and telephone set |
| CN1731689A (en) * | 2004-08-04 | 2006-02-08 | 中兴通讯股份有限公司 | CDMA mobile communication system pilot transmitter |
Non-Patent Citations (1)
| Title |
|---|
| JP平8－95654A 1996.04.12 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013104292A1 (en) * | 2012-01-09 | 2013-07-18 | 华为终端有限公司 | Terminal power supply circuit and multi-mode data card |
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| Publication number | Publication date |
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| CN101047334A (en) | 2007-10-03 |
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