CN201479381U - Transmitting power coupling circuit of mobile communication terminal with multiple frequency bands - Google Patents
Transmitting power coupling circuit of mobile communication terminal with multiple frequency bands Download PDFInfo
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- CN201479381U CN201479381U CN 200920133747 CN200920133747U CN201479381U CN 201479381 U CN201479381 U CN 201479381U CN 200920133747 CN200920133747 CN 200920133747 CN 200920133747 U CN200920133747 U CN 200920133747U CN 201479381 U CN201479381 U CN 201479381U
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- coupling circuit
- circuit
- mobile communication
- coupling
- transmitting power
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Abstract
The utility model relates to a transmitting power coupling circuit of a mobile communication terminal with multiple frequency bands in a mobile communication system. The mobile terminal with the multiple frequency bands in the mobile communication system transmits signals at different wave bands, and the coupling circuit couples partial power to a power detecting circuit so as to realize the function of power detecting. With the characteristics of simple structure, convenient debugging, low cost and the like, the transmitting power coupling circuit provides important guarantee for the normal working of the mobile terminal.
Description
Technical field
The utility model relates to the transmitting power coupling circuit of the multi-frequency band mobile communication terminal in the novel mobile communication system.
Background technology
In the mobile communication terminal in the wireless communication system of CDMA, 3G etc., in order to protect emission power amplifier not damaged and to keep transmitting power stable owing to transmitting power is excessive, need to terminal transmitting power detect control.
And the power coupling circuit is a kind of mode that realizes detection, and the power coupling circuit is that the transmitting power fraction is coupled out by a certain percentage, sends into power-sensing circuit, thereby terminal transmit power is detected.Shown in Figure 1, for the multiband terminal, the product common practice is that each transmitting branch is coupled respectively now, and there is the circuit complexity in the ingoing power testing circuit then, the cost height, and problems such as debug difficulties, its existing defective is:
1, each transmitting branch needs a power coupling circuit, and cost is higher.
2, each wave band coupler joins end to end, and the radio frequency wiring is complicated, and design difficulty is big.
3, cause board area to increase, unfavorable to the miniaturization Design of portable terminal.
The utility model content
At existing design circuit complexity, the cost height, problems such as debug difficulties, the technical problems to be solved in the utility model are to choose the power Coupling point cleverly, thereby have reduced the coupling circuit usage quantity greatly, and simplified design is saved cost.
Main thought of the present utility model be with the coupling of the transmitting power of present multiband terminal the multiple spot coupled modes are revised as the single-point coupled modes, by the realization of choosing to transmitting power coupling circuit position in the multiband portable terminal product circuit.
At above-mentioned problem to be solved, the technical scheme that the utility model adopted is:
A kind of transmitting power coupling circuit of multi-frequency band mobile communication terminal, it is characterized in that the circuit part access power coupling circuit that each band transmit signal all will pass through, be coupled out part power to power-sensing circuit, the coupling position of coupling circuit is at the equal circuit part of process of each band emission signal.
The transmitting power coupling circuit of described multi-frequency band mobile communication terminal, its each band transmit signal is parallel to multiplexer or variable connector, is input to coupling circuit again.Multichannel like this signal only need can be realized power detection by a coupling circuit.
Described coupling circuit, it is a coupler, specifically qualitative coupler.
Described coupling circuit can be any one of resistance coupling, capacitive coupling, inductance coupling high.
The beneficial effects of the utility model are, mobile terminal power coupling circuit in the wireless systems such as CDMA, 3G to be simplified the saving cost by the utility model scheme.Has simplicity of design, characteristics such as reliability height, debugging convenience.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is existing power coupled circuit configuration figure;
Fig. 2 is the theory diagram that adopts the utility model circuit;
One of typical coupling circuit figure that Fig. 3 realizes for the utility model;
Two of the typical coupling circuit figure that Fig. 4 realizes for the utility model.
Embodiment
Be the theory diagram that adopts the transmitting power coupling circuit of the multi-frequency band mobile communication terminal in the mobile communication system as shown in Figure 2.Saved the power coupling circuit in each branch road in Fig. 1 circuit, at all band emission signals of Fig. 1 circuit access power coupling circuit in oversampling circuit.
Fig. 3 is one of physical circuit figure of the utility model realization, adopts the coupler coupling to realize coupling.Electric capacity is every straight effect among the figure.
Fig. 4 is two of the physical circuit figure that realizes of the utility model, adopts resistance to realize coupling, and electric capacity is every straight effect among the figure.
The coupler that is used for this coupling circuit also can be capacitive couplings, inductance coupling high method or broadband coupling network except being qualitative coupler, the simple resistance coupling.
Claims (4)
1. the transmitting power coupling circuit of a multi-frequency band mobile communication terminal, it is characterized in that the circuit part access power coupling circuit that each band transmit signal all will pass through, be coupled out part power to power-sensing circuit, the coupling position of coupling circuit is at the equal circuit part of process of each band emission signal.
2. the transmitting power coupling circuit of multi-frequency band mobile communication terminal according to claim 1 is characterized in that, described each band transmit signal is parallel to multiplexer or variable connector, is input to coupling circuit again.
3. the transmitting power coupling circuit of multi-frequency band mobile communication terminal according to claim 1 is characterized in that, described coupling circuit is qualitative coupler.
4. the transmitting power coupling circuit of multi-frequency band mobile communication terminal according to claim 1 is characterized in that, described coupling circuit is any one of resistance coupling, capacitive coupling, inductance coupling high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920133747 CN201479381U (en) | 2009-07-07 | 2009-07-07 | Transmitting power coupling circuit of mobile communication terminal with multiple frequency bands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920133747 CN201479381U (en) | 2009-07-07 | 2009-07-07 | Transmitting power coupling circuit of mobile communication terminal with multiple frequency bands |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201479381U true CN201479381U (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920133747 Expired - Fee Related CN201479381U (en) | 2009-07-07 | 2009-07-07 | Transmitting power coupling circuit of mobile communication terminal with multiple frequency bands |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201479381U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158295A (en) * | 2011-04-02 | 2011-08-17 | 京信通信技术(广州)有限公司 | Signal power detection device for multi-band signal transmitting device and method thereof |
| CN104683184A (en) * | 2015-02-26 | 2015-06-03 | 摩比天线技术（深圳）有限公司 | Coupler directivity debugging system |
| WO2015085564A1 (en) * | 2013-12-13 | 2015-06-18 | 华为技术有限公司 | Multi-frequency transceiver and base station |
| CN105304999A (en) * | 2015-10-26 | 2016-02-03 | 联想(北京)有限公司 | Coupling device, antenna device, electronic device and control method |
| CN108828538A (en) * | 2018-04-26 | 2018-11-16 | 中国科学院地质与地球物理研究所 | Radar transmission power monitoring device |
-
2009
- 2009-07-07 CN CN 200920133747 patent/CN201479381U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158295A (en) * | 2011-04-02 | 2011-08-17 | 京信通信技术(广州)有限公司 | Signal power detection device for multi-band signal transmitting device and method thereof |
| CN102158295B (en) * | 2011-04-02 | 2014-03-26 | 京信通信技术(广州)有限公司 | Signal power detection device for multi-band signal transmitting device and method thereof |
| WO2015085564A1 (en) * | 2013-12-13 | 2015-06-18 | 华为技术有限公司 | Multi-frequency transceiver and base station |
| US10454505B2 (en) | 2013-12-13 | 2019-10-22 | Huawei Technologies Co., Ltd. | Multi-frequency transceiver and base station |
| US11038541B2 (en) | 2013-12-13 | 2021-06-15 | Huawei Technologies Co., Ltd. | Multi-frequency transceiver and base station |
| CN104683184A (en) * | 2015-02-26 | 2015-06-03 | 摩比天线技术（深圳）有限公司 | Coupler directivity debugging system |
| CN105304999A (en) * | 2015-10-26 | 2016-02-03 | 联想(北京)有限公司 | Coupling device, antenna device, electronic device and control method |
| CN105304999B (en) * | 2015-10-26 | 2019-02-05 | 联想(北京)有限公司 | Coupling device, antenna assembly, electronic equipment and control method |
| CN108828538A (en) * | 2018-04-26 | 2018-11-16 | 中国科学院地质与地球物理研究所 | Radar transmission power monitoring device |
| CN108828538B (en) * | 2018-04-26 | 2021-02-09 | 中国科学院地质与地球物理研究所 | Radar transmitting power monitoring device |
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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: 20100519 Termination date: 20160707 |