Wireless communication device

A wireless communication device, radio frequency signal technology, applied in wireless communication, electrical components, transmission systems, etc., can solve the problems of complex circuit structure, unfavorable miniaturization of mobile phones, and increased design costs.

Inactive Publication Date: 2014-11-12
SHENZHEN FUTAIHONG PRECISION IND CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using two power amplifiers is not conducive to the miniaturization of mobile phones,

Method used

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  • Wireless communication device

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Embodiment Construction

[0010] see figure 1 , a preferred embodiment of the present invention provides a wireless communication device 100, which can be a mobile phone, a personal digital assistant (Personal Digital Assistant, PDA) and the like.

[0011] The wireless communication device 100 can work in the first radio frequency mode and the second radio frequency mode, so as to respectively send and receive the first type radio frequency signal and the second type radio frequency signal which have substantially the same frequency. In this embodiment, the first radio frequency mode is a GSM mode, and the first type radio frequency signal is a GSM850 signal. The second radio frequency mode is a WCDMA mode, and the second type radio frequency signal is a WCDMA Band 5 signal. The working frequencies of the GSM850 signal and the WCDMA Band 5 signal are both about 850MHz.

[0012] The wireless communication device 100 includes a controller 10 , a first switch 20 , a power amplifier 30 , a second switch ...

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Abstract

The invention provides a wireless communication device working in a first radio frequency mode and a second radio frequency mode so as to receive and transmit a first-kind radio-frequency signal and a second-kind radio-frequency signal respectively, and the first-kind radio-frequency signal and the second-kind radio-frequency signal are basically the same in frequency. The wireless communication device comprises a controller, a first switch, a power amplifier and a second switch. The controller is used for transmitting a first voltage control signal to the power amplifier in the first radio frequency mode and transmitting a second voltage control signal to the power amplifier in the second radio frequency mode. The first switch is used for transmitting the first-kind radio-frequency signal and the second-kind radio-frequency signal to the power amplifier. The power amplifier is used for amplifying the first-kind radio-frequency signal according to the first voltage control signal and amplifying the second-kind radio-frequency signal according to the second voltage control signal. The power amplifier is further used for transmitting the amplified first-kind radio-frequency signal and the amplified second-kind radio-frequency signal to the second switch. By means of the wireless communication device, the design cost is reduced effectively.

Description

technical field [0001] The invention relates to a wireless communication device, in particular to a wireless communication device for sending and receiving dual-mode radio frequency signals. Background technique [0002] Currently, many mobile phones use both Global System For Mobile (GSM) and Wideband Code Division Multiple Access (WCDMA) communication functions. In this type of mobile phone architecture, the GSM platform uses a polarized power amplifier, while the WCDMA platform uses a linear power amplifier. Therefore, in order to send and receive WCDMA signals and GSM signals, the GSM platform and the WCDMA platform need to configure independent power amplifiers. However, the use of two power amplifiers is not conducive to the miniaturization of the mobile phone, and at the same time makes the circuit structure more complicated and increases the design cost. Contents of the invention [0003] In view of this, it is necessary to provide a wireless communication device...

Claims

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Application Information

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IPC IPC(8): H04W88/02H04B1/40
Inventor 沙坚
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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