Title: Radio-frequency receiver and receiving method
Application Number: 200510082580 Application Date: 2005.07.11
Publication Number: 1897468 Publication Date: 2007.01.17
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04B1/16;H03D7/00
Applicant(s) Name: Luoda Science and Technology Co., Ltd. Address:
Inventor(s) Name: Wang Zhongzheng;Yang Zhansheng
Attorney & Agent: bo maiwen huang xiaolin
Abstract:
    The invention comprises: an antenna for receiving RF signals; a low noise amplifier coupled to the antenna and used to amplify the received RF signals; a direct conversion unit coupled to the low nose amplifier and used to make frequency reduction for the RF signals and to generate an in-phase fundamental frequency signal BI and a orthogonal fundamental frequency signal BQ; a first A/D converter coupled to the direct conversion unit for digitalizing the fundamental frequency signal BI in order to get a in-phase digital signal DI; a second A/C converter coupled to the direct conversion unit for digitalizing the orthogonal fundamental frequency signal BQ in order to get a digital orthogonal fundamental frequency signal DQ; a digital frequency boosting unit coupled to the first A/D converter and the second A/D converter for making frequency up-conversion for the DI and DQ in order to generate a IF signal.
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