Radio frequency front end circuit

专利名称：Radio frequency front end circuit发明人：Mao-Chang Chuang,Chi-Hsin Wu申请号：US12949808申请日：20101119公开号：US083110B2公开日：20130129

专利附图：

摘要：A RF front end circuit includes a processor, a main receiving (Rx) path and anadjustment path connected between the processor and an external antenna array inparallel, and a coupling module coupled with the main Rx path. The adjustment pathincludes an adjustment transmitting (Tx) path, an adjustment Rx path, and a DSP. The

adjustment Tx path includes a coupling switch. When the circuit operates in an adjustmentmode, the switch is connected to the coupling module, the adjustment Rx path receivesand demodulates a first analog signal, the DSP converts the first analog signal to a digitalsignal, clipping a peak of the digital signal, and converts the digital signal to a secondanalog signal, the adjustment Tx path modulates and reverses the phase of the secondanalog signal, and the coupling module couples the second analog signal to the main Rxpath to counteract noise received thereby.

申请人：Mao-Chang Chuang,Chi-Hsin Wu

地址：Taipei Hsien TW,Taipei Hsien TW

国籍：TW,TW

代理机构：Altis Law Group, Inc.

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