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    • 9. 发明授权
    • Receiver and receiving method of the receiver
    • 接收机的接收和接收方法
    • US08301208B2
    • 2012-10-30
    • US12472741
    • 2009-05-27
    • Yusaku KatsubeMasaaki YamadaJunichi Takahashi
    • Yusaku KatsubeMasaaki YamadaJunichi Takahashi
    • H04M1/00H04B1/38
    • H04L27/3854H04L7/041H04L27/0014
    • The receiver includes a low noise amplifier, a local signal generator, a first mixer, a second mixer, a first amplifier, a second amplifier, a first A/D converter, a second A/D converter, and a signal level detection unit. A detection signal from at least one terminal of the first A/D converter is supplied to an input terminal of the signal level detection unit, thereby generating a reception start signal from the output terminal. Before an RF reception signal is received, a first signal processing unit containing the first mixer, the first amplifier, and the first A/D converter is controlled to an active state, and a second signal processing unit containing the second mixer, the second amplifier, and the second A/D converter is controlled to a low power consumption state. After the RF reception signal is received, the second signal processing unit is controlled to the active state.
    • 接收机包括低噪声放大器,本地信号发生器,第一混频器,第二混频器,第一放大器,第二放大器,第一A / D转换器,第二A / D转换器和信号电平检测单元。 来自第一A / D转换器的至少一个端子的检测信号被提供给信号电平检测单元的输入端,从而从输出端产生接收开始信号。 在接收到RF接收信号之前,将包含第一混频器,第一放大器和第一A / D转换器的第一信号处理单元控制为有效状态,以及包含第二混频器的第二信号处理单元,第二放大器 并且第二A / D转换器被控制到低功耗状态。 在RF接收信号被接收之后,第二信号处理单元被控制到活动状态。