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    • 4. 发明申请
    • Apparatus and method for extracting second harmonic signal
    • 二次谐波信号提取装置及方法
    • US20090124203A1
    • 2009-05-14
    • US12292076
    • 2008-11-12
    • Tai-Kyong SongSang-Min KimJae-Hee Song
    • Tai-Kyong SongSang-Min KimJae-Hee Song
    • H04B7/00
    • G01S7/52038G01S15/102G01S15/8963G01S15/8977
    • Disclosed herein is an apparatus and method for extracting a second harmonic signal. The apparatus removes a fundamental frequency signal from a reception signal and then extracting the second harmonic signal. A transmitter generates a transmission signal by modulating a reference signal, and then transmits the transmission signal. A receiver extracts the second harmonic components of the reception signal by demodulating the reception signal received after the transmission signal is reflected by an external media. The transmitter includes a reference signal input unit, a first phase modulation unit, a second phase modulation unit, and a transmission signal output unit. The receiver includes a reception signal input unit, a first output signal generation unit, a second output signal generation unit, and a signal output unit.
    • 本文公开了一种用于提取二次谐波信号的装置和方法。 该装置从接收信号中去除基频信号,然后提取二次谐波信号。 发射机通过调制参考信号产生发送信号,然后发送发送信号。 接收机通过解调在传输信号被外部介质反射之后接收到的接收信号来提取接收信号的二次谐波分量。 发射机包括参考信号输入单元,第一相位调制单元,第二相位调制单元和发送信号输出单元。 接收机包括接收信号输入单元,第一输出信号生成单元,第二输出信号生成单元和信号输出单元。