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    • 6. 发明申请
    • Frequency modulation-type transmitting apparatus
    • 频率调制型发送装置
    • US20070076815A1
    • 2007-04-05
    • US11528874
    • 2006-09-28
    • Masaki KinoshitaNobuo TakahashiSatoshi Terada
    • Masaki KinoshitaNobuo TakahashiSatoshi Terada
    • H04L25/49
    • H03G3/3036
    • A front-end processing circuit applies predetermined processing to an input signal and outputs a processed signal. A frequency modulation circuit applies frequency modulation to the output signal of the front-end processing circuit and outputs a processed signal. The front-end processing circuit includes a variable amplifier and a level detector. The variable amplifier receives a feedback signal and amplifies a signal by an amplification factor corresponding to the feedback signal. The level detector outputs the feedback signal to the variable amplifier in accordance with a level of a signal obtainable in a circuit succeeding the variable amplifier. The front-end processing circuit maintains the signal supplied to the frequency modulation circuit at a constant level.
    • 前端处理电路对输入信号进行预定处理并输出处理后的信号。 频率调制电路对前端处理电路的输出信号进行频率调制,并输出处理后的信号。 前端处理电路包括可变放大器和电平检测器。 可变放大器接收反馈信号并且通过与反馈信号对应的放大系数来放大信号。 电平检测器根据在可变放大器之后的电路中可获得的信号的电平将反馈信号输出到可变放大器。 前端处理电路将提供给频率调制电路的信号保持在恒定水平。
    • 8. 发明授权
    • Frequency modulation-type transmitting apparatus
    • 频率调制型发送装置
    • US08009835B2
    • 2011-08-30
    • US11528874
    • 2006-09-28
    • Masaki KinoshitaNobuo TakahashiSatoshi Terada
    • Masaki KinoshitaNobuo TakahashiSatoshi Terada
    • H04H20/47H04H20/88H04H40/36H04H20/48H04H40/45H03G3/00
    • H03G3/3036
    • A front-end processing circuit applies predetermined processing to an input signal and outputs a processed signal. A frequency modulation circuit applies frequency modulation to the output signal of the front-end processing circuit and outputs a processed signal. The front-end processing circuit includes a variable amplifier and a level detector. The variable amplifier receives a feedback signal and amplifies a signal by an amplification factor corresponding to the feedback signal. The level detector outputs the feedback signal to the variable amplifier in accordance with a level of a signal obtainable in a circuit succeeding the variable amplifier. The front-end processing circuit maintains the signal supplied to the frequency modulation circuit at a constant level.
    • 前端处理电路对输入信号进行预定处理并输出处理后的信号。 频率调制电路对前端处理电路的输出信号进行频率调制,并输出处理后的信号。 前端处理电路包括可变放大器和电平检测器。 可变放大器接收反馈信号并且通过与反馈信号对应的放大系数来放大信号。 电平检测器根据在可变放大器之后的电路中可获得的信号的电平将反馈信号输出到可变放大器。 前端处理电路将提供给频率调制电路的信号保持在恒定水平。