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    Transmitter and a modulator therefor
    3.
    发明授权
    Transmitter and a modulator therefor 失效
    发射机及其调制器

    公开(公告)号：US07107030B1

    公开(公告)日：2006-09-12

    申请号：US09599948

    申请日：2000-06-23

    申请人： Simon Furmidge

    发明人： Simon Furmidge

    IPC分类号： H04B1/06

    CPC分类号： H03C1/36 ,  H03G1/0023

    摘要： A transmitter for a portable radio communication apparatus comprising a modulator having first port for inputting a baseband signal and a second port for inputting a local oscillator signal, and including means for rectifying the input local oscillator signal to provide a conductance waveform at a multiple of the local oscillator signal, and means for mixing the baseband signal with the conductance waveform at said multiple of the local oscillator signal frequency for up-converting the baseband signal to a radio frequency modulated carrier, the transmitter including means for controlling the gain of the modulator thereby to control the output level of the modulator.

    摘要翻译： 一种用于便携式无线电通信装置的发射机，包括具有用于输入基带信号的第一端口和用于输入本地振荡器信号的第二端口的调制器，并且包括用于整流输入本地振荡器信号以提供电导波形的装置， 本地振荡器信号，以及用于将基带信号与在所述多个本地振荡器信号频率处的电导波形混合以将基带信号上变频到无线电频率调制载波的装置，所述发射机包括用于控制调制器的增益的装置 以控制调制器的输出电平。