公开(公告)号：US5095290A

公开(公告)日：1992-03-10

申请号：US679450

申请日：1991-04-02

申请人： Joannes M. J. Sevenhans ,  Erik M. R. Vanden Abeele

发明人： Joannes M. J. Sevenhans ,  Erik M. R. Vanden Abeele

IPC分类号： H03C1/06 ,  H03C1/54

CPC分类号： H03C1/545 ,  H03C2200/0012 ,  H03C2200/0025 ,  H03C2200/0079

摘要： Modulator circuit (MOD) with a modulator proper and a correction signal generator. The modulator proper comprises the cascade connection of an amplifier (T11, T21, CS11, T12, T22, CS12) and a first switching circuit (R11, T31, T51, R12, T32, T52), while the generator comprises the cascade connection of the same amplifier and a second switching circuit (R21, T61, T42, R22, T62, T41) having a correction output (P11, P12) coupled to a feedback input (P21, P22) of the amplifier via a feedback circuit (T71, R31, CS21, T72, R32, CS22). The amplifier and the switching circuits are controlled by a modulating signal and a carrier signal respectively and the first and second switching circuits provide a modulated output signal and a correction signal substantially equal to the envelope of the modulated output signal and used to decrease the modulator distortion.

摘要翻译： 具有调制器的调制器电路（MOD）和校正信号发生器。 调制器适当包括放大器（T11，T21，CS11，T12，T22，CS12）和第一开关电路（R11，T31，T51，R12，T32，T52）的级联连接，而发电机包括级联 具有通过反馈电路（T71，...）耦合到放大器的反馈输入（P21，P22）的校正输出（P11，P12）的相同放大器和第二开关电路（R21，T61，T42，R22，T62，T41） R31，CS21，T72，R32，CS22）。 放大器和开关电路分别由调制信号和载波信号控制，第一和第二开关电路提供基本上等于调制输出信号的包络的调制输出信号和校正信号，并用于减小调制器失真 。