A Study on the Drive Circuit Improvement In the Low Impedance Communication

저임피던스 통신 환경에서의 구동회로 개선에 관한 연구

As most of the powerline modems use spread spectrum modulation method which has strong immunity against the narrowband fading, or psk modulation method, the amplitude of the signal contains no useful informations. In this paper, we used class D amplifier to implement the drive circuit of the analog front end, and showed that it has great superiority over other existing drive circuits in rapidly impedance changing power line channel.