In the present invention a semiconductor integrated circuit is described to perform signal detection in a data communication system. The circuit is configured such that the capacitors used in high pass filter and a low pass filter are CMOS capacitors. The capacitors are formed from transistors where...http://www.google.de/patents/US6246268?utm_source=gb-gplus-sharePatent US6246268 - CMOS integrated signal detection circuit with high efficiency and performance
