The linear distortion canceller circuit (104, 104-1) obliterates the linear component of any amplitude and/or group delay distortion in a double-sideband, amplitude modulated carrier signal. Pursuant to the present invention, the carrier signal is split into first and second signals. The first signal...http://www.google.com/patents/US4481645?utm_source=gb-gplus-sharePatent US4481645 - Linear distortion canceller circuit
