A LINC amplifier of a radio frequency transmitter provides substantially linear amplification from two nonlinear amplifiers by decomposing the original signal into two constant amplitude envelope, phase varying signals, which, when combined, constructively and destructively interfere to re-form the original...http://www.google.de/patents/US5990734?utm_source=gb-gplus-sharePatent US5990734 - System and methods for stimulating and training a power amplifier during non-transmission events
