ENHANCED EFFICIENCY LDMOS BASED FEED FORWARD AMPLIFIER

摘要

A feedforward amplifier (10) employing high efficiency main amplifier (16) and error amplifier (34) with amplifier devices biased in a lower bias class. Small signal nonlinearities in the gain response of the amplifier devices are compensated by a small signal gain adjustment circuit (22, 24). The resulting gain response is substantially linear over the entire usable range of RF input power (RF IN).