FEEDFORWARD AMPLIFIER

摘要

A feedforward amplifier 150 according to the present invention uses a direct coupling of an amplifier stage 158 with the amplifier's load RL. The main amplifier 202 is coupled through a transmission line 210 to the load. This direct coupled amplifier stage 158 is driven by a signal that induces a very low impedance in parallel with the load to the error signal, but appears as an open circuit to the desired signal so that the desired signal from the main amplifier is substantially unaffected.