Phase adjusted feedforward system utilizing a single amplitude/phase equalizer

摘要

There is disclosed a feedforward system which reduces the phase and amplitude equalizer circuits necessary to provide for circuit operation. The main and error amplifiers of a phase adjusted feedforward system are constructed to have essentially equivalent delay and gain characteristics. The two loops formed by the main and error amplifiers are then phase and amplitude equalized by use of one phase/amplitude equalizer in the small signal loop between the output coupler and the hybrid junction. The circuit may be implemented with less complex structure, thereby resulting in additional circuit simplification and less cost.