Abstract: Feedback amplifiers having zero or infinite input and output impedances are used as the main amplifier and error amplifier elements of a feed-forward amplifier system. This allows the required impedance matching with simple resistive coupling networks rather than the complicated couplers heretofore required.The use of both series and shunt feedback provides convenient coupling points for the proper phase relationship between combining signals, and the unidirectional conductivity of the amplifier transistors supplies the directionality usually required of the couplers.