Efficient power combining of multiple amplifiers is a key determinate of size, weight, and range in EW and communication systems. However, precise amplitude and phase matching for optimum power combining efficiency is difficult to achieve over broad frequency bandwidths. Also, when a transmitter operates in close proximity to a receiver, a means for isolating the receiver from the high power interference is needed. Adaptive interference cancellation has been used successfully to solve this problem. Presented is an innovative integration of adaptive amplitude and phase control within a power amplifier combiner to achieve both optimum power combining efficiency and cancellation of interference in a nearby receiver. The hardware is small and moderate in cost, and the technology is well suited to upgrade both fixed carrier and frequency hopping communication systems which have interference problems.