Cancellation of electrical memory effects in FET power amplifiers

Memory effects are often responsible for degrading the performance of amplifier linearization schemes. This paper presents a circuit which is capable of cancelling electrical memory effects present within amplifiers employing FET devices. Practical results show that the circuit can provide the conditions necessary for suppression of asymmetry and reduction of frequency dependent variation within the intermodulation distortion. Successful operation is possible for signals having bandwidths of up to 30MHz.