Lossy linearizers for reduction of nonlinear distortion

This article describes a technique for reducing distortion components in no nlinear electronic or electro-optic devices. The linearizer circuits are ca pable of generating both even- or odd-order distortion, or any combination thereof. Both compressive (180 degrees) and expansive (0 degrees) nonlinear ity can be generated, enabling distortion component from the linearizer to be of the opposite phase to the distortion components from the device to be linearized. The linearizer circuits are inherently matched, and can be sel f-compensated for parasitic elements, which makes them capable of large ban dwidths. They do not require the use of delay lines and phase matching tech niques, and are simple to implement. The theoretical background for lossy l inearizers (assuming a weak nonlinearity) is presented. The implementation of such a network in an actual CATV electro-optic transmitter working betwe en 50 and 750 MHz for the transmission of region specific signals (narrow c ast signals) as opposed to broadcast signals, mostly analog video which are distributed to all Subscribers, is outlined and results are given.