INTERMODULATION DISTORTION GENERATING CIRCUIT AND INTERMODULATION DISTORTION COMPENSATION CIRCUIT

摘要

PROBLEM TO BE SOLVED: To generate intermodulation distortion required for the intermodulation distortion compensation circuit with a superior characteristic through the configuration of easy adjustment. ;SOLUTION: An input frequency multiplex signal is distributed into two at a distributer 3a, so as to be opposite in phase to each other, each distribution signal is led out via composite diodes 4a whose characteristics are the same, and the distribution signals are synthesized by a synthesizer 3b using a balun transformer to produce odd number degree intermodulation distortion component in the synthesis output. Otherwise, the frequency multiplex signal is distributed into two, so as to be opposite in phase to each other. Each distribution signal is led out via composite diodes 4a whose characteristic are the same, and the distribution signals are synthesized by a resistance synthesizer 7a, so as to produce even number degree intermodulation distortion component in the synthesis output. Since odd number and even number degree produce odd number degree intermodulation distortion components are obtained with high accuracy, the distortion components are mixed in an input frequency multiplex signal to eliminate the distortion components included in the input signal.;COPYRIGHT: (C)1998,JPO