Spurious product and local oscillator radiation suppression system for use in superheterodyne radio receivers

摘要

A system for suppressing spurious product signals and radiation resulting from the leakage of local oscillator signal energy in superheterodyne radio receivers. The system includes a 0 DEG signal splitter, a 180 DEG signal splitter, a pair of mixers and a 180 DEG signal combiner. The splitters split the communications input signal and local oscillator signal into signal components which are mixed together in the mixers to form intermediate frequency components which are combined in the combiner.