Spurious product and local oscillator radiation suppression syst

Details Spurious product and local oscillator radiation suppression syst Spurious product and local oscillator radiation suppression syst

1991-09-30

1993-01-12

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455260, 455314, 455317, H04B 110

Patent

active

051797283

ABSTRACT:
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.degree. signal splitter, a 180.degree. signal splitter, a pair of mixers and a 180.degree. 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.

REFERENCES:
patent: 2993958 (1961-07-01), Barnes
patent: 4893316 (1990-01-01), Janc et al.
patent: 5033110 (1991-07-01), Harman

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