Transmitter/receiver

Details Transmitter/receiver Transmitter/receiver

1987-11-19

1988-10-11

Masinick, Michael A.

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

455 80, 455327, 455328, H04B 140

Patent

active

047776544

ABSTRACT:
A combined duplexer/mixer especially for use in an FMCW millimetric radar system has a waveguide section containing a fin line or suspended strip structure for responding to the linearly polarized radar return signal passing through the section in one direction while permitting passage of the orthogonally polarized, outgoing signal passing in the other direction. The fin line is coupled via double balanced mixer diodes to an IF output line to produce an IF signal by mixing the return signal with a portion of the outgoing signal tapped off by a field distorting probe, ridge section or like coupling means.

REFERENCES:
patent: 2839683 (1958-06-01), Cacheris
patent: 3383628 (1968-05-01), Tschannen
patent: 3789406 (1974-01-01), Wernli
patent: 4259741 (1981-03-01), Kaneko et al.
patent: 4480336 (1984-10-01), Wong et al.
patent: 4541120 (1985-09-01), Szabo
patent: 4541124 (1985-09-01), Lacour et al.

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