R.F. Diplexing and multiplexing means

Details R.F. Diplexing and multiplexing means R.F. Diplexing and multiplexing means

1983-10-26

1985-11-26

Gensler, Paul

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

333103, 333132, 333 25, 455180, H04B 126, H03H 742, H03H 746

Patent

active

045558094

ABSTRACT:
Selection elements such as diodes or filters are provided for selectively grounding either one of the two unbalanced terminals of a balun. This allows either a signal, such as the R.F. signals from a VHF or a UHF antenna, applied to the other unbalanced terminal of the balun to be selectively coupled to the balanced terminals of the balun in a diplexer arrangement. In a tuner, the balun may be used as part of a doubly balanced mixer. In another embodiment, the balanced terminals are used as inputs and the unbalanced terminals are used as outputs with the selection elements coupled to the outputs to form an R.F. multiplexer.

REFERENCES:
patent: 2214830 (1940-09-01), Carlson et al.
patent: 2454784 (1948-11-01), Engel
patent: 3428919 (1969-02-01), Webb
patent: 3818385 (1974-06-01), Mouw
patent: 3938046 (1976-02-01), Valdettaro
patent: 4173742 (1979-11-01), Lehmann
patent: 4408348 (1983-10-01), Theriault
patent: 4462010 (1984-07-01), Strammello
patent: 4480338 (1984-10-01), Dobrovolny
patent: 4499602 (1985-02-01), Hermeling, Jr. et al.

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