Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1983-02-16
1986-02-11
Miller, Stanley D.
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
328 2, 328 14, 250551, 307529, H03K 342, G06G 700
Patent
active
045700796
ABSTRACT:
An rf multiplexer includes a plurality of rf switch assemblies for switching a selected rf signal to an output in response to an optical control signal. Each rf switch assembly includes a switch circuit mounted in a conductive enclosure. The optical control signal from a control circuit is coupled by an optical fiber into the enclosure to an optical receiver which energizes a diode rf switch. Spurious conduction of rf signals along switch control lines is thereby eliminated without using filters. The multiplexer is particularly useful in a direct frequency synthesizer requiring high speed switching.
REFERENCES:
patent: 3809908 (1974-05-01), Clanton
patent: 4104533 (1978-08-01), Iverson
patent: 4247790 (1981-01-01), Sahasrabudhe et al.
patent: 4249150 (1981-02-01), Bickley et al.
patent: 4324981 (1982-04-01), Miller
patent: 4368385 (1983-01-01), Kanbe et al.
W. F. Green, "A Practical Fiber Optic Switch," National Electronics Packaging and Production Conference Proceedings, Anaheim, Calif., 1978 pp. 267-274.
Callahan Timothy P.
Cole Stanley Z.
McClellan William R.
Miller Stanley D.
Varian Associates Inc.
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