rf Switching apparatus utilizing optical control signals to reduce spurious output
US4570079A · kind A · utility
11Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1983 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Feb 16, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/78
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.