Polarity switch for satellite television receiver
US4761827A · kind A · utility
34Cited by
16References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1985 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Jan 28, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/001
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A polarity switch for connection between a dual antenna system and a satellite television receiver to permit multiple receivers to simultaneously receive channels of different polarity includes a pin diode switch and input circuitry to decode the standard receiver signal previously used to rotate the antenna feed of a single feed antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.