Switched capacitor pilot phase and magnitude detector
US4933974A · kind A · utility
0Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1989 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Aug 14, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1653
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A switched capacitor low pass filter is used to sample an FM stereo composite signal with non-overlapping clock signal to achieve phase or magnitude detection of the 19 kHz pilot without being adversely affected by the presence of information at or about 57 kHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.