Digital inphase/quadrature product detector
US4779054A · kind A · utility
12Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1987 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Aug 17, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D1/2245
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The detector is responsive to a modulated intermediate frequency (IF) or radio frequency (RF) signal for producing four sample signals spaced at 90.degree. one-quarter IF (or RF) cycle apart, the first and third sample signals corresponding to the amplitude of the IF signal and its negative value, respectively, the stream of such sample signals corresponding to the inphase component of the IF signal; the fourth and second sample signals corresponding to the amplitude of the IF signal and its negative value, respectively, the stream of such sample signals corresponding to the quadrature component of the IF signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.