Coherent phase detector using a frequency discriminator
US4071829A · kind A · utility
11Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1976 |
| Grant date | Jan 31, 1978 |
| Priority date | — |
| Expiry date | Nov 9, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A coherent phase detector using a frequency discriminator for reducing a frequency encoded signal to baseband, thereby avoiding the necessity of generating a coherent RF phase reference signal. A baseband processor is provided to compensate for error components arising in the frequency discriminator output. The baseband processor includes feedback loops for DC level correction and automatic gain correction. A novel scheme is also described for reducing the influence of interbit crosstalk on the operation of the baseband processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.