Multi-level demodulator and VCO circuit
US5666084A · kind A · utility
5Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1995 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Dec 1, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3836
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A multi-level demodulator has a VCO (32) and two reference frequency sources (50, 41). A relatively long time-constant loop (45, 47) has an input coupled to the VCO, an input coupled to one of the reference frequency sources (41) and an output coupled to the VCO. A relatively short time-constant loop (51, 30) has an input coupled to the VCO, an input coupled to the other reference frequency source (50) and an output coupled to the VCO.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.