Phase locked loop demodulator with gain control
US7420409B2 · kind B2 · utility
0Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2003 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Mar 27, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D3/244
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to a demodulator to demodulate frequency-modulated signals FM including a phase locked loop PLL including at least a phase detector, a loop filter and a voltage controlled oscillator function VCO′, characterized in that said voltage controlled oscillator function VCO′ has modifiable gain. The invention allows to eliminate drawbacks presented by the conventional use of a complex gain modifiable amplifier at the input of demodulated signal processing means. Application: demodulation of modulated signals: wireless phone, home network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.