Device of the phase-locked loop type for demodulating a frequency-modulated signal
US5786726A · kind A · utility
1Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Oct 29, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0019
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Device of the phase-locked loop type for demodulating a frequency-modulated signal. Device for frequency demodulation, using a phase-locked loop. According to the invention, for linearizing the variation of the frequency of a local oscillator (11) as a function of its control signal (Vb), a variable capacitance (Cv) is formed by an electronic module (20) which supplies the equivalent of a capacitance whose variation as a function of the control voltage (Vb) has a linearity deviation which is established for compensating the linearity deviation of the frequency of the oscillator as a function of the value of the capacitance (Cv).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.