Highly stable frequency generator
US5719827A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1995 |
| Grant date | Feb 17, 1998 |
| Priority date | — |
| Expiry date | Oct 18, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L1/026
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A highly stable frequency generator (G) comprises an oscillator (10) for generating a first frequency (F1), and further comprises a time base (BT) providing a time stable frequency signal which is independent of the temperature, and a feedback circuit arranged to provide a first number of pulses (n.sub.T) coming from the oscillator (10) to a comparing circuit (13), a circuit (14) for providing a reference number of pulses (N.sub.T) to said comparing circuit (13), and a circuit (13,15,16) providing a correction signal (Sc) as a function of the difference (.DELTA.) between the first number (n.sub.T) and the reference number (N.sub.T), the generator (G) further comprising a correction circuit (17) of the oscillation frequency (F1) of said first oscillator (10), this correction circuit being controlled by said control signal (Sc).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.