Closed-loop frequency control of an oscillator circuit
US5528199A · kind A · utility
7Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Dec 30, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2201/0266
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The output frequency of a simple low-power-dissipation oscillator circuit designed to drive PPS CMOS circuits is controlled by a closed-loop system. In response to deviations of the output frequency from a prescribed value, the system generates correction signals that are applied to an array of capacitors. In that way, capacitance is electrically added to or subtracted from a series-resonant path of the oscillator circuit, thereby to automatically establish and maintain the output frequency of the circuit at or near its prescribed value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.