Adaptively extending tunable range of frequency in a closed loop
US6885873B2 · kind B2 · utility
7Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2002 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Jan 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/107
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A semiconductor device or a circuit includes a controllable oscillator and circuitry that senses a voltage which may control the controllable oscillator and digitally controls a gain compensation, adaptively compensating for a drop in a gain against overall loop gain within a closed loop. In one embodiment, a single supply source may be used to power the closed loop while a variable gain stage that is digitally controllable may adjust the gain in a feed-forward manner based on the drop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.