Tuning voltage range extension circuit and method
US8581667B2 · kind B2 · utility
2Cited by
10References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2011 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Dec 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/0315
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit includes a first path including a first transistor and a first current source. The first transistor is responsive to a tuning voltage. The circuit also includes a tuning voltage range extension circuit responsive to the tuning voltage. The tuning voltage range extension circuit is configured to selectively change current supplied by the first path as the tuning voltage exceeds a capacity threshold of the first transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.