Varactor voltage controlled oscillator (VCO) providing independent coarse and fine frequency tuning
US8786376B2 · kind B2 · utility
9Cited by
6References
15Claims
0Family size
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Key dates
| Filing date | Dec 13, 2011 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Dec 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2200/0034
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage controlled oscillator, includes a tank circuit including an inductor having a value L, interconnected with first and second variable capacitors, having values CVAR1 and CVAR2, and a fixed capacitor CFIXED, to cause oscillation of the oscillator at a controlled frequencyCVAR1 controls coarse frequency tuning of the oscillator, and CVAR2 may control fine tuning of the oscillator. The variable capacitors may be formed using accumulation-mode MOS varactors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.