Load tolerant voltage controlled oscillator (VCO), IC and CMOS IC including the VCO
US8514028B2 · kind B2 · utility
6Cited by
7References
20Claims
0Family size
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Key dates
| Filing date | Aug 17, 2011 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Aug 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0264
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage controlled oscillator (VCO), IC and CMOS IC including the VCO. The VCO includes an LC tank circuit, a pair of cross-coupled devices connected to the tank circuit and driving a pair of buffers. Each of the pair of cross-coupled devices includes a field effect transistor (FET) with an independently controllable body, e.g., the surface layer of a Silicon on Insulator (SOI) chip or the surface well of a multi-well chip. Diodes in the multi-well structure are biased off in each device. The tank circuit is coupled to the buffers solely through the FET drain to body capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.