Voltage controlled oscillator with a multiple gate transistor and method therefor
US7279997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2005 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Nov 19, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D30/62
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage controlled oscillator (VCO) has a plurality of series-connected inverters. Within each inverter a first transistor has a first current electrode coupled to a first power supply voltage terminal, a second current electrode, a first control electrode coupled to an output terminal of another inverter of the plurality of series-connected inverters, and a second control electrode for receiving a first bias signal. A second transistor has a first current electrode coupled to the second current electrode of the first transistor, a second current electrode coupled to a second power supply voltage terminal, and a first control electrode coupled to the first control electrode of the first transistor. The second control electrode of the first transistor of each inverter receives a same or separate analog control signal to adjust the threshold voltage of the first transistors thereof to affect frequency and phase of the VCO's signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.