Voltage-controlled oscillator
US9490745B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2015 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Jan 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2200/0054
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage-controlled oscillator comprises a tank circuit and first and second pairs of transistors. Each transistor comprises a gate, a drain, and a source. The drains of the first pair are coupled to the tank circuit and the gates of the first pair are cross-coupled with the drains of the first pair. The drains of the second pair are coupled to the tank circuit and the gates of the second pair are cross-coupled with the drains of the second pair. The oscillator includes a first resonant filter comprising a first terminal coupled to the sources of the first pair and a second resonant filter comprising a first terminal coupled to the sources of the second pair. A method includes adjusting capacitance in a resonant filter to cause the resonant filter to resonate based on a selected frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.