Method and circuitry for implementing a differentially tuned varactor-inductor oscillator
US6566971B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Feb 24, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/1256
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention generally relates to voltage-controlled oscillators. More specifically, the present invention relates to method and circuitry for implementing a differentially tuned varactor-inductor oscillator. In one exemplary embodiment, the present invention includes an LC tank circuit having a couple of terminals, a first and second capacitors, and a first and second varactors. The first and second varactors are connected in series forming a first and a second node. The first capacitor connects the first node and one terminal of the LC tank circuit. The second capacitor connects the second node and the other terminal of the LC tank circuit. A pair of differential input control signals is applied across the first and the second varactors, respectively, to tune the LC tank circuit thereby generating an oscillator output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.