Wideband VCO resonant circuit method and apparatus
US6801097B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2002 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Jul 18, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L2207/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A wideband Voltage Controlled Oscillator (VCO) uses a resonant circuit tunable over a wide range of resonant frequencies. The resonant circuit includes voltage variable elements such that the resonant frequency, and thus the frequency of oscillation, may be electronically tuned. The voltage variable elements are arranged such that multiple control voltages determine the resonant frequency. A first control voltage is applied to a first set of tuning elements and operates as a coarse control of the resonant frequency. A second control voltage is applied to a second set of tuning elements and operates as a fine control of the resonant frequency. Using multiple control voltages on multiple elements allows for a wideband VCO while maintaining a low VCO gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.