Multiband voltage controlled oscillator without switched capacitor
US8493155B2 · kind B2 · utility
2Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2011 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Aug 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/1293
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A controlled oscillator includes, connected in parallel, a capacitor configured to be tuneable based upon a first signal, an inductor, and an active impedance. The active impedance is formed by a pair of cross-coupled transistors connected so as to produce a negative resistive component at the terminals of the active impedance. Circuitry produces a degeneracy tuneable by a second signal in the cross-coupled pair, such that the cross-coupled pair produces a capacitive component tuneable based upon the second signal at the terminals of the active impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.