Varactor folding technique for phase noise reduction in electronic oscillators
US6985044B2 · kind B2 · utility
1Cited by
13References
22Claims
0Family size
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Key dates
| Filing date | Oct 15, 2004 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Oct 15, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/10
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A varactor folding technique reduces noise in controllable electronic oscillators through the use of a series of varactors having relatively small capacitance. A folding circuit provides control signals to the varactors in a sequential manner to provide a relatively smooth change in the total capacitance of the oscillator. Consequently, effective control of the oscillator is achieved with accompanying reductions in oscillator noise such as flicker noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.