Varactor folding technique for phase noise reduction in electronic oscillators
US6563392B2 · kind B2 · utility
10Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2000 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Dec 14, 2020 |
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.