High resolution digital controlled oscillator
US6714084B2 · kind B2 · utility
6Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 9, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | May 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/0322
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention provides a frequency synthesis circuit. The frequency synthesis circuit includes a noise-shaping quantizer and a digitally controlled oscillator. The noise-shaping quantizer responsive to a plurality of input bits for shaping error signals resulting from the quantization conversion such that most of the error occurs at high frequency. The digitally controlled oscillator is connected to the output of the quantizer having an output frequency responsive to the output of the quantizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.