Method and circuit for increasing the resolution of a digitally controlled oscillator
US8604890B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Nov 16, 2011 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Feb 2, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K4/501
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and a circuit for increasing a resolution of a digitally controlled oscillator include controlling the oscillator so that an output signal of the oscillator varies between semi-periods having a first frequency and semi-periods having a second frequency. The method and circuit further include applying the output signal of the oscillator as an input to a divider to obtain a divided signal. A frequency of at least one semi-period of the divided signal is a function of both an oscillator semi-period having the first frequency and an oscillator semi-period having the second frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.