Frequency control word linearization for an oscillator
US10840921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2018 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Sep 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L2207/50
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and circuit for linearizing a frequency response of an oscillator controlled by a plurality of capacitor banks are disclosed. In the disclosed method, for each capacitor bank of at least two capacitor banks of the oscillator, a respective sensitivity characteristic of the capacitor bank is determined. Further, a set of reference output frequency control words (FCWs) for an associated set of frequencies of the oscillator are determined. When an input FCW is received and an output FCW is responsively provided based on (i) an interpolation between two reference output FCWs of the set of reference output FCWs and (ii) the respective sensitivity characteristics of the at least two capacitor banks of the oscillator. The output FCW is then applied to the at least two capacitor banks of the oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.