Apparatus and method for the calibration of delta-sigma modulators
US8179294B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Sep 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/408
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The application relates to a calibration apparatus and calibration method for a tuneable resonator of a delta-sigma modulator of the continuous time, band pass type. The calibration apparatus comprises: a resonator driver capable of causing an oscillating behavior in a resonator output signal, a reference signal source that provides a reference signal, a frequency detector that provides a frequency relation signal corresponding to the frequency relation between the resonator output signal and the reference signal, and a controller that controls the tuneable resonator in dependence from the frequency relation signal so as to reduce frequency deviation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.