Analog to digital convertor and a method of calibrating same
US9160356B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2014 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Jul 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/452
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analog to digital convertor (ADC) comprises an integrator having an input selectively connected to an intermediate frequency (IF) signal input and an output connected to a summer. The summer has an output connected to an input of a quantizer, the quantizer output being operatively connected to a signal strength indicator. The integrator includes a programmable gain feedback component. The summer has a synthesized calibration signal input, the value of the programmable gain feedback component being configured to vary when a synthesized calibration signal at the intermediate frequency is applied to the summer. The signal strength indicator is configured to detect a value of the programmable gain feedback component when the signal strength is minimized and to calibrate the ADC accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.