Differential offset calibration circuit
US8289064B2 · kind B2 · utility
1Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2010 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Dec 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H21/0001
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential offset circuit adapted for an adaptive filter of a receiver front end is provided. The differential offset circuit includes four controllable current sources which are respectively coupled to two differential output terminals of the adaptive filter. The current magnitudes of the controllable current sources are capable of being adjusted according to design requirements so that the differential offset of the adaptive filter is mitigated to avoid that the adaptive filter outputs a distorted signal to affect the accuracy of signal transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.