DC offset canceller
US9203364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2014 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Dec 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45212
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Two LPFs are disposed on the output side of a differential amplifier to remove an AC component contained in an output signal output from a first output terminal of the differential amplifier and an AC component contained in an output signal output from a second output terminal of the differential amplifier. The lowpass filter voltage of the output signal output from the first output terminal with the AC component removed is input to one of input terminals of one of two comparators, and the lowpass filter voltage of the output signal output from the second output terminal with the AC component removed is input to one of input terminals of the other comparator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.