DC offset calibration for complex filters
US8385863B2 · kind B2 · utility
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1References
22Claims
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Assignee
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Key dates
| Filing date | Aug 11, 2009 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Aug 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2011/0494
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Exemplary techniques for DC offset calibration for complex filters are disclosed. A complex filter is provided having a first calibration path circuit and a second calibration path circuit, each including a first and a second set of switches, respectively. The first set of switches is enabled during calibration mode and the second set of switches is enabled during normal operation mode such that the network characteristics of each calibration path circuit are substantially the same during both modes of operation. In one embodiment, the complex filter is a low pass filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.