Group delay characteristic correcting device and group delay characteristic correcting method
US7916049B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | May 21, 2009 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Jun 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A disclosed group delay characteristic correcting device corrects group delay characteristics of an analog low-pass filter used to remove aliasing of a digital-analog converter or an analog-digital converter. The group delay characteristic correcting device includes a digital signal processing unit configured to have an all-pass phase circuit at a stage previous to the digital-analog converter or at a stage subsequent to the analog-digital converter so as to correct the group delay characteristics of the analog low-pass filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.