High-speed waveform digitizer with a phase correcting means and a method therefor
US6384756B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2000 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Feb 17, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/0836
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digitizer for converting an analog signal output from a semiconductor device to a digital signal, includes: N Analog-to-Digital converters (ADC's) (31, 32), which sequentially convert the analog signal output from the semiconductor device to the digital signal, a phase error term being denoted &tgr;; an N-way time interleaving unit (40) which interleaves the digital signals from said ADC's in sequence and produces data sequence; and a Fourier Transformation (FT) processing unit (50) for performing FT processing on the data sequence output from said N-way time interleaving unit, the FT processing unit including a butterfly operation unit (220) which inserts a phase error correcting factor to a butterfly operation performed by said butterfly operation unit, so as to correct &tgr;.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.