High speed analog-to-digital converter and digital-to-analog converter
US6476749B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1999 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Dec 20, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/121
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high speed analog-to-digital converter, for converting an analog input signal (u(t)) with a maximum frequency (Fmax) to a digital output signal (x(n)) with an output sampling rate (Fs) at least double the maximum frequency (Fmax), comprises a plurality of analog narrowband filters (F0-FM−1) for filtering the analog input signal (u(t)) to produce a corresponding plurality of narrowband signals (X0-XM−1), which is supplied to a corresponding plurality of analog-to-digital converter units (AD0-ADM−1). The converter also comprises sampling and summing circuitry for sampling the outputs of the analog-to-digital converter units sequentially at the predetermined sampling rate (Fs) and summing the resulting sampled signals to produce the digital output signal (x(n)).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.