Method of calculating weighting coefficients for an analytical digitizer for signal processing, and analytical digitizer
US5530720A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Jul 1, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analytical digitizer for signal processing includes a sampler and an analog/digital converter. A first calculating device supplies a first component of the signal made up of a sequence of digital values. Each value is calculated by adding 2h+2 value supplied by the converter weighted with respective non-null integer coefficients a.sub.0, . . . , a.sub.h, a.sub.h, . . . , a.sub.0. A second calculating device supplies a second component of the signal, in phase quadrature to the first, and made up of a sequence of digital values y(t). Each of these values is calculated by adding 2h+2 values supplied by the converter weighted with respective non-null integer coefficients b.sub.0, . . . , b.sub.h-1, -b.sub.h-1, . . . , -b.sub.0. The number and the value of the coefficients are determined by a rigorous method according to the center frequency and the bandwidth of the spectrum of the signal to be processed and according to a fixed limit value for the signal/noise ratio. The device finds an application in radio surveillance receivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.