Desensitized filters with droop correction
US8645443B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2010 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Jul 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2218/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and system for the design and implementation of desensitized digital filters with droop correction. The desensitized digital filter includes a first filter configured to receive an input signal, a decimator or upsampler, and a modified desensitized half-band filter. The first filter introduces droop into the passband of the desensitized digital filter. The desensitized half-band filter has a transfer function F(z)=K(1+z−1)G(z) wherein K≠0 is a scale factor, that is modified to omit a (1+z−1) factor block. The modified desensitized half-band filter compensates for the passband droop introduced by the first filter. The first filter may be a sinc filter, CIC filter, or filter having similar properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.