System and method for bandwidth estimation of an integrated filter
US6825713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Mar 17, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06J1/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for estimating the bandwidth of a baseband filter that produces a phase shift on arriving analog signals is disclosed. The system comprises means for generating a digital reference clock signal and means for converting the digital reference clock signal into an analog reference clock signal to be input to the baseband filter. Phase comparison means are coupled to the baseband filter for comparing the digital reference clock signal to the analog reference clock signal phase shifted through the baseband filter. A digital pulsed signal that is representative of the phase shift is generated, and digital circuit means connected to the phase comparison means convert the digital pulsed signal into a digital value, the digital value being proportional to the phase shift of the baseband filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.