System and method for stabilizing high order sigma delta modulators
US7123177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2003 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Nov 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/43
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system and method is provided for stabilizing high order sigma delta modulators. The system includes an integrator having a limiter in the feedback path of the integrator. The integrator combines an input signal with a feedback signal generated by the limiter to produce an integrated output signal. The output signal is output to the next component of the sigma delta modulator. In addition, the output signal is fed back through the limiter. When an output signal received in the feedback path by the limiter exceeds the threshold value of the limiter, the limiter is activated and clamps the output signal to produce a limited signal. The limited signal is combined with the input signal to the integrator to produce the output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.