Full bridge integral noise shaping for quantization of pulse width modulation signals
US7142597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2002 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Nov 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/504
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Systems and methods are described for full bridge integral noise shaping for quantization of pulse width modulated signals. A method for full bridge integral noise shaping comprises: receiving a first and a second reference PWM signal; summing the first and second reference PWM signals with a quantization error correction; quantizing the sum into a first and a second output PWM signal; differentially integrating the first and second reference PWM signals and the first and second output PWM signals according to a full bridge integral noise shaping algorithm to obtain the quantization error correction. An apparatus for performing a full bridge integral noise shaping quantization of a pulse modulated signal, includes: a single-ended to differential conversion circuit; and a full bridge INS quantizer circuit, coupled to the single-ended to differential conversion circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.