Delta-sigma modulator, delta-sigma digital-analog converter, and method for operating a delta-sigma modulator and a delta-sigma digital-analog converter
US11799494B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Jan 21, 2022 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Apr 30, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/32
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A delta-sigma modulator which receives an input signal. The input signal is combined with a feedback signal and the combined signal is filtered by the delta-sigma modulator. The filtered signal is quantized, wherein the feedback signal is generated on the basis of the quantized signal. The quantized signal is output as an output signal. The input signal and/or the filtered signal and/or the feedback signal are filtered in such a way that at least one frequency in an out-of-band frequency range of the input signal is amplified in order to suppress out-of-band quantization noise at the at least one frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.