Continuous-time delta-sigma modulators using distributed resonators
US7253759B1 · kind B1 · utility
2Cited by
16References
2Claims
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Inventor
Key dates
| Filing date | Jun 7, 2006 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Jun 7, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/456
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A distributed resonator or filter in a continuous-time delta-sigma modulator is disclosed, where the transfer function of the resonator or filter repeats every Fs, where Fs is the sampling frequency of the modulator. On one side, like continuous-time delta-sigma modulators, the disclosed modulator does not require a high-precision track-and-hold, and additionally can take advantage of the high Q of distributed resonators. On the other side, like discrete-time delta-sigma modulators, the disclosed modulator is insensitive to feedback loop delays and can subsample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.