Continuous-time delta-sigma modulators using distributed resonators
US7307564B1 · kind B1 · utility
1Cited by
16References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 25, 2004 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Jan 12, 2025 |
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.