Analog-to-digital converter-embedded fixed-phase variable gain amplifier stages for dual monitoring paths
US11552649B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2021 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Dec 3, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/458
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A delta-sigma modulator may include a loop filter, a quantizer, an input gain element having a programmable input gain and coupled between an input of the delta-sigma modulator and an input of the loop filter, a feedforward gain element having a programmable feedforward gain and coupled between the input of the delta-sigma modulator and an output of the loop filter, and a quantizer gain element having a quantizer gain and coupled between the output of the loop filter and an input of the quantizer. The programmable input gain is controlled in order to control a variable gain of the delta-sigma modulator. The programmable feedforward gain is controlled to be equal to the ratio of the programmable input gain and the quantizer gain such that the delta-sigma modulator has a fixed phase response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.