Delta modulator with variable feedback gain, analog-to-digital converter including the delta modulator, and communication device including the delta modulator
US10439636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2018 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Aug 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/498
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A variable feedback gain delta modulator includes group of capacitors commonly connected to a first terminal and are respectively classified into a first capacitor group and a second capacitor group; a comparator for sequentially generating n-bit digital output signals based on a voltage of the first terminal; and a switch group including switches respectively connected to the capacitors, wherein the switches are respectively classified into a first switch group and a second switch group respectively connected to the first capacitor group and the second capacitor group, and the first switch group and the second switch group respectively operate according to a first control signal and a second control signal that are determined based on the n-bit digital output signals and the variable feedback gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.