Energy harvesting via analog-to-digital conversion

Neha Jain, Nir Shlezinger, Yonina C. Eldar, Anubha Gupta, Vivek Ashok Bohara

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Analog-to-digital converters (ADCs) allow physical signals to be processed using digital hardware. A common ADC architecture is based on sample-and-hold (S/H) circuits, where the acquired signal is observed in repeated intervals of fixed duration, referred to as the sampling time, and is not utilized for the entire duration. In this paper, we extend the structure of S/H ADCs, allowing them to harvest energy from the observed signal by modifying the circuitry during hold time of the sampling process of an ADC. This harvested energy can be used to supplement the ADC itself, paving the way to the possibility of zero power and power saving ADCs. We analyze the tradeoff between the ability to accurately recover the sampled signal and the energy harvesting which arises from the proposed ADC architecture, and provide guidelines to setting the sampling rate in light of accuracy and energy constraints. Our numerical evaluations indicate that energy harvesting ADCs operating with up to 16 bits per sample can acquire analog signals such that they can be recovered with minimal errors without requiring power from the external source.

Original languageEnglish
Title of host publication28th European Signal Processing Conference, EUSIPCO 2020 - Proceedings
PublisherEuropean Signal Processing Conference, EUSIPCO
Pages2299-2303
Number of pages5
ISBN (Electronic)9789082797053
DOIs
StatePublished - 24 Jan 2021
Externally publishedYes
Event28th European Signal Processing Conference, EUSIPCO 2020 - Amsterdam, Netherlands
Duration: 24 Aug 202028 Aug 2020

Publication series

NameEuropean Signal Processing Conference
Volume2021-January
ISSN (Print)2219-5491

Conference

Conference28th European Signal Processing Conference, EUSIPCO 2020
Country/TerritoryNetherlands
CityAmsterdam
Period24/08/2028/08/20

Keywords

  • Analog-to-digital conversion
  • Energy harvesting

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