Towards Ultra-Low-Voltage and Ultra-Low-Power Discrete-Time Receivers for Internet-of-Things

Feng Wei Kuo, Sandro Binsfeld Ferreira, Ron Chen, Lan Chou Cho, Chewn-Pu Jou, Mark Chen, Masoud Babaie, Robert Bogdan Staszewski

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

2 Citations (Scopus)

Abstract

In this paper, we investigate an impact of voltage supply scaling on power consumption and performance of a new class of wireless receivers (RX) for Internet-of-Things (IoT) applications: a discrete-time (DT) superheterodyne architecture realized in nanoscale CMOS using inverter-based gm and switched capacitors. The power supply is partitioned into three separate domains: RF, intermediate frequency (IF) processing, and clocking, which allows them to be independently regulated to assess their respective impact. The DT-RX maintains its functionality, albeit with some acceptable loss of performance, when the core supplies are varied by as much as an octave, i.e., from the nominal 1.1 V down to 0.55V. The DT-RX IC is then connected to a switched-capacitor based voltage doubler array on a companion IC die such that the DT-RX can be powered at the octave range of 0.275-0.55 V from an energy harvester. The sensitivity at the doubler's 0.275/0.55 V input is -85/-95 dBm while consuming 1.0/2.4mW. Both ICs are implemented in TSMC 28-nm LP CMOS.

Original languageEnglish
Title of host publication2018 IEEE/MTT-S International Microwave Symposium - IMS
Subtitle of host publicationProceedings
Place of PublicationDanvers
PublisherIEEE
Pages1211-1214
Number of pages4
ISBN (Electronic)978-1-5386-5067-7
ISBN (Print)978-1-5386-5068-4
DOIs
Publication statusPublished - 17 Aug 2018
Event2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 - Philadelphia, United States
Duration: 10 Jun 201815 Jun 2018

Conference

Conference2018 IEEE/MTT-S International Microwave Symposium, IMS 2018
CountryUnited States
CityPhiladelphia
Period10/06/1815/06/18

Keywords

  • Bluetoth LE
  • Discrete-time receiver
  • Internet-of-Things
  • ultra-low voltage
  • ultralow power
  • voltage doubler

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