Fully Passive RF Wake-Up Receiver Including a Small Loop Antenna with -30.7 dBm Sensitivity at 26 kbps Bitrate

Darshan Shetty, Christoph Steffan, Wolfgang Bösch, Jasmin Grosinger*

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

Abstract

This brief presents a fully passive RF wake-up receiver (WuRX) fabricated in a 130 nm CMOS process with a matched small loop antenna. The WuRX consists of a high-sensitivity RF energy harvester that supplies the circuitry necessary for passive WuRX functionality. The circuit consists of an on-chip voltage reference, current reference, power-on reset, low-dropout regulator, relaxation oscillator, envelope detector, comparator, and a digital processor. The WuRX supports an input bitrate of 26 kbps and has a user-defined 12-bit wake-up pattern. Measurements at 830 MHz reveal a wake-up sensitivity of -30.7 dBm and a 1 V harvested output sensitivity of -31 dBm. The RF-powered fully-passive WuRX paves the way for autonomous batteryless sensor nodes.

Originalspracheenglisch
Aufsatznummer10208141
Seiten (von - bis)21-25
Seitenumfang5
Fachzeitschrift IEEE Transactions on Circuits and Systems, Part II: Express Briefs
Jahrgang71
Ausgabenummer1
Frühes Online-Datum2023
DOIs
PublikationsstatusVeröffentlicht - 1 Jan. 2024

Schlagwörter

  • Sensitivity
  • Radio frequency
  • Threshold voltage
  • Oscillators
  • Transistors
  • Loop antennas
  • Correlators

ASJC Scopus subject areas

  • Elektrotechnik und Elektronik

Fields of Expertise

  • Information, Communication & Computing

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