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

doi:10.1109/TCSII.2023.3301892

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^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	10208141
Pages (from-to)	21-25
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems, Part II: Express Briefs
Volume	71
Issue number	1
Early online date	2023
DOIs	https://doi.org/10.1109/TCSII.2023.3301892
Publication status	Published - 1 Jan 2024

ASJC Scopus subject areas

Electrical and Electronic Engineering

Fields of Expertise

Information, Communication & Computing

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/TCSII.2023.3301892Licence: CC BY 4.0

Fully_Passive_RF_Wake-Up_Receiver_Including_a_Small_Loop_Antenna_With_30.7-dBm_Sensitivity_at_26-kbps_BitrateFinal published version, 2.63 MBLicence: CC BY 4.0

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10208141

Cite this

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

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.",

keywords = "Sensitivity, Radio frequency, Threshold voltage, Oscillators, Transistors, Loop antennas, Correlators",

author = "Darshan Shetty and Christoph Steffan and Wolfgang B{\"o}sch and Jasmin Grosinger",

note = "Publisher Copyright: Author",

year = "2024",

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doi = "10.1109/TCSII.2023.3301892",

language = "English",

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AU - Shetty, Darshan

AU - Steffan, Christoph

AU - Bösch, Wolfgang

AU - Grosinger, Jasmin

N1 - Publisher Copyright: Author

PY - 2024/1/1

Y1 - 2024/1/1

N2 - 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.

AB - 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.

KW - Sensitivity

KW - Radio frequency

KW - Threshold voltage

KW - Oscillators

KW - Transistors

KW - Loop antennas

KW - Correlators

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SN - 1549-7747

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JO - IEEE Transactions on Circuits and Systems, Part II: Express Briefs

JF - IEEE Transactions on Circuits and Systems, Part II: Express Briefs

IS - 1

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ER -

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

Abstract

ASJC Scopus subject areas

Fields of Expertise

UN SDGs

Access to Document

Other files and links

Fingerprint

Radio Frequency Identification (RFID) Technologies

Wireless Power Transmission for Sustainable Electronics (WIPE)

Next-Generation IoT Devices: Sustainable Eco-Friendly Manufacturing, Energy Harvesting, and Wireless Connectivity

Ultra-Low-Power Sub-1 V 29 ppm/°C Voltage Reference and Shared-Resistive Current Reference

Sub-GHz RF Energy Harvester including a Small Loop Antenna

Cite this

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

Abstract

ASJC Scopus subject areas

Fields of Expertise

UN SDGs

Access to Document

Other files and links

Fingerprint

Projects

Radio Frequency Identification (RFID) Technologies

Wireless Power Transmission for Sustainable Electronics (WIPE)

Research output

Next-Generation IoT Devices: Sustainable Eco-Friendly Manufacturing, Energy Harvesting, and Wireless Connectivity

Ultra-Low-Power Sub-1 V 29 ppm/°C Voltage Reference and Shared-Resistive Current Reference

Sub-GHz RF Energy Harvester including a Small Loop Antenna

Cite this