An RF-Energy Harvester and IR-UWB Transmitter for Ultra-Low-Power Battery-Less Biosensors

Stefan Schmickl; Thomas Faseth; Harald Pretl

doi:10.1109/TCSI.2020.2970765

An RF-Energy Harvester and IR-UWB Transmitter for Ultra-Low-Power Battery-Less Biosensors

Stefan Schmickl, Thomas Faseth, Harald Pretl

Department of Integrated Circuits

Research output: Contribution to journal › Article

Abstract

A fully integrated 802.15.4a-LRP-UWB-PHY- and ETSI-compliant impulse-radio ultra-wide-band (IR-UWB) transmitter (TX) front-end, powered by an RF-energy-harvester in 180 nm CMOS technology, is presented. The TX is working in the 7 GHz band transmitting with -42 dBm at 5.12 kbps data rate, consuming 1.89 μW. Two circuit implementations of RF-energy-harvesters are presented and, based on measurements, a combined and optimized structure is proposed which is capable of generating 5 μW dc-power at -13.3 dBm RF input power at a frequency of 868 MHz. According to the overall SoC power budget, this amount of harvested energy is sufficient to power the IR-UWB-TX front-end, an ADC with pre-amplifier and the digital core logic for a wireless bio-sensing chip. Furthermore, improvements of the presented IR-UWB TX circuitry are discussed.

Original language	English
Article number	8986623
Pages (from-to)	1-10
Number of pages	10
Journal	IEEE Transactions on Circuits and Systems I: Regular papers
DOIs	https://doi.org/10.1109/TCSI.2020.2970765
Publication status	Published - Feb 2020

Fields of science

102005 Computer aided design (CAD)
202 Electrical Engineering, Electronics, Information Engineering
202006 Computer hardware
202018 Semiconductor electronics
202023 Integrated circuits
202027 Mechatronics
202028 Microelectronics
202037 Signal processing

JKU Focus areas

Digital Transformation

Access to Document

10.1109/TCSI.2020.2970765

Cite this

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title = "An RF-Energy Harvester and IR-UWB Transmitter for Ultra-Low-Power Battery-Less Biosensors",

abstract = "A fully integrated 802.15.4a-LRP-UWB-PHY- and ETSI-compliant impulse-radio ultra-wide-band (IR-UWB) transmitter (TX) front-end, powered by an RF-energy-harvester in 180 nm CMOS technology, is presented. The TX is working in the 7 GHz band transmitting with -42 dBm at 5.12 kbps data rate, consuming 1.89 μW. Two circuit implementations of RF-energy-harvesters are presented and, based on measurements, a combined and optimized structure is proposed which is capable of generating 5 μW dc-power at -13.3 dBm RF input power at a frequency of 868 MHz. According to the overall SoC power budget, this amount of harvested energy is sufficient to power the IR-UWB-TX front-end, an ADC with pre-amplifier and the digital core logic for a wireless bio-sensing chip. Furthermore, improvements of the presented IR-UWB TX circuitry are discussed.",

author = "Stefan Schmickl and Thomas Faseth and Harald Pretl",

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doi = "10.1109/TCSI.2020.2970765",

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AU - Schmickl, Stefan

AU - Faseth, Thomas

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