Cited 5 time in webofscience Cited 7 time in scopus

An Energy Autonomous 400 MHz Active Wireless SAW Temperature Sensor Powered by Vibration Energy Harvesting

Title
An Energy Autonomous 400 MHz Active Wireless SAW Temperature Sensor Powered by Vibration Energy Harvesting
Authors
Zhu, Y[Zhu, Yao]Zheng, YJ[Zheng, Yuanjin]Gao, Y[Gao, Yuan]Made, DI[Made, Darmayuda I.]Sun, CL[Sun, Chengliang]Je, MY[Je, Minkyu]Gu, AY[Gu, Alex Yuandong]
DGIST Authors
Je, MY[Je, Minkyu]
Issue Date
2015-04
Citation
IEEE Transactions on Circuits and Systems I: Regular Papers, 62(4), 976-985
Type
Article
Article Type
Article
Keywords
Acoustic Surface Wave DevicesAcoustic WavesAcousticsCmos Integrated CircuitsDC-DC ConvertersEnergy-AutonomousEnergy-Autonomous SystemsEnergy HarvestingIntegrated Circuit ManufactureLow PowerOscillators (Electronic)Phase NoisePiezoelectric Energy HarvestersPower ManagementRadioResonatorsSAWSaw OscillatorSaw OscillatorsSaw Temperature SensorsSawingTemperature SensorTemperature SensorsVibration Energy HarvestVibration Energy HarvestingVibration Energy HarvestsWireless
ISSN
1549-8328
Abstract
An energy autonomous active wireless surface acoustic wave (SAW) temperature sensor system is presented in this paper. The proposed system adopts direct temperature to frequency conversion using a lithium niobate SAW resonator for both temperature sensing and high-Q resonator core in a cross-coupled RF oscillator. This arrangement simplifies the temperature sensor readout circuit design and reduces the overall system power consumption. A power conditioning circuit based on buck-boost converter is utilized to provide high efficiency power extraction from piezoelectric energy harvester (PEH) and dynamic system power control. The SAW resonator is fabricated in-house using a two-step lithography procedure while the RF oscillator as well as the PEH power conditioning circuit are implemented in standard 65-nm and 0.18-μm CMOS processes respectively. The measured RF transmitter output power is -15 dBm with a phase noise of -99.4 dBc/Hz at 1 kHz offset, achieving a figure of merit (FOM) of -217.6 dB. The measured temperature sensing accuracy is ±0.6°C in -40°C to 120°C range. Fully powered by a vibration PEH, the proposed energy autonomous system has a self-startup voltage of 0.7 V and consumes an average power of 61.5 μW. © 2004-2012 IEEE.
URI
http://hdl.handle.net/20.500.11750/2601
DOI
10.1109/TCSI.2015.2402937
Publisher
Institute of Electrical and Electronics Engineers Inc.
Files:
There are no files associated with this item.
Collection:
Information and Communication EngineeringETC1. Journal Articles


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