Title
Remotely-powered front-end at 2.45 GHz for real-time continuous temperature sensing
Abstract
Remote powering and power management of a passive sensor system employing antenna-rectifier co-design is presented. The operating frequency of the system is chosen at 2.45 GHz in order to reduce the antenna size. A co-design approach enables the coupling of the antenna and the rectifier for maximum power efficiency. The presented tag consists of an antenna, RF rectifier, power management circuit and a ring oscillator. Temperature sensing with the passive sensor system is demonstrated by the on-chip ring oscillator. The RF sensitivity of the integrated sensor system is -11.4 dBm while the average DC power consumption is measured as 25 μW. The measurements prove the effectiveness of the method for maximum transfer efficiency and the use of ring-oscillator based temperature sensor for in-vivo temperature monitoring.
Year
DOI
Venue
2018
10.1109/RFID.2018.8376200
2018 IEEE International Conference on RFID (RFID)
Keywords
Field
DocType
RFID,integrated system,tag antenna,wireless power transmission,temperature sensing
Front and back ends,Power management,Ring oscillator,Rectifier,Coupling,Electrical impedance,Electronic engineering,Radio frequency,Engineering,Maximum power principle
Conference
ISSN
ISBN
Citations 
2374-0221
978-1-5386-1457-0
0
PageRank 
References 
Authors
0.34
4
3
Name
Order
Citations
PageRank
Onur Kazanc111.39
franco maloberti2123.53
catherine dehollain312941.72