Remote Powering Link for a Passive UHF RFID Tag for Capacitive Sensor Applications

This work discusses the remote powering link of a passive UHF RFID tag for sensor applications. The design, implementation, and measurements of the base-station antenna, tag antenna, and the rectifier are presented. The base-station antenna is a 50 Ω rectangular patch antenna with a measured far-field gain of 3.6 dBi. The tag antenna is an inductively coupled meandered dipole antenna impedance matched to the tag chip. The measured far-field gain of the tag antenna is 1.2 dBi. The three-stage, differential-input rectifier is measured to deliver 1 mW to a 5 kΩ load with a power conversion efficiency of 65% at a distance of 1.5 meters from the base station. The rectifier is implemented in 0.18 μm UMC CMOS process.


Published in:
2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS), 823-826
Presented at:
2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS), Abu Dhabi, United Arab Emirates, 8-11 December 2013
Year:
2013
Publisher:
IEEE
Keywords:
Laboratories:




 Record created 2014-05-23, last modified 2018-01-28


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