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A wireless and batteryless sensor node powered via 2-D waveguide sheet

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2 Author(s)
Akihito Noda ; Department of Information Physics and Computing, The University of Tokyo, Tokyo 113-8656, Japan ; Hiroyuki Shinoda

Two-dimensional waveguide power transmission (2DWPT) has been recently improved in efficiency and in electromagnetic compatibility (EMC). In this paper, we present the first EMC-compliant 2DWPT-powered wireless sensor system. The efficiency, from the RF input into the sheet to the dc output of a rectifying coupler, is 40.4% at a maximum, where the sheet has nearly 100 times larger area than the coupler. The first 2DWPT-powered sensor platform device is developed by integrating the high-efficiency rectifying coupler and a Bluetooth data acquisition/transmission module. We present a trial system in which a dc output voltage of an arbitrary sensor connected to the analog input port is monitored on the remote computer every 100 milliseconds in real-time. The proposed device can support power-consuming continuous data-streaming without battery life limitation.

Published in:

Networked Sensing Systems (INSS), 2012 Ninth International Conference on

Date of Conference:

11-14 June 2012