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The zero power sensor network represents a platform that enables fully passive wireless sensing based on the third order intermodulation principle. This work describes the development and evaluation of a zero power reader device. Results from the initial characterization are presented for the evaluation of the reader's performance in sensor readout at a distance of 5 m. The limitations affecting the...
A key barrier to the penetration of IoT technologies is the need for an independent power source for sensor nodes, increasing complexity and cost and hindering the convenience of deployment and maintenance. To address this formidable challenge, the authors have been developing a fully passive wireless sensor network platform, the Zero Power Sensor. The sensing mechanism is by now maturing and a platform...
Intermodulation sensor concept is a solution for intelligent sensing: sensing is wireless and passive. It provides communication distances of several meters, high accuracy, and compliancy with the frequency regulations. The operation of the intermodulation sensor transponder is based on passive mixer diode loaded by a sensor resonator. We introduce the sensor concept, analyze the range of the system,...
This paper describes a passive wireless sensor platform where passive components are realized using the Integrated Passive Device (IPD) process. The sensor platform utilizes the intermodulation communication principle. The concept is experimentally verified with a MEMS accelerometer sensor used to measure the sensor's inclination in a static gravitational field. Results show that inclination can be...
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