Metamaterial-inspired rotation sensor with wide dynamic range

Ebrahimi, A, Withayachumnankul, W, Al-Sarawi, S and Abbott, D 2014, 'Metamaterial-inspired rotation sensor with wide dynamic range', IEEE Sensors Journal, vol. 14, no. 8, pp. 2609-2614.

Document type: Journal Article
Collection: Journal Articles

Title Metamaterial-inspired rotation sensor with wide dynamic range
Author(s) Ebrahimi, A
Withayachumnankul, W
Al-Sarawi, S
Abbott, D
Year 2014
Journal name IEEE Sensors Journal
Volume number 14
Issue number 8
Start page 2609
End page 2614
Total pages 6
Publisher IEEE
Abstract A rotation sensor with a wide dynamic range is designed based on tapered U-shaped resonators. The proposed device is composed of a rounded microstrip transmission line that couples to two meandered resonators that are stacked on top of each other. By rotating the upper resonator, the overlapping area between the two resonators is increased causing a stronger coupling that shifts down the resonance frequency of the device. This frequency shift can be read out in the transmission response from which the rotation angle is determined. The operation principle of the sensor is explained in detail by using a circuit model. A sensor prototype is designed for the microwave frequency range and an experiment is presented for validating the proposed sensing approach. This sensing device is well suited for further miniaturization using microelectromechanical systems technology.
Subject Electrical and Electronic Engineering not elsewhere classified
Circuits and Systems
Keyword(s) Metamaterial-inspired sensor
rotation sensor
split-ring resonator
DOI - identifier 10.1109/JSEN.2014.2313625
Copyright notice © 2014 IEEE
ISSN 1530-437X
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