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Type: Journal article
Title: Displacement sensor based on diamond-shaped tapered split ring resonator
Author: Karami Horestani, A.
Fumeaux, C.
Al-Sarawi, S.
Abbott, D.
Citation: IEEE Sensors Journal, 2013; 13(4):1153-1160
Publisher: The Institute of Electrical and Electronic Engineers Inc.
Issue Date: 2013
ISSN: 1530-437X
Statement of
Ali Karami Horestani, Christophe Fumeaux, Said F. Al-Sarawi, and Derek Abbott
Abstract: Split-ring resonators (SRRs) are ideal structures for the realization of compact high-sensitivity and high-resolution sensors due to their high-quality factor resonance, compact size, and high sensitivity to changes in the constituent materials and physical dimensions. This paper presents a displacement sensor based on a diamond-shaped tapered SRR coupled to a coplanar waveguide. Two significant improvements over previous designs are reported. Firstly, the proposed sensor has higher dynamic range and linearity for displacement sensing. Secondly, compared with previous designs, where the displacement changes both the resonant frequency and depth of the transmission notch, the proposed sensor has a fixed resonant frequency. This is an important improvement since the sensor can be operated at a single fixed frequency and bypass the need for a frequency-sweeping microwave source and measurement system such as an expensive network analyzer. It is shown that, while preserving the compact size, the proposed sensor also benefits from a lower operating frequency. The design principle and simulation results are validated through measurement.
Rights: © 2012 IEEE
DOI: 10.1109/JSEN.2012.2231065
Appears in Collections:Aurora harvest 4
Electrical and Electronic Engineering publications

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