Multifunctional Ultrahigh Sensitive Microwave Planar Sensor to Monitor Mechanical Motion: Rotation, Displacement, and Stretch
Electrical and Computer Engineering Department, University of Alberta, Edmonton, AB T6G 1H9, Canada
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Author to whom correspondence should be addressed.
†
Deceased 8 January 2020.
Sensors 2020, 20(4), 1184; https://doi.org/10.3390/s20041184
Received: 4 January 2020
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Revised: 16 February 2020
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Accepted: 17 February 2020
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Published: 21 February 2020
(This article belongs to the Special Issue Sensors Based on RF Circuits and Microwave Circuits)
This paper presents a novel planar multifunctional sensor that is used to monitor physical variations in the environment regarding distance, angle, and stretch. A double split-ring resonator is designed at 5.2 GHz as the core operating sensor. Another identical resonator is placed on top of the first one. The stacked configuration is theoretically analyzed using an electric circuit model with a detailed parameter extraction discussion. This design is first employed as a displacement sensor, and a compelling high sensitivity of 500 MHz/mm is observed for a wide dynamic range of 0-5 mm. Then, in another configuration, the stacked design is used as a rotation sensor that results in a high sensitivity of 4.5 MHz/ for the full range of 0-180 . In addition, the stacked resonator is utilized as a strain detector, and a 0–30% stretch is emulated with a linear sensitivity of 12 MHz/%. Measurements are well in congruence with simulated results, which proves the accurate functionality of the sensor in tracking mechanical deformations, all in a single compact contraption.
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Keywords:
double split-ring resonator; displacement; rotation; skew angle; stretch; sensitivity
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MDPI and ACS Style
Abdolrazzaghi, M.; Daneshmand, M. Multifunctional Ultrahigh Sensitive Microwave Planar Sensor to Monitor Mechanical Motion: Rotation, Displacement, and Stretch. Sensors 2020, 20, 1184. https://doi.org/10.3390/s20041184
AMA Style
Abdolrazzaghi M, Daneshmand M. Multifunctional Ultrahigh Sensitive Microwave Planar Sensor to Monitor Mechanical Motion: Rotation, Displacement, and Stretch. Sensors. 2020; 20(4):1184. https://doi.org/10.3390/s20041184
Chicago/Turabian StyleAbdolrazzaghi, Mohammad, and Mojgan Daneshmand. 2020. "Multifunctional Ultrahigh Sensitive Microwave Planar Sensor to Monitor Mechanical Motion: Rotation, Displacement, and Stretch" Sensors 20, no. 4: 1184. https://doi.org/10.3390/s20041184
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