A Wireless Metamaterial-Inspired Passive Rotation Sensor With Submilliradian Resolution

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Date

2018-06-01

Author

Gargari, Ali Maleki
Ozbey, Burak
DEMİR, Hilmi Volkan
ALTINTAŞ, AYHAN
Albostan, Utku
Kurç, Özgür
ERTÜRK, VAKUR BEHÇET

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A novel passive wireless rotation sensing system with high levels of sensitivity and resolution is proposed and demonstrated for measuring elastic-region bending in materials such as steel. This system is composed of a transceiver antenna and a double-plate sensor in the form of an inter-digital configuration, which does not incorporate any active component. The sensor exhibits a large rotation resolution of 20 mu-rad, an excellent sensitivity of 28 MHz/degrees in average, and a large linear dynamic range of approximately 40 degrees. In operation, as a result of the relative rotation between the plates of the sensor, the operating resonance frequency of the system is shifted. This is read out and tracked in the S-11 response of the transceiver antenna from which the rotation angle is determined. The prototype is designed for microwave regime and it is suitable for measuring very small angles (10(-4) similar to 10(-5) rad). Critical figuresof-merit of the sensor including sensitivity, dynamic range, and resolution are assessed via systematic measurements, and the validity of resolution experiment is verified by employing digital image correlation method for 2-D measurements.

Subject Keywords

Wireless passive sensing system, Rotation sensor, Metamaterial-inspired sensor

URI

https://hdl.handle.net/11511/39840

Journal

IEEE SENSORS JOURNAL

DOI

https://doi.org/10.1109/jsen.2018.2822671

Collections

Department of Civil Engineering, Article

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Citation Formats

A. M. Gargari et al., “A Wireless Metamaterial-Inspired Passive Rotation Sensor With Submilliradian Resolution,” IEEE SENSORS JOURNAL, pp. 4482–4490, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39840.