Development of metamaterial based low cost passive wireless temperature sensor

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Proceedings of SPIE - The International Society for Optical Engineering, ISSN: 1996-756X, Vol: 9061

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Jerome P. Lynch; Kon-Well Wang; Hoon Sohn; Hasanul Karim; Mohammad Arif Ishtiaq Shuvo; Diego Delfin; Yirong Lin; Ahsan Choudhuri; R. C. Rumpf
SPIE-Intl Soc Optical Eng
Materials Science; Physics and Astronomy; Computer Science; Mathematics; Engineering; Electrical and Computer Engineering
conference paper description
Wireless passive temperature sensors are gaining increasing attention due to the ever-growing need of precise monitoring of temperature in high temperature energy conversion systems such as gas turbines and coal-based power plants. Unfortunately, the harsh environment such as high temperature and corrosive atmosphere present in these systems limits current solutions. In order to alleviate these issues, this paper presents the design, simulation, and manufacturing process of a low cost, passive, and wireless temperature sensor that can withstand high temperature and harsh environment. The temperature sensor was designed following the principle of metamaterials by utilizing Closed Ring Resonators (CRR) embedded in a dielectric matrix. The proposed wireless, passive temperature sensor behaves like an LC circuit that has a resonance frequency that depends on temperature. A full wave electromagnetic solver Ansys Ansoft HFSS was used to perform simulations to determine the optimum dimensions and geometry of the sensor unit. The sensor unit was prepared by conventional powder-binder compression method. Commercially available metal washers were used as CRR structures and Barium Titanate (BTO) was used as the dielectric materials. Response of the fabricated sensor at room temperature was analyzed using a pair of horn antenna connected with a network analyzer. © 2014 SPIE.