All-Ceramic mm-Wave Chipless Sensors for Wireless Temperature Sensing over 1000 °C in Cluttered and Obstructed Environments

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F26%3A0199794" target="_blank" >RIV/00216305:26220/26:0199794 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
All-Ceramic mm-Wave Chipless Sensors for Wireless Temperature Sensing over 1000 °C in Cluttered and Obstructed Environments
Original language description
Millimeter-wave (mm-Wave) chipless and wireless sensors capable of continuous operation under extreme environmental conditions remain largely unavailable, particularly for dynamic scenarios involving high temperatures and strong electromagnetic clutter. We have recently presented a fully dielectric, wireless temperature sensor specifically designed for operation beyond 1000 °C. The sensor is based on high-Q resonant cavities embedded within a three-dimensional photonic crystal structure, exhibiting two resonance peaks at 83.5 GHz and 85.5 GHz. To enhance the Radar Cross Section (RCS) and interrogation range, a flattened Luneburg lens is integrated in the sensor. The device is fabricated using Lithography-based Ceramic Manufacturing (LCM) with Alumina (Al₂O₃). Measurements demonstrate that the frequency-coded backscattered signal remains detectable at distances up to 50 cm and temperatures up to 1200 °C. The resonance frequencies exhibit a temperaturedependent shift, which is in good agreement with Al₂O₃ values reported in the literature. A similar sensor has been demonstrated with a one-dimensional photonic crystal, demonstrating the suitability of these chipless RFID sensors in harsh environments.
Czech name
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Czech description
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Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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