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Temperature characterization of high-Q resonators of different materials for mm-wave indoor localization tag landmarks

: Jiménez-Sáez, Alejandro; Schüßler, Martin; Pandel, Damian; Krause, Christopher; Zhao, Yixiong; Bögel, Gerd vom; Benson, Niels; Jacoby, Rolf


European Association on Antennas and Propagation -EurAAP-; Institute of Electrical and Electronics Engineers -IEEE-:
14th European Conference on Antennas and Propagation, EuCAP 2020 : 15 - 20 March 2020, Copenhagen, Denmark, online
Piscataway, NJ: IEEE, 2020
ISBN: 978-1-7281-3712-4
ISBN: 978-88-31299-00-8
5 pp.
European Conference on Antennas and Propagation (EuCAP) <14, 2020, Online>
Deutsche Forschungsgemeinschaft DFG
287022738 Teilprojektnr. 336627137; MARIE
TRR 196 Mobile Material-Charakterisierung und -Ortung durch Elektromagnetische Abtastung: Teilprojekt C09: RFID-Tags zur Sub-mm-Lokalisierung
Deutsche Forschungsgemeinschaft DFG
287022738; MARIE
TRR 196 Mobile Material-Charakterisierung und -Ortung durch Elektromagnetische Abtastung: Teilprojekt C13: 3D-gedruckte dielektrische Strukturen für THz-Anwendungen
Conference Paper
Fraunhofer IMS ()
chipless tag; transponder; radio frequency identification (RFID); photonic crystals; temperature-stability

This paper discusses a temperature-dependent characterization of deep reactive ion-etched 10 kΩ cm high-resistive silicon (DRIE HR-Si), 3D printed alumina (Al2O3) and milled Rogers RT/Duroid® 6010.2LM. The characterization is performed by measuring high-Q photonic crystal resonator samples in W-band and the measurements are taken from 30∘C to 115∘C. HR-Si is the material with the lowest losses at room temperature. However, its losses increase with temperature and become higher than 3D printed alumina at 75°C, reducing the radar cross-section and maximum readout range of chipless wireless RFID tags integrating several of these resonators. These results demonstrate that, while HR-Si performance is higher for the usual temperatures achieved in an indoor localization scenario, 3D printed alumina is more suitable if a temperature-stable response is needed or if the tags need to operate at high temperatures, such as in case of fire.