Low permittivity cordierite-based microwave dielectric ceramics for 5G/6G telecommunications
Reaney, Ian M.
AffiliationHangzhou Dianzi University; University of Chester; University of Science and Technology of China; Chinese Academy of Sciences; Foshan University; Zhejiang Jiaxing Glead Electronic Co. Ltd; Xi’an Jiaotong University; University of Sheffield
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Abstract5G and forthcoming 6G communication systems require dielectric ceramics with low relative permittivity (εr) and near-zero temperature coefficient of resonant frequency (τf) for the lower part of the microwave (MW) band and at sub-Terahertz. Mg2Al4Si5O18 (MAS) ceramics are promising candidates due to their low εr (~6) and high-quality factor (Q×f >40,000 GHz) but have a large f. In this study, 5.5wt% TiO2 (MAS-T5.5) was used to adjust τf of MAS to -2.8 ppm/℃ whilst retaining low εr (5.24) and good Q×f (33,400 GHz), properties consistent with those obtained by infrared reflectance. A demonstrator microstrip patch antenna with gain 4.92dBi and 76.3% efficiency was fabricated from MAS-T5.5.
CitationLou, W., Mao, M., Song, K., Xu, K., Liu, B., Li, W., Yang, B., Qi, Z., Zhao, J., Sun, S., Lin,H., Hu, Y., Zhou, D., Wang, D., & Reaney, I. M. (2022). Low permittivity cordierite-based microwave dielectric ceramics for 5G/6G telecommunications. Journal of the European Ceramic Society, 42(6), 2820-2826. https://doi.org/10.1016/j.jeurceramsoc.2022.01.050
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