Low permittivity cordierite-based microwave dielectric ceramics for 5G/6G telecommunications |
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| Affiliation: | 1. College of Electronic Information, Hangzhou Dianzi University, Hangzhou 310018, China;2. Faculty of Science and Engineering, University of Chester, Chester CH1 4BJ, UK;3. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;4. Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;5. School of Material Science and Energy Engineering, Foshan University, Foshan, Guangdong 528000, China;6. Key Laboratory of Inorganic Functional Material and Device, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;7. Zhejiang Jiaxing Glead Electronic Co. Ltd., Jiaxing 314003, China;8. School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China;9. Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, UK;1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;2. Yangtze River Delta Research Institute of UESTC (Huzhou), Huzhou 313000, China;1. School of Microelectronics, Tianjin University, Tianjin, 300072, China;2. Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China;3. Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology, Tianjin University, Tianjin, 300072, China;1. National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu, China;2. Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, University of Electronic Science and Technology of China, Chengdu, 610054, China;1. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi''an 710072, China;2. Institute of Culture and Heritage, Northwestern Polytechnical University, Xi''an 710072, China;1. Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, 443002, China;2. Guangxi Key Laboratory of Optical and Electronic Materials and Devices. College of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China;3. College of Information Science and Engineering, Guilin University of Technology, Guilin, 541004, China |
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| Abstract: | 5G 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 τf. In this study, 5.5 wt% 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 4.92 dBi and 76.3% efficiency was fabricated from MAS-T5.5. |
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| Keywords: | Cordierite Low permittivity Terahertz Patch antenna |
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