Design and fabrication of a C-band patch antenna using novel low permittivity SrGa2Si2O8 microwave dielectric ceramic |
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| Affiliation: | 1. School of Optical and Electronic Information, Key Lab of Functional Materials for Electronic Information (B) of MOE, Huazhong University of Science and Technology, Wuhan, PR China;2. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, PR China;3. Aerospace Nanhu Electronic Information Technology Co., Ltd, Wuhan, Hubei Province, PR China;4. Wenzhou Advanced Manufacturing Institute, Huazhong University of Science and Technology, Wenzhou, PR China;5. College of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, PR China;1. Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China;2. School of Mechanical Engineering, Guilin University of Aerospace Technology, Guilin 541004, China;3. Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin 541004, China;1. Yantai University, Yantai, 264005, Shandong, China;2. Department of Physics and Astronomy, KU Leuven, 3001, Leuven, Belgium;3. Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing, Yantai, Shandong, 265503, China;4. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China;1. School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China;2. School of Integrated Circuit Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China;3. State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;4. School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;1. Yantai University, Yantai, 264005, Shandong, China;2. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China;3. School of Materials Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China;4. Shandong Tongfang Luying Electronic Co., Ltd., Yinan, 276300, Shandong, China;1. College of Materials Science and Engineering, Hunan University, Changsha, 410082, China;2. College of Electrical and Information Engineering, Hunan University, Changsha, 410082, China;1. School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, 221116, China;2. School of Environment and Material Engineering, Yantai University, Yantai, 264005, China |
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| Abstract: | A novel microwave dielectric ceramic of SrGa2Si2O8 was synthesized using the traditional solid-state method. Its phase composition, microstructure, and microwave dielectric properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and network analyzer. XRD results indicated that the space group of the ceramic transformed from I2/c to P21/a at 700 °C. A combination of good microwave dielectric properties was obtained at 1260 °C with εr = 6.3, Q×f= 96,600 GHz and τf = ?45.2 ppm/°C at 16.5 GHz. The negative τf can be tuned to near zero by adding 15 mol% CaTiO3. The densification temperature can be reduced to 940 °C by adding 4 wt% LiF. Moreover, the SrGa2Si2O8 ceramic had good chemical compatibility with the Ag electrode. A patch antenna was designed using the 0.85SrGa2Si2O8 + 0.15CaTiO3 + 4 wt% LiF ceramic. The antenna had a high radiation efficiency of 99.2 % and a gain of 2.988 dBi at the center frequency of 4.261 GHz. All results indicated that the SrGa2Si2O8 ceramic has promising potential for applications in 5 G wireless communication technology. |
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| Keywords: | Microwave dielectric properties LTCC Patch antenna |
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