@article{0cf150eed5f04bc9a4993d5c1454e530,
title = "High-Selectivity Bandpass Filter Based on Two Merged Ring Resonators",
abstract = "A high-selectivity bandpass filter (BPF) based on two merged ring resonators is presented in this paper. The structure of this proposed BPF can be seen as the two one-wavelength ring resonators merged each other by sharing the common λ/2 microstrip line. Due to symmetric structure, it can be analyzed by even- and odd-mode method and the locations of six transmission zeros are calculated using input impedance deductions. For further demonstration, a BPF example centered at 2 GHz is fabricated with high frequency selectivity. The measured 3-dB fractional bandwidth is 11% (1.89–2.11 GHz) and insertion loss is less than 2 dB in the passband. Good agreement between simulation and measurement verifies the feasibility of the design method.",
keywords = "Bandpass filter, coupled-line structures, high selectivity, transmission zeros",
author = "Weng, {Xiao Yu} and Xu, {Kai Da} and Guo, {Ying Jiang} and Zhang, {An Xue} and Qiang Chen",
note = "Funding Information: Kai-da XU was born in Zhejiang, China. He received the B.E. and Ph.D. degrees in Electromagnetic Field and Microwave Technology from the University of Electronic Science and Technology of China (UESTC), Chengdu, China, in 2009 and 2015, respectively. From 2012 to 2014, he was a Visiting Researcher with the Department of Electrical and Computer Engineering, Duke University, Durham, NC, USA. In 2015, he joined the Department of Electronic Science, Xiamen University, Xiamen, China as an Assistant Professor. From 2016 to 2017, he was a Postdoctoral Fellow with the State Key Laboratory of Millimeter Waves, City University of Hong Kong, Hong Kong. From 2018 to 2019, he was an Honorary Fellow with the Department of Electrical and Computer Engineering, University of Wisconsin–Madison, WI, USA. He was successfully selected into the “Youth Talent Support Program” of Xi'an Jiaotong University (XJTU) in May 2019, and joined the School of Information and Communications Engineering in XJTU in January 2020. Also, he was awarded a fellowship from the Japan Society for the Promotion of Science (JSPS) and joined the Department of Communications Engineering, Graduate School of Engineering, Tohoku University, as the JSPS Fellow in November 2019. He has authored and coauthored over 100 papers in peer-reviewed journals and over 40 papers in conference proceedings. He received the UESTC Outstanding Graduate Awards in 2009 and 2015, respectively. He was the recipient of National Graduate Student Scholarship in 2012, 2013, and 2014 from the Ministry of Education, China. Since 2017, he has served as an Associate Editor for both of the IEEE Access and Electronics Letters. He is also an Editorial Board Member of the AE{\"U}-International Journal of Electronics and Communications. His current research interests include RF/microwave, mm-wave/THz devices and antenna arrays. Ying-jiang GUO was born in Sichuan, China. He received the B.E. and Ph.D. degrees in Electronic Engineering from the Sichuan University and University of Electronic Science and Technology in China, Chengdu, China in 2008 and 2018, respectively. From 2011 to 2013, he was with the Huawei Technologies Co., Ltd., where he was involved in the research of 5G communication prototype design. From 2013 to 2014, he was with the Sichuan Normal University, where he was a lecturer. Since 2018, he has been with Microsystem and Terahertz Research Center in China Academy of Engineering Physics as an assistant research fellow and focuses on the terahertz integrated circuits and communication technologies. He has authored or coauthored over 30 journal and conference papers. He holds over 5 patents in wireless communication. His research interests include the RF/microwave/mm-wave integrated circuits, THz modules/antennas, and systems in package. Funding Information: This work was supported in part by the FY2019 Japan Society for the Promotion of Science (JSPS) Postdoctoral Fellowship for Research in Japan under Grant P19350 and in part by the Grant-in-Aid for JSPS Research Fellow under Grant JP19F19350. Publisher Copyright: {\textcopyright} 2021. All Rights Reserved.",
year = "2021",
month = sep,
doi = "10.13164/re.2021.0504",
language = "English",
volume = "30",
pages = "504--509",
journal = "Radioengineering",
issn = "1210-2512",
publisher = "Czech Technical University",
number = "3",
}