Compact and high-selectivity microstrip bandpass filter using quad-mode resonator
作者： Jianzhong Chen , Jie Sheng , Ni Gao , Anxue Zhang
DOI: 10.1002/MOP.28885
关键词: Microwave 、 Band-pass filter 、 Stub (electronics) 、 Optoelectronics 、 Resonator 、 Passband 、 High selectivity 、 Dielectric resonator antenna 、 Helical resonator 、 Materials science 、 Electronic engineering 、 Electrical and Electronic Engineering 、 Atomic and Molecular Physics, and Optics 、 Electronic, Optical and Magnetic Materials 、 Condensed matter physics
摘要: In this letter, a compact high-selectivity microstrip bandpass filter utilizing novel quad-mode resonator is presented. The proposed can be treated as the combination of short-circuited stub loaded open-ended and short-ended resonator. It results to generate four resonatant modes closely each other, while modal resonant frequency freely easily controlled in wide range well. Due inherent transmission zero produced by feed lines, passband selectivity gets improved, which good out-of-band rejection. Finally, example with miniaturized size, fractional bandwidth, high designed fabricated. Good agreement between experiment simulation observed. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:478–481,
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