Compact tri-band bandpass filter with controllable frequencies
作者： Jin-Xu Xu , Li Gao , Jun Xiang , Quan Xue
DOI: 10.1002/MOP.29614
关键词: Resonator 、 Transmission line 、 Microwave 、 Acoustics 、 Engineering 、 Electrical impedance 、 Open stub 、 Passband 、 Stub (electronics) 、 Band-pass filter 、 Electronic engineering 、 Electrical and Electronic Engineering 、 Atomic and Molecular Physics, and Optics 、 Electronic, Optical and Magnetic Materials 、 Condensed matter physics
摘要: In this paper, we present a compact tri-band bandpass filter (BPF). The resonator, which consists of main transmission line, center-loaded open stub and side-loaded stub, is utilized to obtain the three resonance frequencies. After selecting impedance each at passband frequencies can be controlled individually. Four zeros are generated enhance selectivity. For demonstration, BPF implemented. Good agreement between measured simulated results presented verify theoretical predication. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:573–577, 2016
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