NOVEL TRI-BAND BANDPASS FILTER USING STUB-LOADED SHORT-ENDED RESONATOR | Zendy

Xiu Yin Zhang | Zendy; Li Gao | Zendy; Ze Cai | Zendy; Xiao-Lan Zhao | Zendy

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NOVEL TRI-BAND BANDPASS FILTER USING STUB-LOADED SHORT-ENDED RESONATOR

Author(s) -

Xiu Yin Zhang,

Li Gao,

Ze Cai,

Xiao-Lan Zhao

Publication year - 2013

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.245

H-Index - 33

ISSN - 1937-6480

DOI - 10.2528/pierl13040205

Subject(s) - stub (electronics) , band pass filter , resonator , materials science , optoelectronics , electronic engineering , acoustics , physics , engineering

This paper presents a tri-band bandpass filter (BPF) using a novel stub-loaded resonator. Different from other stub-loaded resonator, this resonator utilized a short-ended main transmission line and a centerly-loaded open stub. The resonator is theoretically analyzed. The first three resonant frequencies can be individually adjusted and this enables the convenient designs of tri-band BPFs. For demonstration, a tri-band BPF is implemented. Transmission zeros are created close to each passband edge, resulting in high skirt selectivity. Comparisons of the measured and simulated results are presented to verify the theoretical predications.

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