A ULTRA COMPACT WIDEBAND BANDPASS FILTER USING A QUADMODE STUB-LOADED RESONATOR | Zendy

ZhiChong Zhang | Zendy; Haiwen Liu | Zendy

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A ULTRA COMPACT WIDEBAND BANDPASS FILTER USING A QUADMODE STUB-LOADED RESONATOR

Author(s) -

ZhiChong Zhang,

Haiwen Liu

Publication year - 2018

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/pierl18042902

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

An ultra compact microstrip wideband bandpass filter (BPF) using a quadmode stubloaded resonator is presented in this letter. The resonant characteristics of the quadmode resonator are explored by adopting oddand even-mode analysis. The four resonant frequencies of this resonator can be controlled independently. For demonstration purpose, a wideband BPF is designed, fabricated and measured. The measured results are in good agreement with the full-wave simulation results. The realized wideband filter exhibits a 3 dB fractional bandwidth (FBW) of 45% with good in-band filtering performance and sharp out-of-band rejection skirt.

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