A compact low‐pass filter with ultrabroad stopband characteristics | Zendy

Lan SiangWen | Zendy; Weng MinHang | Zendy; Chang ShoouJinn | Zendy; Hung ChengYuan | Zendy

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A compact low‐pass filter with ultrabroad stopband characteristics

Author(s) -

Lan SiangWen,

Weng MinHang,

Chang ShoouJinn,

Hung ChengYuan

Publication year - 2015

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.29446

Subject(s) - stopband , stub (electronics) , transition band , microwave , materials science , cutoff frequency , resonator , elliptic filter , passband , optoelectronics , low pass filter , electronic engineering , optics , acoustics , physics , band pass filter , filter (signal processing) , prototype filter , electrical engineering , engineering , telecommunications

A compact low‐pass filter (LPF) with ultrabroad stopband characteristic is presented in this article. This filter mainly consists of a rectangular stub resonator and cumulative open‐circuited stubs, providing multiple transmission zeros to form a wide stopband region. Further, two open stub loads are simply adopted to improve the band selectivity. This fabricated LPF exhibits a 3 dB cutoff frequency (f c ) at 1.74 GHz with an average low insertion loss of 0.25 dB and a broad stopband region from 2.6 to 22.8 GHz (10.8ƒ c ) under a high rejection level of 20 dB. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2800–2803, 2015

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