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Dual‐band bandpass filter based on λ /4‐resonators for Wi‐Fi application
Author(s) -
Barbuddhye Vinod,
Kakade Anandrao
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.29426
Subject(s) - feko , band pass filter , passband , resonator , electronic filter topology , filter (signal processing) , electronic engineering , m derived filter , microwave , constant k filter , multi band device , physics , high pass filter , waveguide filter , electrical engineering , prototype filter , filter design , engineering , acoustics , optoelectronics , low pass filter , telecommunications , antenna (radio)
This article presents, a novel dual‐band bandpass filter based on λ/4 uniform impedance resonators (UIRs). The design consists of four λ/4 UIRs, two for each band. The λ/4‐resonators are coupled through alternate J/K‐inverters. A weak input–output coupling is introduced to add pair of transmission zeros outside each passband, which improves the cut‐off of the filter. The filter is designed for Wi‐Fi 2.4 and 3.6 GHz bands. The filter is designed in FEKO electromagnetic simulator using FR‐4 substrate having dielectric constant 4.4 and thickness of 1.6 mm. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2758–2761, 2015