DESIGN OF TRIBAND BANDSTOP FILTER USING AN ASYMMETRICAL CROSS-SHAPED MICROSTRIP RESONATOR
Author(s) -
Shujun Yang,
Zhigang Xiao,
S. Budak
Publication year - 2019
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/pierl19051306
Subject(s) - band stop filter , resonator , microstrip , acoustics , filter (signal processing) , electronic engineering , physics , engineering , low pass filter , optoelectronics , electrical engineering
An asymmetrical cross-shaped microstrip resonator is proposed. It is analyzed on its characteristic impedance and resonant conditions. A first order triband bandstop filter (BSF) and a second order triband BSF are designed using this resonator. Both filters are simulated on Sonnet Suite software. Simulation results show that both filters generate three attenuation poles at 2.0, 3.0, and 4.5 GHz. The second order BSF is also fabricated and measured using a microwave network analyzer. Simulation and measurement results on the second order BSF agree well.
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