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Compact notch filter design using stepped impedance resonators for sharp roll‐off and large wideband rejection
Author(s) -
Asadbeigi H.,
Virdee B. S.
Publication year - 2015
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20883
Subject(s) - resonator , band stop filter , wideband , filter (signal processing) , electrical impedance , microwave , acoustics , materials science , electronic engineering , optoelectronics , electrical engineering , low pass filter , engineering , physics , telecommunications
ABSTRACT This article presents the design of a compact notch filter with a sharp roll‐off and high rejection over a wideband. The filter comprises stepped impedance resonators that are interconnected to each other at strategic points on the resonator for optimal 3 dB roll‐off and high rejection over a wide stop‐band. The fabricated third‐order filter exhibits a steep 3 dB roll‐off and rejection exceeding 50 dB over the frequency range 2.70–6.19 GHz. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 25:490–494, 2015.