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H‐shaped SIR bandpass filter with dual and tri‐band
Author(s) -
Xiao JianKang,
Zhu WenJun
Publication year - 2012
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.26888
Subject(s) - band pass filter , passband , resonator , insertion loss , microwave , multi band device , electronic engineering , electrical engineering , wireless , filter (signal processing) , engineering , materials science , telecommunications , antenna (radio)
Compact dual‐band bandpass filter which meets IEEE 802.11 application requirements by using new H‐shaped tri‐section stepped‐impedance resonator is proposed, and a tri‐band bandpass filter which achieves insertion loss of 0.41, 0.66, and 1.65 dB at 2.5, 3.49, and 5.6 GHz, respectively, is also designed with two‐path coupling. The new designs are demonstrated by experiment. The new filters have advantages of compact structures, low passband insertion losses, good frequency selectivity, and miniature circuit sizes. All these have prospect to be applied in future wireless communication systems. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1686–1688, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26888