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Compact dual‐band bandpass filter using stepped impedance resonators
Author(s) -
Xu HeMing,
Xiao ZhongYin,
Hu HongHong
Publication year - 2008
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.23357
Subject(s) - band pass filter , resonator , microwave , multi band device , electrical impedance , insertion loss , electronic engineering , materials science , filter (signal processing) , optoelectronics , electrical engineering , physics , acoustics , engineering , telecommunications , antenna (radio)
A new dual‐band bandpass filter (BPF) for 2.4/5.2 GHz WLAN systems using two‐stepped impedance resonators is presented. With new properly coupled structure, this filter appears very compact and easy to be fabricated. Measured results show that this BPF has low insertion loss of 0.3 dB at 2.4 GHz and 0.7 dB at 5.2 GHz, and wide fractional bandwidths of 30% for the first band and 17% for the second band, respectively. Measured results are in good agreement with the simulated ones. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1292–1294, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23357