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A compact meandering bandpass filter with dual passband performance for 2.4/5.7 GHz WLANs
Author(s) -
Kuan Hon
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.23267
Subject(s) - passband , band pass filter , resonator , microwave , multi band device , electronic engineering , electrical impedance , wireless , electrical engineering , physics , wi fi , engineering , acoustics , telecommunications , antenna (radio) , wireless network
In this letter, a compact dual‐band bandpass filter (BPF) using the meandering stepped impedance resonators (MSIRs) for the wireless local area networks (WLANs) is proposed. The dual‐band performance of the BPF is adjusted by the physical length (α) and impedance ratio (K) of the MSIRs. The proposed BPF is designed and fabricated, showing good dual‐passband responses at 2.4/5.7 GHz and a high isolation between the two passbands. The overall circuit size of the BPF is much smaller than the previous work. Good agreement with response of electromagnetic (EM) simulation and measurement is obtained. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 969–971, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23267