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A right slotted patch dual‐mode dual band bandpass filter used for WLAN
Author(s) -
Su YanKuin,
Chen JauRung,
Weng MinHang,
Hung ChengYuan
Publication year - 2009
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.24078
Subject(s) - passband , band pass filter , resonator , multi band device , microwave , attenuation , bandwidth (computing) , center frequency , physics , dual mode , acoustics , electronic engineering , topology (electrical circuits) , engineering , electrical engineering , materials science , optoelectronics , optics , telecommunications , antenna (radio)
We proposed a novel dual‐mode dual band bandpass filter (BPF) operating at 2.4/5.7 GHz by using a right cross‐slotted patch resonator (RCSPR) combined with a pair of square etched areas (SEAs). A pair of right crossed slot embedded in the center of the patch resonator is used to tune the resonant modes having 2.4/5.7 GHz responses. In this design, a pair of SEAs etched within the RCSPR is provided to be the perturbation element to generate the filter performance with the transmission zeros near the passband edges. It is shown that the fabricated filter has good dual‐band performances at 2.4/5.7 GHz with high selectivity, narrow bandwidth, and very sharp attenuation rate due to the existence of the transmission zeros. Measured results of the fabricated BPF have a good agreement with the full‐wave simulation results. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 491–494, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24078