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A right slotted patch dual-mode dual band bandpass filter used for WLAN

✍ Scribed by Yan-Kuin Su; Jau-Rung Chen; Min-Hang Weng; Cheng-Yuan Hung

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
328 KB
Volume
51
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

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

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