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A novel compact dual-band bandpass filter using spiral-shaped microstrip resonators

✍ Scribed by Chien-Hsiang Huang; Hsiao-Chun Li; Chien-Hsun Chen; Tzyy-Sheng Horng

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
427 KB
Volume
52
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this letter, a dual‐band bandpass filter is proposed by consisting of spiral‐shaped microstrip resonators. Meanwhile, a skew‐symmetric tapped feed structure is applied to introduce two transmission zeros on both sides of individual passbands, and thereby improve the filter selectivity. The measured results of the designed third‐order dual‐band bandpass filter for 2.4/5.2 GHz wireless local area network applications are in good agreement with the simulated predictions. Moreover, the filter has a size reduction of 40%, as compared with the conventional square open‐loop bandpass filters. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 543–547, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24965

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