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Compact microstrip bandpass filter using modified stepped-impedance hairpin resonator

✍ Scribed by Wen-Hua Tu

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
352 KB
Volume
50
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A modified compact stepped‐impedance hairpin resonator using an interdigital capacitor and its application to a bandpass filter design are presented. In comparison to the coupled line of a conventional stepped‐impedance hairpin resonator, the interdigital capacitor of the proposed resonator achieves a bigger parallel capacitance. Hence, the proposed resonator can achieve a compact size and a wider harmonic‐free bandwidth. Comparing the measured results of the two bandpass filters using the conventional resonators or the modified resonators suggests that the bandpass filter using the proposed resonators achieves a superior performance. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2007–2010, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23559

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