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A class of novel compact filters with quasi-hairpin structure using stepped-impedance resonators

✍ Scribed by Shry-Sann Liao; Hsien-Ku Chen; Hsien-Yuan Liao; Yin-Cheng Chang

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
412 KB
Volume
45
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A class of novel compact filters with quasi‐hairpin structure using stepped‐impedance resonators (SIRs) is presented. The SIR open stub is used as the loaded structure for the filter design with the merit of small size and sharp transition band (TB). Additionally, these filters achieve sharp TB for lowpass filters (LPFs) and improved selectivity for bandpass filters (BPFs) at 2.45 GHz. All of the filters retain the dimensions of the circuit by more than 60%, as compared to the conventional one. These filters are very useful for applications in wireless‐communication systems. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 251–255, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20787

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