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Design of tri-band microstrip bandpass filter using folded tri-section stepped-impedance resonator

✍ Scribed by Haiwen Liu

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

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✦ Synopsis

Abstract

A tri‐band microstrip bandpass filter using folded tri‐section stepped‐impedance resonators is designed, analyzed, and fabricated in this article.Furthermore, the filter's coupling structure analysis and equivalent circuit model are discussed theoretically, and the design methodology of tri‐band filter is explained. Simulated and measured results verify that the central frequencies of the three passbands are located at about 1.6, 2.3, and 4.3 GHz, respectively. Besides, the circuit size of the proposed filter occupies only 26 × 26 mm^2^ (≈ 0.22λ~g~ × 0.22λ~g~). © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:895–898, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25063

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