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A two-pole 900/1800-MHz microstrip filter for dual-band applications

✍ Scribed by Xuehui Guan; Zhewang Ma; Peng Cai; Tetsuo Anada; Gen Hagiwara

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 185 KB
Volume: 48
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.21639

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✦ Synopsis

Abstract

A two‐pole 900/1800‐MHz dual‐band bandpass filter using microstrip open‐loop resonators is proposed. Dual‐band characteristics are obtained by using the fundamental and first spurious resonance of the resonators. Both the internal and external couplings of the filter are appropriately designed to simultaneously satisfy the dual‐band requirements. The measured filtering characteristics of the designed filter agree well with the simulated responses. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1388–1391, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21639

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A novel dual-mode microstrip filter operating at 900 MHz is proposed using degenerate modes of a microstrip-loop resonator. The resonator structure that is formed of meandered microstrip-line elements has a smaller size than the other dual-mode microstrip resonators in the literature. The dual-mode