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Wideband bandpass filter for MB-OFDM application

✍ Scribed by Ching-Her Lee; Chung-I G. Hsu; Lian-Yu Chen

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

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✦ Synopsis

Abstract

This article presents a wideband bandpass filter (BPF) designed using novel multimode resonators (MMRs). The MMR is formed by combining two quarter‐wavelength (λ/4) stepped‐impedance resonators (SIRs) in a structure‐shared fashion. The fundamental resonant frequency of the inherent λ/4 SIR and that of the embedded half‐wavelength (λ/2) SIR were designed to locate in the passband of the BPF to achieve a wideband response. Experiments on a prototype wideband BPF were carried out for validating the filter design. The fabricated BPF was measured to have a large bandwidth of 1:2.2 with an insertion loss of less than 0.86 dB and a small group‐delay variation of not more than 0.11 ns in the passband. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2587–2590, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23722

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