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Compact cascaded quadruplet bandpass filter using artificial magnetic resonators

Authors
Lee, Tae-HakBaik, Jung-WooKim, Youngsik
Issue Date
4월-2013
Publisher
WILEY-BLACKWELL
Keywords
cascaded quadruplet; bandpass filter; negative-mu; spiral resonator
Citation
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, v.55, no.4, pp.883 - 886
Indexed
SCIE
SCOPUS
Journal Title
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
Volume
55
Number
4
Start Page
883
End Page
886
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/103570
DOI
10.1002/mop.27410
ISSN
0895-2477
Abstract
A compact cascaded quadruplet (CQ) bandpass filter (BPF) using artificial magnetic resonators is proposed in this letter.An artificial magnetic resonator, which has a negative effective permeability at the resonant frequency, consists of a shorted spiral structure. The negative-mu characteristics are extracted from the simulation result of the scattering parameters in a fictitious rectangular waveguide. Compared with the open-loop resonators that are usually used to construct conventional CQ-BPFs, the proposed artificial magnetic resonator achieves about an 80% size reduction ratio. The measured insertion and return losses at a center frequency of 2.14 GHz are approximately 1.83 dB and 21 dB, respectively. The group delay is less than 0.81 ns in the W-CDMA passband. The full-wave simulation results are in good agreement with the measurement results. (c) 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:883886, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27410
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