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2020-10-16
Miniaturized Multi-Band Stopband Filter Using Circular Split Ring Resonator and Null Gap Separations Between All Parallel Lines
By
Progress In Electromagnetics Research C, Vol. 106, 137-150, 2020
Abstract
This paper presents a new multi-band stopband filter loaded by a shorted metamaterial circuit. Firstly, two filters loaded by stubs and open ring resonators (ORRs) are studied and compared. The ORRs allow more effects in terms of miniaturization by a shifting toward low frequencies and rejection bandwidth (57.34%). To improve the filter efficiency, coupled split ring resonators (SRRs) are used. The final filter is characterized by a miniaturized size of 18.8 x 40 mm2, wide rejection bandwidth, high selectivity level and multiple resonances over S, C, X and Ku bands. L-C equivalent circuit model filter and other characteristics are investigated. A prototype of the filter with coupled SRRs has been fabricated and measured. Good matching among EM-simulation, equivalent circuit modelling, and measured results are achieved.
Citation
Badiaa Ait Ahmed, Otman Aghzout, Azzeddin Naghar, and Ana Vazquez Alejos, "Miniaturized Multi-Band Stopband Filter Using Circular Split Ring Resonator and Null Gap Separations Between All Parallel Lines," Progress In Electromagnetics Research C, Vol. 106, 137-150, 2020.
doi:10.2528/PIERC20072504
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