Tunability of metamaterial compact band-stop filters using YIG substrate

Aziza Zermane, Bruno Sauviac, Linda Djouablia and Abdelmadjid Benghalia

Journal of Electromagnetic Waves and Applications, 2019, vol. 33, issue 13, 1726-1734

Abstract: In this paper, the design of a tunable and compact metamaterial microstrip band-stop filter is proposed. The device is designed to operate in the X band, it is based on a metamaterial pattern (single-turn square planar resonator) implemented on a ferrite substrate. The study focuses on the metamaterial band-stop filter and on the way to tune its frequency properties. For this reason, the magnetic material is a perfect solution, using YIG (Yttrium Iron Garnet) substrates. As a result, the central frequency of the filter can be tuned by varying the magnetic bias applied to the YIG substrate. A tunability up to 10.81% is obtained. The size of the proposed filter is electrically reduced to 3.7 mm2.

Date: 2019
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DOI: 10.1080/09205071.2019.1632748

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