A fast roll-off dual-bandpass frequency selective surface for radome applications

Gundu Venkatesh and M. Thottappan

Journal of Electromagnetic Waves and Applications, 2025, vol. 39, issue 16, 1930-1939

Abstract: This paper presents, a dual-bandpass frequency selective surface (FSS) designed for TM polarized waves. The FSS unit cell comprises a dielectric substrate sandwiched between two conducting layers. The top conducting layer features two magnetic resonators, while the bottom layer has two pairs of electric resonators, collectively providing a fast roll-off bandpass characteristic. The conventional single slot layer bandpass structure exhibits slower roll-off, which prompted us to make improvements. By incorporating two stop-bands and carefully adjusting their positions at the pass band edges, we successfully achieved a fast roll-off. To validate the simulation results, we fabricated a prototype of the proposed FSS and conducted experimental testing. The results of the experimental tests confirmed the effectiveness and efficiency of the proposed design.

Date: 2025
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DOI: 10.1080/09205071.2025.2532021

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