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Theoretical and Experimental Investigation on A Slot Loaded Compact Multi-Band Frequency Selective Surface

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Executive Summary

In this paper, the authors presents the effects of slots cut on the patches of a single substrate layer Frequency Selective Surface (FSS) in the aspect of multiband characteristics enabling applications in different fields like Wi-Fi, WiMAX, RADAR etc with reduced resonating frequency. Each FSS periodic cell consists of a metallic square patch loaded with two back to back slots of seven variable length strips. This designed FSS provides total seven reflection bands along with reduced patch size. The proposed design has been investigated both theoretically using ANSOFT software and practically. In comparison to the conventional square patch Frequency Selective Surface (FSS) without slot, this slotted square patch FSS can provide reduction in resonant frequency resulting in size reduction up to 94%.

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