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Abstract

In this paper, a dual-circularly polarized (DCP), metasurface-loaded broadband antenna is designed to operate across frequencies covering the Sub-6 GHz 5G band for RF energy harvesting (RFEH) applications. The DCP antenna can collect RF energy both left-hand circularly polarized (LHCP) and right-hand circularly polarized (RHCP) waves by the same antenna. In this view, the antenna structure features two crossed metallic strips enclosed within symmetrically loaded metallic rhombic loops. Unequal strip widths in the rhombic loops enhance gain and improve impedance matching. A partial ground plane on the bottom layer fine-tunes the operating frequency, while the metasurface boosts antenna gain. A prototype with optimized dimensions was fabricated, and the results, both experimental and simulated, demonstrated excellent agreement.

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Dr. Sanjay Kumar Sharma

Dr. Taimoor Khan

Dr. Hitendra Singh