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Continue to ChatWide-band gain enhancement of a pyramidal horn antenna with a 3D-printed epsilon-positive and epsilon-near-zero metamaterial lens - https://avesis.yildiz.edu.tr/yayin/43fee9ef-8693-4789-8f04-fad4a74176e2/wide-band-gain-enhancement-of-a-pyramidal-horn-antenna-with-a-3d-printed-epsilon-positive-and-epsilon-near-zero-metamaterial-lens