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Fig. 5 | eLight

Fig. 5

From: High-permittivity ceramics enabled highly homogeneous zero-index metamaterials for high-directivity antennas and beyond

Fig. 5

Electric field phase distributions and far-field radiation patterns of a patch antenna, a zero-index medium-based antenna, and a DCZIM-based antenna. a The nonuniform spatial phase distribution over the patch antenna results in a low directivity. b, c The uniform spatial phase distributions over the zero-index medium and DCZIM lead to high directivities

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