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A new zero-index metasurface (ZIM) structure is proposed to improve the bandwidth and gain of the microstrip patch antenna. A single-sided 8 × 8 set of metasurface elements is embedded over the radiating patch to enhance the performance of a coaxial probe fed slotted circular patch antenna. The proposed ZIM cover-assimilated antenna were designed on a high permittivity (εr = 15) ceramic-filled bio-plastic...
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