Zero Index Metamaterial for Designing  High-Gain Patch Antenna

<table>The performance of the proposed wideband antenna with the ZIM cover for different distances <svg height="12.4375" id="M54" style="vertical-align:-0.1254pt" version="1.1" viewbox="0 0 8.8999996 12.4375" width="8.8999996" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>, (a) the reflection coefficients and (b) the antenna gains.</table>

International Journal of Antennas and Propagation

Zero Index Metamaterial for Designing High-Gain Patch Antenna

Figure 6