High-Directivity Antenna Array Based on Artificial Electromagnetic Metamaterials with Low Refractive Index

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/ijap/volume-2015/294598/figures/294598.fig.004a.svgz" name="294598.fig.004a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Conventional four-element antenna array</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/ijap/volume-2015/294598/figures/294598.fig.004b.svgz" name="294598.fig.004b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Four-element antenna array integrated with MTMs-cover</td></tr></table>

<div>Three-dimensional radiation patterns of MTMs-cover array and the conventional type: (a) conventional 2 × 2 element antenna array; (b) 2 × 2 element antenna array with MTMs-cover.</div>

International Journal of Antennas and Propagation

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Figure 4

Figure 4: High-Directivity Antenna Array Based on Artificial Electromagnetic Metamaterials with Low Refractive Index 