Characterization of m × n Metasurface for Bandwidth Extension of Patch Antennas

Patch antennas have been drawn rich attention in wireless system because of their low-profile structure, low cost and ease of manufacture. This paper discusses characterization of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathrm{m} \times \mathrm{n}$</tex> meta surface for patch antenna in terms of bandwidth enhancement. To clarify the principle of operation of the periodic part, we focused on magnetic currents. As a result, it is found that at the design frequency of the periodic structure, both the patch and the periodic structure radiate. It was also found that the effect of elements not adjacent to the driving element was greater, radiating out-of-phase components.