$2\times 2$ Hexagonal-Shaped Antenna Array for 5.8 GHz ISM Band Applications

A
$2\times 2$
hexagonal-shaped patch antenna array with the dimension of
$49.47\times 47.94\ \text{mm}^{2}$
is printed on an economical FR4 substrate with a relative permittivity of 4.4 and a peak gain of 7.78 dB. The proposed antenna operated on a frequency of 5.8 that is used for Industrial Scientific Medical (ISM) applications, a wireless Local Area Network (LAN) application. The
$2\times 2$
hexagonal-shaped microstrip patch antenna is more efficient than a rectangular and circular shaped antenna in terms of the required parameters such as gain, directivity, bandwidth, etc.