SIW based Semi-Hexagonal Planar Array Antennas for 5.9 GHz Unlicensed Band

In this paper, a 2×2 semi-hexagonal planar array based on half-mode substrate integrated waveguide (HMSIW) has been designed at 5.9 GHz unlicensed band. A gain of 5.8 dBi is exhibited by the single element semi-hexagonal SIW antenna while a gain equal to 11 dBi is produced by the array antenna which reflects gain enhancement by 5.2 dBi. The simulated results obtained by the array antenna, designed using Arlon AD270 substrate are compared with the measured ones.