Investigated gain and radiation pattern of array antenna with asymmetric y-shaped slit loads MSA

This paper presents a 1×4 asymmetric Y-shaped slit loaded microstrip array antenna. The antenna consists of a rectangular patch with four asymmetric Y-shaped slits at the patch corners and a double thickness of FR4 substrate. This antenna will be most utilized in WLAN applications. A modified array antenna configuration is proposed radiation pattern and gain characteristics to enhancement. The radiation patterns adjusting of antenna array are improved by array element spacing from λ/2 down to λ/3. In addition, position and size of slit loads on each of some patches in antenna array can adjust for good directive radiation pattern. The simulation results of the radiation pattern, reflection coefficient magnitude are verified by IE3D software. Result good agreement between our simulation and the measurement. Consequently, this proposed antenna array is appropriate for multiband wireless communications.