Abstract—These paper presents a new 3X3 array design
using a microstrip patch array antenna to operate at
2.45GHz. The aim of this antenna array construction is to
obtain high directivity. The element of the array is
microstrip square patch antenna using V-shaped
symmetric-slit along with rectangular slot in diagonal
direction at the centre of square patch radiator to achieve
the circularly polarized radiation and each element is fed by
inset feed. The size and feed position of the single microstrip
square patch is determined through the theoretical design
and CST microwave studio software simulation. Based on
which an array of six elements with equal sizes and equal
spacing is designed on a planar substrate. The simulation
results in this paper can be used as design reference for the
practical design of the rectenna.