Abstract—The design of a high Gain microstrip patch antenna
array using microstrip line feed is presented in this paper. The
design has been done for C band application at 5.81GHz for
Rainfall RADAR also called as Precipitation Occurrence Sensor
System (POSS). Array consisting of 16 elements of 4x4 were
designed and simulated using HFSS v13 on Taconic TLY
substrate of dielectric constant 2.2 and height of substrate equal
to 1.58mm. For the proposed antenna, the achieved gain is
19.5dBi, return loss is ≤ 30dB, 3dB bandwidth of 170MHz with
low side lobes and back lobe. The Array antenna was excited by
uniform amplitude and phase feeding method. A comparative
analysis was done between 1x2, 2x2 and 4x4 array. It was found
that gain increases at cost of bandwidth.