Design and Analysis of High Gain Linear Rectangular Microstrip Array Antenna at 20.2 GHz of Ka Band

Day by day user demand for high data transmission with uninterrupted service leads to usage of high frequency. To fulfill the demands ISRO launched GSAT-14 with two Ka-Band BECONS at 20.2 GHz and 30.5 GHz. Through this design and analysis of one, two (1 × 2), four (1 × 4) and eight (2 × 4) element linear rectangular shaped microstrip array antennae at a frequency of 20.2 GHz is done to attain high frequency access, high gain and directivity. The substrate material used is identical for the one, two (1 × 2), four (1 × 4) and eight (2 × 4) element i.e. “Rogers RT/Duroid 5880” with thickness and Relative permittivity of 0.254 mm and 2.2 mm is considered. The antenna elements placed linearly with equal distance and the feed network applied here is a corporate or parallel feed network. The RF Wilkinson power divider is used for impedance matching and to excite the number of elements (n) from a single source to drive all elements uniformly with loss less resistive network. The proposed array antennae are simulated using HFSS software and fabricated observations are analyzed.