Beam scanning of phased array antenna using phase modification method for satellite application

This paper presents the design of a 1×4 microstrip array antenna operating at 6.3GHz for C-band communication satellite application. The project aims to investigate the ability of the array to control the direction of the main lobe through a systematic least mean square method and to validate the design through accurate electromagnetic analysis. The array element consists of rectangular microstrip patch fed by inset feed. The single rectangular microstrip patch size and feed position is obtained by theoretical calculation, MATLAB and CST Studio software simulation. Based on the single element design, an array of four elements with equal sizes and spacing is designed. The desired beam direction is determined through passive feed control of the transmission line length to adjust the phase of the radiation pattern. A good performance antenna with 10.78dB gain and 42.46% efficiency is produced. A clear relation between phase coefficient and beam direction has been achieved.