This work presents the design and simulation of a microstrip single patch element and two distinct array antenna configurations intended for Ku-band applications, specifically operating at a frequency of 17.16 GHz. The antennas are designed using an FR-4 substrate material with a dielectric constant of 4.3 and a substrate height of 13 mm. Two different two-element array configurations are developed to evaluate the impact of array geometry on antenna performance. The designs are modeled and simulated using CST Microwave Studio. The simulation results demonstrate that both directivity and gain improve significantly as the number of patch elements increases in the array structure. Comparative analysis between the single-element and array configurations reveals that array antennas offer enhanced radiation characteristics, making them more suitable for high-frequency satellite communication systems. This study highlights the importance of array design in achieving better antenna performance, especially in applications requiring high gain and narrow beamwidth.