Abstract—For existing and upcoming satellite communications applications on a variety of platforms, including cars, fishing boats, ships, aircraft, and submarines, wide-band antenna technology is currently crucial. These days, platforms are utilized for a variety of tasks, including geographic scanning, mining, depth detection, underwater scanning, and looking for other items like ships, mountains, and erratic geographic areas. It takes effective wide-band antenna technology to carry out such tasks on a variety of platforms. As a wide-band antenna for S-band and C-band satellite communications, a new design of rectangular dual patch antennas with a resistive loading approach has been put forth in this work. The antenna may be made small and compact for high-speed data, voice, and video broadcasts through satellites because it operates in the S-band and Cband frequencies. The simulation results were generated using Computer Simulation Technology Studio software, and analyzed for four important parameters like axial ratio, 3 dB beam width, gain, and Voltage Standing Wave Ratio (VSWR). A broader bandwidth has been attained with the newly developed rectangular twin patch antenna employing a resistive loading method. Finally, it is demonstrated that the recommended rectangular twin patch antenna with resistive loading performs better for both S-band and Cband satellite communication applications.