This paper outlines the design of microstrip patch antennas, which serve as two primary types of antennas intended for Cube Satellites (CubeSats). This research introduces a novel approach for small satellite antennas by combining slot antennas with solar cells on a single panel, thereby optimizing the limited surface area of small satellites and substituting deployed wire antennas for specific operational frequencies. Antennas designed for uplink and downlink communication were developed to operate at a resonant frequency of 2.5 GHz. A peak directivity of 4.73 dBi was attained with the proposed antenna. The design methodology involves utilizing the gaps between the solar cells to etch slots, which function as radiating elements.