This thesis studies the design and implementation of a microstrip antenna for fifth-generation applications. Our antenna can operate on a medium frequency band of 3.5 GHz. This thesis consists of five (5) sections. In the first section, we study the concept of microstrip antennas and feeding methods. We highlighted the importance of resonant frequency 3.5 GHz emphasis on the reason why we choose this area for our dissertation thesis. In the second section, some concepts, definitions, and parameters of the antennas. In the third section, was introduced the interface of HFSS simulation program. In the fourth and fifth sections, the design process started by studying the mathematical equations that is used to calculate the appropriate dimensions as required for the antenna to operate at the required frequency 3.5 GHz, and to obtain an input resistance of 50 Ohm, etc. After calculating the dimensions theoretically, this antenna was simulated by HFSS for Finding the initial results. After many optimizations for different dimensions, the desired results were achieved, for manufacturing. We had been looking for companies that have printers for this type of antenna and really the antenna was manufactured with the help of a 3D printer. The most important parameters were checked and thus the expected results were achieved.