The paper presents a stub microstrip patch antenna for sub 6 GHz, that is used in 5G applications. The background of each part of the theory and the rules of the design of the antenna are described. 5G technology and its advantages are mentioned in this paper. Also, the reason why the microstrip patch antenna is used in this project, and what effect it has on the results, is described. The physical structure can be different, and it can behave differently. This paper uses a rectangular shape. The antenna also has tunning stub, and slits and slots, which are discussed in the paper. The antenna is simulated and analyzed, using Sonnet Suites Software [1]. The changes that were analyzed are geometry, dielectric thickness, and dielectric constant. The substrate that is used for designing the antenna is an FR-4. The antenna operates at 5.5 GHz with S11 of -12.605 dB, E-Theta of 4.646 dB, and E-Phi of -7.508 dB. These values are suitable for 5G applications.

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