In this study, cylindrical array of stripline fed rounded bow-tie slot antennas is designed to be used for avionics applications. The array element is fed by a T shaped strip line. Shape of the slot is modified from rectangular to rounded bow-tie to provide sufficient bandwidth for telemetry application. Furthermore, vias are placed around slots to prevent unwanted parallel plate modes of stripline structure. It is observed that, location of vias is critical in the design of the antenna. Thus, parametric studies are performed in order to determine the locations of vias. Designed antenna is fabricated and measured to validate the simulation results. Measurement and simulation results agree well with each other.