Arrowhead patch slot antenna for 5G applications

Abstract

With the rapid development of 5th generation mobile network (5G), the need to integrate multiple frequency bands and multiple wireless standards into 5G systems is growing. The antenna is an essential part of the system to ensure communication quality. Therefore, research on antennas and arrays suitable for the 5G frequency bands is of great significance for future wireless communication systems. This thesis reviews recent antenna designs related to 5G systems, especially those based on coplanar waveguide feeding method. Then antenna based on coplanar waveguide feed structure is designed and optimized for better input impedance match and radiation performance. Measurements of the fabricated prototype confirmed the targeted operating frequencies. Furthermore, antenna array configurations are designed and optimized for 5G base stations or terminals. The scanning feature of the antenna array configurations (5 and 15 antenna elements) are investigated for operation in two segments of the licensed lower 5G frequency band (3.55-3.7GHz and 3.7-4.2GHz). Finally, a cavity is further suggested to be added to the bottom of the antenna element to focus the radiated field mainly in one half space and to be used in the array configurations.