Design of High Gain and Broadband Printed Strip Dipole Antenna for the Up Coming 5G Millimeter Wave Communication System

Abstract

In this paper a broadband end-fire printed strip dipoles antenna that is suitable for 5G millimeter-wave applications is presented. The antenna consists of several parallel strip dipoles of different lengths. Using more than one strip dipole helps in providing the broadband characteristics. To realize a wide frequency band of operation, the antenna is fed from 50 Ō coaxial connector through a matching stub of different widths. A truncated ground plane is used as a reflector to achieve high front-to-back (F/B) gain ratio. Design and analysis of the antenna were performed using electromagnetic simulations, to validate the performance of the antenna. The antenna provides end-fire radiation pattern with high gain, low cross polarization level and wide beam width. The single element antenna yields a |S11| <-10-dB bandwidth of 60.3% (23.4-43.5 GHz) and a gain of 7.64 -10.4 dBi. A low mutual coupling of < -20 dB for a 5.5-mm center-to-center spacing 0.58λ at 32 GHz. The simulation results show that the antenna with the merits of average gain of 9 dBi, stable radiation patterns, low cross polarization, and low back lobes, is exhibiting potentially use for the applications of 5G wireless communication systems.