Multiband array antenna design techniques in millimeter wave for 5g applications

Abstract

The objective of this research work is to design an antenna for 5G applications supporting several wireless devices with improved efficiency, reduced size and larger impedance bandwidth to meet present and future wireless demands. Microstrip Patch Antennas (MPA s) find widespread applications in many contemporary wireless communication devices, on account of their low profile structure, robustness and ease of fabrication on a Printed Circuit Board (PCB) substrate. But contemporary wireless systems require integration of transceivers for multiple wireless standards such as 2G, 3G, 4G, 5G, WiFi, Wimax, Bluetooth, etc., in a single computing device. This scenario has created a demand for wideband and multiband antennas for multistandard wireless systems. The standard wireless bodies have not yet defined the frequency bands needed for meeting 5G performance requirement. Some of the possible centre frequency bands which support 5G within the mm wave band are 3.3 - 3.6 GHz, 7.7 - 8.5 GHz, 9.75 10 GHz, 24.25 27.5 GHz, 27.5 - 29.5 GHz and 37.0 43.5 GHz under the sub band of 3 50 GHz. Mm wave frequencies are affected by Absorption loss and Atmospheric loss. The 28 GHz and 38 GHz are the currently available spectrum allocations over the 1 GHz of bandwidth with smaller Absorption, Atmospheric loss. In this research work, Series Feed, Corporate Feed, Unique Linear and Non-Linear Array Techniques, Phased Array and Dielectric Resonators have been used in the design of antennas in the above mentioned possible range of 5G frequencies. newline