Investigations on the design of novel filtering antennas for 5g communications

Abstract

Filtering monopole plays a decisive role in 5G communication newlinewireless systems. Most importantly, a noise-free transmission system with newlineimproved stopband performance is of prime importance. This can be achieved newlineby performing filtering within the antenna system. Filtering in the antenna is a newlinecrucial part as it combines both the linear and non-linear components in the newlinecommunication channel. It can be incorporated by following any of the three newlinemethods. One is to design a conventional filter such as low pass, high pass, newlineband pass, and band stop filters separately and integrate it with the antenna newlinecircuit. The other is to encompass filtering structures in the antenna circuit newlineeither in the feed or in the patch or in the ground plane. The third one is the newlinecombination of the first and the second technique. However, most of these newlinetechniques result in structural complexity, high transmission loss, coupling newlineinefficiency, and poor radiation performance. To overcome this, three design newlinestrategies of the filtering monopole designs are proposed and its Multiple Input newlineand Multiple Output (MIMO) features are analyzed. All three strategies follow newlinethe same procedures in designing the filtering monopole i.e., designing the newlineUltra-Wideband (UWB) monopole, filter structure, and finally integration of newlinemonopole and filter. However, the methodology, attainment of results, and newlineanalysis are different. newlineThe first work aims to design a compact filtering monopole that newlineoperates in the frequency band of 2.2 GHz to 3 GHz for 5G mobile newlinecommunications. A conventional coplanar waveguide (CPW) fed circular newlinemonopole is designed and modified by truncating the lateral edges of the patch newlineresulting in the Truncated Circular Monopole (TCM). The defected CPW newlineground plane helps the antenna to operate in UWB mode from 2.6 GHz to 16 newlineGHz. newline