Dual-Polarized Microstrip-Fed Slot Antenna Design with Dual-Notch Filtering for Ultra-Wideband Communications

This study aims to discuss the characteristics of a dual-port/dual-polarized MIMO slot antenna system with dual-band filtering for ultra-wideband (UWB) wireless communications. The proposed design configuration consists of a pair of modified arc-shaped radiation stubs with a shared ground plane in a planar form. The stubs also contain open-ended rectangular slots and W-shaped. The suggested design ground plane contains an open-ended circular slot. The results indicate that the antenna operates at frequencies 3-10.7 GHz, fully covering the UWB spectrum. Additionally, two notched-band filtering characteristics have been achieved at 5.5 and 7.5 GHz to fully suppress the interfaces from other wireless systems such as the WLAN, and X-band satellite communication downlink. Fundamental characteristics of the proposed design are evaluated. It has been determined that sufficient scattering parameters, 3D radiations, efficiency, and gain levels are all achievable with the presented UWB antenna design. The introduced antenna system meets the requirements well for MIMO and diversity applications.