Shared-Aperture Antenna Systems for 5G Applications

The need for multi-function, multi-standard antenna systems for modern wireless applications and terminals have been growing with the evolution of wireless communications. Nowadays, there is a need for multi-band, and multi-function antennas to support the various allocated bands and standards all around the world. Various techniques have been adopted for multi-band operation. The concept of shared aperture antenna systems has started to gain more attention due to the stringent space requirements and demand for higher integration. The challenge is in design of widely separated frequency bands (i.e. sub-6 GHz and mm-waves). In this work, we provide an overview of the latest works in shared aperture (SA) antenna systems for mobile terminals, and present two interesting design ideas applied to metallic based and dielectric based antenna systems.