An Ultrawideband (35:1) Shared-Aperture Antenna Array With Multihyperuniform Disorder

This article is aimed at studying the concept of multihyperuniformity and applying it to the design of shared-aperture antenna arrays for ultrawideband, broadside unidirectional emission. In this study, we present our work on the design of multiple frequency helical antenna arrays within a shared-aperture configuration, incorporating multihyperuniform disorder. The array consists of seven different intercalated helical subarrays and is optimized to cover a 35:1 continuous bandwidth at 0.4–14 GHz. We provide comprehensive details regarding the fabrication process and present measurement results. Our work provides a new alternative to existing solutions of antenna array designs and has wider applicability in electromagnetics. The proposed methodology extends the limitations for the realization of multiband antenna arrays, surpassing the previously reported designs that operated in a maximum of three frequency bands, by incorporating naturally optimized disordered distributions.