Holographic metasurfaces simulations applied to realization of non-diffracting waves in the microwave regime

TL;DR

This paper demonstrates the computational design of holographic metasurfaces capable of generating non-diffracting microwave waves, aligning with theoretical predictions and enabling potential applications in telecommunications and bioengineering.

Contribution

It introduces a novel method for designing holographic metasurfaces that produce non-diffracting waves in the microwave regime using surface impedance control.

Findings

Successful simulation of non-diffracting waves with holographic metasurfaces

Alignment of results with theoretical non-diffracting wave predictions

Potential applications in telecommunications and bioengineering

Abstract

In this work, we present the computational realization of holographic metasurfaces to generation of the non-diffracting waves. These holographic metasurfaces (HMS) are simulated by modeling a periodic lattice of metallic patches on dielectric substrates with sub-wavelength dimensions, where each one of those unit cells alter the phase of the incoming wave. We use the surface impedance (Z) to control the phase of the electromagnetic wave through the metasurface in each unit cell. The sub-wavelength dimensions guarantees that the effective medium theory is fulfilled. The metasurfaces are designed by the holographic technique and the computer-generated holograms (CGHs) of non-diffracting waves are generated and reproduced using such HMS in the microwave regime. The results is according to the theoretically predicted by non-diffracting wave theory. These results are important given the possibilities of applications of these types of electromagnetic waves in several areas of telecommunications and bioengineering.