Multifunctional cascaded metasurfaces

In this talk, design and realization of a single-layer meta-transmitarray which provides a certain functionality in a narrow frequency band while remains reflectionless (transparent) elsewhere is presented. Realization of such transmitarrays would allow integrating several metasurfaces in a cascade that performs different functionalities at different frequencies, opening a door for various new applications. We provide a theoretical analysis for alternative possible ways to realize such transmitarrays. Moreover, in the presentation we will show results for fabricated structures as well as a cascade consisting of three independent metasurfaces for general control over reflection, transmission and absorption.