A generic design approach for metasurfaces to manipulate surface waves

Abstract

Recently, there have been increasing interests in controlling and manipulating surface wave propagation based on metasufaces ranging from microwave to optical frequencies. Despite this, a general design tool, linking metasurfaces with classic EM theory of surface waves is missing. The aim of this paper is to present a novel analytical model, utilizing the Helmholtz equation and the circuit element theory, in order to fully characterize electromagnetic properties of arbitrary metasurfaces. To validate the proposed design approach, a metasurface structure for surface wave cloaking is presented, showing good performance in terms of wide bandwidth, polarization independence, and easy-to-fabricate.