Abstract
This paper summarizes and synthetically evaluates a method proposed for
metasurface design. The method takes as input a set of desired far-field
(FF) performance specifications and produces an effective susceptibility
distribution that, when illuminated with a known incident field,
produces a FF radiation pattern exhibiting the desired specifications.
To this end, electromagnetic inversion (inverse source) is used to solve
for the desired tangential fields on the output side of the metasurface.
A finite-difference frequency-domain solver, recently developed for
simulation of metasurfaces, is used to synthetically evaluate the
proposed method using a two-dimensional (2D) example. It should be noted
that microscopic metasurface design (i.e., the design of the physical
metasurface implementation) is beyond the scope of this paper.