A Physically Realizable Metasurface Incorporating Auxiliary Surface Waves for Power Redistribution

The allowable electromagnetic wave transformations supported by lossless and passive metasurfaces are typically constrained by the enforcement of local power conservation (LPC) at each of the metasurface unit-cells. Incorporating auxiliary surface waves tangential to the metasurface in the design procedure provides a means for power redistribution along the metasurface, thus permitting a wider variety of possible field transformations. This paper utilizes a previously developed integral-equation-based solver to incorporate such auxiliary surface waves into the design of omega-bianisotropic Huygens' metasurfaces. Subsequently, a physically realizable metasurface that utilizes such auxiliary surfaces waves is designed and simulated to verify the performance of this solver. The proposed design includes a three-layer copper trace design supported by practical dielectric substrates and bondply.