The auxiliary source method and its application to the reflection problem at an interface with tilted wires

Reflection at an interface of air and a spatially dispersive medium is considered. It is shown that it is possible to construct an equivalent source-driven problem dealing only with an unbounded medium from which the half-space reflection can be found. The developed method is applied to the case of an interface with tilted wires and is found to be in perfect agreement with the approaches based on additional boundary conditions.