Full-wave EM modeling in tilted cylindrically-layered media

We propose a Transformation Optics-based (T.O) methodology to rigorously (full-wave) model interactions of electromagnetic (EM) waves with tilted cylindrical interfaces, i.e., where the (locally) cylindrical interfaces exhibit tiltin relative to each other. Antennas radiating in such tilted-layer environments arise (for example) in geophysical prospection scenarios characterized by relative deviation between the exploration borehole and invastion zone. We introduce flexibly-defined, T.O.-based annular slabs coating each vertically-oriented interface so that the fields interact with the interfaces as if the latter were in fact tilted, while satisfying the appropriate boundary conditions. Numerical results illustrate teh proposed modeling method, assessing the perturbation on the EM fields versus the relative interface tilting angle.