Numerical assessment of high-frequency mutual coupling between sources on convex surfaces with variable curvatures

Analysis of mutual coupling between slots on variable curvatures is analyzed via use of high-frequency asymptotic methods and the full-wave numerical solver FEKO. Results for isolation parameter, S₁₂, between two axial slots on a circular cone, obtained via FEKO and measurements, are included here. Excellent agreement between FEKO simulations and measurements suggest that the accuracy of the high-frequency asymptotic formulations can be assessed with confidence against the results from the full wave solver for convex surfaces with variable curvatures.