Infinite current behavior along a subwavelength perfectly conducting concaved wedge

摘要

Equivalent surface currents are known to grow to infinity close to a sharp edge. In the Method of Moments, the linear or higher order basis functions representing those currents are always finite. Special basis functions have been derived, that allow infinite currents on sharp edges, but their efficient use requires to know the exact analytical behavior. In this paper we derive this exact behavior for a perfectly conducting subwavelength concaved wedge.