Surface impedance for electromagnetic fields over a dielectric-coated circular cylinder

摘要

For small or medium size conformal array antennas in termsudof the wave length, modal solutions in spectral domain forudmutual coupling analysis are convenient for canonical shapesudsuch as circular cylinder [1] or sphere [2], but as the antenna dimensions increase a large number of terms are necessary.udFor large structures the uniform theory of diffraction (UTD)udis commonly used to solve this problem for canonical andudarbitrarily convex shaped perfect electric conductor (PEC)udsurfaces [3]. A UTD solution for mutual coupling on anudimpedance cylinder has been introduced in [4], [5] but usinguda constant surface impedance.