Application of fresnel zone numbers localization for equivalent edge currents line integration

Equivalent edge currents (EECs) for high frequency diffraction analysis are the intermediate concepts between Ray theory and Wave optics (Physical optics). EEC eliminates the caustic singularities of the ray theory at the cost of additional line integration. The high frequency localization by using the Fresnel zone numbers in stead of the stationary phase method could be applied to EEC and the uniform convergence to Ray theory is expected. Modified Edge Representation (MER) as one of the concepts for complete definition of EEC is jointly used to demonstrate the recovery of uniform type of GTD from Keller-type EEC. The RB/SB singularities and the ambiguity of current definition are removed. The dipole wave scattering from a rectangular and circular plate will be demonstrated in the talk.