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Equivalent Edge Currents by the Modified Edge Representation: Physical Optics Components
Tsutomu MURASAKI Makoto ANDO
IEICE TRANSACTIONS on Electronics
Publication Date: 1992/05/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electromagnetic Theory
PO, GTD, PTD, MEC,
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The method of equivalent edge currents (MEC) has some ambiguity about definition of edge currents at general edge points except for diffraction points. The modified edge representation is introduced to overcome this ambiguity. The modified edge is the fictitious one which is defined so as to satisfy the diffraction law for given directions of incidence and observation. The equivalent edge currents for physical optics (PO) components at general edge points are obtained by utilizing these fictitious edges and the classical Keller's diffraction coefficients. High potentials of these currents are numerically demonstrated for diffraction from a disk, a square plate and a parabolic reflector.