Extension of PTD for Finite Objects With Rounded Edges: Diffraction at a Soft Trilateral Cylinder
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Date
2017
Authors
Apaydin, Gokhan
Sevgi, Levent
Ufimtsev, Pyotr Ya
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Publisher
Ieee-inst Electrical Electronics Engineers inc
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Abstract
The letter extends the physical theory of diffraction (PTD) for objects with rounded edges. It represents a combination of the fundamental PTD concept of fringe currents and the method of moments (MoM). The objects in the vicinity of edges are considered as parts of appropriate tangential wedges. Integral equations are formulated for fringe currents on these wedges and solved by the MoM. Then, a far field radiated by these currents is calculated. A very good agreement is observed with the field produced by the currents induced on the actual scattering object when its size exceeds a few wavelengths.
Description
Apaydin, Gokhan/0000-0001-8028-0353;
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Keywords
Diffraction, fringe waves, method of moments (MoM), physical optics (PO), physical theory of diffraction (PTD), polygonal cylinders, rounded wedge, scattering cross section, scattered far field, soft boundary condition
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Fields of Science
Citation
5
WoS Q
Q2
Scopus Q
Q1
Source
Volume
16
Issue
Start Page
2590
End Page
2593