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Diffraction and reflection of a plane electromagnetic wave in a right-angle corner with impedance walls
Osipov, Andrey and Senior, Thomas (2008) Diffraction and reflection of a plane electromagnetic wave in a right-angle corner with impedance walls. In: Proceedings of the 29th General Assembly of International Union of Radio Science (URSI). XXIXth URSI General Assembly, 2008-08-09 - 2008-08-16, Chicago, Illinois (USA).
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Official URL: http://ursi.org/
Abstract
We study the behavior of an electromagnetic field in a right-angle interior wedge-shaped region with impedance faces. This geometry is a useful model for a variety of applications in radar and wireless communication technologies. An exact solution of the general problem for an arbitrary-angle wedge with tensor impedance boundary conditions excited by an incident plane electromagnetic wave is specialized to the case of a 90° wedge with diagonal tensor impedances. We present explicit expressions for the geometrical optics portion of the field and show that they are continuous inside the region only if a compatibility condition on the face impedances is met. In general the geometrical optics fields are discontinuous at the direction of incidence and the edge-diffracted field gets excited in the region to make the total field continuous. Numerical results illustrate the edge-diffracted field as a function of observation angle for several impedance combinations, showing the overall increase as the impedance compatibility condition is increasingly not met.
| Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||
|---|---|---|---|---|---|---|---|
| Title: | Diffraction and reflection of a plane electromagnetic wave in a right-angle corner with impedance walls | ||||||
| Authors: |
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| Date: | 13 August 2008 | ||||||
| Journal or Publication Title: | Proceedings of the 29th General Assembly of International Union of Radio Science (URSI) | ||||||
| Status: | Published | ||||||
| Keywords: | anisotropic surfaces, diffraction coefficient, dihedral corner reflector, GTD/ UTD, wedge | ||||||
| Event Title: | XXIXth URSI General Assembly | ||||||
| Event Location: | Chicago, Illinois (USA) | ||||||
| Event Type: | international Conference | ||||||
| Event Dates: | 2008-08-09 - 2008-08-16 | ||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||
| HGF - Program: | Aeronautics | ||||||
| HGF - Program Themes: | L AR - Aircraft Research | ||||||
| DLR - Research area: | Aeronautics | ||||||
| DLR - Program: | L AR - Aircraft Research | ||||||
| DLR - Research theme (Project): | L - Military Technologies | ||||||
| Location: | Oberpfaffenhofen | ||||||
| Institutes and Institutions: | Microwaves and Radar Institute > Reconnaissance and Security | ||||||
| Deposited By: | Dr. Andrey Osipov | ||||||
| Deposited On: | 25 Aug 2008 | ||||||
| Last Modified: | 14 Jan 2010 23:57 |
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