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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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.
Item URL in elib: | https://elib.dlr.de/55033/ | ||||||||||||
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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) | ||||||||||||
Open Access: | No | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
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: | Aircraft Research (old) | ||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||
DLR - Program: | L AR - Aircraft Research | ||||||||||||
DLR - Research theme (Project): | L - Military Technologies (old) | ||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||
Institutes and Institutions: | Microwaves and Radar Institute > Reconnaissance and Security | ||||||||||||
Deposited By: | Osipov, Dr. Andrey | ||||||||||||
Deposited On: | 25 Aug 2008 | ||||||||||||
Last Modified: | 12 Dec 2013 20:32 |
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