A modified equivalence principle for open surfaces
Author
Takrimi, Manouchehr
Gürel, Levent
Date
2014Source Title
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)
Print ISSN
1522-3965
Publisher
IEEE
Pages
129 - 130
Language
English
Type
Conference PaperItem Usage Stats
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Abstract
We introduce a new method for expanding equivalent surface current densities over open surfaces. The new method is based on the equivalence principle, which is theoretically used with closed surfaces. Utilizing low-order basis functions to compute the expansion coefficients of equivalent surface currents and then weighting these coefficients with an appropriate window function compensates for computational field errors originating from using truncated currents at the open boundaries. These modified coefficients can be used to reproduce the original electromagnetic fields inside a limited equivalent region. The simulations demonstrate that relative errors as low as 1-2.5% are achievable based on the specifics of the source and shape of the open surface. © 2014 IEEE.
Keywords
Basis functionsComputational field
Equivalence principles
Expansion coefficients
Modified coefficient
Open boundaries
Surface current density
Window functions
Electromagnetic fields