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      A modified equivalence principle for open surfaces

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      Author
      Takrimi, Manouchehr
      Gürel, Levent
      Date
      2014
      Source Title
      2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)
      Print ISSN
      1522-3965
      Publisher
      IEEE
      Pages
      129 - 130
      Language
      English
      Type
      Conference Paper
      Item 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 functions
      Computational field
      Equivalence principles
      Expansion coefficients
      Modified coefficient
      Open boundaries
      Surface current density
      Window functions
      Electromagnetic fields
      Permalink
      http://hdl.handle.net/11693/27856
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/APS.2014.6904396
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      • Computational Electromagnetics Research Center (BiLCEM) 85
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