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      • Department of Electrical and Electronics Engineering
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      Efficient computation of surface fields excited on a dielectric-coated circular cylinder

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      Author(s)
      Erturk, V. B.
      Rojas, R. G.
      Date
      2000-10
      Source Title
      IEEE Transactions on Antennas and Propagation
      Print ISSN
      0018-926X
      Publisher
      IEEE
      Volume
      48
      Issue
      10
      Pages
      1507 - 1516
      Language
      English
      Type
      Article
      Item Usage Stats
      185
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      202
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      Abstract
      An efficient method to evaluate the surface fields excited on an electrically large dielectric-coated circular cylinder is presented. The efficiency of the method results from the circumferentially propagating representation of the Green’s function as well as its efficient numerical evaluation along a steepest descent path. The circumferentially propagating series representation of the appropriate Green’s function is obtained from its radially propagating counterpart via Watson’s transformation and then the path of integration is deformed to the steepest descent path on which the integrand decays most rapidly. Numerical results are presented that indicate that the representations obtained here are very efficient and valid even for arbitrary small separations of the source and field points. This work is especially useful in the moment-method analysis of conformal microstrip antennas where the mutual coupling effects are important.
      Keywords
      Conformal Antennas
      Electromagnetic coupling
      Green function
      Microstrip arrays
      Antenna arrays
      Circular waveguides
      Computational methods
      Dielectric waveguides
      Electromagnetic wave propagation
      Green's function
      Integration
      Mathematical transformations
      Method of moments
      Microstrip antennas
      Conformal antennas
      Electromagnetic coupling
      Microstrip arrays
      Surface fields
      Watsons transformation
      Electromagnetic fields
      Permalink
      http://hdl.handle.net/11693/13506
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/8.899666
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      • Department of Electrical and Electronics Engineering 4011
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