• DocumentCode
    67378
  • Title

    Analysis of Finite Conformal Frequency Selective Surfaces via the Characteristic Basis Function Method and Spectral Rotation Approaches

  • Author

    Pelletti, Chiara ; Bianconi, Giacomo ; Mittra, Raj ; Monorchio, Agostino

  • Author_Institution
    Electromagn. Commun. Labs., Pennsylvania State Univ., University Park, PA, USA
  • Volume
    12
  • fYear
    2013
  • fDate
    2013
  • Firstpage
    1404
  • Lastpage
    1407
  • Abstract
    An efficient characteristic basis function (CBF)-based method is proposed to analyze conformal frequency selective surfaces (FSS) that are not amenable to analysis by using conventional numerical methods typically used to model infinite, planar, and doubly periodic FSSs. The technique begins by employing the CBFs to describe the currents induced on the elements. The reaction integrals needed to derive the reduced matrix elements are computed either in the spatial domain, or spectral domain, depending on the separation distance between the blocks, so as to make the process numerically efficient. The spectral domain integrals are evaluated by making use of the spectral rotation (SR) on the spectra of the CBFs to alleviate the computational burden to be associated with full three-dimensional (3-D) Fourier transform, which is required in the conventional spectral domain approach applied to nonplanar geometries. Numerical results from the new method have good agreement with the fully spatial characteristic basis function method (CBFM) and the conventional method of moments (MoM). However, the required central processing unit (CPU) time is greatly reduced.
  • Keywords
    frequency selective surfaces; matrix algebra; method of moments; CPU; central processing unit; characteristic basis function method; finite conformal frequency selective surfaces; matrix elements; method of moments; numerical methods; spatial domain; spectral domain; spectral rotation; three-dimensional Fourier transform; Frequency selective surfaces; Geometry; Mathematical model; Method of moments; Spectral analysis; Transmission line matrix methods; Characteristic basis function method (CBFM); method of moments (MoM); spectral domain analysis; spectral rotation (SR);
  • fLanguage
    English
  • Journal_Title
    Antennas and Wireless Propagation Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1536-1225
  • Type

    jour

  • DOI
    10.1109/LAWP.2013.2287377
  • Filename
    6648372