Validation of Higher-Order Approximations and Boundary Conditions for Lossy Conducting Bodies

Creative Commons License

Sukharevsky I. O., ALTINTAŞ A.

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, cilt.62, sa.9, ss.4656-4663, 2014 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 62 Sayı: 9
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1109/tap.2014.2331991
  • Dergi Adı: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.4656-4663
  • Abdullah Gül Üniversitesi Adresli: Hayır

Özet

The problem of high-frequency diffraction by a smooth lossy body with high conductivity is considered. In addition to the geometrical optics approximation, additional asymptotic terms are derived to take into account the curvature of the boundary and material properties. Since these higher-order terms are derived by taking into account exact boundary conditions, it is easy to learn about the limitations of impedance conditions and to determine more accurate approximate conditions. The obtained higher-order boundary conditions and their limitations are numerically validated by solving Muller's second-kind integral equations.