Diffraction of TE waves by a metallic cap located on a dielectric sphere: Ring source excitation outside the sphere

Yazıcı A., Serbest A., Büyükaksoy A.

WAVE MOTION, cilt.28, sa.3, ss.259-282, 1998 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 28 Sayı: 3
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1016/s0165-2125(98)00012-2
  • Dergi Adı: WAVE MOTION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.259-282
  • Çukurova Üniversitesi Adresli: Evet

Özet

Diffraction effects of a metallic cap located on a dielectric sphere on the propagation of high-frequency electromagnetic waves is investigated. The incident wave is supposed to be generated by a ring source located symmetrically with respect to the cap. Relying upon the locality principle of the GTD, the rigorous asymptotic solution is obtained by formulating the boundary-value problem in an abstract space in which the azimuth angle theta varies in the range theta is an element of (-infinity, infinity). The application of an integral transform with kernel Q(v-1/2)(-1)(cos theta), having similar analytical properties with Fourier integral transform, yields a scaler Hilbert problem which can be solved asymptotically for \kr\ much greater than 1 and then, edge and surface diffraction coefficients are obtained. (C) 1998 Elsevier science B.V. All rights reserved.