Title :
Time-domain analysis of the Sommerfeld VMD problem based on the exact image theory
Author :
Nikoskinen, Keijo I. ; Lindell, Ismo V.
Author_Institution :
Electromagn. Lab., Helsinki Univ. of Technol., Espoo, Finland
fDate :
2/1/1990 12:00:00 AM
Abstract :
A novel time-domain solution of the Sommerfeld half-space problem is constructed through the exact image theory. The radiation from a vertical magnetic dipole (VMD) above the planar interface of two lossless and dispersionless dielectric media is analyzed. The reflection field is given as a Laplace transform when the refraction index of the lower medium is greater. The converse case of refraction indexes is also studied, and the reflection field is written as originating from an image source located in homogeneous space. The present theory is seen to lead to a numerically efficient result, which is demonstrated with examples
Keywords :
Laplace transforms; electromagnetic field theory; electromagnetic wave reflection; refractive index; time-domain analysis; EM wave radiation; Laplace transform; Sommerfeld half-space problem; converse case; dispersionless dielectric media; exact image theory; homogeneous space; image source; lossless dielectric media; lower medium refraction index; planar interface; reflection field; time-domain solution; vertical magnetic dipole; Computational geometry; Dielectric losses; Diffraction; Image converters; Laplace equations; Magnetic analysis; Permittivity; Reflection; Time domain analysis; Tomography;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
