RADIATION OF A DIPOLE LOCATED ON AXIS OF A SEMITRANSPARENT DISK
Vadim A. Kaloshin 1, Kirill K. Klionovski 2
1 Kotelnikov Institute of
Radioengineering and Electronics of RAS
2 JSC «Concern
«Morinformsystem-Agat»»
The paper is received on May 20, 2014
Abstract. Asymptotic formulas for scattering
fields of arbitrarily oriented magnetic and electric dipoles located on axis of
a semitransparent disk were obtained using the Kirchhoff approximation and the
stationary phase method. Expressions for the front-to-back ratio of magnetic
and electric dipoles oriented parallel to the disk were obtained. Optimization
of the disk’s transparency was performed to reduce the back radiation of a
magnetic dipole oriented parallel to the disk. Radiation patterns were calculated
using the asymptotic formulas and a numerical solution of a singular integral
equation.
Keywords: semitransparent disk,
spherical wave, electric and magnetic dipole, Kirchhoff approximation,
stationary phase method.