Search results

Sort By:

Limit search:

Scattering of an arbitrarily oriented dipole field by an infinite and a finite length PEMC circular cylinder

100%

Illahi A., Naqvi Q.

Open Physics

2009

vol. 7

issue 4

829-853

Electromagnetic scattering from an infinite and a finite length PEMC circular cylinder, illuminated by an arbitrarily oriented dipole, is investigated theoretically. An electric dipole as a source of excitation is considered first, and then a magnetic dipole as a source of excitation is treated. In contrast to the case of an axially directed dipole, it is shown that no additional terms are needed to incorporate the cross-polarized component of the field for the case of radial and circumferential dipoles. Numerical verifications are presented to verify the validity of derived results and numerical code by comparing results with the published literature.

Focusing of an electromagnetic plane wave into a uniaxial crystal by a Wood lens

100%

Ghaffar A., Naqvi Q.

Open Physics

2009

vol. 7

issue 1

41-49

High frequency fields, refracted by a geometry containing a Wood lens placed at a certain distance from a planar uniaxial interface, are derived by using Maslov’s method. The geometrical optics approximation generally valid for high frequency fields fails in the vicinity of a caustic. Maslov’s method is a systematic procedure for predicting the field in the caustic region, combining the simplicity of the ray and the generality of the transform method. Numerical computations are made for the field pattern around the caustic by using Maslov’s method. The results are found to be in good agreement with those obtained using Kirchhoff’s approximation.

Refine search results

2 Open Physics

2 2009

2 Naqvi Q.

1 Ghaffar A.

1 Illahi A.

Search results

Scattering of an arbitrarily oriented dipole field by an infinite and a finite length PEMC circular cylinder

Focusing of an electromagnetic plane wave into a uniaxial crystal by a Wood lens