Abstract:
A number of diffraction problems having a practical application in science and
engineering can be solved throughWiener-Hopf and Mode Matching techniques.
Whilst using these techniques, this dissertation addresses a class of boundaryvalue
problems related to the effect of cold plasma and wave scattering. These
problems find applications in a broad area of physics and engineering. The envisaged
mathematical model is governed by the Helmholtz equation in cold plasma
along with soft, hard and impedance boundary conditions. The diffracted, scattered,
transmitted and radiated fields are obtained for waveguide structures located
in cold plasma. The numerical analysis is made in its factual perspective by
using different material properties of the waveguide. It is revealed that the amplitude
of obtained field is affected drastically in the presence of an ionosphere
plasma medium. Likewise it is observed that the field showed impedance dependent
variations that are actually related to the magnetic and electric susceptibilities
of the waveguide surfaces. We conclude that such types of results can be
used to improve the radiated signal quality transmitted by an artificial satellite
in the ionosphere.
