Mohammad Vahidpour

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The finite difference time domain (FDTD) method has been applied to the analysis of abruptly-ended dielectric waveguides. In these waveguides, the incident propagating wave undergoes reflection in an interaction with the end-facet. As a result of the discontinuity, all possible propagating modes may be excited. The constituent propagating modes are(More)
A plane-wave expansion method is used to analyze the interaction of nonuniform electromagnetic waves with a metamaterial slab. A network of transmission lines models the propagation of the constituting plane-wave components of the incident and diffracted beams. Having determined the complex amplitude of these components, one can obtain the total solution(More)
With recent developments in communication technologies, it is possible to access information any time and in any place; however, mobile environments bring forward certain requirements and exclusive challenges including low connection speeds and bandwidth limitations. Thus, we need to consider mobile limitations when using web services. Providing services(More)
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