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Electromagnetic scattering of a point electric current source radiating in the vicinity of a PEC wedge which resides in lossy medium is studied. Dyadic Green's functions for longitudinal components are derived and paraxial field representations are obtained. At the end of the analysis, asymptotic forms of the dyadic Green's functions are presented.
We present an approximation formula and numerical results for the excess attenuation of electric field of a wave propagating within deciduous forest. The formula is tuned to fit averaged attenuation obtained by full-wave simulations of stochastic 3D and 2D models of forests. The electric field was either vertically or horizontally polarized, at frequencies 30 MHz, 60 MHz and 100 MHz. The formula predicts...
We develop a closed-form expression in order to assess the nonlinear performance of flex-grid optical transmission systems. This simplified expression can estimate the performance of any super-channel of the spectrum allowing its introduction in Routing and Spectrum Assignment (RSA) algorithms which consider physical layer effects. The proposed method can model both uncompensated and dispersion managed...
In this paper, the Transmission-Line Matrix Method (TLM) is employed to calculate the scattering parameters (S-parameters) of a protective enclosure. The objective is to characterize distribution of the electromagnetic (EM) field in the near-field around the considered enclosure with the full wave TLM method. The coupling effects between transmitting monopole antennas inside the enclosure and its...
A summery review of several topics in higher order computational electromagnetic (CEM) are presented. First, constant speed parametrization (CSP) mapping between the parent and the final computational domain is presented. Next, we construct, numerically model, and analyze transformation-based metamaterial invisibility cloaks. These cloaks are continuously inhomogeneous and anisotropic. Finally, we...
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