Sierpinki gasket antennas as example of fractal antennas show multiband characteristics. The computer simulation of Sierpinksi gasket monopole with finite ground needs prohibitively large computer memory and computational time. Hybrid methods consist of surface integral equation method and physical optics or uniform geometrical theory of diffraction is expected to alleviate this computational b...

The present work investigates the propagation of a radio pulse in an unmagnetized, statistically inhomogeneous plasma causing regular refraction and anisotropic scattering. Using the framework of geometrical optics, a Fokker-Planck equation is derived and integrated within a two-moment approximation. The method allows a continuous transition from weak to strong angular scattering and yields pul...

Optical surface scattering analyses based on diffractive optics (DO) are typically applied to one surface; however, there is a need for simulating losses devices having many interactions such as light pipes. Light pipes often simulated with geometric (GO) using ray tracing, where driven by the slope distribution. In DO case, depend spatial frequency distribution and amplitude well wavelength, s...

Abstract Liouville’s equation on phase space in geometrical optics describes the evolution of an energy distribution through optical system, which is discontinuous across interfaces. The Galerkin spectral element method conservative and can achieve higher order convergence locally, making it a suitable for this equation. When dealing with interfaces space, non-local boundary conditions arise. B...