1,721,645 research outputs found
The parabolic equation model for the numerical analysis of the diffraction at an impedance wedge: skew incidence case
No full textIEEE TRANS. ANTENNAS PROPAGAT
Numerical analysis of the diffraction at an anisotropic impedance wedge
No full textIEEE TRANS. ANTENNAS PROPAGAT
A finite element approach to the electromagnetic interaction with rotating penetrable cylinders of arbitrary cross section
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Radiation of a vertical electric dipole over a resistive sheet
No full textThe radiation of a vertical electric dipole over a thin dielectric slab is analysed. The problem can be decomposed into two simpler ones involving the radiation of the same dipole, first over a perfectly conducting plane, which has a trivial solution, and then over an impedance plane, for which the Green's function can be directly obtained from the corresponding scalar problem. To demonstrate the effectiveness of the solution for real structures of finite extension, the results are compared with those obtained by resorting to a moment method solution and to a physical optics technique. The proposed Green's function can be used to analyse the radiation of wire antennas in the presence of planar resistive structures
Electromagnetic scattering from longitudinally corrugated cylinders
No full textThe scattering of plane electromagnetic waves from circular cross-section cylinders, longitudinally corrugated to realize anisotropic structures, is analyzed. The solution is devised at oblique incidence and for an arbitrary polarization of the incident wave using a rigorous Floquet modal expansion of the field, The implementation of the procedure is discussed with emphasis to its numerical efficiency
EM scattering from anisotropic impedance wedges at oblique incidence: Application to artificially hard and soft surfaces
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