Radiation from vertical dipole sources placed inside a grounded dielectric slab covered with a thin microstructured metal screen having annular geometry is studied. The screen is represented through a locally homogenized surface impedance dyadic independent of the azimuthal coordinate, hence is a homogenized omnidirectional metasurface. The excited field is also omnidirectional; we propose here both analytical and numerical models for the calculation of its far-field pattern, the former valid for radially constant surface impedances, the latter valid for piecewise-constant impedances.
Radiation from vertical dipole sources in the presence of homogenized omnidirectional metasurfaces / DI RUSCIO, David; Burghignoli, Paolo; Baccarelli, Paolo; Galli, Alessandro. - ELETTRONICO. - (2014), pp. 1933-1934. (Intervento presentato al convegno The 8th European Conference on Antennas and Propagation (EuCAP 2014) tenutosi a L’Aia, Paesi Bassi nel 7-11 aprile 2014) [10.1109/EuCAP.2014.6902119].
Radiation from vertical dipole sources in the presence of homogenized omnidirectional metasurfaces
DI RUSCIO, DAVID;BURGHIGNOLI, Paolo;BACCARELLI, Paolo;GALLI, Alessandro
2014
Abstract
Radiation from vertical dipole sources placed inside a grounded dielectric slab covered with a thin microstructured metal screen having annular geometry is studied. The screen is represented through a locally homogenized surface impedance dyadic independent of the azimuthal coordinate, hence is a homogenized omnidirectional metasurface. The excited field is also omnidirectional; we propose here both analytical and numerical models for the calculation of its far-field pattern, the former valid for radially constant surface impedances, the latter valid for piecewise-constant impedances.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
