Title :
Shadowing effect in curvilinear diffractive lens antennas
Author :
Minin, I.V. ; Minin, O.V.
Author_Institution :
NSTU, Novosibirsk, Russia
Abstract :
The zone shadowing effect for DOE with two phase quantization levels is considered. Results of the numerical estimation show that fabrication of DOE on a curvilinear surface substantially increase the efficiency of surface usage and reduce the zone shadowing effect. For the given DOE parameters there is optimal shape of surface as well as its optimal space orientation relative to the radiation point source for which the efficiency of DOE surface usage is maximum.
Keywords :
antenna radiation patterns; diffractive optical elements; lens antennas; DOE; curvilinear antennas; curvilinear surface; diffractive lens antennas; diffractive optical elements; optimal space orientation; phase quantization levels; radiation point source; zone shadowing effect; Apertures; Dielectric losses; Diffraction; Fabrication; Fresnel reflection; Lenses; Optical surface waves; Refractive index; Shadow mapping; US Department of Energy;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606853
