Title :
Fresnel zone plate reflector incorporating rings
Author :
Guo, Y.J. ; Barton, S.K.
Author_Institution :
Dept. of Electr. Eng., Bradford Univ., UK
Abstract :
A novel high-efficiency Fresnel zone plate reflector antenna is presented. The reflector consists of an inhomogeneous array of circular conducting rings printed on a grounded substrate. By adjusting the geometrical parameters of the rings and the distances between them, the reflector provides a space-varying phase correction required for focusing an incoming plane wave. Compared with a phase reversal zone plate, an average of 3-dB gain improvement and significant sidelobe reduction have been obtained.<>
Keywords :
antenna radiation patterns; microwave antenna arrays; reflector antennas; Fresnel zone plate reflector; circular conducting rings; gain improvement; geometrical parameters; grounded substrate; incoming plane wave; inhomogeneous array; microwave antennas; reflector antenna; sidelobe reduction; space-varying phase correction; Apertures; Costs; Dielectric substrates; Frequency; Fresnel reflection; Manufacturing; Phase shifters; Phased arrays; Receiving antennas; Reflector antennas;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
