Title :
A Systematic Study of Varying Reference Phase in the Design of Circular Fresnel Zone Plate Antennas
Author :
Stout-Grandy, Sara M. ; Petosa, Aldo ; Minin, Igor V. ; Minin, Oleg V. ; Wight, Jim
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, Ont.
Abstract :
A circular Fresnel zone plate antenna was simulated using a finite difference time domain software to study the effect of changing the reference phase from the standard 0deg to any value between 0deg and 180deg. Several prototypes were built to validate the simulations using four different focal-length-to-diameter (F/D) ratios. It was found that a significant improvement in the level of the first sidelobe, up to about 9 dB according to the simulations, could be achieved without sacrificing gain or cross-polarization levels
Keywords :
antenna radiation patterns; finite difference time-domain analysis; planar antennas; zone plates; circular Fresnel zone plate antenna; finite difference time domain software; reference phase; Antenna measurements; Apertures; Finite difference methods; Fresnel reflection; Lenses; Optical design; Software prototyping; Software standards; Time domain analysis; Virtual prototyping; Fresnel zone plate lens antennas; sidelobe level control;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.886552
