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 0° to any value between 0° and 180°. 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.

Additional Metadata
Keywords Fresnel zone plate lens antennas, Sidelobe level control
Persistent URL dx.doi.org/10.1109/TAP.2006.886552
Journal IEEE Transactions on Antennas and Propagation
Stout-Grandy, S.M. (Sara M.), Petosa, A. (Aldo), Minin, I.V. (Igor V.), Minin, O.V. (Oleg V.), & Wright, J.S. (2006). A systematic study of varying reference phase in the design of circular fresnel zone plate antennas. IEEE Transactions on Antennas and Propagation, 54(12), 3629–3637. doi:10.1109/TAP.2006.886552