Simulated response of Conic Fresnel Zone Plate Reflectors (CFZPS)

Planar Fresnel Zone Plates (FZP) substitute the curved surfaces of a Fresnel Reflector for an stepped one, getting advantages concerning to manufacturing and prize. Besides, this technology provides the possibility of designing conformed beam antennas, as for example when a double beam is required. The main disadvantage of FZP is the inherent loss in gain of the stepped approximation, though, as we have been able to prove, efficiency results to be very reasonable and equilibrated with the other advantages for many uses.