Non-Planar Full-Metal Slot Reflectarray Antenna

Design and numerical characteristics of X-band non-planar full-metal slot reflectarray antenna are presented. The relative bandwidths of 19.6% upon a criteria of 3 dB directivity reduction and 31.2 dB peak directivity are obtained for the proposed reflectarray. The designed reflectarray size is 20λ×20λ and it consists of two panels assembled edge to edge that form non-planar surface. The proposed full-metal reflectarray design allows the use of laser-cutting techniques for antenna manufacturing. Comparison of the proposed non-planar reflectarray with optimized in different frequency range planar ones and a parabolic reflector is carried out. Experimental results for the X-band reflectarray prototype are presented.