Publication Type:

Journal Article


IEEE Antennas and Wireless Propagation Letters , IEEE, Volume 2, Number 1, p.33-35 (2003)



Antenna arrays, antenna radiation patterns, Bandwidth, Costs, differential evolution algorithm, Directive antennas, Directivity, equally spaced reflectarrays, Fabrication, Feeds, Genetic algorithm, Genetic algorithms, Microstrip antenna arrays, Microstrip antennas, microstrip patch elements, Planar arrays, reflector antennas, sidelobe levels, unequally spaced reflectarray, X-band


We present the design and experimental results of an X-band unequally spaced reflectarray of microstrip patch elements. For a given number of elements, it is shown that reduced sidelobe levels can be attained for unequally spaced reflectarrays compared to that of equally spaced reflectarrays with no significant change in directivity and array size. The synthesis tool used for deriving the element positions is a variant of the genetic algorithm, namely the differential evolution algorithm.

Cite this Research Publication

D.G. Kurup, Himdi, M., and Rydberg, A., “Design of an unequally spaced reflect-array”, IEEE Antennas and Wireless Propagation Letters , vol. 2, pp. 33-35, 2003.