Design of an Unequally Spaced Reflectarray.
, A. Rydberg
IEEE Antennas and Wireless Propagation Letters, Vol. 2, pp. 33-35, June 2003.
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.