%0 Journal Article %T The Close-Form Solution for Symmetric Butler Matrices %A C¨¦line Leclerc %A Herve Aubert %A Ahmed Ali %A Ayoub Annabi %A Maxime Romier %J PIER C %D 2012 %I EMW Publishing %R 10.2528/PIERC11111403 %X The design of a 2¡Á2 Butler matrix is usually based on an iterative process. In this paper, recurrence relations behind this process are found, and the close-form solutions, i.e., non-recursive functions of , are reported. These solutions allow the direct derivation of the scattering matrix coecients of symmetric and large Butler matrices. %U http://www.jpier.org/pierc/pier.php?paper=11111403