Analysis of field pattern of a MMW focal plane array

Summary form only given. In this paper the far field pattern of a millimeter wave focal plane array with a lens is calculated with a hybrid approach that uses ray tracing through the lens and diffraction calculation of propagation to the far-field. In order to keep beam size and beam quality from the aberration of the lens, a coma-free lens, that is designed by step integrate, is adopted. The field pattern calculated is presented