Asymmetric-shaped beam patterns from a continuous linear aperture distribution

Abstract

A design method previously developed to give symmetrical shaped patterns from a continuous linear aperture, with individual control of the amplitude of ripples and the heights of unshaped side lobes up to any specified order, is shown to be applicable to asymmetric patterns as well. The method is based on the introduction of complex roots (to achieve null filling in the shaped region) in the technique previously developed by R. S. Elliott to obtain asymmetric Taylor patterns. Power synthesis, where the radiation pattern becomes complex, and real field synthesis, which yields a pure real pattern, are studied. The procedure is illustrated with two examples corresponding to a cosecant squared pattern, obtained by power and real field synthesis, respectively. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 15: 288–291, 1997