A radiation pattern synthesis technique for end-fire arrays

A nonlinear computer programming technique, based on the method of "steepest descents" is applied to the problem of synthesizing radiation patterns for end-fire arrays. Any of the array variables may be used to produce the desired pattern characteristics. The sidelobe suppression of 13 and 21 element arrays is achieved by adjusting both element positions and phases. It is also shown that the pattern gain of end-fire arrays can be increased by using a nonlinear phase progression.