A linear and planar array simulation program for a Macintosh personal computer

The aim in writing this piece of software was to provide an array designer, or student studying antenna theory, with an interactive tool to aid in visualising the effects of the numerous parameters that specify a planar array. This work combines a variety of methods to calculate results for several physical situations. A novel representation of errors in element placement and excitation has also been developed, allowing their effect on radiation pattern to be assessed on the basis of a number of Monte-Carlo trials. Furthermore, the modular program structure, and the use of a series of menus and windows for data input, ensure easy expansion of the software in the future. The basis of the program is the 'model file', which contains the complete definition of the antenna in terms of the element type, the array geometry, the element excitations and any tolerances to he applied to the excitation parameters during plotting.<>