LARGE FINITE ARRAY ANALYSIS USING INFINITE ARRAY DATA

The prediction of edge element behavior is a common problem during the design of large array antennas. The performance of the center element s can be approximated by an infinite array model, but the edge element patterns and active reflection coefficients cannot. The full element- by-clement analysis [1] of a large finite array is either excessively time consuming or impossible due to the computer power required. A stu dy has recently been carried out to develop and test methods of fully predicting large array performance using infinite array data. The meth ods devised are presented below, together with comparisons of predicte d performance and measured data from a 163-element WG-16 array.