Large finite array analysis

The authors discuss a study to develop and test methods of fully predicting large antenna array performance using infinite array data. The methods devised are presented below, together with comparisons of predicted finite array performance and measured data from a 163 element waveguide 16 array. The routes presented from infinite to finite array data produce good results. The direct Fourier windowing technique from infinite to finite array patterns is quickest and produces reasonable results for any type of array element. The more rigorous methods that deduce the actual array couplings produce more accurate results for simple single mode element types. Information such as individual element active reflection coefficients for arbitrary scan angles is easy to deduce