An "add-on" analysis of large irregular strip arrays

The "add-on" procedure, introduced recently by Kastner [1]. [2]. begins with en initial expansion of the unknown current distribution into subsectional (pulse-type) basis functions, similarly to the Moment Method (MM). However. rather than generating a matrix equation as in the MM. we compute the amplitudes of the basis functions (denoted below as "pulse responses") in a, gradual manner where the scatterer is being built up from the segments as they are being added one at a time. At the end of each addition of a segment, the result for a physical subproblem is obtained. At each stage, a scattering problem need be solved for the additional segment only. Implying a 1x1 matrix inversion that yields the amplitude of the added segment in the presence of the other segments existing at that stage. Next, the amplitudes of these segments are also updated to account for the presence of the additional segment. With this, an addon stage has been completed and the next segment may be added.