A CELLULAR-SPACE-DIVISION-BASED METHOD OF MOMENTS ALGORITHM FOR THE PATTERN-ANALYSIS OF PRINTED-CIRCUIT RADIATORS

A cellular-space-division-based method of moments (MoM) algorithm for the analysis of geometries involving imperfectly conducting planar rad iators as well as lossy and finite-extent dielectric substrates is pre sented. Since the technique-via the volume equivalence theorem-replace s the structure under analysis with an equivalent structure composed o f thin-wall cells, modeling of the surrounding environment is not requ ired, hence, completely avoiding the need for absorbing boundary condi tions. Real (as opposed to perfect) material parameters are incorporat ed via properly defined surface impedances. Several examples of radiat ion patterns (including radiation underneath the ground plane of a fin ite-extent substrate) of planar geometries are presented. The calculat ed patterns are compared with measured results and are found to be in good agreement.