The assembling scheme in S-matrix based full-wave electromagnetic modelling systems

The basic principles and object peculiarities that have to be taken into account at "electromagnetic assembling" of a complicated device by known S-matrices of key-elements are discussed. The detailed automatic consideration of plane symmetry of lines, plane junctions and tees, longitudinal symmetry of filters and dividers, uniformity of many waveguide elements along transversal axes, search of identical elements or their consequences together with the extraction the "variable" and "non-variable" device parts makes possible to reduce the calculation times by orders. The usage of the proposed assembling schemes is extremely profitable at optimization problem solution for multiparametric couplers, diplexers and so on.