Novel technique for deembedding S-parameters in electromagnetic modeling of arbitrary circuits

Different numerical methods (MoM, FEM, TLM, FDTD) are successfully used for the analysis of reciprocal microwave circuits. As a result, one usually obtains the current distribution or the near field distribution and postprocessing of these data is performed in order to evaluate the circuit parameters. However, such deembedding techniques have two shortcomings: 1) their accuracy depends on local quantities, the accuracy of which is not as good as the accuracy of global quantities; 2) there is a problem of making the proper choice of local data that should be postprocessed. The paper presents a new deembedding technique for circuits whose ports are in the form of single propagating mode transmission lines. The new technique actually simulates real measurements, using S-parameter data, which are global quantities, for postprocessing.