CHARACTERIZATION OF EMBEDDED PASSIVES USING MACROMODELS IN LTCC TECHNOLOGY

This paper discusses the frequency and time domain response of embedde d passive components in a multilayered structure fabricated using low temperature co-fired ceramic (LTCC) technology. A rational polynomial approximation that combines the accuracy of EM solvers with interpolat ion methods has been used to capture the frequency dependent losses an d parasitics of embedded passives in a macro-model. This method allows for a significant: speed-up in computation time while using commercia l EM solvers, The macromodel with suitable modification has been used to compute the time domain response in SPICE for typical embedded pass ive structures. Simulation results show good correlation with time dom ain reflectometry/time-domain-transmission (TDR/TDT) measurements, The behavior of embedded passives in the high frequency operation of tran smission lines and voltage divider networks has also been discussed.