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A substrate-dependent CAD model for ceramic multilayer capacitors

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3 Author(s)
B. Lakshminarayanan ; Dept. of Electr. Eng., Univ. of South Florida, Tampa, FL, USA ; H. C. Gordon ; T. M. Weller

In this paper, a substrate-dependent lumped-element model for ceramic multilayer capacitors is presented. The height and dielectric constant of a substrate have a significant impact on the frequency response of a chip capacitor, and these effects cannot be treated independently from the capacitor model. Rather, the equivalent-circuit parameters in the model must be made to vary in accordance with changes in the substrate. The model presented in this paper is suitable for microstrip-mounted components, and has been applied up to 10 GHz for values from 0.5 pF to 0.47 μF, and for FR-4 substrates ranging in height from 5 to 62 mil. The modeling and extraction procedure is demonstrated for 0805- and 1206-style capacitors

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:48 ,  Issue: 10 )