Title :
A substrate-dependent CAD model for ceramic multilayer capacitors
Author :
Lakshminarayanan, Balaji ; Gordon, Horace C., Jr. ; Weller, Thomas M.
Author_Institution :
Dept. of Electr. Eng., Univ. of South Florida, Tampa, FL, USA
fDate :
10/1/2000 12:00:00 AM
Abstract :
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
Keywords :
MMIC; S-parameters; ceramic capacitors; circuit CAD; equivalent circuits; integrated circuit design; microstrip circuits; 0 to 10 GHz; 0.5 pF to 0.47 muF; 5 to 62 mil; FR-4 substrates; ceramic multilayer capacitors; dielectric constant; equivalent-circuit parameters; extraction procedure; frequency response; lumped-element model; microstrip-mounted components; substrate-dependent CAD model; Capacitors; Ceramics; Dielectric constant; Dielectric substrates; Electrodes; Frequency; Microstrip; Nonhomogeneous media; RLC circuits; Resonance;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
