Thin-film passive circuit simulation on basis of reduced equival

Details Thin-film passive circuit simulation on basis of reduced equival Thin-film passive circuit simulation on basis of reduced equival

1998-03-24

2000-02-29

Teska, Kevin J.

39550026, G06F 1750, G06F 9455

Patent

active

060319860

ABSTRACT:
A simulator and its operation, for simulating electromagnetic behaviour of an IC (integrated circuit) of thin-film passive circuit components, uses a simple equivalent circuit model to minimise computer processing time while retaining good model accuracy in spite of the energy losses and different film thicknesses, conductivities and dielectric properties which occur in a passive integration IC. The procedure includes the steps of creating a geometric model of a surface of the conductor pattern of the IC, forming a matrix representation of Maxwell's equations with values associated with electric and magnetic field couplings between locations each of which is centered on a main geometrical element, the main geometrical elements being a subset of geometrical elements in the geometric model, and then correlating values of matrix coefficients of the equations with coefficients of an admittance matrix representative of an equivalent circuit model for the conductor pattern in terms of sub-circuits which are interconnected with each other via main nodes having a one-to -tne correspondence with the main geometrical elements. The sub-circuits between these main nodes of the equivalent circuit model for the passive integration IC includes sets of parallel branches of which a first branch includes a capacitor which modesl an electric field contribution, a second branch includes an inductor in series with a capacitor which together model a magnetic field contribution, and at least one further branch includes at least one resistor modelling a contribution to energy loss of the electric and magnetic fields, the energy loss occurring in both dielectric and conductive material of the IC.

REFERENCES:
patent: 5625578 (1997-04-01), Cloux et al.
"FASTERIX, an environment for PCB simulation", by R. du Cloux, et al., Electromagnetic Compatibility 1993, pp. 213-218.
"Reduced Equivalent Circuit Model for PCD", by R.F. Milsom et al., Philips J. Res. 48 1994, pp. 9-35.
"EMC Simulations and Measurements", by R. du Cloux, et al., Electromagnetic Compatibility 1995, pp. 185-190.
"Passive Schaltungen per Stempeldruck", in Elektronik Feb. 1995 pp. 50-56. (No English t'lation).

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