Modeling of crosstalk and propagation delays in the crossing interconnections on GaAs-based VHSICs

We have developed computer-efficient models of the crosstalk effects and propagation delays associated with the bilevel crossing interconnections on GaAs-based VHSICs. The interconnections on the first and second levels were modeled by a combination of lumped circuit parameters and distributed circuit transmission lines. The ground and coupling capacitances used in the model include the fringing fields as well the effects of shielding by the neighboring interconnections. These were determined by the method of moments in conjunction with a Green´s function appropriate for the geometry of the interconnections