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Circuit models for power bus structures on printed circuit boards using a hybrid FEM-SPICE method

By: Chunlei Guo; Hubing, T.H.;

2006 / IEEE

Description

This item was taken from the IEEE Periodical ' Circuit models for power bus structures on printed circuit boards using a hybrid FEM-SPICE method ' Power bus structures consisting of two parallel conducting planes are widely used on high-speed printed circuit boards. In this paper, a full-wave finite-element method (FEM) method is used to analyze power bus structures, and the resulting matrix equations are converted to equivalent circuits that can be analyzed using SPICE programs. Using this method of combining FEM and SPICE, power bus structures of arbitrary shape can be modeled efficiently both in the time-domain and frequency-domain, along with the circuit components connected to the bus. Dielectric loss and losses due to the finite resistance of the power planes can also be modeled. Practical examples are presented to validate this method