Calculating Static Field and Charge Distributions Using a Full-Wave Boundary Element Method

In order to model configurations driven by broadband sources (e.g., digital signals), it is desirable to employ a full-wave modeling technique that works well at both high and low frequencies. This paper describes a method for improving the low-frequency performance of existing full-wave boundary element techniques and demonstrates how the full-wave model can be used to solve static electric field problems. The new approach performs linear transformations on the moment matrix utilizing an LU decomposition and matrix reconstruction. It does not require special basis functions and is relatively easy to implement in existing boundary element codes. Examples presented demonstrate how modified full-wave software is capable of calculating static field and charge distributions for a variety of configurations using the same algorithms and the same input used to do high-frequency calculations