A Pade´ via AWE fast frequency sweep for quasi-static coupled electromagnetic and circuit simulation

The Pade´ approximation via AWE (asymptotic wave expansion) and other model order reduction techniques have been used for the efficient solution of a wide variety of problems. The paper considers a coupled EM-circuit system where the EM portion of the system is expressed using boundary element integral equations represented by the method of moments (MoM), and the circuit portion is described using modified nodal analysis (MNA). The system therefore contains two different kinds of physics. The advantage of the coupled approach is the ability to observe circuit effects on EM quantities, and to design EM-aware microelectronic circuits. We show that Pade´ via AWE can be used successfully to implement fast frequency sweeps for coupled EM-circuit systems.