An Augmented Network Parameter Method for Rapid Electromagnetic-Circuit Co-Simulation in the Presence of Impinging Electromagnetic Waves

This article presents an innovative behavioral model to characterize the electromagnetic response from objects loaded with sources and terminations in the presence of external incident planewaves. The proposed method appends columns to the conventional network parameter matrix to account for the effect of incident planewaves by including vector spherical wave functions (VSWFs) in its formulation. The augmented network parameter (ANP) matrix thus obtained after appending new columns is amenable for seamless integration with traditional SPICE-based circuit solvers. In addition, once the ANP matrix is extracted for the system, any changes in the load or excitation conditions can be captured as a real-time computation, thereby offering extensive computational benefits over conventional approaches, which can also serve as a potential enabler for rapid inverse design and synthesis.