Antenna-Circuit Modeling for Accelerated Simultaneous Co-Simulation Using Clustering Model-Order Reduction

In this article, an approach for modeling radiation/scattering from antenna structures connected to a circuit is reported. This approach uses a single matrix formulation that combines a method of moments (MoMs) analysis of an antenna structure given that the antenna is being fed by a circuit represented using modified nodal analysis (MNA) equations. To reduce the computation time over some prescribed frequency bands, new cluster-based multiport model-order reduction (MOR) techniques are applied to the MoMs formulation. These techniques allow for a fast frequency sweep of the antenna-circuit model over a very large number of frequency points.