Time domain reduced order macromodel for interconnects excited by incident fields

This paper presents an algorithm for reduced order macromodeling of high speed interconnects excited by incident electromagnetic fields. The reduced order macromodel has the form of a passive reduced order network with Norton equivalent sources at the ports representing the incident fields. A projection based order reduction method is presented to efficiently evaluate the Norton equivalent sources and Krylov subspace methods are used to obtain the passive reduced order network. The resulting macromodel is typically an order of magnitude smaller than the original one and can be simulated in standard time domain simulators such as SPICE.