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Electromagnetic compatibility (EMC) analysis of high-speed designs has become imperative due to rapidly increasing radio-frequency interference and emerging technological trends such as higher operating frequencies, denser layouts, and multifunction convergent products. In this paper, a simplified macromodel of multiconductor transmission lines (MTLs) exposed to incident fields is presented. The proposed formulation can also handle frequency dependence of resistance, capacitance, conductance, and inductance (RLGC) line parameters. The method employs the recently developed delay-extraction-based compact and passive MTL macromodel, while developing closed-form expressions for incident field analysis. An error bound for the proposed macromodel is also presented. The macromodel is simulation program with integrated circuit emphasis (SPICE) compatible and overcomes the mixed frequency/time simulation difficulties usually encountered during transient analysis, while guaranteeing the stability of the global transient simulation. The algorithm provides higher accuracy as well as significant speed gains for EMC analysis of transmission line networks as compared to the existing techniques. Index Terms--Circuit simulation, delay extraction, distributed interconnects, electromagnetic coupling, electromagnetic interference (EMI), high-speed modules, incident fields, method of characteristics (MoC), multiconductor transmission lines (MTLs), passive macromodels, printed circuit boards (PCBs), transient analysis.

Due to the rapid surge in operating frequencies and complexity of modern electronic designs, accurate/fast electromagnetic compatibility/interference analysis is becoming mandatory. This paper presents a closed-form SPICE macromodel for fast transient analysis of lossy multiconductor transmission lines in the presence of incident electromagnetic fields. In the proposed algorithm, the equivalent sources due to incident field coupling have been formulated so as to take an advantage of the recently developed delay extraction based passive transmission line macromodels. Also, a method to incorporate frequency-dependent per-unitlength parameters is presented. The time-domain macromodel is in the form of ordinary differential equations and can be easily included in SPICE like simulators for transient analysis. The proposed algorithm while guaranteeing the stability of the simulation by employing passive transmission line macromodel, provides significant speed-up for the incident field coupling analysis of multiconductor transmission line networks, especially with large delay and low losses Index Terms--Circuit simulation, delay extraction, distributed interconnects, electromagnetic coupling, EMI, high-speed modules, incident fields, method of characteristics, multiconductor transmission lines, passive macromodeis, printed circuit boards, transient analysis.

In this paper, an efficient time-domain macromodel for incident field coupling to lossy-multiconductor transmission lines is presented. The model takes the form of ordinary differential equations and can be easily included in SPICE like simulators for transient analysis. The model is based on the closed-form matrix-rational approximation of the exponential matrix describing Telegrapher's equations and semi-analytic rational approximation of forcing functions. Index Terms--Circuit simulation, electromagnetic coupling, EMI, interconnections, macromodeling, multiconductor transmission lines, PCB, transient simulation.

Simulation of high-speed circuits and interconnects in the presence of incident electromagnetic interference is becoming an important step in the design cycle. An accurate and efficient method for the analysis of incident field coupling to traces in inhomogeneous medium is described. The method is based on the application of the physical optics technique. An interconnect circuit simulation stamp is derived. This stamp provides an easy link to current simulators and to recently developed model reduction techniques. In addition to accounting for the inhomogeneity of the medium, this method provides significant in computational efficiency improvement over conventional approaches. Index Terms - Circuit simulation, electromagnetic susceptibility, model reduction, physical optics, transmission lines.

With continually increasing operating frequencies, analysis of electromagnetic interference (EMI)-related effects is becoming an important issue for high-speed designs. In this paper, an algorithm is presented for fast analysis of radiation and incident field coupling effects in high-speed circuits. The proposed technique provides an efficient means for combining the solutions from full-wave field solvers such as finite-difference time-domain (FDTD) method with circuit level simulators such as SPICE for calculating radiated/coupled fields in arbitrarily shaped interconnect structures. The technique speeds up the whole simulation process by employing model-reduction-based approach, and also overcomes the numerical stability problems associated with the FDTD, in the presence of nonlinear terminations. In addition, the proposed algorithm provides a direct access to existing vast device libraries of SPICE in EMI analysis. Index Terms--Circuit simulation, electromagnetic (EM) coupling, electromagnetic radiation, electromagnetic simulation.

This paper introduces a new time-domain approach for compact macromodeling of multiport high-speed circuits with long delays, characterized by tabulated data. The algorithm is based on partitioning the data in the time-domain and subsequently, approximating each partition via delayed rational functions. This results in a compact low-order macromodel in the form of delayed differential equations, which can be efficiently analyzed in the time-domain using circuit simulators. [ABSTRACT FROM AUTHOR]