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An early characterization of integrated circuit passive isolation structures is crucial to predict their performance and effectiveness in minimizing substrate coupling. In this paper, an electromagnetic (EM) modeling methodology is proposed, which can be applied to different types of isolation structures based on interference blocking. It consists in characterizing the different doping profiles by identifying those propagation modes with a greater contribution to substrate coupling and to the aggressor-victim transfer function. This allows a fast EM characterization, providing insight on the different isolation mechanisms, identification of transitory effects, and a fast prediction of isolation effectiveness. [ABSTRACT FROM PUBLISHER]

This paper presents a methodology to evaluate different integrated-circuit substrate technology options in terms of interference coupling. It is based on the electromagnetic characterization of the different substrate configurations as radial multilayered dielectric lossy open waveguides and the selection of the propagation modes that effectively contribute to substrate coupling. In addition, attenuation patterns are obtained for different technologies, doping profiles, frequencies, and interference mechanisms in order to provide a tool for early interference prediction, electromagnetic compatibility performance evaluation and floorplan strategy definition. [ABSTRACT FROM AUTHOR]