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    Efficient Full-Wave Simulation for Very Large Scale Off-Chip Interconnects

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    Author
    Wang, Xing
    Issue Date
    2006
    Advisor
    Dvorak, Steven L.
    Prince, John L.
    Committee Chair
    Dvorak, Steven L
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    The requirement to simulate larger and more complex interconnect circuits is being driven by the rapid developments that are taking place in the integrated circuit industry, where more complex circuits are continually being designed. Since full-wave analyses rigorously account for all the higher-order modes, in addition to the transmission line mode (i.e., the Transverse ElectroMagnetic (TEM) mode), they provide more accurate results than conventional 2-D analysis tools, which are based on the assumption that only a TEM mode exists. Furthermore, a full-wave analysis is required to accurately model the physics of complex 3-D interconnects.In order to address this need a Full-Wave Layered Interconnect Simulator (UA-FWLIS) was previously developed. UA-FWLIS is a Method of Moments (MoM) based tool for the analysis of stripline interconnects. However, UA-FWLIS could only handle a maximum of 10000 unknowns for signal traces in a single layer. Our final goal is to simulate complex practical systems, which have hundreds of thousands of unknowns and consist of multiple layers with vias interconnecting the different layers. In this dissertation, we extend the prototype full-wave simulator so that it can handle reactions between signal traces and vias, as well as reactions between two multiple layers. This is accomplished by employing analytical techniques to the reactions elements, thereby avoiding the use of inefficient numerical integration algorithms. This leads to substantial reductions in the matrix filling time, e.g., two orders of magnitude reductions for moderate size problems.In addition to improving the matrix filling time, we also dramatically reduce the matrix solution time by employing sparse matrix solution techniques. We demonstrate that sparse reaction matrices are produced when modeling stripline interconnects provided that a parallel-plate Green's function is employed in the analysis. We found that by applying sparse matrix storage techniques and a sparse matrix solver, it is possible to dramatically improve the matrix solution time when compared with a commercial MoM-based simulator. This also makes it possible to solve much larger problems. The contribution of this dissertation empowers the current full-wave simulator to handle more realistic problems and makes full-wave simulations of very large scale stripline interconnect structures feasible.
    Type
    text
    Electronic Dissertation
    Degree Name
    PhD
    Degree Level
    doctoral
    Degree Program
    Electrical & Computer Engineering
    Graduate College
    Degree Grantor
    University of Arizona
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