Theses and Dissertations from UMD

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New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a give thesis/dissertation in DRUM

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Author: search.filters.author.Jiang, YuSubject: search.filters.subject.multi-dimensional hysteresis

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    CMOS N-Dimensional M-Level Hysteresis Circuits and Possible Applications
    (2007-11-27) Jiang, Yu; Newcomb, Robert W; Electrical Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Hysteresis is a natural phenomenon existing in many systems. Binary hysteresis is the simplest yet important model to study electronically generated hysteresis. Binary hysteresis circuits, the Schmitt trigger being an example, are widely used in reducing noise sensitivity, designing oscillators, generating chaotic signals, etc. A new concept, n-dimensional m-level multi-cell hysteresis is presented. A group of CMOS binary hysteresis circuits with full control which operate in all four quadrants is introduced. CMOS circuits, that give various one-dimensional multi-level hysteresis, in both current mode and voltage mode, are presented. Various combinations of adding forward and reverse binary hysteresis are demonstrated. CMOS circuits, in both current mode and voltage mode, that give two-dimensional multi-level multicell hysteresis, are designed. Further discussion is given on how to extend the results to more dimensions. Two-dimensional hysteresis is used to generate chaotic signals. A couple of areas where multi-cell hysteresis can be useful are suggested.