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Issue 4 • Date Nov 1993

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Displaying Results 1 - 8 of 8
  • Applications of PSPICE simulation software to the study of optoelectronic integrated circuits and devices

    Publication Year: 1993 , Page(s): 357 - 362
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (456 KB)  

    Software models for Si and GaAs pin photodetectors are described, for use in the simulation of optoelectronic integrated circuits (OEICs). These preliminary models, which include the effects of dark current and lumped internal impedance, are completely integrable with PSPICE software, and may be used to study the operating characteristics of independent devices and cascaded components in complex O... View full abstract»

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  • Noise margin criteria for digital logic circuits

    Publication Year: 1993 , Page(s): 363 - 368
    Cited by:  Papers (26)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (444 KB)  

    Techniques for evaluating the noise margin for families of digital logic circuits are discussed and evaluated. It is shown that the technique of evaluating the -1 slope points on the inverter transfer function as used in most modern textbooks is not a valid and reliable approach to evaluating noise margin values. It is argued that the most reliable and reasonable criterion is to maximize the produ... View full abstract»

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  • A project oriented approach to the teaching of machine perception

    Publication Year: 1993 , Page(s): 380 - 383
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (428 KB)  

    A set of computer simulation projects that have been assigned at various times during offerings of an advanced graduate level course on machine perception is discussed. The format of the projects is presented, and student results are discussed. The projects are novel in that they require advanced techniques of machine vision and are open-ended in that there are no specific solutions. The problems ... View full abstract»

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  • Symbolic convolution

    Publication Year: 1993 , Page(s): 386 - 393
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (616 KB)  

    An implementation of convolution using a symbolic mathematics software package is described. The emphasis is on the internal data structure needed to represent signals that are defined piecewise over disjoint intervals. Then the overlap-add form of convolution is used to produce the convolution of signals that are the sum of piecewise segments. A working implementation has been completed for both ... View full abstract»

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  • Solution of the Maxwell field equations in vacuum for arbitrary charge and current distributions using the methods of matrix algebra

    Publication Year: 1993 , Page(s): 350 - 356
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (480 KB)  

    A new matrix representation of classical electromagnetic theory is presented. The basis of this representation is a space-time, eight-by-eight differential matrix operator. This matrix operator is initially formulated from the differential form of the Maxwell field equations for vacuum. The resulting matrix formulation of Maxwell's equations allows simple and direct derivation of the electromagnet... View full abstract»

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  • Digital (IIR) filter biquad section simulated with PSPICE

    Publication Year: 1993 , Page(s): 383 - 385
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (196 KB)  

    A simple PSPICE model for an IIR direct-form 2 biquad section is described. Structures consisting of up to four biquad sections can be analyzed with the evaluation version of PSPICE. An application of the model in undergraduate electrical engineering education is given View full abstract»

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  • Analysis of robot dynamics and compensation using classical and computed torque techniques

    Publication Year: 1993 , Page(s): 372 - 379
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (580 KB)  

    A classical analysis of the dynamics of robot manipulators is presented. It is shown that these systems have configuration-dependent properties and can be open-loop unstable. Due to this fact, present day linear controllers are inefficient. On the other hand, nonlinear hardware and software compensation methods also are shown to have some limitations. Controllers based on the direct design algorit... View full abstract»

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  • A simple and unified proof of dyadic shift invariance and the extension to cyclic shift invariance

    Publication Year: 1993 , Page(s): 369 - 372
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (308 KB)  

    A simple and unified proof of the dyadic shift invariance and an extension to cyclic shift invariance are presented. First, the concept of the dyadic shift invariance (DSI) and cyclic shift invariant (CSI) functions is proposed. Basic properties of the DSI and CSI functions are considered. Then it is shown that the Walsh-Hadamard transform (WHT) and discrete Fourier transform (DFT) are, in fact, s... View full abstract»

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Educational research, methods, materials, programs, and technology in electrical engineering, computer engineering, and fields within the scope of interest of IEEE.

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Jeffrey E. Froyd
Texas A&M University