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IEEE Transactions on Circuits and Systems

Issue 7 • Date July 1981

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Displaying Results 1 - 15 of 15
  • Guest editorial

    Publication Year: 1981, Page(s): 617
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    Freely Available from IEEE
  • Comments on "Computer Generation of Trees and Co-Trees in a Cascade of Multiterminal Networks

    Publication Year: 1981, Page(s):747 - 748
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (203 KB)

    The problem of efficient generation of all trees has been considered in the above paper' by Chen [1]. The method is to decompose the original graph into several components and determining appropriate subgraphs in each component and then combining these subgraphs to obtain the desired results. We show that this method has an undesirable feature, which is the duplicate generation of some trees. Ther... View full abstract»

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  • Fast Digital Filters with Low Round-Off Noise

    Publication Year: 1981, Page(s):716 - 723
    Cited by:  Papers (35)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB)

    A novel approach to the realization of fast and efficient IIR digital filters is presented. The realization is based on recently introduced state-space structures and retains and enhances their low noise and sensitivity properties while reducing the number-of-required multiplications. This permits the implementation of higher order optimal forms requiring only 1.34 to 1.65 times the number of mult... View full abstract»

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  • Suppressing limit cycles in digital incremental computers

    Publication Year: 1981, Page(s):723 - 730
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (960 KB)

    This correspondence examines the sources of limit cycle oscillations in Digital Incremental Computers and proposes several different methods for their suppression. A theoretical analysis is performed based on considering the effects of noise injected at the truncation points of the system and the results are verified by extensive simulation. View full abstract»

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  • Stochastic optimization in system design

    Publication Year: 1981, Page(s):702 - 715
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1440 KB)

    The nonlinear optimization problem and statistical design problem can both be formulated as a region search problem. In this paper, we present a stochastic optimization process, suitable for optimizing functions of a certain measure over generalized regions in R^n . Conditions for an optimal process are discussed, and examples of a wide range of different opti... View full abstract»

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  • Statistical design centering and tolerancing using parametric sampling

    Publication Year: 1981, Page(s):692 - 702
    Cited by:  Papers (93)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1232 KB)

    A new statistical circuit design centering and tolerancing methodology based on a synthesis of concepts from network analysis, recent optimization methods, sampling theory, and statistical estimation and hypothesis testing is presented. The method permits incorporation of such realistic manufacturing constraints as tuning, correlation, and end-of-life performance specifications. Changes in design ... View full abstract»

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  • Computer-aided analysis of switched-capacitor filters

    Publication Year: 1981, Page(s):681 - 692
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1256 KB)

    A technique is presented for computer-aided analysis for a class of switched-capacitor (SC) circuits that can be partitioned into elementary subnetworks. This new approach is distinctly different from other published techniques, because, rather than striving for complete generality, it incorporates features that are specifically needed in practical SC circuits in order to produce an efficient algo... View full abstract»

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  • VLSI design automation activities at M.I.T.

    Publication Year: 1981, Page(s):645 - 653
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1296 KB)

    A large part of the M.I.T. research program in very large-scale integrated circuits (VLSI) deals with design automation. Industry today is facing a "design crisis" that requires substantial advances in the state of the art in design aids. University.research such as that at M.I.T. is aimed at making such advances. The design of an integrated circuit is viewed as a series of transformations among v... View full abstract»

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  • Large moduli multipliers for signal processing

    Publication Year: 1981, Page(s):731 - 736
    Cited by:  Papers (46)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    The residue number system has been recently shown to be a viable signal processing media. However, it does possess limitations. One of the most serious is overflow prevention through magnitude scaling. One method of overcoming this defect is to increase the dynamic range of the numbering system. To this end a new high-speed large moduli multiplier has been developed. The multiplier is the result o... View full abstract»

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  • A design methodology and computer aids for digital VLSI systems

    Publication Year: 1981, Page(s):634 - 645
    Cited by:  Papers (55)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1760 KB)

    The current status of a research program at Carnegie-Mellon University aimed at the formulation of a hierarchical design methodology for digital VLSI circuits is described. In addition, this paper describes a set of computer aids which supports this methodology. One of the goals of this work is to provide a design environment which allows for a significant reduction in time between the initial con... View full abstract»

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  • A structured design methodology and associated software tools

    Publication Year: 1981, Page(s):618 - 634
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2368 KB)

    The problems encountered designing very large scale integrated circuits (VLSI) are fundamentally different from the problems encountered in the design of small scale integrated circuits. The differences require a new methodology of design for the new large scale circuits, and the new design methodology requires a new set of tools. The computer-aided design work at Caltech has progressed from a rec... View full abstract»

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  • Synthesis of the lossless reciprocal three-port based on a canonic form of its scattering matrix

    Publication Year: 1981, Page(s):736 - 744
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB)

    The canonic form of the three-port scattering matrix is deduced from the relations expressing the constraints of reciprocity and losslessness. One gives a particular construction of the denominator of the entries, which allows to solve the divisibility conditions resulting from the basic equations. The necessary and sufficient conditions are given which allow to synthesize the three-port as three ... View full abstract»

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  • Stanford overview in VLSI research

    Publication Year: 1981, Page(s):654 - 665
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1688 KB)

    The Stanford University environment provides an unique combination of systems applications coupled with a state-of-the-art IC fabrication facility. Tools for VLSI design are being developed in concert with the. evolution of chip designs--the largest design to date contains more than 10000 transistors. Design methodologies are discussed as well as specific tools and approaches for IC synthesis, lay... View full abstract»

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  • On the stability of digital filters designed using the concept of generalized-immittance convertor

    Publication Year: 1981, Page(s):745 - 747
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    A method for designing wave digital filters using the concept of generalized-immittance convertor has been reported recently by Antoniou and Rezk. In this paper is derived a stability criterion for this new type of filter. It is shown that the requirement for ensuring the absence of limit cycles in these filters is the same as the one proposed by Fettweis and Meerkcötter for the conventional ... View full abstract»

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  • Design aids for VLSI: The Berkeley perspective

    Publication Year: 1981, Page(s):666 - 680
    Cited by:  Papers (15)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2120 KB)

    Computer aids for integrated circuit (IC) design have been an integral part of the Berkeley IC program since its inception in the early 1960's. While our initial work concentrated on the development of simulation programs, such as SPICE2 and SPLICE, we are currently developing an integrated design system for VLSI circuits. The system is based on 1) the use of dedicated design stations, connected a... View full abstract»

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