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IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications

Issue 1 • Date Jan 1999

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Displaying Results 1 - 20 of 20
  • Interconnect simulation in a fast timing simulator ILLIADS-I

    Publication Year: 1999, Page(s):178 - 189
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    This paper presents a new technique to simulate RLC/RC interconnects and driving nonlinear circuits with high computational efficiency. We introduce ILLIADS-I, a fast transistor-level timing simulator for MOS circuits driving RLC/RC interconnects. The RLC/RC interconnect networks are reduced to an appropriate model and then simulated in the timing simulator as a modified generic circuit primitive.... View full abstract»

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  • The partial realization problem for complex Hamburger series and complex lossless multiport networks

    Publication Year: 1999, Page(s):161 - 177
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    A formal matrix power series comprised of the Markov parameters of a complex lossless distributed system is considered. It is shown that certain matrix Pade approximants or continued fraction approximants to such a series are realizable by means of lumped lossless elementary building blocks including imaginary elements and can indeed be considered as approximations to immittance functions associat... View full abstract»

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  • From computing with numbers to computing with words. From manipulation of measurements to manipulation of perceptions

    Publication Year: 1999, Page(s):105 - 119
    Cited by:  Papers (639)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    Discusses a methodology for reasoning and computing with perceptions rather than measurements. An outline of such a methodology-referred to as a computational theory of perceptions is presented in this paper. The computational theory of perceptions, or CTP for short, is based on the methodology of CW. In CTP, words play the role of labels of perceptions and, more generally, perceptions are express... View full abstract»

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  • Symbolic-numeric circuit analysis or symbolic circuit analysis with online approximations

    Publication Year: 1999, Page(s):197 - 207
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    This paper describes a method for obtaining simplified symbolic expressions for the transfer functions of analog electronic circuits and, in particular, analog transistor circuits. The circuits are modeled as linear lumped RLC electrical networks with dependent sources. Both the frequency and the values of the components appear as symbols in the transfer functions. The simplification is done by sy... View full abstract»

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  • Darlington synthesis revisited

    Publication Year: 1999, Page(s):14 - 21
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    An approach to Darlington's synthesis is described which is based entirely on a single Foster reactance (LPR) function. The procedure stems from the remarkable result that any section producing an arbitrary transmission zero within its class (Brune, type C, type D, reciprocal, or nonreciprocal), can be extracted from any prescribed LPR function, leaving an LPR remainder of reduced degree. The nonr... View full abstract»

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  • Passive multipoint moment matching model order reduction algorithm on multiport distributed interconnect networks

    Publication Year: 1999, Page(s):140 - 160
    Cited by:  Papers (112)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (864 KB)

    In this paper, we introduce a general method of interconnect simulation based on distributed circuits. The algorithm is very efficient and consists of two main steps. In the first step, each distributed line is modeled by a finite order system with passivity preservation and multipoint moment matching of its input admittance/impedance matrix. In the second step, an Arnoldi-based congruence transfo... View full abstract»

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  • A fast adaptive algorithm for image restoration

    Publication Year: 1999, Page(s):216 - 220
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    An adaptive filtering algorithm based on an Euclidean direction search (EDS) method is presented for image restoration. It is a fast algorithm and has a computational complexity of O(N) for least squares optimization. Computer simulations illustrate that this algorithm is very effective in image restoration. The figures for signal-to-noise ratio improvement (SNRI) produced by this algorithm are co... View full abstract»

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  • Darlington's contributions to transistor circuit design

    Publication Year: 1999, Page(s):102 - 104
    Cited by:  Papers (12)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (60 KB)

    Darlington is credited with the discovery and initial demonstration in the early 1950's of what ever since has been known as the Darlington transistor pair, or simply the Darlington transistor or Darlington pair. This article provides examples of Darlington's wide-ranging technical interests and his creativity addressed to the solution of real engineering problems View full abstract»

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  • Passivity and complexity

    Publication Year: 1999, Page(s):71 - 82
    Cited by:  Papers (108)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (912 KB)

    Nature abounds with complex patterns and structures emerging from homogeneous media operating far from thermodynamic equilibrium. Such phenomena, which are widely observed in both inanimate (nonbiological) and biological media, can be modeled and studied via the CNN (cellular neural/nonlinear network) paradigm in an in-depth and unified way. Whether a homogeneous medium is capable of exhibiting co... View full abstract»

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  • A unified approach to statistical design centering of integrated circuits with correlated parameters

    Publication Year: 1999, Page(s):190 - 196
    Cited by:  Papers (30)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    This paper presents a general method for statistical design centering of integrated circuits with correlated parameters. It unifies worst-case design, nominal design and tolerance design in a single framework by selecting appropriate norms to measure the distances from the nominal values. The method uses an advanced first-order second moment technique as an alternative to the simplicial algorithm.... View full abstract»

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  • A history of network synthesis and filter theory for circuits composed of resistors, inductors, and capacitors

    Publication Year: 1999, Page(s):4 - 13
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB)

    This paper is an informal history of the birth and growth of network synthesis and filter theory, as it was developed for RLC circuits. It includes events, experiences, and anecdotes which are not all well documented but may make interesting reading. Other papers in this issue are histories of other aspects of circuit theory; for the most part descended from the RLC theory View full abstract»

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  • Recent trends in the stability analysis of hybrid dynamical systems

    Publication Year: 1999, Page(s):120 - 134
    Cited by:  Papers (99)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (844 KB)

    Dramatic progress in computing capabilities has resulted in the synthesis and implementation of increasingly complex dynamical systems. Since such systems frequently exhibit simultaneously several kinds of dynamic behavior in different parts of the system, they are referred to as hybrid dynamical systems. Such systems frequently defy traditional modeling and analysis techniques since the different... View full abstract»

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  • Fractional delay FIR filter design with the Darlington transform

    Publication Year: 1999, Page(s):208 - 211
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    In this brief, we present a method for the design of finite-impulse response (FIR) digital filters with an approximately constant group delay in a lowpass interval of the frequency axis. Our approach is based on a transform, that was introduced by S. Darlington. The approximation is performed in a complex ζ-plane, where an infinite-impulse response transfer function with a prescribed denomina... View full abstract»

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  • Structure of quasi-primitive multiports

    Publication Year: 1999, Page(s):22 - 40
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1100 KB)

    A quasi-primitive n-port is described by an admittance matrix of the form Y(p)=p-1 A+B+pC in which A, B, C, are real, symmetric, semidefinite n×n matrices. Any m-port, m<n, derived by ignoring some chosen (m-n) ports of the n-port described by Y(·) is a descendant of Y(·). Any such descendant is described by its own admittance matrix Y'(·) called then a des... View full abstract»

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  • Soul of circuit theory. A review on research activities of graphs and circuits in Japan

    Publication Year: 1999, Page(s):83 - 94
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    This paper reviews research activities in the area of topological aspects of circuit theory in Japan, most of which have been done after the previous report of H. Watanabe in the Special Centennial IEEE Transactions on Circuits and Systems, January 1984 issue, and presents main results obtained by Japanese circuit theorists. Throughout these research activities, it can be seen that the soul of cir... View full abstract»

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  • Bounds for discrete-time Volterra series representations

    Publication Year: 1999, Page(s):135 - 139
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    We give a Volterra-series representation theorem for discrete-time input-output maps that are causal and analytic. The theorem provides a bound on the error in approximating the series with its first p+1 terms. A detailed example is given to illustrate how the theorem can be used View full abstract»

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  • Methods for linear systems of circuit delay differential equations of neutral type

    Publication Year: 1999, Page(s):212 - 215
    Cited by:  Papers (144)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    Delay differential equations (DDEs) occur in many different fields including circuit theory. Circuits which include delayed elements have become more important due to the increase in performance of VLSI systems. The two types of circuits which include elements with delay are transmission lines and partial element equivalent circuits. The solution of systems which include these circuit elements are... View full abstract»

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  • Generalized Darlington synthesis

    Publication Year: 1999, Page(s):41 - 58
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    The existence of a “Darlington embedding” has been the topic of vigorous debate since the time of Darlington's original attempts at synthesizing a lossy input impedance through a lossless cascade of sections terminated in a unit resistor. This paper gives a survey of present insights in that existential question. In the first part it considers the multiport, time invariant case, and it... View full abstract»

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  • A design method for half-band FIR filters

    Publication Year: 1999, Page(s):95 - 101
    Cited by:  Papers (19)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    Present methods for designing half-band filters use iterative approaches such as the well-known Parks-McClellan algorithm or some variant of linear programming. Here we give a direct method using Chebyshev polynomials, which provides a reduction in design time over previous methods by about a factor of ten. For all practical purposes the response of the resulting filter is equal-ripple in both pas... View full abstract»

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  • Transfinite electrical networks

    Publication Year: 1999, Page(s):59 - 70
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    This is a tutorial/survey paper that provides an explanation of “transfinite electrical networks.” The theory of such networks has been developing only over the past decade, and undoubtedly much is yet to be discovered. It is quite abstract, and its mathematics is complicated. In this work we try to facilitate an understanding of its main ideas without encumbering comprehension with to... View full abstract»

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