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By Topic

IEEE Transactions on Circuits and Systems

Issue 1 • January 1980

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Displaying Results 1 - 15 of 15
  • Analysis and design of tracking filters

    Publication Year: 1980, Page(s):45 - 50
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    This paper presents a study of tracking filters. Such filters are industrially important and useful in those applications requiring tight bandwidth control for obtaining improved signal-to-noise ratio (SNR). A "high-Q" tracking filter achieves good SNR and will "track" a wandering carrier frequency to maintain the same SNR. This paper outlines the analysis and design of tracking filters. The filte... View full abstract»

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  • On the realizability of state equations with RC 3-terminal network

    Publication Year: 1980, Page(s):53 - 57
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (506 KB)

    Necessary and sufficient conditions are derived for a minimal realization systemdot{x} = A_x + b_u,y = cx + duto have a transfer function which is realizable as a voltage transfer function of a transformerlessRC3-terminal network. View full abstract»

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  • Network transformations

    Publication Year: 1980, Page(s):57 - 59
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (317 KB)

    From a given 3-terminal linear network realization of a voltage transfer function (VTF)T, realizations of five different VTF's expressed in terms ofTare generated without disturbing the internal structure of the original network by employing at the most one additional Ideal operational amplifier. Suitable operators are introduced to express the operations involved in the netw... View full abstract»

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  • Unified single-amplifier filters

    Publication Year: 1980, Page(s):62 - 64
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (361 KB)

    A unified treatment of single-amplifer filters is described using a linear-graph representation of the passiveRCsection. This allows identification of familiar active networks in terms of branch admittances and the incorporation of amplifier Imperfections. View full abstract»

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  • Locking characteristics of synchronized oscillators in presence of interference

    Publication Year: 1980, Page(s):64 - 67
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (466 KB)

    This correspondence begins with a critical review of the phenomenon of injection synchronization in an oscillator incorporating a low-Qtank circuit. A technique of improving the locking time of an injection synchronized oscillator (ISO) has been suggested. Also presented is a method of evaluating the locking range and locking time of an ISO in the presence of an interfering tone. The re... View full abstract»

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  • Correction to 'A Force Directed Component Placement Procedure for Printed Circuit Boards'

    Publication Year: 1980, Page(s): 71
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (31 KB)

    First Page of the Article
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  • Transversal filters with nonuniform tap spacings

    Publication Year: 1980, Page(s):1 - 11
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    Some basic analytic relationships between tap gains, tap spacings, and sample values of a frequency spectrum on the frequency axis are derived for a transversal filter with nonuniform tap spacings. 'As an application of these results, a few realization conditions are shown for a transversal filter with a definite number of taps, together with several numerical examples. View full abstract»

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  • Reduction and expansion of live and safe marked graphs

    Publication Year: 1980, Page(s):68 - 71
    Cited by:  Papers (41)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    In this paper it is proved that certain parallel, series, and circuit reductions and expansions on a marked graph do not change the number of its equivalence classes of live and safe markings. The reductions are aseful for the analysis of marked graphs, and the expansions can be used for synthesizing live and safe marked graphs. View full abstract»

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  • A different look at roundoff noise in digital filters

    Publication Year: 1980, Page(s):59 - 62
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    One of the sources of inaccuracy due to finite word length Implementation of digital filters is the multiplication roundoff noise. In this paper, two new approaches are outlined and illustrated for the calculation of this noise, by using digital all-pass functions as the basis. Both of these methods are shown to have computational advantages over the conventional ones. View full abstract»

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  • Realizations of a state-space model from two-dimensional input-output map

    Publication Year: 1980, Page(s):36 - 44
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (912 KB)

    This paper discusses the problem to realize an internal description from two-dimensional input-output map. First, for a class of Roesser's model such that the denominator of the transfer function can be expressed by product of two polynomials of a variable, structure decomposition is carried out from the standpoint of separate local controllability and observability, and it is shown that the model... View full abstract»

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  • Stability analysis of two-dimensional digital recursive filters

    Publication Year: 1980, Page(s):11 - 15
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    A new approach to the stability problem for the two-dimensional digital recursive filter is presented. The bivariate difference equation representation of the two-dimensional recursive digital filter Is converted to a multiinput-muliloutput (MIMO) system similar to the statespace representation of the one-dimensional digital recursive filter. In this paper, a pseudo-state representation is used an... View full abstract»

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  • On the design of broad-band 90° phase-splitting networks

    Publication Year: 1980, Page(s):30 - 36
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    A new design method is developed for 90 ° phase-splitting networks which have arbitrary single-sideband suppression characteristic. The proposed method is based on the insertion loss filter design approach. Characteristic function of a 90 ° phase-splitting network is defined, and Its properties are investigated. The investigation leads to the development of a design procedure by which a ... View full abstract»

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  • A Floquet theory of the general linear rotating machine

    Publication Year: 1980, Page(s):15 - 19
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    As is well-known, the fundamental assumption underlying Park's decisive analysis of the ideal linear three-phase rotating machine is that all windings on the (nonsalient) stator are in effect sinnsoidally spacially distributed as far as concerns the calculation of any self or mutual magnetic flux linkage. As Park has shown, there exists a suitable reference frame in which such an "ideal" machine a... View full abstract»

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  • Elimination of granularity and overflow limit cycles in minimum norm recursive digital filters

    Publication Year: 1980, Page(s):50 - 53
    Cited by:  Papers (7)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    A method of guaranteeing asymptotic stability in a recursive digital filter (using fixed point arithmetic) is presented. Using this method a particular implementation of the second-order "coupled form" recursive digital filter is demonstrated to be completely free from limit cycle oscillations under zero input conditions. View full abstract»

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  • Error bounds on solutions of nonlinear networks when using approximate element characteristics

    Publication Year: 1980, Page(s):20 - 29
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (912 KB)

    This paper discusses the problem of errors that arise when using approximate element characteristics to represent the nonlinear elements in a network. In particular, we study the use of piecewise linear approximations, and consider both resistive and dynamic networks. The logarithmic derivative of a mapping as well as the measure of a square matrix are used to compute bounds on the solution errors... View full abstract»

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