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IEEE Transactions on Circuits and Systems

Issue 3 • May 1974

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Displaying Results 1 - 25 of 30
  • Maximum power transfer in n ports with passive loads

    Publication Year: 1974, Page(s):327 - 330
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (463 KB)

    The problem of drawing maximum power from annport by suitably terminating it with another passivenport is studied. Methods are derived for determining sets of passive impedance matrices which are "optimal" in the sense that they draw maximum power from a givennport. It is shown that, in all nontrivial cases, if there exists any (passive or otherwise) optimum-load i... View full abstract»

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  • Synthesis of biconnected graphs

    Publication Year: 1974, Page(s):330 - 334
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (519 KB)

    In this investigation, it is necessary to distinguish pseudographs (self-loops and multiple lines allowed), multigraph (no self-loops but multiple lines are allowed), and graphs (neither self-loop nor multiple lines allowed). The problem of synthesizing graphs, multigraphs, and pseudographs having a prescribed degree sequence was solved by Hakimi. He also determined the conditions under which a co... View full abstract»

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  • A note on transfer and driving-point functions of iterated ladder networks

    Publication Year: 1974, Page(s):334 - 338
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (556 KB)

    A sequence of identical, linear, nonreciprocal processes is equivalent to a ladder network comprising reciprocal elements whose values increase in geometric progression. Thus the ladder with geometric progression is a generalization of the usual iterated ladder network. Simple formulas are derived for the transfer and driving point functions of such ladders. In the special case of the iterated lad... View full abstract»

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  • Moment sensitivities of the impulse response

    Publication Year: 1974, Page(s):359 - 364
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (515 KB)

    New measures of time-domain sensitivities of a mid-shunt low-pass filter are proposed, These measures are three constant numbers which are equal to the element sensitivities for the nth moments(n =1, 2, 3)of its impulse response. Some lemmas and a theorem are obtained which show that the moment sensitivities are favorable measures of the time-domain sensitivities. View full abstract»

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  • A low-sensitivity active distributed realization of rational transfer functions

    Publication Year: 1974, Page(s):391 - 395
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (471 KB)

    A novel method. for exactly realizing a rational transfer function using commensurate uniform RC lines(overline{URC})is presented. As an intermediate step in efficiently implementing the method, a new lowsensitivity grounded capacitor lumped RC active structure using operational amplifiers is developed. This structure leads directly to a low sensitivity distributed realization of a rati... View full abstract»

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  • A generalization of monotonicity applied to the DC analysis of nondifferentiable resistive networks

    Publication Year: 1974, Page(s):406 - 412
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (747 KB)

    The dc analysis of an important class of nondifferentiable nonlinear resistive networks is considered which include both piecewise linear and continuously differentiable cases. A localmu-functional is introduced to generalize a concept of monotonicity, and its useful properties are shown. The existence and uniqueness property of dc operating points is investigated in this class of resis... View full abstract»

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  • Dimension of N-ports

    Publication Year: 1974, Page(s):412 - 416
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (537 KB)

    The recently introduced concept of the dimension of an algebraicnport [1] is shown to be an invariant of thenport. This property led to a unique classification of all linear algebraic n ports in terms of their dimensions. Contrary to common belief, it is shown that the representation port-current vectors. andwis annvector, (Unless specified otherwise, al... View full abstract»

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  • An algorithm for modeling the step response behavior of ground stable nonlinear systems

    Publication Year: 1974, Page(s):417 - 423
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (561 KB)

    An algorithm for modeling the step response behavior of ground stable nonlinear devices and systems is presented. The algorithm converges in the mean-square sense to an exact orthogonal representation whenever the nonconstant component of the step response is a finiteenergy signal. Terminating the algorithm afterNiterations results in anNth-order model whose dynamics are segr... View full abstract»

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  • l_papproximation of the group delay response of one- and two-dimensional filters

    Publication Year: 1974, Page(s):431 - 436
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (505 KB)

    An algorithm is developed to design all-pass filters that best approximate in thel_{p}, sense a prescribed group delay response. This algorithm can be used for both the cases of one- and two-dimensional filters. To illustrate the method, several examples for designing one- and two-dimensional filters are solved. View full abstract»

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  • A modified N-path filter suited for practical realization

    Publication Year: 1974, Page(s):449 - 456
    Cited by:  Papers (17)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (775 KB)

    A method is presented which makes it possible to build filters that, in some respect, behave likeN-path filters but without suffering from the well-known disadvantages associated with the implementation of these latter filters, namely, incomplete cancellation of unwanted sidebands and interference caused by carrier leakage. In conventionalN-path filters the output signal is f... View full abstract»

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  • A simple way to determine the driving-point impedance function of an n port

    Publication Year: 1974, Page(s):456 - 458
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (277 KB)

    It is well known that the driving-point impedance at any port of an n port can be written as a function of the load impedances across the other(n - 1)ports and that this function is a quotient of two polynomials in the load impedances. A method is given to determine the coefficients of these polynomials with one impedance-measurement on the n port plus one multiplication per constant. View full abstract»

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  • Determination of impedance matrix Z(s) from givenZ(s)+Zprime(-s)

    Publication Year: 1974, Page(s):458 - 459
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (211 KB)

    A simple method for the determination of the impedance matrixZ(s)given,Z(s) + Z'(- s), is presented. View full abstract»

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  • Standing waves on a multimode ladder oscillator

    Publication Year: 1974, Page(s):461 - 462
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    A new ladder oscillator withNdegrees of freedom is presented. The stationary energies are determined and used to show that in the quasiharmonic approximation all standing wave modes on such a network are stable whenN + 1is a prime number. View full abstract»

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  • Correction to 'Symbolic Analysis for Computer Aided Circuit Design - The Interpolative Approach'

    Publication Year: 1974, Page(s): 462
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (80 KB)

    First Page of the Article
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  • Discrimination of a second-order injection synchronized oscillator against interfering tones

    Publication Year: 1974, Page(s):402 - 405
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The response of a new type of injection-synchronized oscillator, called a second-order injection-synchronized oscillator (SOISO), to a signal contaminated with an interfering tone has been studied and compared with that of a conventional type of synchronized oscillator (ISO). The superiority of the SOISO over the ISO in this respect has been theoretically established and checked with experimental ... View full abstract»

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  • On the time-domain realizability conditions for cascaded transmission-line networks

    Publication Year: 1974, Page(s):387 - 391
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    This paper considers the time-domain realizability conditions for networks consisting of cascaded sections of uniform lossless transmission lines. It is first demonstrated that the necessary and sufficient conditions for a sequence of real numbers to represent the amplitude coefficients of the reflected impulse response of such a network are equivalent to those for the existence of a solution to a... View full abstract»

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  • An approach to the analysis of injection-locked oscillators

    Publication Year: 1974, Page(s):395 - 401
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    By combining the instantaneous phase shift of a twosinusoid-input describing function with a phase response of the tuned circuit it has been possible to develop the locking equation for single-stage LC injection-locked oscillators ILO. The locking range as well as steady-state phase shift of an ILO are calculated for subharmonic, fundamental, and harmonic locking, the dc transfer characteristic of... View full abstract»

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  • Optimization of digital filters for low roundoff noise

    Publication Year: 1974, Page(s):424 - 431
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    This paper treats the problem of minimizing the roundoff noise in digital filters using fixed-point arithmetic under sinusoidal input. A basic assumption made is that of representing the roundoff error as white noise that is independent from sample to sample and from source to source. The minimax noise principle is introduced to serve as a guide in the filter design to optimize the structure for m... View full abstract»

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  • Remarks on 'Physical realization of the impedance function of short-circuited cascade of nonuniform lossless transmission lines (SCULL)'

    Publication Year: 1974, Page(s):459 - 461
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    It is shown how the table form of stability of linear sampleddata systems can be applied to test the stability of nonuniformly sampled and distributed parameter systems. View full abstract»

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  • Matched-filter lumped approximations for pulse applications

    Publication Year: 1974, Page(s):364 - 368
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The problem of approximating a matched filter for pulse waveforms with lumped network transfer functions is considered. Two particular lumped approximations of degrees four and six, respectively, are presented. A study of the performances of these filters is made, and it is found that their behavior is very similar to that of the ideal matched filter. View full abstract»

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  • Maximally flat nonrecursive two-dimensional digital filters

    Publication Year: 1974, Page(s):437 - 449
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB)

    The maximally flat criterion is extended to the design of two-dimensional nonrecursive digital filters which approximate circularly symmetrical low-pass specifications. Straightforward generalization of the one-dimensional method does not completely specify the coefficient matrix of the filter. The additional degrees of freedom can be used to increase locally the order of flatness at the origin an... View full abstract»

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  • Minimum mean-square-error approximation using transversal-type filters

    Publication Year: 1974, Page(s):348 - 353
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    The classical problem of weighted minimum mean-square error approximation using transversal-type filters is considered. Results from the theory of Hardy spaces are used to establish necessary and sufficient conditions for the convergence of transversal-type filters to the optimum linear causal filter. These show that the use of second-order (and higher) all-pass approximations to a pure delay is u... View full abstract»

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  • Theory and applications of simultaneous realization of transfer and sensitivity functions

    Publication Year: 1974, Page(s):382 - 387
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    The theory developed on the problem of simultaneous realization of a transfer function and a prescribed sensitivity has been used to design variable parameter filters. In particular, variable centerfrequency fixed bandwidth and variable-bandwidth fixed-gain filters are considered in detail. View full abstract»

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  • Exact synthesis with real amplifiers

    Publication Year: 1974, Page(s):369 - 376
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    Second-degree active filter circuits are synthesized with operational amplifiers having a single pole or two poles and one zero. The method is applied to obtain designs and sensitivities for six useful filter sections. It is shown 1) that the two-pole amplifier is sometimes not the better choice, even though it has more gain at the operating frequency, and 2) that sensitivities are optimized by tr... View full abstract»

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  • Logic partition for multiemitter two-level structures

    Publication Year: 1974, Page(s):354 - 359
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    The efficient use of high-speed logic modules depends on logic designs in which the fan numbers are kept small and the number of logic delays for critical signals held to a minimum. A logic partition technique is developed, based on the simple decomposition methods of Ashenhurst, which allows the efficient use of a multiemitter two-level logic (METLL) structure. where the logic performed at one le... View full abstract»

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