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Circuits and Systems, IEEE Transactions on

Issue 3 • Date March 1976

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Displaying Results 1 - 12 of 12
  • Some new operational-amplifier circuits for the realization of the lossless floating inductance

    Publication Year: 1976 , Page(s): 171 - 173
    Cited by:  Papers (8)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (353 KB)  

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  • Cascade synthesis of polylithic crystal filters containing double-resonator monolithic crystal filter (MCF) elements

    Publication Year: 1976 , Page(s): 146 - 154
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (960 KB)  

    In crystal filter design the use of low-pass prototype networks containing frequency invariant reactances is well known. It is shown in this paper that if this concept is extended to the double-resonator monolithic crystal filter (MCF) section, then all the classical transmission zero producing networks, e.g., the Brune, Darlington C-type, and Darlington D-type, may be realized in a form containing low-pass prototype MCF sections. This result allows the techniques of reciprocal cascade synthesis to be applied to the direct synthesis of arbitrary lossless even degree transfer functions in crystal filter form. Explicit expressions are given by which the prototype MCF element values may be obtained View full abstract»

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  • Realization of a digital filter using a variation of partial fraction expansion

    Publication Year: 1976 , Page(s): 178 - 181
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (408 KB)  

    The realization of a digital transfer function using a variation of partial fraction is accomplished. By this method, the obtained network features a new cascade network structure. Further, this paper proves relationships between coefficients of the digital transfer function and the values of the network elements. View full abstract»

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  • Planar, coplanar, and totally planar n-port networks

    Publication Year: 1976 , Page(s): 136 - 141
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (736 KB)  

    The aim of this paper is to provide necessary and sufficient conditions for an n -port network to be planar, coplanar, and totally planar. Generally, a planar graph does not have a unique plane representation, and a combinatorial problem arises in determining whether the graph is planar, coplanar, or totally planar. To avoid the combinatorial complexity the graph is decomposed into 3-connected components called atoms. Since atoms have unique sets of boundaries and coboundaries, our planarity and coplanarity conditions, which are established on atoms, may be easily examined on any plane representations of the atoms. View full abstract»

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  • Video amplifier design based on op amps

    Publication Year: 1976 , Page(s): 169 - 171
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (400 KB)  

    A design procedure for video amplifiers is discussed that will 1) determine if a specific op amp can be used to satisfy the design, 2) minimize the number of stages required, and 3) determine individual stage gains required to satisfy the design. A figure of merit, based on device parameters and the specific amplifier requirements, is developed to aid the design procedure. The design procedure is directed toward practical application in that it minimizes component cost, eliminates trial and error methods, and is directly applicable to worst-case design. View full abstract»

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  • The arc-length method for the computation of characteristic curves

    Publication Year: 1976 , Page(s): 181 - 183
    Cited by:  Papers (10)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (256 KB)  

    The present paper discusses the arc-length method that analyzes frequency response curve of the dynamic nonlinear network, driving-point, and transfer characteristic curves of the nonlinear resistive networks [1]. Although each point of the characteristic curve can be obtained by the numerical approaches [2]-[6] of the nonlinear equation, our arc-length method can trace the curve continuously if only we find a point of the curve. View full abstract»

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  • VCO controlled by one variable resistor

    Publication Year: 1976 , Page(s): 166 - 169
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (376 KB)  

    A multiloop active filter circuit of Kerwin is shown to yield a VCO whose oscillation frequency is conveniently controlled with one variable resistor. Using an FET to obtain the voltage variable resistor, experimental results are shown to agree with the theory developed. View full abstract»

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  • A nonlinear programming approach to optimal design centering, tolerancing, and tuning

    Publication Year: 1976 , Page(s): 155 - 165
    Cited by:  Papers (44)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1088 KB)  

    A theory of optimal worst-case design embodying centering, tolerancing, and tuning is presented. Some simplified problems and special cases are discussed. Projections and slack variables are used to explain some of the concepts. The worst-case tolerance assignment and design centering problem falls out as a special case. Practical implementation requires a reasonable and'relevant number of parameters and constraints to be identified to make the problem tractable. Two circuits, a simple LC low-pass filter and a realistic high-pass filter, are studied under a variety of different problem situations to illustrate both the benefits to be derived from our approach and the difficulties encountered in its implementation. View full abstract»

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  • Analysis of n-port, (n +p)-terminal, degenerate resistance networks

    Publication Year: 1976 , Page(s): 129 - 136
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (904 KB)  

    A degenerate n-port resistance network is one which, as a result of topological constraints, requires an equation to be satisfied among some of the elements of the short-circuit conductance matrix of the network. Biorci and Civalleri have studied and reported results on (n + 2) -terminal degenerate resistance networks. In this paper, we point out an error which they made, and give conditions which partially characterize degeneracy in (n + p) -terminal networks, for p greater than 2, in terms of complementary network graphs that contain complete bipartite subgraphs. View full abstract»

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  • Synthesis of multiterminal communication nets: Finding one or all solutions

    Publication Year: 1976 , Page(s): 141 - 146
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (624 KB)  

    In this paper, the synthesis problem of multi-terminal nets is formulated as a mathematical programming problem. An algorithm based on Balinski's procedure of finding all the vertices of a convex polyhedra is described to determine one or all the feasible solutions of the synthesis problem. View full abstract»

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  • A general form of the O'Neill-Ghausi MFM functions

    Publication Year: 1976 , Page(s): 176 - 178
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (320 KB)  

    Through a generalization of the maximally flat magnitude (MFM) functions proposed by O'Neill and Ghausi a class of MFM driving point functions with a pole at infinity and a prescribed real part as w tends to infinity is derived. These functions can be used in the design of equalizer networks to parasitic reactances and yield a larger gainbandwidth product. View full abstract»

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  • A statistical multiparameter sensitivity measure for notch filters

    Publication Year: 1976 , Page(s): 173 - 176
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (456 KB)  

    A statistical multiparameter measure suited to the analysis and design of notch filters is described. The measure may be used to analyze and optimize the sensitivity performance of second-order notch filters. Sensitivities evaluated using the approximate measure are compared to those obtained from Monte Carlo analysis. The design of minimum sensitivity second-order notch filters is demonstrated. Finally the recent second-order (high-pass) notch realizations of Boctor and Friend et al. (SAB) are compared. View full abstract»

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