System Maintenance:
There may be intermittent impact on performance while updates are in progress. We apologize for the inconvenience.
By Topic

Circuits and Systems, IEEE Transactions on

Issue 10 • Date October 1978

Filter Results

Displaying Results 1 - 10 of 10
  • Editorial

    Publication Year: 1978 , Page(s): 829
    Save to Project icon | Request Permissions | PDF file iconPDF (96 KB)  
    Freely Available from IEEE
  • Comments on "The Factorization Problem for Time-Limited Functions and Trignometric Polynomials

    Publication Year: 1978 , Page(s): 889
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (125 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Corrections to 'Block Implementation of Recursive Digital Filters-New Structures and Properties'

    Publication Year: 1978 , Page(s): 890
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (35 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Cascade synthesis of a class of multivariable positive real functions

    Publication Year: 1978 , Page(s): 871 - 878
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (928 KB)  

    Necessary and sufficient conditions are developed for the realization of a multivariable positive real function (MPRF) as the driving-point function of an extracted single-variable lossless two-port with a termination whose driving-point function is an MPRF in the rest of the variables as the load. Conditions are also obtained for the case when an extraction of a lossless two-port is possible in either of the two variables P_{i} or p_{j} . View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Linear transformation active filters

    Publication Year: 1978 , Page(s): 845 - 852
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (864 KB)  

    An approach is presented in this paper for the design of active filters from doubly terminated lossless ladder filters. The method relies-on-the-lnear transformation of port variables from the V-I domain to a new domain in which the filter is realized actively. The resulting active filters are referred to as linear transformation active (LTA) filters. The transformations are applied on an element-by-element basis thus producing a systematic and effective way of achieving new active structures while others like the leapfrog and the wave active filter structures appear as special cases. Examples are presented in the paper to show the efficiency of the method and the importance of the results. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Stability analysis of a transmission line with variable parameters

    Publication Year: 1978 , Page(s): 878 - 885
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (888 KB)  

    In this paper, we have presented very simple verifiable criteria for stability of a transmission line with variable (both in time and space) parameters. The system is described by a pair of hyperbolic partial differential equations with nonhomogeneous boundary conditions representing the inputs to the system and free terms representing load on the line. We have presented Lyapunov-type stability criteria indicating the conditions under which a transmission line struck by lightning or other switching surges will return to the original state or attain a new state. We have also presented two types of stability in the bounded-input bounded-output sense, one giving L_{\infty } . stability and the other giving L_{2} stability. Comments as regards implication of these results are placed in the text immediately after each result. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optimal centering, tolerancing, and yield determination via updated approximations and cuts

    Publication Year: 1978 , Page(s): 853 - 871
    Cited by:  Papers (46)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1896 KB)  

    This paper presents a new approach to optimal design centering, the optimal assignment of parameter tolerances and the determination and optimization of production yield. Based upon multidimensional linear cuts of the tolerance orthotope and uniform distributions of outcomes between tolerance extremes in the orthotope, exact formulas for yield and yield sensitivities, with respect to design parameters, are derived. The formulas employ the intersections of the cuts with the orthotope edges, the cuts themselves being functions of the original design constraints. Our computational approach involves the approximation of all the constraints by low-order multidimensional polynomials. These approximations are continually updated during optimization. Inherent advantages of the approximations which we have exploited are that explicit sensitivities of the design performance are not required, available simulation programs can be used, inexpensive function and gradient evaluations can be made, inexpensive calculations at vertices of the tolerance orthotope are facilitated during optimization and, subsequently, inexpensive Monte Carlo verification is possible. Simple circuit examples illustrate worst case design and design with yields of less then 100 percent. The examples also provide verification of the formulas and algorithms. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An N-way hybrid circuit divider

    Publication Year: 1978 , Page(s): 886 - 887
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (208 KB)  

    This article briefly describes a lumped element N-way hybrid circuit divider with application to HF radio communications. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On lossless bandpass ladder networks

    Publication Year: 1978 , Page(s): 887 - 889
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (296 KB)  

    An algorithm for determining the B continued fraction and, hence, the values of elements of a lossless bandpass (band-elimination) ladder network from its state space description is presented. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multiple-amplifier RC-active filter design with emphasis on GIC realizations (Invited Paper)

    Publication Year: 1978 , Page(s): 830 - 845
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1864 KB)  

    The use of more than one amplifier to realize an RC-active filter is now economically viable because of the relatively low cost of high-performance operational amplifiers. In this review article, multipleamplifier RC-active synthesis and design techniques are considered. Multiple-amplifier circuits are described that use generalized immittance converters or integrators to realize low-sensitivity high-quality biquadratic circuits and active ladder circuits. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.