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Circuits and Systems, IEEE Transactions on

Issue 4 • Date April 1976

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Displaying Results 1 - 9 of 9
  • The design of multidimensional FIR digital filters by phase correction

    Publication Year: 1976 , Page(s): 185 - 199
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2262 KB)  

    The present paper presents a new technique for the design of multidimensional FIR digital filters. Given the desired amplitude respinse, the truncation error, of a low-order approximation to a high-order filer" is iteratively decreased by varying the phase response. Convergence of the iterative algorithm is discussed. Examples illustrating the use of the technique are included. The design method is formulated for twodimensional filters, however filters of any dimension may be designed by this technique. View full abstract»

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  • The morphological approach to network and circuit design

    Publication Year: 1976 , Page(s): 239 - 242
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (364 KB)  

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  • A simple method to determine the characteristic function f(\lambda ) = |\lambda I - A| by discrete Fourier series and fast Fourier transform

    Publication Year: 1976 , Page(s): 242
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (64 KB)  

    A formula to determine the characteristic function of N x N matrix by discrete Fourier series is given. View full abstract»

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  • Regionalization: A method for generating joint density estimates

    Publication Year: 1976 , Page(s): 229 - 234
    Cited by:  Papers (13)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (640 KB)  

    Regionalization is a method by which the joint probability density for two or more jointly distributed random variables can be estimated when only their respective frequency distributions or intervariable tracking specifications are known. The method can be used to improve the performance of circuit analysis programs in two ways: by weighting the samples to reduce the number of trials required for a statistical analysis, and by partitioning the output space in order to determine the input combinations that are most likely to cause failure. View full abstract»

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  • An efficient method for computer aided noise analysis of linear amplifier networks

    Publication Year: 1976 , Page(s): 235 - 238
    Cited by:  Papers (220)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (512 KB)  

    A method for computer aided noise analysis is presented which is based on a description of noise by means of correlation matrices. The method is a two-port analysis and it is, therefore, applicable to circuits which are composed of simple two-ports with known noise performance. The correlation matrix concept holds two main advantages over other methods of noise analysis. Partially correlated noise sources can be treated without any loss of efficiency and information concerning minimum noise figure and noise matching conditions is obtained. View full abstract»

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  • Correlated noise due to roundoff in fixed point digital filters

    Publication Year: 1976 , Page(s): 204 - 211
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (776 KB)  

    It is shown that correlation between quantization error sources in finite precision fixed point digital filters can be significant even when a filter is driven by a random input. It is demonstrated that correlation coefficients can be estimated in terms of relative values of multiplying constants and the filter structure. A general formulation of filter output noise is developed in terms of the covariance matrices of the error sources. Thus the effects of correlation can be taken into account analytically for purposes of design and comparison. View full abstract»

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  • Theory and applications of resistor, linear controlled resistor, linear controlled conductor networks

    Publication Year: 1976 , Page(s): 222 - 228
    Cited by:  Papers (12)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (784 KB)  

    An analogy is pointed out between R, \pm L, \pm C networks and networks of resistors, linear controlled resistors, and linear controlled conductors. Applications of R, \pm LCR, \pm LCG networks in realizing nonlinear curves are discussed, and experimental corroboration of the basic ideas is included. View full abstract»

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  • A laboratory for digital filter instruction

    Publication Year: 1976 , Page(s): 212 - 221
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2552 KB)  

    To appreciate adequately digital filtering with one semester or less of class work, a laboratory must be provided. Simulation on a general-purpose digital computer does not give an adequate feel for the processing of signals of various waveshapes. If the student must build the filters from commercially available IC packages there is not enough time in one semester to build more than the simplest filter. Described herein is a hardware laboratory which provides the student with hardware components that perform the mathematical operations that are normally used in digital filter equations. The equipment is such that the student begins with simple filters, proceeds to more complicated signal processing, and then learns how to share hardware to reduce costs. Finally, a highly multiplexed computer controlled filter is provided for the student to design and test high-order filters. Guidelines for those who wish to build such a laboratory are given. View full abstract»

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  • Variable cutoff linear phase digital filters

    Publication Year: 1976 , Page(s): 199 - 203
    Cited by:  Papers (54)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (528 KB)  

    This paper discusses an approach to the Implementation of a linear phase finite impulse response filter for which the cutoff frequency is controlled through a small number of parameters. The approach is based on a transformation implemented by replacing a subnetwork in a prototype network. View full abstract»

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