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Electronic Circuits and Systems, IEE Proceedings G

Issue 5 • Date October 1985

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Displaying Results 1 - 14 of 14
  • Test point selection methods for the self-testing based analogue fault diagnosis system

    Publication Year: 1985 , Page(s): 173 - 183
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1202 KB)  

    Two methods for selecting test points of an analogue circuit are presented. The purpose of making such a selection is to increase the testability of the self-testing algorithm which is used to allocate the defective components of a given analogue circuit. Some closed relations between network equations and network topology have been investigated so that the computational effort can be reduced to m... View full abstract»

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  • Design and characterisation of a very low current to frequency convertor

    Publication Year: 1985 , Page(s): 184 - 188
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (512 KB)  

    A current to frequency convertor (CFC), fully integrated in aluminum gate p-channel enhancement/depletion MOS technology, is proposed. It is designed for measuring low level currents (10¿13 ¿10¿8 A). A feedback loop is used to obtain good linearity (better than 5%). Experimentally, the CFC works in the range 5 × 10¿13 ¿5 × 10¿8 A. Some nonlinearity problems are observed and explained in th... View full abstract»

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  • Compensative phase meter with lock-in detection

    Publication Year: 1985 , Page(s): 189 - 192
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (415 KB)  

    A compensative phase meter is described. It consists of two phase detectors, one integrator and one voltage-controlled phase shifter. Its operation is similar to that of a phase locked loop (PLL) except that the voltage-controlled oscillator in the PLL is replaced by a voltage-controlled phase shifter in the phase meter. Unlike other phase meters, no bias of the phase estimate occurs even when the... View full abstract»

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  • Design of finite-duration impulse response digital and charge-coupled device filters with arbitrary attenuation characteristics

    Publication Year: 1985 , Page(s): 193 - 199
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (610 KB)  

    A novel analytic technique is given, for the derivation of finite duration impulse response transfer functions which satisfy arbitrary attenuation characteristics, with or without exact linear phase at all frequencies. The method uses a parameter for the determination of the stopband attenuation at the outset, and the rate of cutoff and the passband performance can be improved by increasing the or... View full abstract»

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  • High-resolution switched-capacitor algorithmic digital-to-analogue convertor

    Publication Year: 1985 , Page(s): 200 - 204
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (631 KB)  

    A new high-resolution switched-capacitor algorithmic digital-to-analogue (D/A) convertor is described. It employs a novel voltage division technique to reduce errors owing to capacitor mismatch. This increases the linearity limit imposed by capacitor mismatch to 16 bits or more. The circuit possesses all the attractive features of the conventional algorithmic D/A convertors. View full abstract»

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  • Local state models for m-dimensional operators

    Publication Year: 1985 , Page(s): 205 - 210
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (552 KB)  

    Local state models have been widely considered for the realisation of 2-dimensional discrete time filters. This paper establishes the scope of local state models and extends this concept to m dimensions and partial differential equation settings. View full abstract»

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  • Two-dimensional convolution using number theoretic transforms without matrix transposition and without overlap

    Publication Year: 1985 , Page(s): 211 - 216
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (637 KB)  

    The necessity of sectioning a large picture to compute a 2 dimensional convolution has many drawbacks, one of which is the size of the optimal sections. Starting from this consideration, it is shown that, if the input image array is a 22u × 22u matrix, the convolution can be computed efficiently using a small length Fermat number transform and, if enough fast memory space is provided, without tra... View full abstract»

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  • On the realisation of asymmetric transmission zeros for crystal filter design

    Publication Year: 1985 , Page(s): 217 - 220
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (480 KB)  

    The design of crystal filters with asymmetric amplitude characteristics is considered. A cascadedsection network is synthesised by the factorisation of the lossless chain matrix, in the lowpass (LP) domain. Special elementary sections, each realising a transmission zero on the j¿-axis, are related to the lower-order matrices extracted. These sections contain LP crystal prototypes where the LP mot... View full abstract»

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  • The inverse problem to matrix polynomial factorisation and its application to circuit design

    Publication Year: 1985 , Page(s): 221 - 224
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (455 KB)  

    The second-order state-space technique is developed to accommodate the active circuit design process in the frequency domain. The concept of an eigenmatrix of linear second order multivariable circuit models uses, for the first time, the matrix polynomial of degree 2 to approach the design procedure on the basis of a given set of scalar frequencies. New theorems for the matrix roots of a matrix po... View full abstract»

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  • Erratum: Generation and design of canonic grounded capacitor variable frequency RC-active oscillators

    Publication Year: 1985
    Save to Project icon | PDF file iconPDF (82 KB)  
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  • Design of precision switched-capacitor generalised integrators and their applications to the synthesis of nonlinear networks

    Publication Year: 1985 , Page(s): 225 - 236
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1333 KB)  

    The paper presents a novel approach to the design of generalised integrators using switched-capacitor techniques. These generalised integrators, which integrate with respect to a dependent variable, can easily be constructed in IC form using MOS technology and possess other attractive features, for instance low cost and precision. Potential applications of the generalised integrators to the synthe... View full abstract»

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  • Frequency transformations for the simple 2-port wave digital filter adaptor chain

    Publication Year: 1985 , Page(s): 237 - 240
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (397 KB)  

    The hardware implementation of wave digital filters, based on cascaded unit element reference filters, has recently been discussed. The filters considered were lowpass filters and bandstop filters with a centre frequency of one quarter of the sampling frequency. In the paper, it is shown that highpass filters and bandpass filters with a similar restriction on the centre frequency can be designed b... View full abstract»

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  • Fault localisation when testing complex circuits

    Publication Year: 1985 , Page(s): 241 - 245
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (815 KB)  

    An approach to state functional diagnoses when testing complex integrated circuits is presented. Such an approach can lead in some cases to low-level fault localisation. Experiments using the capabilities of a realised test system (GAPT test program generator, specific tester), illustrating the efficiency of this approach, are presented. View full abstract»

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  • Book review: Electronic Circuit Analysis: Basic Principles

    Publication Year: 1985
    Save to Project icon | PDF file iconPDF (147 KB)  
    Freely Available from IEEE