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IEE Proceedings G - Circuits, Devices and Systems

Issue 1 • Date Feb. 1989

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Displaying Results 1 - 7 of 7
  • Compensation improvements in RC-active integrators

    Publication Year: 1989, Page(s):1 - 8
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (655 KB)

    The gain and phase errors in high quality integrator circuits are discussed, and the relative merits of inverting and noninverting structures are established. It is shown that the normally positive gain and phase errors in noninverting integrators can be reduced to zero or negative values. Analytical and experimental evidence is presented to demonstrate that the sensitivity to uniform changes in t... View full abstract»

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  • Feasibility of analogue computation for image processing applications

    Publication Year: 1989, Page(s):9 - 13
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (642 KB)

    A processing cell consisting of analogue devices is proposed for the implementation of a 2D weighted averaging algorithm for image processing applications. The major component used is the MOS transistor in CMOS configuration, implementable in VLSI technology. Representative simulation results are given, demonstrating the accuracy of computation and high performance achieved by the proposed circuit... View full abstract»

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  • Digital filter sets for frequency shift keyed modems

    Publication Year: 1989, Page(s):14 - 18
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (436 KB)

    An efficient structure for the digital filter pair required in a noncoherent FSK demodulator consists of a common receive filter cascaded with two separate discriminator filters. The authors describe two numerical procedures aimed at achieving approximately matched filter transfer functions for such a structure. The first procedure is a modification of an earlier technique used to equalise the gro... View full abstract»

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  • On the canonical state-space realisation of 3-D discrete systems

    Publication Year: 1989, Page(s):19 - 31
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (595 KB)

    A procedure is presented for deriving a canonical state-space model of the Roesser type for linear SISO three-dimensional systems. This model is analogous to a well established 2-dimensional model and has equal or lower dimensionality than other 3-D models previously reported. The proposed model can almost be derived by inspection. The proposed technique is successfully applied to two examples.< View full abstract»

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  • Design of third-order notch RC-active filter sections

    Publication Year: 1989, Page(s):32 - 37
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (510 KB)

    Two third-order RC-active filter sections with finite transmission zeros, derived from two commonly used single-amplifier biquads, are examined, and a simple iterative procedure for their design is described, which preserves the low-sensitivity performances of the embedded biquads. Next, the third-order notch section proposed by Boctor (1975) is considered and a criterion for its low-sensitivity d... View full abstract»

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  • Timing simulator by waveform relaxation considering the feedback effect

    Publication Year: 1989, Page(s):38 - 42
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (402 KB)

    Timing simulators are widely used nowadays for analysing large scale MOS digital circuits. However, they have several limitations such as nonconvergence and/or inaccuracy for circuits containing tightly coupled feedback elements or loops. The authors describe a new timing simulator that aims at solving these problems. The algorithm employed is based on the waveform relaxation method and exploits t... View full abstract»

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  • Zero-amplifier sensitivity criterion

    Publication Year: 1989, Page(s):43 - 48
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (417 KB)

    The conditions under which composite amplifiers exhibit zero sensitivity to changes in the operational amplifier time constants are examined. A physically based sensitivity criterion is proposed that allows the sensitivity classification of composite amplifiers to be determined by inspection. Canonic forms for inverting and noninverting composite amplifiers offering zero amplifier sensitivity are ... View full abstract»

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