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IEE Proceedings G - Circuits, Devices and Systems

Issue 2 • Date Apr 1989

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Displaying Results 1 - 9 of 9
  • Driving-point immittance with equiripple magnitude

    Publication Year: 1989, Page(s):62 - 66
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (312 KB)

    Recurrence relations of the Ln polynomials of class L filters are derived. Using them, it is found that the ratio of the two consecutive odd order monotonic Ln polynomials form a Chebyshev rational function, whose maxima and minima coincide with the zeros of the tabulated orthogonal Legendre polynomials and their derivatives. One of the possible applications of such rational ... View full abstract»

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  • Bootstrap transimpedance amplifier: a new configuration

    Publication Year: 1989, Page(s):57 - 61
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (312 KB)

    In any photodetector application, capacitance is a major factor which limits response time. Decreasing load resistance improves this aspect, but at the expense of sensitivity. In the subsequent amplifier, positive feedback may be used with caution. It is possible to combine the effective stability of negative feedback with the desirable features of the positive type. An alternative approach, the b... View full abstract»

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  • Speed comparison of digital BiCMOS and CMOS circuits

    Publication Year: 1989, Page(s):49 - 56
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (620 KB)

    Today BiCMOS technologies are becoming more and more attractive and offer an interesting alternative to existing technologies. In the paper it will be shown that in digital circuits the bipolar transistor does not necessarily improve BiCMOS speed performance over CMOS in all circumstances. We shall show what conditions are necessary to achieve superior speed and how they can be met. The results de... View full abstract»

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  • Harmonic and intermodulation performance of differential source-coupled pair using scaled MOS transistors

    Publication Year: 1989, Page(s):95 - 98
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (220 KB)

    An empirical formula is presented to represent the relationship between the differential current and voltage of a differential source-coupled pair using scaled MOS transistors. Using this formula, closed-form expressions are obtained for the harmonic and intermodulation components resulting from exciting the differential pair by a multisinusoidal signal. Using these expressions, the effect of scal... View full abstract»

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  • Design of a language for IC mask verification and net extraction

    Publication Year: 1989, Page(s):67 - 78
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (876 KB)

    Describes the design of a language (the Mask Verification Language, or MVL) to interface with a programmable mask analysis system to check technology rules and extract netlists in a low-cost computing environment. The system operates in batch mode, i.e. mask designs are presented to the system, which checks them and reports errors. If there are problems, the mask designer can re-enter the mask edi... View full abstract»

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  • Novel approach to modelling series resonant convertors

    Publication Year: 1989, Page(s):99 - 104
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB)

    A linear steady-state model for the series resonant convertor is derived by recognising that the input voltage and the reflected value of the output voltage can be viewed as square waves with a phase difference between them. This leads to the application of elementary Fourier analysis in deriving values of the various currents and voltages without excessive computation. Examples worked out in deta... View full abstract»

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  • Variability reduction in CMOS operational amplifiers through layout modification

    Publication Year: 1989, Page(s):79 - 83
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (504 KB)

    A variability analysis for a CMOS operational amplifier has been performed by a technique based on the sensitivity information of the performance parameters with respect to the process-component parameters. The variability of the offset voltage has been computed with respect to the threshold voltage. Three-level statistical data of the threshold voltage have been obtained for use in the variabilit... View full abstract»

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  • Millimetre-wave planar oscillator on semi-insulating GaAs substrate

    Publication Year: 1989, Page(s):84 - 86
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (284 KB)

    Design and fabrication of V-band stripline oscillators for pulsed and CW IMPATT diodes on semi-insulating GaAs substrates are described. Maximum output power of 125 mW at 53 GHz and 80 mW at 70 GHz, with an efficiency up to 3%, could be realised for Si and GaAs CW devices, respectively. View full abstract»

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  • Prime-factor algorithm and Winograd Fourier transform algorithm for real symmetric and antisymmetric sequences

    Publication Year: 1989, Page(s):87 - 94
    Cited by:  Papers (2)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (460 KB)

    In the paper, algorithms for computing discrete Fourier transform (DFT) of 1-D real symmetric and antisymmetric sequences, using the prime-factor algorithm (PFA) and the Winograd Fourier transform algorithm (WFTA), are presented. These algorithms are obtained from different factorisations of the Fourier matrix, and it is shown that symmetry conditions exist at each stage which are used to construc... View full abstract»

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