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Volume 127
Issue 2
IEE Proceedings G (Electronic Circuits and Systems)
Volume 127, Issue 2, April 1980
Volumes & issues:
Volume 127, Issue 2
April 1980
Fast synthesised cyclic-parallel analogue- digital convertor
- Author(s): J.V. Woods and R.N. Zobel
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, p. 45 –51
- DOI: 10.1049/ip-g-1.1980.0008
- Type: Article
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A circuit technique is described for parallel synthesis of the folded waveform required for input to the parallel convertor of a cyclic-parallel digitiser. This has a significant speed advantage over the serial cyclic approach and does not suffer from an overrange problem. Cost is lower than for an all-parallel approach, and the system has potential development in both very-high-speed and higher-resolution directions. The development of single-chip high-speed-flash convertors will make the cyclic-parallel type of convertor attractive by virtue of increased resolution with lower part count and cost, and by reducing the capacitance driving problem of the all-parallel-approach. Some static and dynamic performance figure are presented for a prototype convertor.
Nonlinear temporal filter for television picture noise reduction
- Author(s): T.J. Dennis
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, p. 52 –56
- DOI: 10.1049/ip-g-1.1980.0009
- Type: Article
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52
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A conventional recursive interframe lowpass filter for 625 line 5.5 MHz monochrome television is modified so that its attenuation of frame differences is instantaneously dependent on their amplitude. This results in improved rendition of motion when compared with the original design. Performance is assessed by objective measurement of noise attenuation for a range of input noise levels and nonlinear characteristics, and by subjective opinion tests on pictures containing noise and movement.
Simplified method for synthesising m.q.f. filters
- Author(s): R. Lajacono
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, p. 57 –60
- DOI: 10.1049/ip-g-1.1980.0010
- Type: Article
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The synthesis of m.q.f. filters is reduced to the application of direct formulas. The proposed method is based on a simplification of the elastic equation describing the coupling of two electrode pairs.
Book review: Circuit and System Theory
- Author(s): J.O. Scanlan
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, page: 60 –60
- DOI: 10.1049/ip-g-1.1980.0011
- Type: Article
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60
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Actively peaked broadbanded monolithic amplifier
- Author(s): J. Choma
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, p. 61 –66
- DOI: 10.1049/ip-g-1.1980.0012
- Type: Article
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61
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Shunt-peaked compensation, as a means of broadbanding an integrated bipolar amplifier stage exhibiting a dominant-pole response, is definitively analysed and assessed. Two sets of design equations, one pertaining to dominant-pole cancellation and the other addressing approximately maximally flat magnitude response, are derived. The design-oriented analysis is rendered germane to monolithic circuit realisation by exploiting the inherently inductive nature of the emitter input impedance of a bipolar junction transistor.
Calculator-aided evaluation of integrated n-m.o.s. operational amplifiers
- Author(s): N. Saleh and S. Tewfick
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, p. 67 –74
- DOI: 10.1049/ip-g-1.1980.0013
- Type: Article
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In this paper, the results are given of an investigation of first-generation integrated n-m.o.s. operational amplifiers. Calculator-aided simulation is used to study the performance and limitations of the stages and the overall amplifier. Quiescent conditions, differential-mode gain and common-mode gain are investigated. The transfer function of the overall amplifier is determined. The slew rate has been investigated, taking into consideration the complicated open-loop gain and the nonlinearity of the amplifier's different stages. Finally, an improvement in the circuit design of integrated n-m.o.s. operational amplifiers is suggested. This is especially suited to amplifiers fabricated by advanced technologies.
Termination of lossless coupled transmission lines subjected to a transient stimulus
- Author(s): D. Scurr and P.L. Moran
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, p. 75 –80
- DOI: 10.1049/ip-g-1.1980.0014
- Type: Article
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75
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The general equations for the analysis of transient waveforms on a system of coupled lossless transmission lines are presented. Using these equations, the matching networks required to minimise the effects of crosstalk and reflections are derived. Alternatively, it is possible to establish the degree of crosstalk and reflection that will occur for a given matching network. Results of a computer simulation of a system of coupled transmission lines are presented to illustrate the effects of various matching conditions
Signal-flow-graph analysis by decomposition method
- Author(s): J. Starzyk
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, p. 81 –86
- DOI: 10.1049/ip-g-1.1980.0015
- Type: Article
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p.
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The paper concerns a new approach to the topological analysis of linear networks. It gives a brief description of the hierarchic decomposition method (i.e. multiple decomposition of a decomposed network) which can be applied in computer analysis of networks. It is shown that this method in computer applications considerably reduces the number of operations needed, and thus the computer time. The applications of the method to the analysis of signal-flow graphs have been pointed out. The algorithms of analysis, and some advantages of this method, are described briefly at the end of the paper.
Transmission matrix of switched-capacitor ladder networks: application in active-filter design
- Author(s): G.S. Moschytz and B.J. Hosticka
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, p. 87 –98
- DOI: 10.1049/ip-g-1.1980.0016
- Type: Article
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It has recently been shown how switched-capacitor networks can be analysed in the z-plane using 4-port equivalent circuits. The papershows how the transmission matrix of an equivalent 4-port can be obtained, and in what circumstances it can be simplified into the matrix of a 2-port network. It is also shown how the resulting matrix analysis simplifies active-RC- filter simulation using active s.c. networks.
Inverting integrator with extended time constant using grounded capacitor
- Author(s): S.K. Saha
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, p. 99 –100
- DOI: 10.1049/ip-g-1.1980.0017
- Type: Article
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Erratum: Time jitter in self-timed regenerative repeaters with correlated transmitted symbols
- Author(s): D. Munoz-Rodriguez and K.W. Cattermole
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, page: 100 –100
- DOI: 10.1049/ip-g-1.1980.0018
- Type: Article
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Erratum: Two-dimensional analysis of tapered distributed networks using finite elements
- Author(s): A.J. Walton ; B.J. Marsden ; P.L. Moran ; N.G. Burrow
- Source: IEE Proceedings G (Electronic Circuits and Systems), Volume 127, Issue 2, page: 100 –100
- DOI: 10.1049/ip-g-1.1980.0019
- Type: Article
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