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Proceedings of the IEEE

Issue 8 • Date Aug. 1983

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Displaying Results 1 - 25 of 26
  • [Front cover and table of contents]

    Publication Year: 1983 , Page(s): c1
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  • The special section on switched-capacitor circuits

    Publication Year: 1983 , Page(s): 915 - 916
    Cited by:  Patents (102)
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  • Scanning the issue

    Publication Year: 1983 , Page(s): 915
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  • A tomographic formulation of spotlight-mode synthetic aperture radar

    Publication Year: 1983 , Page(s): 917 - 925
    Cited by:  Papers (207)  |  Patents (18)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (859 KB)  

    Spotlight-mode synthetic aperture radar (spotlight-mode SAR) synthesizes high-resolution terrain maps using data gathered from multiple observation angles. This paper shows that spotlight-mode SAR can be interpreted as a tomographic reeonstrution problem and analyzed using the projection-slice theorem from computer-aided tomograpy (CAT). The signal recorded at each SAR transmission point is modeled as a portion of the Fourier transform of a central projection of the imaged ground area. Reconstruction of a SAR image may then be accomplished using algorithms from CAT. This model permits a simple understanding of SAR imaging, not based on Doppler shifts. Resolution, sampling rates, waveform curvature, the Doppler effect, and other issues are also discussed within the context of this interpretation of SAR. View full abstract»

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  • Principles of operation and analysis of switched-capacitor circuits

    Publication Year: 1983 , Page(s): 926 - 940
    Cited by:  Papers (17)  |  Patents (102)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1366 KB)  

    The principles involved in switched-capacitor circuit operation are examined with emphasis on physical insight rather than mathematical abstraction, albeit without sacrificing rigor, generality, and accuracy. Detailed time waveforms are extensively used. Input-output difference equations are discussed. After a complete time domain description, it is shown that a frequency-domain description becomes trivial through the use of phasors; z-transforms are avoided. Equivalent systems are derived. Analysis techniques are developed in parallel with the investigation of circuit properties. View full abstract»

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  • Switched-capacitor circuit design

    Publication Year: 1983 , Page(s): 941 - 966
    Cited by:  Papers (86)  |  Patents (118)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2131 KB)  

    Circuit design techniques are described for switched-capacitor filters, modulators, rectifiers, detectors, and oscillators. The applications of these circuits in telecommunications, speech processing, and other signal-processing systems are also briefly discussed. View full abstract»

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  • Technological design considerations for monolithic MOS switched-capacitor filtering systems

    Publication Year: 1983 , Page(s): 967 - 986
    Cited by:  Papers (63)  |  Patents (125)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2293 KB)  

    In this paper, various technological and topological considerations for the design of monolithic MOS switched-capacitor (SC) filtering systems are described. The properties of the passive and active devices typically available in depletion-load NMOS and CMOS technologies are presented as they relate to various SC peformance parameters. Layout techniques for improving specific performance parameters are also given. An overview of MOS operational-amplifier design emphasizes technological considerations in the design of high-performance SC systems. Finally, several important techniques are reviewed for maximizing dynamic range in SC circuits. View full abstract»

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  • A tutorial on computer-aided analysis of switched-capacitor circuits

    Publication Year: 1983 , Page(s): 987 - 1005
    Cited by:  Papers (23)  |  Patents (101)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1771 KB)  

    In this paper, various formulation techniques for analyzing switched-capacitor circuits have been described and compared. Some basic pcoperties of the time-, z-, and frequency-domain solutions have been presented. Analysis techniques for handling nonideal op-amps, switch resistances, and noise and distortion effects are discussed. Methods for sensitivity analysis have been briefly mentioned and, finally, an overview of computer-aided analysis techniques has been given. View full abstract»

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  • Active compensation in the switched-capacitor biquad

    Publication Year: 1983 , Page(s): 1008 - 1009
    Cited by:  Patents (102)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (199 KB)  

    One of the limiting factors in the performance of high-ωpand high-Qpactive filters is the finite frequency-dependent gain characteristics of operational amplifiers (op-amps). Investigated here is a simple compensation scheme to reduce the sensitivity of the performance of a switched-capacitor biquad to the finite gain-bandwidth product of the op-amps. Theoretical and experimental results show that the scheme is very useful. View full abstract»

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  • Comments on "On the construction of a digital transfer function from its real part on unit circle"

    Publication Year: 1983 , Page(s): 1009 - 1010
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (177 KB)  

    It is pointed out that, in the procedure given by Vaidyanathan and Mitra for obtaining a digital transfer function from its real part on the unit circle, forming the intermediate polynomials mi(z) and ni(z), from similarity with the corresponding analog problem, is an unnecessary complication, and that the scaling constant can be determined at the stage of determining the denominator polynomial itself. These points are illustrated by an example. View full abstract»

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  • Linear coefficients of equation of motion of a drift electron

    Publication Year: 1983 , Page(s): 1010 - 1012
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB)  

    A simple method of calculating the friction coefficient and the restraining coefficient of a linear equation of motion of a drift electron in an isotropic medium is presented. This new method is applied for an electron in the high-field domain in a magnetically biased Gunn diode as an example. View full abstract»

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  • Performance of MSK spread spectrum systems

    Publication Year: 1983 , Page(s): 1012 - 1013
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    An exact expression for the processing gain of a direct sequence spread spectrum communication system using MSK spreading is derived. This extends previous results for systems using QPSK spreading. View full abstract»

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  • Focusing and scanning of ultrasound by spatial amplitude modulation

    Publication Year: 1983 , Page(s): 1013 - 1015
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (295 KB)  

    Spatial amplitude modulation (SAM) is proposed as an alternative to spatial phase modulation (SPM) techniques currently emplayed in most ultrasonic imaging systems. A simple implementation of a SAM-based imaging system using an optoacoustic transducer (OAT) is presented. View full abstract»

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  • A simplified method of analysis for subsynchronous resonance in series-compensated EHV transmission lines

    Publication Year: 1983 , Page(s): 1015 - 1016
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    This letter presents a novel approach, based upon Newton's method, for the analysis of the phenomenon of subsynchronous resonance (SSR) in series-compensated EHV transmission lines. The method of analysis will be found useful due to its reliability and high speed of computation. An example is included to illustrate the new approach. View full abstract»

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  • Optimal scheduling of hydro-thermal power systems under shortage

    Publication Year: 1983 , Page(s): 1016 - 1017
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (231 KB)  

    The problem of optimal scheduling of the generation of a hydro-thermal power system that is faced with a shortage of energy is studied. The deterministic version of the problem is first analyzed, and the results are then extended to cases where the loads and the hydro inflows are random variables. View full abstract»

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  • Negative frequency aspects of doubly fed machine analysis

    Publication Year: 1983 , Page(s): 1017
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (121 KB)  

    Negative frequencies occur in the analysis of doubly fed machines. The properties of negative-frequency quantities are investigated and volt-amp relationships described, for both single-phase and three-phase circuits. Transformations of negative-frequency quantities to equivalent positive-frequency quantities are considered. A general equivalent circuit of the doubly fed machine is described which is directly applicable over the entire operating range. View full abstract»

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  • Engineering intelligent systems

    Publication Year: 1983 , Page(s): 1018 - 1019
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  • Communication protocol modelling

    Publication Year: 1983 , Page(s): 1019 - 1020
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  • New concepts in multi-user communication

    Publication Year: 1983 , Page(s): 1019
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  • Automatic control systems (fourth edition)

    Publication Year: 1983 , Page(s): 1020
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  • Practical techniques of electronic circuit design

    Publication Year: 1983 , Page(s): 1020
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  • Analog filter design

    Publication Year: 1983 , Page(s): 1020 - 1021
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  • Stability of nonlinear systems

    Publication Year: 1983 , Page(s): 1021 - 1022
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  • Mathematical foundations in engineering and science

    Publication Year: 1983 , Page(s): 1021
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  • Book alert

    Publication Year: 1983 , Page(s): 1022 - 1024
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The most highly-cited general interest journal in electrical engineering and computer science, the Proceedings is the best way to stay informed on an exemplary range of topics.

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Meet Our Editors

Editor-in-Chief
H. Joel Trussell
North Carolina State University