IEEE Transactions on Instrumentation and Measurement

Issue 1 • March 1976

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Displaying Results 1 - 20 of 20
  • Table of contents

    Publication Year: 1976, Page(s): 1
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  • [Inside front cover]

    Publication Year: 1976, Page(s): c2
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  • Optical measurement of high electric and magnetic fields

    Publication Year: 1976, Page(s):1 - 7
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2378 KB)

    Electric fields are determined by interferometrically measuring the phase difference introduced between light polarized parallel and perpendicular to the electric field. The phase difference is introduced by nitrobenzene in the electric-field volume. Magnetic fields are determined by interferometrically measuring the phase difference introduced between left and right circularly polarized light by ... View full abstract»

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  • A circle fitting procedure and its error analysis

    Publication Year: 1976, Page(s):8 - 14
    Cited by:  Papers (41)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (967 KB)

    An efficient least squares circle fitting procedure and its general random-error analysis are described. The first-order random errors of the center coordinates and the radius of the fitted circle are discussed in detail. The effect of data point distribution along the circle is investigated, and for an important microwave application (sliding termination measurements) the frequency dependence is ... View full abstract»

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  • A wide-band directional coupler for time-domain measurements

    Publication Year: 1976, Page(s):15 - 17
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1981 KB)

    Describes the design, construction, and testing of a broadside parallel-line directional coupler for 0.4 to 10 GHz. The coupler was built to obtain larger reflected signal levels in the time-domain measurement of well-matched microwave components. It features a 10.75 in (27.3 cm.) tightly coupled uniform parallel-line region to keep internal reflections out of the 2.5-ns measurement time window. U... View full abstract»

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  • Increased frequency capability for a given active filter configuration

    Publication Year: 1976, Page(s):18 - 27
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1497 KB)

    It is shown that the performance of a given active filter configuration is dependent upon the design procedure employed. Consequently, design procedures may be selected to optimize some aspect of the active filter's performance. This paper develops design procedures which minimize the effect of gain bandwidth (GB) upon a given active filter configuration. The root sensitivity with respect to the G... View full abstract»

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  • Further results in the noise-loading analysis of a memoryless nonlinearity characterized by a Taylor series of finite order

    Publication Year: 1976, Page(s):28 - 33
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (705 KB)

    See also ibid., vol.IM-22, p.246-9 (1973). Provides an explicit expression for the noise power ratio (NPR) of the memoryless nonlinearity. This expression generalizes previously available results by allowing: wide-band signals; nonflat frequency-spectrum inputs; and nonrectangular notches. The NPR is expressed as a function of the `unnotched' input spectrum and the notch transfer function. Example... View full abstract»

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  • A possibility of simultaneous logarithmic-linear direct-current measurement

    Publication Year: 1976, Page(s):34 - 43
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1757 KB)

    A description is given of a simple circuit for d.c. measurement in a range of several decades with simultaneous logarithmic and linear indications. Separate mathematical analyses are carried out for the cases of employing diodes and transistors as nonlinear elements. The obtained relations indicate the requirements imposed upon nonlinear elements and operational amplifiers to achieve a desired acc... View full abstract»

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  • Analysis of an ultrasonic spatial locating system

    Publication Year: 1976, Page(s):43 - 50
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1774 KB)

    Describes and analyses an ultrasonic spatial locating system. Based on the transit time of a shock wave produced by a small electric spark, the position of one or more sparks can be determined with respect to a coordinate system. The coordinate system is formed by 3 linear electret microphones arranged orthogonally which detect the arrival of the wave front. A microcomputer is incorporated for sys... View full abstract»

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  • A constant flux rate variable-frequency hysteresis loop generator having wide dynamic range

    Publication Year: 1976, Page(s):50 - 52
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (490 KB)

    The circuit described generates a constant alternating-polarity time-rate-of-change of magnetic or electric flux. Commutation is performed automatically when a prescribed degree of saturation has been attained. The circuit has been operated over the frequency range 1 μHz to 1 kHz. View full abstract»

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  • Optical sensing and size discrimination of moving vehicles using photocell array and threshold devices

    Publication Year: 1976, Page(s):52 - 55
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (964 KB)

    Discusses equipment which can optically sense moving vehicles, and discriminate their sizes. Based on a conceptual consideration on size discrimination, a hardware implementation using a SnO2-Si photocell array and simple electronic circuits is made. The developed equipment can separately count three sizes of moving vehicles along a road. View full abstract»

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  • Optically strobed sampling oscilloscope

    Publication Year: 1976, Page(s):56 - 60
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2699 KB)

    Describes an optically strobed sampling oscilloscope which uses optical pulses from a GaAs laser diode to strobe a Cr-doped GaAs photoconductor which serves as a sampling gate. This sampling gate has been used with a commercial sampling oscilloscope to provide a sampling measurement capability that can measure higher voltages than conventional samplers and does not exhibit strobe pulse kickout. Pr... View full abstract»

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  • A high-speed logarithmic amplifier

    Publication Year: 1976, Page(s):61 - 65
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1045 KB)

    Reports on the improvement of frequency responses of a logarithmic amplifier with a Paterson transdiode connection. The improvement of the response speed has been achieved by using a phase compensation technique. Small- signal response analysis of the logging circuit revealed the effects of a series resistor RP and a parallel capacitor CP on the response of the ... View full abstract»

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  • Statistical study of phase fluctuations and oscillator stability

    Publication Year: 1976, Page(s):66 - 75
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1856 KB)

    The stability of amplitude-stabilized oscillators is limited by microscopic or macroscopic random phase fluctuations. The authors study the relation between phase and instantaneous frequency and deduce that in general the phase is a process with stationary increments. Some properties of such processes are presented, and in particular the cases where the phase cannot be stationary is discussed. To ... View full abstract»

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  • A simple circuit of a crystal oscillator and its application to a high-resolution NMR spectrometer

    Publication Year: 1976, Page(s):76 - 78
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (543 KB)

    Describes a simple circuit of a crystal oscillator operating at frequencies from several megahertz to a hundred megahertz with a frequency stability of one part to 108 constructed using a dual gate MOSFET. This RF transmitter accompanied by an RF-tuned receiver can be used as a high-resolution NMR spectrometer and as a precise Gaussmeter. View full abstract»

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  • Switching-mode absolute-value amplifier and its applications

    Publication Year: 1976, Page(s):79 - 83
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1480 KB)

    Proposes methods of absolute-value and variable-phase operations using switching techniques. These methods show high efficiency and characteristics suitable for use in very-low-frequency regions due to its sampling effects. This paper introduces the basic principle, theoretical analysis, and characteristics of the switching-mode absolute-value amplifier and presents the realization of a variable-p... View full abstract»

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  • The calibration and use of directional couplers without standards

    Publication Year: 1976, Page(s):84 - 89
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (985 KB)

    Basic principles and suggested techniques are presented for calibrating nonideal four-port couplers without standards. Under the assumption that the complex ratio of the side-arm voltages are known, all the parameters, except one of the directional couplers, can be determined without recourse to known values of impedances, shorts, opens, etc. Also, the surprising number of measurements that can be... View full abstract»

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  • Comments on “A new waveguide flow calorimeter for levels of 1–20 W”

    Publication Year: 1976, Page(s): 89
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    See also ibid., vol.IM-23, p.414-20, (Dec. 1974). Discusses the paper on a dual-flow microwave calorimeter with very high precision and accuracy. View full abstract»

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  • CORRESPONDENCE 
  • Correction to “Isolation amplifier with combined magnetic and optical coupling”

    Publication Year: 1976, Page(s): 89
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    In the above-named paper there were two misprints. The first appears in (1), in which the minus sign should be a multiplication sign. The second is in the formula page 116, where + must be read instead of ÷. View full abstract»

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  • Contributors

    Publication Year: 1976, Page(s):90 - 92
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    Freely Available from IEEE

Aims & Scope

Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief

SHERVIN SHIRMOHAMMADI
School of EECS
University of Ottawa
800 King Edward Ave.
Ottawa, Ontario
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