IEEE Transactions on Instrumentation and Measurement

Issue 1 • Feb. 1970

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Displaying Results 1 - 23 of 23
  • [Front cover]

    Publication Year: 1970, Page(s): c1
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1970, Page(s): c2
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  • Table of contents

    Publication Year: 1970, Page(s): 1
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  • MOS-FET Analyzer

    Publication Year: 1970, Page(s):2 - 5
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2765 KB)

    The purpose of the analyzer is to save time and effort in determining the following basic MOS-FET (metal-oxide-semiconductor field-effect transistor) parameters: the performance factor ß, the corresponding threshold voltage VGS(T), and the transconductance gm. The MOS-FET analyzer comprises a square-root calculator whose output is displayed on the x-y system of a scope, and thereby offers a reado... View full abstract»

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  • A Pulsed GaAs Laser System for Semiconductor Carrier Lifetime Measurements

    Publication Year: 1970, Page(s):6 - 9
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1686 KB)

    An electronic system is described for controlling a semiconductor laser, which is convenient for measuring semiconductor carrier lifetimes of 500 ns or greater by the photoconductive decay method with the laser providing the sample illumination. Particular attention is given to the circuit of the power pulse generator, which was designed to operate the laser above threshold and to provide a means ... View full abstract»

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  • An Accurate Delay-Time Measuring Equipment in the 50-GHz Region

    Publication Year: 1970, Page(s):9 - 14
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2655 KB)

    An accurate delay-time measuring equipment operating in the 50-GHz region has been developed. The equipment can measure wide-band delay-time characteristics of millimeter wave component and waveguide line. Sweep frequency range is variable from 0 to 1.5 GHz at any of the 46 to 52 GHz. The measurement method employs the usual comparison method and a newly developed rapid automatic switching method.... View full abstract»

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  • A Microwave Interferometer for Wide-Band Measurements of Complex Transmission Coefficients

    Publication Year: 1970, Page(s):14 - 17
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3120 KB)

    A wide-band (8.2-12 GHz) microwave interferometer was developed to measure the complex transmission coefficient of samples inserted in a waveguide system. Amplitude A and phase shift ϕ of a signal are presented either as A sin ϕ, A cos ϕ versus frequency, or in polar coordinate form Aeiϕ as frequency is swept. The attenuation range of measurement is 0-50 dB; phase s... View full abstract»

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  • An Evaluation of the "Back-to-Back" Method of Measuring Adaptor Efficiency

    Publication Year: 1970, Page(s):18 - 22
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (915 KB)

    The problem of adaptor evaluation is of considerable interest in the UHF and microwave art where, because of the several different types of transmission line in common use, there is a frequent need to extend an established measurement capability in one type of line to other types of lines, e.g., from rectangular waveguide to coax. In power and noise calibrations, it is the adaptor efficiency which... View full abstract»

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  • Precision Microwave Waveguide Loss Calibrations

    Publication Year: 1970, Page(s):23 - 25
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2247 KB)

    Precision microwave insertion-loss measurements are an important part of the evaluation and calibration of the Jet Propulsion Laboratory-NASA low-noise deep-space communication systems. A study of cooled transmission-line components was initiated with the Rantec Corporation in July 1966. The preliminary work at Rantec involved WR 430 waveguide insertion-loss calibrations using a microwave cavity Q... View full abstract»

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  • Nonlinearity Minimums and Maximums of a Phase-Sensitive Detection System

    Publication Year: 1970, Page(s):25 - 27
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (565 KB)

    Two generalized criteria for minimums and maximums of essential nonlinearity of a phase-sensitive detection system are presented. Minimums and maximums are calculated and plotted by a digital computer over a wide dynamic range of operating conditions, assuming that the input signal is in the narrow-band Gaussian noise. View full abstract»

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  • A Wide-Range CW Power Measurement Technique

    Publication Year: 1970, Page(s):28 - 34
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1250 KB)

    An accurate power measurement technique is described, which makes possible the determination of the net power delivered to a load of arbitrary impedance over a wide power range. A standard power meter is employed to fix a reference power level. Subsequent measurements consist of dimensionless ratios that can be obtained from precision attenuators. The method is applicable to a very wide range of f... View full abstract»

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  • Wide-Band High-Resolution Determination of Absolute Frequency

    Publication Year: 1970, Page(s):34 - 45
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4463 KB)

    In the determination of absolute frequency, conventional approaches have been either frequency or period counting, both of which are subject to resolution-bandwidth tradeoffs and frequency distortion. This paper presents a new technique that avoids such tradeoffs and separates the filtering and sampling functions, giving greater flexibility and enabling one to work down to the limits established b... View full abstract»

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  • New Standard of Electric Field Strength

    Publication Year: 1970, Page(s):45 - 51
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2114 KB)

    A new technique is presented for establishing a standard of electric field strength using a highly conducting sphere. An analysis is made to determine the current on the sphere as a function of the electric field strength of an incident plane wave. A method of measuring that current using electronic circuitry and an optical indicator within the sphere is described, and an intercomparison is made w... View full abstract»

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  • Electronic Load-Angle Measurement with Unusually Fast Response

    Publication Year: 1970, Page(s):51 - 56
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2426 KB)

    A dc output voltage proportional to the phase angle between any two accessible points in an ac system is generated by the circuitry described in this paper. The transient response of the output voltage involves delays of less than one ac cycle, which represents an advance upon established techniques, and the linearity is of the order of 1 percent. The device has been used for alternator load-angle... View full abstract»

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  • A New DC-AC Digital Power and Energy Meter

    Publication Year: 1970, Page(s):57 - 61
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1047 KB)

    A new power and energy-to-frequency converter is described. Its operation is based on two closed-loop mean-square value-to-frequency converters of new conception in which a direct digital feedback is used. Error analysis is carried out and performance data of an experimental circuit using indirectly heated thermistors are given. The instrument is suitable for digital power measurement for both dc ... View full abstract»

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  • Measurement of Electrode Erosion during High-Voltage Vacuum Breakdown

    Publication Year: 1970, Page(s):61 - 64
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (973 KB)

    This paper is concerned with the measurement of the mass of electrode material released by the electrodes during a high-vacuum breakdown. The techniques used in the experiment described in this paper for quantitative measurement of material released from the electrodes are neutron activation analysis and gamma-ray spectrometry. The method permits determination of the small masses released during t... View full abstract»

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  • Effect of Telemetry Channel Noise on the Output of Accelerometers

    Publication Year: 1970, Page(s):65 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (790 KB)

    The noise in the FM telemetry channel may decrease significantly the accuracy of accelerometer readings. The noise effects in both digital and analog accelerometers are examined in this paper. A maximum-likelihood estimate of the accelerometer output is made and the mean-square error of the estimate is evaluated. It is shown that the digital accelerometer is superior to the analog accelerometer in... View full abstract»

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  • Programmable Current Regulator for High-Voltage Operation

    Publication Year: 1970, Page(s):68 - 73
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2114 KB)

    A current regulator for the operation of gas discharges is described, capable of delivering peak currents up to 1 ampere and average currents of up to 0.5 ampere with voltage excursions to 9 kV. Completely floating two-terminal operation accomodates different load configurations. By means of externally supplied timing pulses the output current can be programmed to generate rectangular or trapezoid... View full abstract»

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  • A New Method of Measuring Dielectric Property of Very-High-Loss Materials at High Frequencies

    Publication Year: 1970, Page(s):73 - 77
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (950 KB)

    This paper presents a circuit system functioning as a capacitance meter suitable for very-high-loss material with a wide range of application in various fields of scientific research and industrial operation. The minimum equivalent parallel resistance of the specimen to be measured reaches as low as 50 ohms and the measuring range of capacitance is from about 0.1 ~ 1000 pF at 2 MHz. Some experimen... View full abstract»

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  • Solid/Liquid State Sensor

    Publication Year: 1970, Page(s):78 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1422 KB)

    A common problem in industrial processes, particularly those involving electroheat, is the holding of metallic charges at their solid/liquid state interface temperature. A transducer has been developed that achieves this by plunging and widthrawing a probe in an induction-heated metallic charge. The probe is driven by a servomotor whose armature current senses the state of the charge. Successful r... View full abstract»

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  • Contributors

    Publication Year: 1970, Page(s):81 - 84
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1970, Page(s): 84-a
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  • Invitation for Papers

    Publication Year: 1970, Page(s): 84-b
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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
K1N 6N5 CANADA
Fax: 613-562-5664
shervin@discover.uottawa.ca