IEEE Transactions on Instrumentation and Measurement

Issue 1 and 2 • March-June 1965

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Displaying Results 1 - 21 of 21
  • [Front cover]

    Publication Year: 1965, Page(s): c1
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1965, Page(s): c2
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  • Table of contents

    Publication Year: 1965, Page(s): 1
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  • A Stable Tunable Microwave Source

    Publication Year: 1965, Page(s):2 - 10
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2225 KB)

    This paper describes a prototype model of a phase-stabilized backward wave oscillator (BWO). The BWO is locked to a harmonic of a crystal oscillator by employing an automatic phase control loop. Tuning is accomplished by pulling the crystal oscillator and switching different crystals into the oscillator circuit. Power spectrum plots are taken in open-and closed-loop conditions, and methods of anal... View full abstract»

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  • The Design of a Portable Instrument for the Detection of Atmospheric Pentaborane and Other Toxic Gases

    Publication Year: 1965, Page(s):11 - 19
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2907 KB)

    A direct reading, automatic, and temperature insensitive instrument has been developed for the detection and recording of pentaborane in air down to and below 0.1 parts per million (ppm) sensitivity using the flame-emission principle. Toxic levels of many other volatile materials may also be detected with appropriate modification. A small hydrogen flame takes on a typical greenish cast in the pres... View full abstract»

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  • A Portable Microwave Phase and Amplitude Test Set

    Publication Year: 1965, Page(s):19 - 27
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2543 KB)

    Phase alignment at microwave frequencies may be made to 0.1?? or less, and amplitude balance to 0.1 dB may be made simultaneously with this fully solid-state test set which is designed to be comparable in size and weight to a Tektronix oscilloscope. Provisions are incorporated for testing with either pulsed or CW signals. Present means of measuring phase and amplitude differences at microwave freq... View full abstract»

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  • Correlation Estimation in Noise-Modulation Systems by Finite Time Averages

    Publication Year: 1965, Page(s):28 - 32
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (693 KB)

    Application of noise-modulated systems frequently involves measurement of autocorrelation by finite time averaging. Formulas are developed for the error involved in such measurement for case of frequency modulation by noise. Comparison is made with the case of amplitude modulation. Optimum filters for averaging are calculated and their performance compared in one case with that of the ordinary tim... View full abstract»

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  • The Measurement of Narrow Magnetic-Resonance Linewidths

    Publication Year: 1965, Page(s):33 - 39
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1500 KB)

    A discussion is given of the origin of various errors that may occur in the measurement by cavity perturbation techniques of narrow magnetic-resonance linewidths. It is shown that the absorption by a spherical magnetic sample in a microwave cavity varies as sin2θ, where θ is the angle between the static and microwave magnetic fields. A method of choosing the optimum cavity paramete... View full abstract»

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  • A Fast-Acting Feedback Loop for Pulse Amplitude Ratio Measurement

    Publication Year: 1965, Page(s):39 - 46
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1957 KB)

    Design and operating details of a voltage ratio measuring circuit are presented. The circuit employs a wide bandwidth function multiplier as a variable gain amplifier. The denominator voltage activates a feedback loop causing multiplier gain adjustment. Adjustment proceeds until the multiplier output is equal to a Zener reference voltage. The multiplier gain is then equal to the ratio of Zener ref... View full abstract»

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  • Quick Determination of Thermal Conductivity of Potting Compounds by a Transient Technique

    Publication Year: 1965, Page(s):46 - 52
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (937 KB)

    This paper is based on a study made by the author of a simple and reasonably accurate transient method for determining the thermal conductivity of potting compounds. This method used a cylindrical test specimen with axial heat addition. The shape of the specimen described in this report has no bearing on the measurement as long as the specimen is of sufficient size. This paper presents mathematica... View full abstract»

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  • Fabry-Perot Interferometers at 168 Gc/s

    Publication Year: 1965, Page(s):52 - 58
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (6106 KB)

    Extension of high Q resonant devices, such as microwave cavities, into the millimeter region, leads to prohibitively small structures at frequencies above 100 Gc/s. The Fabry-Perot interferometer [1]-[3] serves as a satisfactory high Q millimeter resonator, however, since the size of the structure is relatively large compared to a wavelength. This size may be determined in part by external require... View full abstract»

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  • A Coaxial Calorimeter for Use as a Microwave Power Standard

    Publication Year: 1965, Page(s):59 - 63
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2007 KB)

    A coaxial calorimeter has been built for use in the comparison of power at high frequencies with dc resistance and voltage standards. The temperature rise of the metal jacket of a 50-ohm coaxial termination is measured with a thermopile when a known level of dc power is fed into the calorimeter. The high-frequency sensitivity of the calorimeter is obtained by modifying the dc sensitivity for: 1) I... View full abstract»

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  • Phase-Locked Sampling Instruments

    Publication Year: 1965, Page(s):64 - 68
    Cited by:  Papers (5)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (849 KB)

    This paper describes a new approach to the design of RF instruments which are capable of measuring phase difference, level, distortion, and amplitude modulation of high-frequency signals from about 1 Mc/s to 1000 Mc/s or higher. The basic block consists of a modified phase-lock loop with a search and reset circuit. The input high-frequency signal is sampled, the frequency of the sampled output is ... View full abstract»

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  • A Pulsed Electron Beam System

    Publication Year: 1965, Page(s):69 - 71
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1623 KB)

    A versatile and simplified electron beam system for producing variable duration pulses is described. The electron beam is swept over a narrow slit; the electrons passing through the slit fonn the variable duration pulse. A minimum pulse duration of 3 ns is theoretically possible with the present maximum sweep frequency of 1 Mc/s. However, the system should be adaptable with modification to accommo... View full abstract»

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  • Fast Capacitor Bank for Pulsed Magnetic-Field Studies

    Publication Year: 1965, Page(s):72 - 74
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1445 KB)

    The design of a 20 kV, 60 , μF, 12-kJ capacitor bank for pulsed magnetic-field studies is reported in detail. In particular, a parallel-plate discharge circuit is described which results in a total bank inductance of 120 nH. Initial experiments with a flux concentrator magnet coil yielded a magnetic field of 250 kG in a volume of 2.41 cm3 at a bank voltage of 14 kV. View full abstract»

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  • A Transistorized Cathode-Ray Phase-Sensitive Null Detector

    Publication Year: 1965, Page(s):75 - 77
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1196 KB)

    A tuned cathode-ray null detector developed for use with a current transformer test set is described. Apart from the cathode ray tube, the detector is completely transistorized and has been designed to detect signals as low as 20 µV at frequencies of 50, 60, and 400 c/s. The third harmonic is down at least 40 dB from the fundamental. View full abstract»

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  • Analysis of a Reentrant Delay Line Real Time Speed-Up Device

    Publication Year: 1965, Page(s):78 - 82
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (760 KB)

    The output spectrum of an idealized version of a reentrant delay line speed-up device is calculated. Study of this spectrum yields considerable insight into the rather peculiar way in which this device achives a speed-up in real time. The analysis is then modified to show the effects of time sampling and boxcarring on the output spectrum. Finally, the use of digital instead of analog delay lines i... View full abstract»

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  • A General Expression for the Electrometer Transfer Impedance

    Publication Year: 1965, Page(s):83 - 89
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (770 KB)

    An expression for the electrometer transfer impedance Z21 is derived which describes the high-gain amplifier and the feedback network as general functions of the Laplace operator s. The equation derived is in the form of the general feedback equation, enabling the designer to employ the many tools of feedback analysis, such as root locus, Nyquist or Routh stability criteria, and Bode plots. Previo... View full abstract»

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  • A Method for Accurately Measuring the Vertical Electric Field Strength of a Propagating VLF Wave

    Publication Year: 1965, Page(s):89 - 97
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (4523 KB)

    Ideally, the vertical electric field strength of a propagating VLF wave can be measured by observing the terminal voltage of a short dipole antenna placed in the field; but, in applying this principle a number of practical difficulties are encountered. Methods of overcoming these difficulties have been studied using a working-model field-strength meter of convenient dimensions. Such a device can b... View full abstract»

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  • Contributors

    Publication Year: 1965, Page(s):97 - 100
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  • Invitation for contributions

    Publication Year: 1965, Page(s): 100-a
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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