IEEE Transactions on Instrumentation and Measurement

Issue 3 • Sept. 1980

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Displaying Results 1 - 20 of 20
  • Table of contents

    Publication Year: 1980, Page(s): c1
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  • IEEE Instrumentation and Measurement Society

    Publication Year: 1980, Page(s): c2
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  • Thermal Instrument for Measurement of Voltage, Current, Power, and Energy at Power Frequencies

    Publication Year: 1980, Page(s):153 - 157
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1245 KB)

    The design of an instrument for precision measurement of ac voltage, current, power, and energy is described. It has been developed as a standard for evaluating the performance of instrumentation used in the power frequency range (45-65 Hz). Its accuracy relies on a continuous ac/dc transfer which is achieved by automatically balancing the alternating current derived from the quantity to be measur... View full abstract»

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  • Atomic Time and Frequency Standards Development at Shanghai Observatory, China

    Publication Year: 1980, Page(s):158 - 163
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2811 KB)

    The performance characteristics of several types of our atomic frequency standards are described. All of these standards are designed, developed, and fabricated in China. The hydrogen maser is the only type developed by the Shanghai Observatory. This paper also describes briefly the basic consideration for system implementation, calculation approach, and experiment results in the generation of the... View full abstract»

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  • Measurement of Relaxation Time Constants of Optically Pumped Stored Mercury Ions

    Publication Year: 1980, Page(s):163 - 167
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (738 KB)

    A method is described which makes it possible to measure the relaxation time constants of mercury ions. They are confined in a radio-frequency trap and optically pumped in order to observe the hyperfine transition in their ground state. This method is based on the study of the fluorescence signal emitted by the ions in various steady- and transient-state experiments. The storage time, longitudinal... View full abstract»

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  • Measurement of the Absolute Frequencies of CO2 Laser Transitions by Multiplication of CO2 Laser Difference Frequencies

    Publication Year: 1980, Page(s):168 - 176
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2383 KB)

    It is verified experimentally that frequency differences between CO2 laser lines and the harmonics of these differences can be used as intermediate frequencies to bridge the gap between microwave frequency standards and infrared frequencies. Criteria for the design of a microwave to 30-THz frequency chain are discussed, and experimental details of the measurement of five CO2 isotope laser frequenc... View full abstract»

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  • Coaxial Line Reflection Methods for Measuring Dielectric Properties of Biological Substances at Radio and Microwave Frequencies-A Review

    Publication Year: 1980, Page(s):176 - 183
    Cited by:  Papers (301)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1812 KB)

    Coaxial line reflection methods for measuring dielectric properties of biological materials at radio (RF) and microwave (MF) frequencies are reviewed and compared from the point of view of their relative uncertainties of measurement of lossy substances with high dielectric constant. Advantages and limitations of different methods and some practical recommendations are presented. View full abstract»

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  • Broad-Band Calorimeter for Precision Measurement of Millimeter- and Submillimeter-Wave Power

    Publication Year: 1980, Page(s):183 - 189
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1456 KB)

    A millimeter-wave dry calorimeter has been developed for power levels of 0.1 to 100 mW. The estimated instrument error for power levels of 10-100 mW is less than 0.3 percent. The required time for final reading is only about 40 s, which makes the instrument very useful for general laboratory power measurement. The VSWR is less than 1.15 over the whole waveguide band 60-90 GHz. The construction is ... View full abstract»

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  • A Homodyne Detection at 100 GHz with a Pyroelectric Detector

    Publication Year: 1980, Page(s):190 - 192
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    Homodyne detection of 100-GHz signals has been accomplished with a PVF2 pyroelectric detector. The minimum detectable power was 4 X 10-15 W using approximately 1-Hz bandwidth. The technique is applicable to active measurements where the signal source can be used as the local oscillator of the homodyne detection. View full abstract»

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  • A Least Squares Fit Method for Precision Evaluation of Waveguide-Resonator Measurements

    Publication Year: 1980, Page(s):193 - 194
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (381 KB)

    The resonance frequencies of waveguide resonators, e.g., for the measurement of dielectric constants, are evaluated using a least squares fit method based on the analytic eigenfrequency equation. This yields a reliable estimate of the number of order of the resonances even for long resonators and averages random measurement errors. View full abstract»

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  • Digital Frequency Multiplier for Spectrum Measurement of Periodic Signals

    Publication Year: 1980, Page(s):195 - 198
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (937 KB)

    Frequency multipliers find applications in the Fourier and Walsh spectrum measurements of periodic signals. Earlier digital frequency multipliers use two counters: 1) An upcounter which is partitioned into a fractional counter of kbits in cascade with an integral counter. This determines the period of the input signal by the number of clock pulses that are accumulated in a period of the signal. 2)... View full abstract»

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  • A Novel Method for Signal Energy Measurement

    Publication Year: 1980, Page(s):198 - 200
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1221 KB)

    This paper presents a method to measure the energy in a signal without the use of an analog-to-digital converter. This is especially useful for inexpensive microprocessor-based systems where a large number of multiply operations proves too time consuming. The approach is based on counting the number of pulses from the output of a voltage controlled oscillator (VCO) whose control voltage is the squ... View full abstract»

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  • Electrothermal Characterization for a Fusible Link

    Publication Year: 1980, Page(s):201 - 204
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1432 KB)

    A low energy fusible link was characterized by its electrothermal analog model. Thermal transient testing apparatus, procedures, and methodology were used to determine the required parameters. The thermal time constant was determined by a novel comparison technique. Typical data and its relevance are presented. View full abstract»

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  • A Generalized Biquadratic Filter with Parameter Display

    Publication Year: 1980, Page(s):204 - 211
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2206 KB)

    An instrument that couples a new type of biquadratic filter with a picture display capability of s-plane pole and zero locations is described. The filter design allows easily movable, continuous, and orthogonal pole-zero adjustment by the user of all possible stable combinations of biquadratic functions. The resulting instrument represents a uniquely useful educational tool for graphically portray... View full abstract»

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  • A Precision Controlled Current Source

    Publication Year: 1980, Page(s):212 - 213
    Cited by:  Papers (1)  |  Patents (2)
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  • A Possible Enhancement to Owen's Differential Dual-Slope Converter

    Publication Year: 1980, Page(s):213 - 214
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  • A Technique for Measuring an Impedance Magnitude

    Publication Year: 1980, Page(s): 214
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  • Contributors

    Publication Year: 1980, Page(s):215 - 217
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  • An Invitation to Membership

    Publication Year: 1980, Page(s):217-a - 217-e
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  • IEEE Instrumentation and Measurement Society

    Publication Year: 1980, Page(s): 217-d
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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