IEEE Transactions on Instrumentation and Measurement

Issue 2 • June 1967

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Displaying Results 1 - 19 of 19
  • [Front cover]

    Publication Year: 1967, Page(s): c1
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1967, Page(s): c2
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  • Table of contents

    Publication Year: 1967, Page(s): 99
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  • Ground Instrumentation for Mariner IV Occultation Experiment

    Publication Year: 1967, Page(s):100 - 114
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4771 KB)

    The Mariner IV occultation experiment imposed unique requirements upon the NASA/Jet Propulsion Laboratory Deep Space Instrumentation Facility. It was necessary to measure extremely small deviations in the frequency to a few parts in 109. The instrumentation used and the results obtained are described. View full abstract»

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  • Active Filters Operating below 1 Hz

    Publication Year: 1967, Page(s):115 - 120
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (861 KB)

    Second-order RC filters are synthesized using two voltage amplifiers with gains A1 and A2. As the natural frequency depends on A1 only, and the damping factor depends on A1 and A2, these factors can be chosen consecutively by varying the two gains. The passive components need not have variable or accurate values. This feature is particularly useful in the realization of filters operating below 1 H... View full abstract»

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  • A Strip-Chart-to-Punched-Tape Translator

    Publication Year: 1967, Page(s):121 - 124
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2467 KB)

    A strip-chart translator was developed to convert complex strip-chart records (for example, those obtained from radio propagation tests) into digital format, on punched tape, to allow analysis by electronic computer. An operator is required to follow the chart trace with a cursor mark, but the translation process is otherwise automatic. The detail contained in such record traces has so far preclud... View full abstract»

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  • A Pseudo-Superheterodyne Receiver for Measuring Phase and Amplitude

    Publication Year: 1967, Page(s):124 - 128
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1941 KB)

    A simple high-sensitivity receiver for simultaneously measuring the amplitude and phase of signals at radio and microwave frequencies is described. The receiver is built, for the most part, with standard (microwave) components and employs a modulation technique. The receiver sensitivity, depending on the information bandwidth, is of the order of -100 dBm. Information bandwidths ranging from a few ... View full abstract»

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  • A New Wideband True Rms-to-Dc Converter

    Publication Year: 1967, Page(s):129 - 134
    Cited by:  Papers (13)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2724 KB)

    A new wideband true rms-to-dc converter is described, covering the ranges of 10 Hz to 100 kHz and 30 mV to 1 kV full scale, with crest factors in excess of 7 to 1. Operation is based on use of two precision dual-heater thermistors in an automatic double bridge, by means of which the temperatures of both thermistors are maintained constant to better than 0.002°C. Converter linearity is 0.02 pe... View full abstract»

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  • Another Zero-Crossing Principle for Detecting Narrow-Band Signals

    Publication Year: 1967, Page(s):134 - 138
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (769 KB)

    This paper describes a zero-crossing principle for detecting weak narrow-band signals immersed in Gaussian noise. This principle leads to a zero-crossing detector (detector II) which is relatively insensitive to system gain fluctuations. Moreover, for the detection of a weak sine wave in noise, zero-crossing detector II performs only 1.2 dB worse than the time-honored square-law detector. An appli... View full abstract»

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  • A Design of a Period-to-Frequency Analog Converter

    Publication Year: 1967, Page(s):138 - 142
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (747 KB)

    A method for designing a period-to-analog converter is described. The device accepts input signals of varying frequency and converts the period of the waveform to a time inverse voltage Vi(t). This voltage is sampled at the end of the period, and this information is held over the following interval. The analog derived from the input signal is a voltage proportional to the repetition rate. The appr... View full abstract»

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  • A Precision Current Comparator

    Publication Year: 1967, Page(s):142 - 145
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1353 KB)

    A technique capable of precise comparison of currents in different parts of a network or between currents in different networks is discussed. With proper conditions, this comparison can be done with negligible perturbation of the networks under measurement. Experiments on a coaxial system at 30 MHz are discussed. View full abstract»

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  • High-Voltage Pulse Reflection-Type Attenuators with Subnanosecond Response

    Publication Year: 1967, Page(s):146 - 154
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2646 KB)

    Significant advances have been achieved in high-voltage pulse attenuation and measurement fidelity by utilizing the principle of traveling-wave reflection at an abrupt impedance mismatch along a transmission line. Such "reflection-type" attenuators allow practically distortionless attenuation of the signal, independent of voltage level. Their rise-time response and attenuation factor can be known ... View full abstract»

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  • Orientation Measurement of Circular Plates of Crystals

    Publication Year: 1967, Page(s):154 - 156
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (505 KB)

    A method which can be used to check the orientation angle of circular crystal plates to a high degree of accuracy is described. The method involves 1) making two readings on an X-ray goniometer, 2) determining a correction from a chart, and 3) applying this correction to one of the goniometer readings. View full abstract»

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  • Enhancement of Signal-to-Noise Ratio of Turbulence Measurements by Cross Correlation

    Publication Year: 1967, Page(s):156 - 163
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2031 KB)

    A novel method for the measurement of very low turbulence intensities in fluids, based on a dual heat-transfer transducer and a cross correlator, is described. The minimum measurable turbulence intensity is shown to vary with the square root of the minimum detectable cross-correlation coefficient ρ. The effects of finite additive noise correlation and finite lateral separation between the ... View full abstract»

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  • Alternating-Current Solenoid of Finite Length in a Medium with Hall Conductivity

    Publication Year: 1967, Page(s):164 - 171
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1409 KB)

    The electric field of an alternating-current solenoid of finite length in conducting media is investigated. The first-order (Hall) effect of an externally applied, constant, axial magnetic field on the electric field is considered. The coil impedance and the electromotive force induced in a certain closed path are calculated numerically for small frequencies. View full abstract»

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  • Progress in the United States on Electromagnetic Standards and Measurements at 30 kHz to 1 GHz, 1963 through 1965

    Publication Year: 1967, Page(s):172 - 178
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2420 KB)

    A digest of highlights is presented on the most significant U. S. contributions to the measurement of attenuation, impedance, phase, field strength, thermal noise, current, and voltage at 30 kHz to 1 GHz. A total of approximately 30 contributions are digested. The following accomplishments are among them: a supersensitive detector for a complex-insertion-ratio measurement system having accuracies ... View full abstract»

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  • Contributors

    Publication Year: 1967, Page(s):179 - 181
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1967, Page(s): 181a
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  • Invitation for Contributions

    Publication Year: 1967, Page(s): 181-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.

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Editor-in-Chief

SHERVIN SHIRMOHAMMADI
School of EECS
University of Ottawa
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