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IEEE Transactions on Instrumentation and Measurement

Issue 2 • June 1976

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Displaying Results 1 - 22 of 22
  • 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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  • Analysis of errors in internal marker-pair generation of sweep generators

    Publication Year: 1976, Page(s):93 - 96
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (781 KB)

    Two configurations of pulse-type marker-pair generation in sweep generators are analysed to explain the causes of frequency errors in its internal marker-pair. One configuration employs amplitude modulation of the swept frequency oscillator for producing markers whereas the other uses a marker adder circuit after video detector of the unit under test. It is shown that main contribution to the freq... View full abstract»

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  • A method of measuring the accumulated arc energy using a digital counter

    Publication Year: 1976, Page(s):96 - 99
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (816 KB)

    This paper describes a simple method of measuring the discharge energy of an arc and/or the accumulated energy of a series of arcs. This method is based on the conversion of the arc energy into a pulse train, repetition rate of which is proportional to the amplitude of the arc power thereby eliminating the need for the analog circuit to integrate the arc power within arc duration as well as for th... View full abstract»

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  • A system for automatic suppression of signals picked up by a sensitive receiver from a nearby oscillator

    Publication Year: 1976, Page(s):99 - 103
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (891 KB)

    In a great variety of applications, a microwave signal is used to remotely probe a physical object, the modulation of the reflected signal being analysed by a receiver placed close to the oscillator. Limited isolation between the oscillator and receiver may cause serious problems. This paper describes a method to cancel the leakage signal by injecting a compensating signal derived from the oscilla... View full abstract»

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  • Subnanosecond risetime pulse generators

    Publication Year: 1976, Page(s):104 - 107
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2331 KB)

    Treats the design of solid-state pulse generators with risetimes less than 100 ps. These generators have been used in time-domain measurements on microwave components and materials to obtain frequency characteristics from time domain waveforms. A brief review of various sources including avalanche transistors, tunnel diodes, and step-recovery diodes (SRD's) is given. The main feature is a descript... View full abstract»

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  • Array velocimeter imaging laser speckle pattern

    Publication Year: 1976, Page(s):108 - 111
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1287 KB)

    A noncontact velocity measurement system utilising a solid-state array imaging a moving laser speckle pattern was developed for measuring the velocity of a moving vehicle relative to the terrain it traverses. The electronics and the online minicomputer program together with the laboratory system test results are described. View full abstract»

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  • A versatile pseudo-random noise generator

    Publication Year: 1976, Page(s):112 - 116
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1100 KB)

    A detailed design is presented for a digital pseudo-random noise generator. The instrument is built with standard integrated circuits. It produces both binary noise (pseudo-random binary sequence) and white Gaussian noise of variable bandwidth. By setting front panel switches to match tabulated octal codes, one may select a vast number of independent noise programs. View full abstract»

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  • Response time measurements using Walsh functions

    Publication Year: 1976, Page(s):116 - 119
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (677 KB)

    The sal- and cal-functions of the well-known Walsh functions are used to construct a simple and minimal Walsh function generator. Codes at random sequence or a sequence of codes at random time are generated. A generated code automatically enables a particular stimulus (which may be visual or audible) or any appropriate objective external stimulus (depending upon the response time and the reflex ac... View full abstract»

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  • An instrument for “real-time” measurement of the decaying edge of transient signals

    Publication Year: 1976, Page(s):120 - 125
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1075 KB)

    The problem of measuring the decaying edge of bandlimited transient signals in `real time' is discussed for signals with a priori unknown arrival time, peak amplitude and envelope shape, whose decay time to rise time ratios are in excess of 50. An instrument is proposed to identify, measure and normalise the peak of the transient signal and thus permit measurement of the decaying edge to be... View full abstract»

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  • Absolute calibration of microwave attenuation measurement systems

    Publication Year: 1976, Page(s):126 - 128
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    The application of the Laverick 2:1 voltage step to the absolute calibration of microwave attenuation measurement systems is described. A practical example of a 10 GHz 6.0206-dB switched attenuator illustrates the contention that a very good attenuation measurement system can be checked within its own laboratory to an accuracy one or two orders of magnitude better than is usually possible in an in... View full abstract»

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  • A modulated subcarrier technique with instantaneous amplitude and phase information

    Publication Year: 1976, Page(s):128 - 131
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (646 KB)

    An accurate and instantaneous microwave phase and amplitude measurement technique is described, that makes use of a single-sideband generator and a single-sideband detector. The phase and amplitude values of a microwave signal are transposed to an IF signal of a convenient frequency. The dynamic range may be as high as 80 dB and the phase and amplitude errors in this range are below 1° and ... View full abstract»

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  • Integrating analog-to-digital converter with digital self-calibration

    Publication Year: 1976, Page(s):132 - 138
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1316 KB)

    With dual-slope integrating analogue-to-digital (A/D) converters, which are most frequently used for relatively low-speed conversion, the drift of the operational amplifier is a very critical factor in limiting their performance. The newly discovered digital self-calibration method which completely eliminates the drift problem, is more readily adaptable to ratiometric conversion, where the input a... View full abstract»

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  • Direct measurement techniques of transmission line corrections for thermal noise standards

    Publication Year: 1976, Page(s):138 - 145
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1293 KB)

    A thermal noise source consists of a matched termination and a transmission line. A method which permits a direct measurement of the correction due to the transmission line effects on the thermal noise source without any measurement of temperature, loss, and reflection distribution in the transmission line is presented. Generalised expressions for the equivalent temperature of the thermal noise so... View full abstract»

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  • A novel method for cavity parameter measurement

    Publication Year: 1976, Page(s):145 - 151
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1259 KB)

    A novel swept frequency method for cavity parameter measurement applicable to both transmission- and reflection-type resonators is presented. Signals proportional to the input reflection coefficient squared |S11|2 and/or signals proportional to the transducer gain squared |S21|2 of the cavity under test and of a reference cavity, e.g., a wa... View full abstract»

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  • Application of avalanche transistors to circuits with a long mean time to failure

    Publication Year: 1976, Page(s):152 - 160
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2467 KB)

    This paper intends to give circuit designers a survey of the performance limits of transistors in the avalanche region and show their practical use in reliable long-lived devices. The most important problems encountered when designing special circuits are discussed in detail. In particular, the conditions for obtaining reflection-free rectangular pulses are presented. Furthermore, criteria for cho... View full abstract»

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  • A simple overcurrent protection circuit for a high voltage laboratory

    Publication Year: 1976, Page(s):161 - 162
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (557 KB)

    A system for safeguarding a moderate power high voltage laboratory against transformer overcurrents following insulation failures in test objects is described. It is simple, requiring the construction of only two solid-state control circuits and the modification of a commercially available solid-state contactor. It has been tested successfully with simulated breakdowns at up to 50-kV rms, 60 Hz wi... View full abstract»

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  • A simple and wide-range capacitance measuring equipment using transistor blocking oscillator

    Publication Year: 1976, Page(s):162 - 163
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (546 KB)

    A transistor blocking oscillator is used for measurement system of capacitance by using its linear relationship in logarithm between impulse frequency and capacitance. The equipment can indicate 10 pF to 1.0 μF on a d.c. meter. View full abstract»

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  • Fluidic display using liquid crystals

    Publication Year: 1976, Page(s): 164
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (257 KB)

    Application of liquid crystals for developing a nonmoving part fluidic display is presented. View full abstract»

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  • Dimpled coupler for fiber-optic bundles

    Publication Year: 1976, Page(s):164 - 165
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The initial results of a continuing research effort in fiber optic technology are reported. A fiber bundle coupler has been fabricated and preliminary results obtained. View full abstract»

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  • Contributors

    Publication Year: 1976, Page(s):166 - 169
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  • An investment in your professional future [advertisement]

    Publication Year: 1976, Page(s): 1
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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
Prof. Alessandro Ferrero
Dipartimento di Elettrotecnica
Piazza Leonardo da Vinci 32
Politecnico di Milano
Milano 20133 Italy
alessandro.ferrero@polimi.it
Phone: 39-02-2399-3751
Fax: 39-02-2399-3703