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1969 IEEE Electromagnetic Compatibility Symposium Record

17-19 June 1969

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Displaying Results 1 - 25 of 65
  • [Front cover]

    Publication Year: 1969, Page(s): c1
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  • 1969 IEEE Electromagnetic Compatibility Symposium Record

    Publication Year: 1969, Page(s): nil1
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  • IEEE Electromagnetic Compatibility Group

    Publication Year: 1969, Page(s): nil2
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  • Chairman's Message

    Publication Year: 1969, Page(s): nil3
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  • Symposium Committee

    Publication Year: 1969, Page(s): nil4
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  • Table of contents

    Publication Year: 1969, Page(s):nil5 - nil6
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  • Interference Propagation

    Publication Year: 1969, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (607 KB)

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  • Studies of RF Biological Hazards from High Power HF Transmitters

    Publication Year: 1969, Page(s):5 - 6
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    A one-year research program is reported concerning an intensive investigation into biological RF radiation hazards from high power, high frequency (HF) antennas. This program consisted of two major phases: the measurement of field strengths in the near vicinity of high power HF band antennas, and coordinated clinical irradiation studies using male albino Wistar rats as the test specimens. An exten... View full abstract»

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  • The Compatibility of Man in the Microwave Environment

    Publication Year: 1969, Page(s):7 - 11
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    The behavior of the human body in response to microwave irradiation is complex. The conversion of microwave energy into heat is a principal mode of damage to living organisms, especially to the eyes, but much recent research supports the view that non-thermal effects are substantive. Russian workers continue to report a wider variety of effects than American workers, and they are more concerned wi... View full abstract»

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  • The Effects of the Local Environment on Interference Measurement and Prediction

    Publication Year: 1969, Page(s):12 - 17
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    An extensive set of electric field intensity measurements were taken in and around a typical operating site. The purpose of the measurement program was to determine the effects of the local structure and local noise environment on the propagation and reception of narrowband signals. Test data were obtained between 31 kHz and 2 GHz. Signal intensity measurements were recorded near transmitting sour... View full abstract»

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  • The Dimensions of Radio Noise

    Publication Year: 1969, Page(s):18 - 28
    Cited by:  Papers (4)
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    The radio noise field is composed of naturally occurring emissions from atmospheric and galactic processes, man-made disturbances and thermal radiation from the local environment. Natural noise processes including thermal radiation contribute the dominant noise at the extremes of the radio spectrum in metropolitan environments but are superseded by man-made noise in the LF to UHF bands. The domina... View full abstract»

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  • Interference Prevention in SCR Power Control

    Publication Year: 1969, Page(s):29 - 34
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  • THE Properties of the Radiation below 1 GHz from Gap-Type Electrical Discharges on Electric Power Distribution Lines

    Publication Year: 1969, Page(s):35 - 42
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    This paper describes the measured properties of the electromagnetic radiation from gap-type electrical discharges which occur on distribution lines and discusses some of the factors which affect these emissions. A discussion is given of the methods by which these waves are generated, of the measurement techniques and the findings of this investigation. View full abstract»

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  • An Evaluation of the Different Types of Digital Integrated Circuits as Sources of Electromagnetic Interference

    Publication Year: 1969, Page(s):43 - 48
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    Samples of the major types of integrated circuits were evaluated to determine their relative performance as electromagnetic interference (EMI) sources. A rating system which compares the performance of the different logic types as EMI sources is described in the paper, and a conclusion is made concerning the performance of digital logics as EMI sources. View full abstract»

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  • The Reducticn of Interference to Medium and High Frecuency Receiver Aerial Systems in Ships

    Publication Year: 1969, Page(s):49 - 54
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    In ships the restrictions on aerial sites lead to the use of common aerial working systems, while below decks the concentration of large quantities of electrical and electronic equipment produces a high level of environmental noise. The combination results in severe interference problems, and the need for special precautions in system design and installation integrity. After briefly describing suc... View full abstract»

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  • Active Preselection Filter Techniques for Adjacent Channel Interference Suppression at UHF

    Publication Year: 1969, Page(s):55 - 61
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    The development of a Q multiplier device which operates in the UHF region is described. With this device, preselection bandwidths representing a Q of approximately 7,000 were achieved at 300 MHz. The high Q values are obtained with a relatively compact device. Operational results illustrate the application of this device for improved filtering of closely spaced signals. View full abstract»

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  • Interference Blanker for HF Receivers

    Publication Year: 1969, Page(s):62 - 67
    Cited by:  Patents (1)
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    Requirements exist to improve airborne receiver reception under conditions of impulse interference produced by precipitation and atmospheric static. A new approach in communication receiver interference blanker circuitry was devised which overcomes the deficiencies and limitations of previously developed blankers. The all solid state limiter-blanker circuit developed comprise an independent "black... View full abstract»

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  • A Technique for Improving Cosite Compatibility

    Publication Year: 1969, Page(s):68 - 71
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    The basic theory of a multiresonant filter is discussed. Such filters can greatly improve cosite compatibility when connected between transmitter-receivers and their antennas. The equivalence of several filter circuit design variations is illustrated. A simple quantitative equation permitting the calculation of insertion loss in terms of bandwidth and circuit Q is provided. A universal "zero-loss"... View full abstract»

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  • Development of Extended Range Shielded Enclosures

    Publication Year: 1969, Page(s): 72
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    This paper presents the results of a research and development program launched by the Sprague Electric Company five years ago having a primary objective of furthering the state of the art of low frequency, low impedance (magnetic) shielded enclosure performance. The paper describes in detail the evaluation of shielded materials, compares several methods of measuring shielded effectiveness with the... View full abstract»

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  • The Shielding of Electromagnetic Pulses by Use of Magnetic Materials

    Publication Year: 1969, Page(s):73 - 79
    Cited by:  Papers (4)
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    An experimental verification of previous theoretical work on the diffusion of saturated regions in magnetic materials has been accomplished. The diffusion times for the saturated region in Hipernom?? tubes have been measured for various exciting magnetic fields and pulse durations. The calculated and experimentally obtained diffusion times are in excellent agreement. Exciting pulse currents up to ... View full abstract»

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  • Interference Predictions - Philosophies, Objectives, and Future Directions

    Publication Year: 1969, Page(s):80 - 84
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB)

    It is the intent of this paper to present both a broad overview of the total field of interference prediction and an analysis of past and current results obtained from specific prediction efforts. The broad overview portion of the paper consists largely of a discussion of the philosophy and purpose behind interference prediction efforts. The format of this overview will be an analysis of current s... View full abstract»

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  • Aircraft Antenna-Coupled Interference Analysis

    Publication Year: 1969, Page(s):85 - 90
    Cited by:  Papers (4)
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    A mathematical model specifically for aircraft antenna-to-antenna electromagnetic interference analysis has been developed. Basically, the model consists of a two-level analysis: 1) frequency coincidence to indicate potential interference and 2) a detailed analysis involving power levels and receiver thresholds. A receiver and transmitter are selected from the input data, and their frequency bands... View full abstract»

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  • Radiated Interference and Susceptibility Characteristics of Unshielded Lines

    Publication Year: 1969, Page(s):91 - 99
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    Because of relatively large effective radiating area, interface wiring is often a prime source of interference radiation and pickup in electronic systems. This paper presents a technique which allows quantitative prediction of the radiation and susceptibility characteristics of open wires. The technique is particularly well suited to predicting performance in the radiated interference and radiated... View full abstract»

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  • Frequency Spectra and Hermite Functions

    Publication Year: 1969, Page(s): 100
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  • Interference Prediction Model for a Quantized Pulse Position Demodulator Receiver

    Publication Year: 1969, Page(s): 101
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    The objective of the work described in this paper is to relate signal-to-noise ratio and signal-to-interference ratio at the input of a receiver employing a quantized pulse position demodulator to the decision errors occurring at the output. This paper describes the receiver model and discusses the assumptions made in its formulation. Assumptions concerning the description of desired signals, inte... View full abstract»

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