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IEEE Transactions on Microwave Theory and Techniques

Issue 2 • Date February 1971

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Displaying Results 1 - 25 of 27
  • [Front cover - Feb. 1971]

    Publication Year: 1971, Page(s):f1 - f2
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  • Table of contents - Feb. 1971

    Publication Year: 1971, Page(s): 1
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  • Editor's note

    Publication Year: 1971, Page(s): 2
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  • Guest Editorial [Special issue intro.]

    Publication Year: 1971, Page(s):2 - 3
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  • Introductory remarks [Special issue intro.]

    Publication Year: 1971, Page(s): 130
    Cited by:  Papers (1)
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  • The Tri-Service Program -A Tribute to George M. Knauf, USAF (MC)

    Publication Year: 1971, Page(s):131 - 146
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2455 KB)

    During World War II, the Department of Defense medical services became interested and concerned about possible hazards associated with the development, operation, and maintenance of the increasing numbers of RADARs and other radio-frequency emitting electronic equipment. After some investigations by the U. S. Navy and the U. S. Air Force, responsibility for research on the biomedical aspects of mi... View full abstract»

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  • Interaction of Microwave and Radio Frequency Radiation with Biological Systems

    Publication Year: 1971, Page(s):146 - 152
    Cited by:  Papers (26)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (811 KB)

    A survey of thermal and nonthermal effects is presented with some recommendations for future work. A basis of all biophysical considerations are the electrical properties including dielectric constants and conductivities for nearly all body tissues. Equations are presented which summarize previous experimental work and state dielectric constant and conductivity for tissues of high water content as... View full abstract»

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  • Biological Function As Influenced by Low-Power Modulated RF Energy

    Publication Year: 1971, Page(s):153 - 164
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1619 KB)

    In recent years it has been recognized that low-power-density modulated RF energy can affect the functioning of higher living organisms. In this paper the sparse data generated in the western hemisphere on this subject are considered, the reasons for their sparseness are noted, and the hypotheses on mechanisms that may provide an explanation for the observed effects and other possible effects are ... View full abstract»

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  • Microwave Radiation Safety Standards in Eastern Europe

    Publication Year: 1971, Page(s):165 - 168
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    Research in Eastern Europe on biological effects of microwaves is briefly reviewed and a basic viewpoint involving non-thermal and cumulative effects is presented. Safety standards expressed in terms of dose or irradiation are described based on this viewpoint. It is suggested that differences between these standards and those in the West may become smaller with further study and closer collaborat... View full abstract»

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  • Absence of Heart-Rate Effects in Rabbits During Low-Level Microwave Irradiation

    Publication Year: 1971, Page(s):168 - 173
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (821 KB)

    Soviet studies have reported that low-level microwave irradiation alters the heart rate of humans and animals. In a replication of one such study, 16 rabbits were exposed to dorsal irradiation n of the head by 2.4-GHz CW. microwaves at a power density of 10 mW /cm/sup 2/ for 20 min. The rest of the animal's body was shielded by absorbent material. There was no significant difference between the he... View full abstract»

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  • Evidence For Nonthermal Effects of Microwave Radiation: Abnormal Development of Irradiated Insect Pupae

    Publication Year: 1971, Page(s):173 - 178
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (858 KB)

    Several investigators have reported experiments in which microwave radiation caused biological damage at tissue temperatures which were not harmful when brought about by means other than microwaves. To study the effects of 10-GHZ CW radiation on a poikilothermic invertebrate animal, we irradiated early pupae of the mealworm beetle, Tenebrio molitor. Each pupa was inserted in a waveguide and irradi... View full abstract»

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  • Quantifying Hazardous Electromagnetic Fields: Scientific Basis and Practical Considerations

    Publication Year: 1971, Page(s):178 - 187
    Cited by:  Papers (20)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1471 KB)

    As commonly recognized, the problem of quantifying hazardous electromagnetic (EM) fields is difficult and has not yet been satisfactorily solved. Essentially, this is because people are often exposed to emanations from powerful sources of EM fields at points close to the sources and at points where arbitrary polarization and multipath interference exist. However, the accepted concepts, standards, ... View full abstract»

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  • Induced Fields and Heating Within a Cranial Structure Irradiated by an Electromagnetic Plane Wave

    Publication Year: 1971, Page(s):187 - 196
    Cited by:  Papers (63)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (908 KB)

    The induced fields and the static heating patterns within a multilayered spherical model that approximates the primate cranial structure irradiated by plane waves in the microwave spectrum are calculated. The relation of the model to the biological structure and the sensitivity of the results to the uncertainties in the dimensions and electrical properties of biological material are investigated. ... View full abstract»

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  • New Techniques for Implementing Microwave Biological-Exposure Systems

    Publication Year: 1971, Page(s):197 - 204
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1088 KB)

    In investigating the biological effects of microwave radiation, one of the most vexing problems is that of generating an essentially uniform plane wave with sufficient power density for illuminating biological samples. This paper describes three illumination systems: a focused prolate spheroid, an absorber-lined horn, and a compact range. The focused prolate spheroid has two foci: a waveguide feed... View full abstract»

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  • Analyses of Electromagnetic Fields Induced in Biological Tissues by Thermographic Studies on Equivalent Phantom Models

    Publication Year: 1971, Page(s):205 - 214
    Cited by:  Papers (123)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2781 KB)

    One of the most vexing problems in studies involving the interaction of electromagnetic fields and living biological systems and tissues is the quantification of the fields induced in the tissues by nearby sources. This paper describes a method for rapid evaluation of these fields in tissues of arbitrary shape and characteristics when they are exposed to various sources including plane wave, apert... View full abstract»

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  • Electromagnetic Fields and Relative Heating Patterns Due to a Rectangular Aperture Source in Direct Contact with Bilayered Biological Tissue

    Publication Year: 1971, Page(s):214 - 223
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1024 KB)

    Expressions are derived and evaluated for the electro-magnetic fields and associated relative heating patterns in two-Iayered biological tissue media exposed to a direct-contact rectangular aperture source. The source consists of a linearly polarized electric field distribution specified in the plane of the aperture. The results may be used for many biomedical applications ranging from the design ... View full abstract»

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  • Microwave Heating of Simulated Human Limbs by Aperture Sources

    Publication Year: 1971, Page(s):224 - 231
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (762 KB)

    Microwave heating of phantom models of human limbs by aperture sources is investigated theoretically and experimentally. These phantom models consist of triple-layered circular lossy dielectric cylinders. The three layers of dielectric materials simulate human tissues of fat, muscle, and bone. In the theoretical investigation, apertures operating in the frequency range of 433 to 2450 MHz are used ... View full abstract»

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  • Determination and Elimination of Hazardous Microwave Fields Aboard Naval Ships

    Publication Year: 1971, Page(s):232 - 238
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (931 KB)

    A qualitative description of the way that the problems of radio frequency and microwave radiation hazards to personnel aboard Naval ships have been handled is presented. The prediction and measurement of microwave fields produced by typical equipment used for communication, command and control, surveilance, fire control, and naviagtion are discussed. A hazard evaluation survey conducted aboard a f... View full abstract»

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  • Selective Electromagnetic Heating of Tumors in Animals in Deep Hypothermia

    Publication Year: 1971, Page(s):238 - 245
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (904 KB)

    A technique for heating tumors with microwave energy has been developed to achieve differential hypothermia in laboratory animals. In the differential hypothermia technique, a temperature difference of about 25/spl deg/C is maintained between the tumor and the body with the tumor being at normal body temperature. While the animal is in this deep differential hypothermic state, chemotherapeutic dru... View full abstract»

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  • Prolongation of Life During High-Intensity Microwave Exposures

    Publication Year: 1971, Page(s):245 - 247
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (325 KB)

    In an attempt to determine whether environmental control would be a feasible and effective tool with which to further investigate microwave bioeffects, we have performed a pilot study. Osborne-Mendel rats were exposed in a Iucite environmental chamber, continually flushed with liquid-nitrogen-cooled air. The results of this study indicate that ambient air temperature control can provide a means fo... View full abstract»

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  • Electromagnetic Fields and the Life Environment (Book Reviews)

    Publication Year: 1971, Page(s): 248
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  • Electromagnetic Fields and Life (Book Review)

    Publication Year: 1971, Page(s): 248
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  • Electromagnetic Radiation Meter (Correspondence)

    Publication Year: 1971, Page(s):249 - 250
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (325 KB)

    A radiation meter has been designed for the measurement of leakage from microwave ovens. A brief description of the meter is presented together with characteristics which suggest that the instrument has measurement applications other than that for which it was specifically designed. Some of the characteristics presented are geometry, temperature effects, frequency sensitivity, and conversion from ... View full abstract»

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  • Microwave Cataract (Correspondence)

    Publication Year: 1971, Page(s):250 - 251
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (329 KB)

    The production of cataract by exposure to microwave radiation can occur, although just how it occurs is not well established. Clarification as to the occurrence of cataract in microwave worker population can only be achieved by careful cumulative records of the visual and ophthalmological status of microwave worker populations. View full abstract»

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  • Analeptic effect of microwave irradiation on experimental animals (Correspondence)

    Publication Year: 1971, Page(s):251 - 253
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    First Page of the Article
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Aims & Scope

The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design..

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Editor-in-Chief
Dominique Schreurs
Dominique.Schreurs@ieee.org

Editor-in-Chief
Jenshan Lin
jenshan@ieee.org