95 research outputs found

    Forty years of European microwaves. What about the future?

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    This paper describes some key points in the history and development of the European Microwave Conference, the European Microwave Week, and the European Microwave Association, starting from 1969. It captures the way in which the conference since the earliest days has sought to create a successful blend of scientific and industry interests and has adapted itself to and indeed shaped the many existing technical changes that have characterized and continue to be at the core of the field of microwave engineering.</jats:p

    Cross-polarization on a terrestrial path [microwave links]

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    Theoretical and experimental results concerning cross-polarization phenomena, obtained within the framework of the project, on the influence of wind, raindrop size and canting angle distribution; on the contribution of incoherent scattering and on the effect of cross-polarization on the quality of digital radiolinks are reviewed.Anglai

    Belgian state-industry-university cooperation in the field of Earth stations

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    1966 was the start in Belgium of a long cooperation between the state, industry, and universities, on the occasion of the specific programs of ESRO and its successor, the European Space Agency. Simultaneously, this cooperation was stimulated by the COST programs of the European Community. More specifically, over a period of about 30 years, it involved the Fonds des Protypes, the Services du Premier Ministre pour la Programmation de la Politique Scientifique (SPPS), later SSTC, and the RTT, later Belgacom, on the state side; the Groupe de Technologie de la Technologie Spatiale GETS Bruxelles, ETCA Charleroi, and Newtec Antwerpen on the industry side; and the Laboratoire d'Hyperfrequences UCL on the university side. Over the same period Belgian industry, north, center, and south altogether, has benefited from public funds of about 100 million BEF, not counting indexation, for acquiring expertise in designing and realizing Earth stations by making available, as a scientific tool for the university, three stations in 1978 and two stations in 1989.Anglai

    Commutation des noyaux magnétiques

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    Mémoire de licence -- Université catholique de Louvain, 196

    Microwave Education in Belgium

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    Belgium is a small country, with 10 million inhabitants in a 30 000 km2 area. Engineering education is provided by 7 universities and a military school on a 5-year program, as well as by a limited number of schools on a 4-year program. This paper describes microwave education within the universities. It emphasizes the link between research and education, showing similarities and differences among the various centers of education. Specific microwave design expertise, capabilities, and facilities are described

    Integrated Team Projects As Part of the Undergraduate Curriculum

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    What about safety when using mobile telephony?

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    Guidelines for limiting electromagnetic field (EMF) exposure provide protection against known adverse health effects. Biological effects, on the other hand, may or may not result in an adverse health effect. The purpose of this paper is to compare present recommendations for mobilophony with biological effects. The main biological effects are reviewed. Mobilophony fields are investigated, carrier as well as signal. Some attention is given to devices affecting eye, ear, and heart. Pulsed and ELF modulated fields are compared with CW fields. Finally, recommendations are analyzed in detail and compared with respect to biological effects.Anglai

    Experimental thermographic analysis of thermal effects induced on a human head exposed to 900-MHz fields of mobile phones

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    This paper summarizes the results of an experimental research of thermal effects induced by electromagnetic exposure to wireless mobile communication equipment. A series of experiments has been performed in order to examine the time evolution of the temperature of some body-part surfaces exposed to electromagnetic radiation emitted by global system for mobile communication mobile phones (900 MHz), Special attention has been paid to the analysis of the human head, as this is the human part mainly exposed in normal conditions of mobile phone use

    1990-1995 advances in investigating the interaction of microwave fields with the nervous system

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    After a short review of the nervous system and its constituents, recent data on microwave bioeffects are reviewed and evaluated, in particular, the effects on the brain and the spinal cord and under low-level irradiation. Special attention is paid to new results on the effects of modulated and pulsed waves with respect to both continuous wave (CW) irradiation, and,, In particular, to the frequency of the modulation. The last section nervous fibers, where significant progress has been made during the last years, Except for some tutorial aspects, the reviewed literature essentially covers the 1990-1995 period
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