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Microwave Industrial, Scientific and Medical Applications in Brazil

Published online by Cambridge University Press:  28 February 2011

Octavio M. Andrade
Octavio M. Andrade*
Affiliation:
Instituto Maua de Tecnologia, Estrada das Lagrimas 2035, Sao Caetano do Sul, Sao Paulo, 09580 -, Brazil
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Abstract

Microwave ISM applications in Brazil are reviewed, with special emphasys on industrial. applications and measurement techniques of the dielectric properties of materials, where developments have been most sicgnificant.

Special techniques for measuring the properties of typical Brazilian soils for radiometric applications in satellite remote sensing are discussed.

High power microwave techniques are presented and analyzed.

Industrial applications in ceramics, chemical products, food processing, sterilization, production of alcohol, and many others are explained. The design of special applicators for the above techniques, including continuous processing apparatus, detectors, special loads and waveguide configurations are reviewed.

Various methods for obtaining the dielectric constant of solid and liquid substanlces are presented, and experimental techniques are analyzed.

Biological and medical applications are in early stages of development, but present a great potential in the coming years at various well equipped medical institutions.

In conclusion, the great potential of microwave non-communications applications in Brazil is explained, with promising achievements in the years ahead.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 189: Symposium L – Microwave Processing of Materials II , 1990 , 27
Copyright
Copyright © Materials Research Society 1991

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References

REFERENCES

1. Palme, U.W., Microwave X-Band Radiometric Characteri sat-i on of Brazil an Soitls by MeasLurement of the Comp l ex Permittivity (C),“Proceedin qs of IGARSS”88 Symposiunm, Edinburgh, Scotland, 13-16 Sept. 1988.Google Scholar
2. Senise, J.T. et al. ”Microwaves and the Industrial Pr'oduction of Ethanol,” Proceedings (-.f the IV Internati(-rial Sym.posium oan Alco-iho:il Fuels Technrology, GUar-uja, Sao Pau o, Brazil, October 1986.Google Scholar
3. Senise, J.T. and Andrade, O.M., “Applicators- for the ContinUOuS Microwave Processinq of Liq(uids, Suspensions and Particulate Solids, Heationg arnd Pri-cessir, 7 Conf -er er nce, Br-i ti -ih Nat-i oanalt Committee for El ect-roheat, Cambr i dge, England, 23-26 Sept. 1986.Google Scholar
4. Roberts, S. and Hippel, A. von, “A New Method -for Measuring Dielectric Constant and Loss in the Range o-f Centimenter Waves,” J. Appl. Phys. 17(7), 1946.Google Scholar
5. Nelson, S.O., Schlaphoff, C.W. and Stetson, L.E., “A Comp uter PrFogram for Short--Circuite'd Waveguide Diel.ectric--Propertics Measurements on High- or Lcw--Loss Materials,” The Journal- of critis m's Power 8 (1), 1973.Google Scholar
6. FatXuzzo, E. and Mason, P.R., “A Two--Impedance Method -for Measuriring lhe Microwave Dielectric Constant of Li quiids,” Journal of Scientific Instruments, vol.41,pp.694–695, Nov. 1964.Google Scholar
7. Andrade, A.O.M., Senise, J.T. and Stuchly, S.S., “A Resonator Method f or Per-mittivity Measurements, “IEEE M77TT--S Iriterynatiirnal P'icroi'jave Syumipi:isium, Los Angeles, CA, 1981.Google Scholar
8. Stuchly, M.A. and Stuchly, S.S., “Coax i al Line Reflection Methods for Measuring the Dielectric Properties of E. oltogical Substances at Radiio and Microwave Frequencies-A Review,” IEEE Tranzs. Instr. Meas., vol. IM–29,no.3, Sept. 1980.Google Scholar
9. Pouzada, E.V.S., “A Semi--Automatic Technigque -for the Measurement of Complex Permi t-t i vi ty wi th Ti me-Domrai n Reflectometry, “M.S. Thesis, Polytechnic School of the Unitversity of Sao Paulo, Brazil (to be presented).Google Scholar