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Effect of Bandwidth on Uniformity of Energy Distribution in a Multi-Mode Cavity

Published online by Cambridge University Press:  15 February 2011

Arvto C. Johnson ,
Robert J. Lauf  and
April D. Surrett
Arvto C. Johnson
Affiliation:
Microwave Laboratories, Inc., 8917 Glenwood Avenue, Raleigh, NC 27612
Robert J. Lauf
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831–6087
April D. Surrett
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831–6087
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Abstract

This paper reports on the results of experimental studies of the effect of bandwidth on the uniformity of energy distribution in a multi-mode cavity as well as on the development of a theoretical model to, at least qualitatively, describe the effect of varying the processing frequency. Using a mapping method reported in earlier work, Microwave Laboratories and Oak Ridge National Laboratory personnel have graphically measured the effect of processing bandwidth on heating uniformity. These results can be compared to the effects of other attempts to improve uniformity e.g., “mode stirrers.” Additional insight into the effect of bandwidth on time-averaged energy distribution within the cavity can also be gained from the simple theoretical model, which is presented for comparison with the experimental results. Finally, this paper uses the presented results to comment on the scalability of the variable frequency microwave processing methodology for large-scale applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 347: Symposium O – Microwave Processing of Materials IV , 1994 , 453
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

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