Optimization of an open-ended microwave oven for microelectronics packaging
Sinclair, K.I., Goussetis, G., Desmulliez, M.P.Y., Sangster, A.J., Tilford, T., Bailey, C. and Parrott, A.K. (2008) Optimization of an open-ended microwave oven for microelectronics packaging. IEEE Transactions on Microwave Theory and Techniques, 56 (11). pp. 2635-2641. ISSN 0018-9480 (doi:10.1109/TMTT.2008.2005925)Full text not available from this repository.
A physically open, but electrically shielded, microwave open oven can be produced by virtue of the evanescent fields in a waveguide below cutoff. The below cutoff heating chamber is fed by a transverse magnetic resonance established in a dielectric-filled section of the waveguide exploiting continuity of normal electric flux. In order to optimize the fields and the performance of the oven, a thin layer of a dielectric material with higher permittivity is inserted at the interface. Analysis and synthesis of an optimized open oven predicts field enhancement in the heating chamber up to 9.4 dB. Results from experimental testing on two fabricated prototypes are in agreement with the simulated predictions, and demonstrate an up to tenfold improvement in the heating performance. The open-ended oven allows for simultaneous precision alignment, testing, and efficient curing of microelectronic devices, significantly increasing productivity gains.
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