Multimode cavity efficiency optimization by optimum load location-experimental approach
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AuthorRequena Pérez, María Eugenia; Pedreño Molina, Juan Luis; Monzó Cabrera, Juan; Díaz Morcillo, Alejandro Benedicto
Research GroupGrupo de Electromagnetismo y Materia (GEM)
Knowledge AreaTeoría de la Señal y las Comunicaciones
SponsorsThis work was supported in part by the Spanish Science and Technology Ministry under Project TIC2001-2778-CO2-02.
PublisherIEEE Microwave Theory and Techniques Society
Bibliographic CitationREQUENA PÉREZ, María E., PADREÑO MOLINA, Juan L., MONZÓ CABRERA, Juan, DÍAZ MORCILLO, Alejandro. Multimode cavity efficiency optimization by optimum load location-experimental approach. IEEE Transactions on Microwave Theory and Techniques, 53 (6): 2114-2120, Junio 2005. ISSN 0018-9480
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In this paper, a novel load-matching procedure for microwave-heating applicators is presented and tested. In order to accomplish the optimization procedure, an optimization method based on the use of the Lebenverg–Marquardt technique has been specifically developed and tested on two different microwave ovens. The proposed procedure allows an efficient optimization of three-dimensional microwave applicators by means of the dielectric sample relocation as a function of its complex permittivity, size, and operating frequency. Experimental measurements of the reflection coefficient are presented and analyzed over several samples and multimode cavities. Results indicate that high power efficiencies can be obtained provided that operating frequency is not just below TM-mode cutoff frequencies for the transverse dimensions of the oven.
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