Effect of mode-stirrer configurations on dielectric heating performance in multimode microwave applicators
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AuthorPlaza González, Pedro; Monzó Cabrera, Juan; Sánchez Hernández, David Agapito; Catalá Civera, José Manuel
Research GroupGrupo de Ingeniería de Microondas, Radiocomunicaciones y Electromagnetismo (GIMRE)
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 CitationPLAZA GONZÁLEZ, Pedro, MONZÓ CABRERA, Juan, CATALÁ CIVERA, José Manuel, SÁNCHEZ HERNÁNDEZ, David. Effect of mode-stirrer configurations on dielectric heating performance in multimode microwave applicators . IEEE Transactions on Microwave Theory and Techniques, 53 (5): 1699-1706, May 2005. ISSN 0018-9480
Análisis por elementos finitos
In this paper, several mode-stirrer configurations are compared in order to establish their influence on the electric-field uniformity within an irradiated dielectric sample inserted in a microwave- heating applicator. Two different scenarios are evaluated with metallic sheets moving inside the multimode applicator. The different stirrer configurations are tested and compared for low-, medium-, and high-loss dielectric sample materials. Additionally, a straightforward procedure based on a generalized plane-wave approach is proposed and evaluated as a computationally efficient alternative for calculating the electric-field distribution inside materials processed in these microwave applicators with mode stirrers. Although very different electric patterns are achieved depending on stirrer geometry and sample permittivity, the plane-wave approach has been shown to provide a very good approximation for medium and high lossy dielectric materials.
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