| 摘要 |
A new, comparatively small type of microwave system based on open-ended applicators is disclosed. The applicator according to the invention uses a main evanescent and a propagating mode in combination, where the combination results in a cancellation of the horizontal magnetic fields at the ends of at least two opposing walls. The effect of this is that the fields propagating out of the applicator become concentrated to the applicator centreline (axis) region, provides an efficient heating of a load or assembly of loads, as well as a stable impedance matching of the system under variable loading conditions due to the mode evanescence, while not leaking energy between adjacent applicators. The applicator can also be used for direct feeding of an underlying small closed metal cavity, for providing (the same favourable) mode conditions to a load in this cavity.
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