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Abstract
It is shown that a bi-directional waveg aide launcher can be used advantageously for reducing the reflection coefficient mismatch of an input inipedance of an applicator.
In a simple bi-directional waveguide launcher, the inagnetron is placed in the waveguide and generates a nominal field distribution with significant output impedance in both directions of the waveguide. If a standing wave is tolerated in the torus, which connects the launcher and the applicator, the power transfer from the magnetron to the applicator can be optimal, without using special inahhing devices. D is also possible to match the bi-directional launcher with two inductance stubs near the antenna of the magnetron and use them for supplying a two-input applicator without reflection.