Improved directional couplers for overmoded waveguide systems |
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| Authors: | G. Janzen and H. Stickel |
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| Affiliation: | (1) Institut für Plasmaforschung, Universität Stuttgart, D-7000 Stuttgart 80, Germany;(2) Present address: Kernforschungszentrum Karlsruhe, D-7500 Karlsruhe, Germany |
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| Abstract: | The performance of multihole directional couplers can be considerably improved by placing a second hole structure to the existing one. The improvement may be aimed at directivity or at suppression of certain unwanted modes propagating either in forward or backward direction. |
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| Keywords: | directional coupler multimode waveguide system mode suppression mode conversion gyrotron electron cyclotron heating |
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