Chen ZHANG, Wei WANG, Tao SONG, Jie HUANG, Yi-Chao CAO, Di-Wei LIU, Min HU, Kai-Chun ZHANG, Zhen-Hua WU, [in Chinese], Ren-Bin ZHONG, Tao ZHAO, Seng GONG, Sheng-Gang LIU. Detailed investigations on double confocal waveguide for a gyro-TWT[J]. Journal of Infrared and Millimeter Waves, 2020, 39(5): 547
- Journal of Infrared and Millimeter Waves
- Vol. 39, Issue 5, 547 (2020)
Fig. 1. 3-D configuration of a double confocal waveguide
Fig. 2. The diagram of the modes in a double confocal waveguide （a） Superposition mode; （b） Ring mode
Fig. 3. Confocal waveguide with spherical reflectors
Fig. 4. The magnitude of electric field of the superposition modes in a double confocal waveguide （a）, （b）, （c） and （d） are the results simulated by commercial CST software; （e）, （f）, （g） and （h） are the theoretical results.
Fig. 5. Normalized beam-wave coupling coefficient versus R b.
Fig. 6. Coordinate systems for the ring mode
Fig. 7. The magnitude of the electric field of the ring mode,（a） and （b） are the results from the commercial CST software; （c） and （d） are the theoretical results.
Fig. 8. Dispersion curve.（a） Dispersion curve in a cylindrical waveguide. （b） Dispersion curve in a single confocal waveguide. （c） Dispersion curve in a double confocal waveguide.
Fig. 9. Variation of diffraction losses of the anti-phase superposition mode TE06 mode with the aperture size.
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Table 1. Cut-off frequency of Eigenmodes
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Table 2. Total loss
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