Jun Lü, Baoliang Hao, Jianyong Kou, Jianling Cui, Zhongzheng Zhou. Study on slow wave structure and interaction of 2−18 GHz ultra-wide band traveling-wave tube[J]. High Power Laser and Particle Beams, 2021, 33(11): 113001
- High Power Laser and Particle Beams
- Vol. 33, Issue 11, 113001 (2021)
Fig. 1. High frequency slow wave structure in a period
Fig. 2. n th harmonic longitudinal electric field
Fig. 3. Positive and negative dispersion at synchronization region
Fig. 4. High frequency slow wave structures
Fig. 5. High frequency slow wave structures with positive and negative dispersion and different pitch
Fig. 6. Characteristics of cooling parameters varying with frequency
Fig. 7. Comparison of dispersion curves of different pitch P 1 and P 0
Fig. 8. Double pitch step structure of helix 1
Fig. 9. Fundamental output power and 2nd harmonic ratio at L 1/L i
Fig. 10. Fundamental output power and 2nd harmonic ratio at different lengths of L 1
Fig. 11. Fundamental output power and 2nd harmonic ratio at different pitch of P 1
Fig. 12. Comparison of harmonics, saturated output power and electronic efficiency of uniform and periodic magnetic field
Fig. 13. Electron trajectories of uniform and periodic magnetic field at 18 GHz
Fig. 14. Comparison of harmonics, saturated output power and electronic efficiency of helix 1-1 and helix 1-2
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Table 1. The basic parameters
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Table 2. High frequency slow wave structure parameters
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