Tapering Vertical Dimension Technique for the Quasi-periodic Folded-Waveguide TWT to Improve the Bandwidth and Efficiency.
In: Journal of Infrared, Millimeter & Terahertz Waves, Jg. 42 (2021-08-01), Heft 8, S. 915-928
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Zugriff:
A tapering vertical dimension technique (TVDT) is proposed for the quasi-periodic folded-waveguide traveling wave tube (FW-TWT) to improve the bandwidth and efficiency. The dispersion characteristics for the concentric arc FW-TWT with the TVDT are analyzed and discussed. When the power of input signal is set as 1 W and the initial beam voltage (current) is set as 4900 V (0.15 A), the peak output power of the proposed FW-TWT with the TVDT can reach 100.9 W at 88 GHz. Accordingly, the corresponding peak electron efficiency is 13.7%. Furthermore, the 3-dB bandwidth (fractional bandwidth) can reach 17 GHz (18.78%) from 82 to 99 GHz, where the output signal is steady and the corresponding frequency spectrum is quite clean. In addition, the performance of the concentric arc FW-TWT with the TVDT is also compared with that of the other quasi-periodic FW-TWTs. [ABSTRACT FROM AUTHOR]
Titel: |
Tapering Vertical Dimension Technique for the Quasi-periodic Folded-Waveguide TWT to Improve the Bandwidth and Efficiency.
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Autor/in / Beteiligte Person: | Wen, Zheng ; Luo, Jirun ; Li, Ying ; Zhu, Min ; Guo, Wei ; Zhu, Fang |
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Zeitschrift: | Journal of Infrared, Millimeter & Terahertz Waves, Jg. 42 (2021-08-01), Heft 8, S. 915-928 |
Veröffentlichung: | 2021 |
Medientyp: | academicJournal |
ISSN: | 1866-6892 (print) |
DOI: | 10.1007/s10762-021-00817-3 |
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