Power Enhancement in W-Band Pulsed Folded Waveguide TWT
In: IEEE Transactions on Electron Devices, Jg. 68 (2021-05-01), S. 2504-2508
Online
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Zugriff:
To obtain higher power in ${W}$ -band traveling-wave tubes (TWTs), a modified folded waveguide (FWG) with non-concentric bends is introduced and demonstrated, which has higher coupling impedance compared with the normal FWG structure and is utilized to eliminate the band-edge instability of TWT. Phase velocity tapering (PVT) is also used to improve the interaction efficiency between the beam and the circuit. Furthermore, a higher beam current is used and the corresponding magnetic focusing system is designed to confine the beam. A prototype tube was then fabricated and tested at a beam current of 220 mA and beam voltage of 21.9 kV. The testing data show that this ${W}$ -band TWT is capable of delivering an output power of over 450 W with a 4.5-GHz bandwidth at a duty cycle of 10%, with a maximum power of 647 W and electronic efficiency of 13.4%. That is the highest output power and electronic efficiency test results of ${W}$ -band TWTs reported so far.
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Power Enhancement in W-Band Pulsed Folded Waveguide TWT
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Autor/in / Beteiligte Person: | Wu, Xianping ; Feng, Jinjun ; Du, Yinghua ; Zhang, Xiaoqing ; Dong, Ruitong ; Cai, Jun |
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Zeitschrift: | IEEE Transactions on Electron Devices, Jg. 68 (2021-05-01), S. 2504-2508 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2021 |
Medientyp: | unknown |
ISSN: | 1557-9646 (print) ; 0018-9383 (print) |
DOI: | 10.1109/ted.2021.3068692 |
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