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- W3141444984 abstract "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." @default.
- W3141444984 created "2021-04-13" @default.
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- W3141444984 date "2021-05-01" @default.
- W3141444984 modified "2023-09-25" @default.
- W3141444984 title "Power Enhancement in <i>W</i>-Band Pulsed Folded Waveguide TWT" @default.
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- W3141444984 doi "https://doi.org/10.1109/ted.2021.3068692" @default.
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