Development of W-band Folded Waveguide Pulsed TWTs

Author

Jinjun Feng ; Jun Cai ; Yinfu Hu ; Xianping Wu ; Yinghua Du ; Jingkai Liu ; Pan Pan ; Hanyan Li

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Vacuum Electron., Beijing Vacuum Electron. Res. Inst., Beijing, China

Volume

61

Issue

6

fYear

2014

fDate

Jun-14

Firstpage

1721

Lastpage

1725

Abstract

W-band TWTs are key devices for high-frequency and high-power amplifiers used in high-resolution imaging applications. This paper presents the design, simulation, and fabrication of W-band pulsed TWTs. For higher power and broader bandwidth, TWTs have been developed using all-metal folded waveguide (FWG) slow-wave structures, diamond-disc windows, and horseshoe-shaped carbonized alumina attenuators. The test results show that W-band FWG pulsed TWTs can reach over 100 W output power with 6.7 GHz bandwidth and over 33 dB saturated gain at 20% duty cycle, while the maximum output power exceeds 200 W.

Keywords

microwave circuits; microwave tubes; slow wave structures; waveguide attenuators; FWG slow-wave structure; W-band folded waveguide pulsed TWT; all-metal folded waveguide slow-wave structure; bandwidth 6.7 GHz; diamond-disc window; high-frequency amplifier; high-power amplifier; high-resolution imaging application; horseshoe-shaped carbonized alumina attenuator; Attenuators; Bandwidth; Electron tubes; Fabrication; Gain; Power generation; Prototypes; Diamond; LIGA; TWTs; W-Band; W-Band.; folded waveguide (FWG);

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2014.2307476

Filename

6786987