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Design and Stability Analysis of a High-Order Mode-Staggered Double Vane Traveling Wave Tube With Two Pencil Beams at G-Band.
- Source :
-
IEEE Transactions on Plasma Science . Sep2021, Vol. 49 Issue 9, Part 2, p3029-3034. 6p. - Publication Year :
- 2021
-
Abstract
- In this article, design of a high-order-mode (TE20-mode) staggered double vane (SDV) traveling wave tube amplifier (TWTA) with two pencil electron beams is presented. Since, the dimensions are larger when compared to fundamental mode TWTAs, the high-power capacity can be achieved. Meanwhile, several ways to suppress the fundamental mode competition and improve the stability of our high-order-mode TWTA are studied thoroughly, such as limiting the gain of each stage and using metal or wave-absorbing material columns. A three-stage TE20-mode SDV TWTA with aluminum nitride column at the center of vanes is simulated to get an over 145-W peak power with a corresponding gain of 32.5 dB. The frequency spectrum is pure at 220 GHz and the output signal is a stable TE20-mode signal. The bandwidth reaches about 38 GHz. The results show that high-order-mode operation can develop the high-power capacity vacuum electron devices at terahertz band. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00933813
- Volume :
- 49
- Issue :
- 9, Part 2
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Plasma Science
- Publication Type :
- Academic Journal
- Accession number :
- 153812227
- Full Text :
- https://doi.org/10.1109/TPS.2021.3100523