Mixed-Modes Conversion Method for Dual-Mode Relativistic Backward-Wave Oscillators

In this letter, a dual-cavity TM 01 and TM 02 mixed modes to TM 01 mode converter is proposed for a dual-mode relativistic backward-wave oscillator (RBWO) application. This converter is more compact than the conventional converters and the TM 02 mode is cutoff in the output waveguide, which forces t...

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Published in:IEEE microwave and wireless components letters 2021-11, Vol.31 (11), p.1243-1246
Main Authors: Gui, Youyou, Xiao, Renzhen, Li, Jiawei, Shao, Hao, Shi, Yanchao, Zhang, Yuchuan, Song, Zhimin, Wang, Huida, Bai, Xianchen, Sun, Jun
Format: Article
Language:English
Subjects:
Bandwidth
Converters
Dual-mode relativistic backward-wave oscillator (RBWO)
high-power microwave (HPM)
Microwave oscillators
Microwave theory and techniques
mixed-modes converter
Oscillators
Pulse duration
Relativistic effects
Structural engineering
Transmission line matrix methods
Waveguides
Wireless communication
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cited_by cdi_FETCH-LOGICAL-c336t-803dbe388f926784672c9b4fc2d4dd101bd75ad10d530c2a7a3a8570e247d1ee3
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container_end_page 1246
container_issue 11
container_start_page 1243
container_title IEEE microwave and wireless components letters
container_volume 31
creator Gui, Youyou
Xiao, Renzhen
Li, Jiawei
Shao, Hao
Shi, Yanchao
Zhang, Yuchuan
Song, Zhimin
Wang, Huida
Bai, Xianchen
Sun, Jun
description In this letter, a dual-cavity TM 01 and TM 02 mixed modes to TM 01 mode converter is proposed for a dual-mode relativistic backward-wave oscillator (RBWO) application. This converter is more compact than the conventional converters and the TM 02 mode is cutoff in the output waveguide, which forces the purity of the output TM 01 mode to 100%. Especially, the converter is adjustable, and by simply replacing the waveguides in it, the converter can be well-matched to different proportional mixed modes. Electromagnetic simulation results show that the conversion efficiency of the converter is higher than 99%. The converter is validated in the high-power microwave (HPM) generation experiment of the dual-mode RBWO and a conversion efficiency of 98% is realized. A pure TM 01 microwave with power of 4.6 GW and pulse duration of 42 ns at 10 GHz was obtained.
doi_str_mv 10.1109/LMWC.2021.3112625
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ispartof IEEE microwave and wireless components letters, 2021-11, Vol.31 (11), p.1243-1246
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2771-957X
1558-1764
2771-9588
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source IEEE Xplore (Online service)
subjects Bandwidth
Converters
Dual-mode relativistic backward-wave oscillator (RBWO)
high-power microwave (HPM)
Microwave oscillators
Microwave theory and techniques
mixed-modes converter
Oscillators
Pulse duration
Relativistic effects
Structural engineering
Transmission line matrix methods
Waveguides
Wireless communication
title Mixed-Modes Conversion Method for Dual-Mode Relativistic Backward-Wave Oscillators
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