Terahertz Gyro-BWO Using a High-Order Whispering-Gallery mode
- Resource Type
- Conference
- Authors
- Pan, Shi; Du, Chao-Hai; Gao, Zi-Chao; Li, Fan-Hong; Bian, Hui-Qi; Liu, Pu-Kun
- Source
- 2019 International Vacuum Electronics Conference (IVEC) Vacuum Electronics Conference (IVEC), 2019 International. :1-2 Apr, 2019
- Subject
- Aerospace
Communication, Networking and Broadcast Technologies
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
THz gyro-BWO
whispering-gallery mode
cathode-end output circuit
- Language
Gyrotron backward-wave oscillators (gyro-BWOs) extending to the terahertz (THz) band require high-order modes to improve the power-handling capability. Here we investigate a THz high-order whispering-gallery mode (WGM) gyro-BWO equipped with a cathode-end output circuit. The segment-tapered circuit contributes to uplifting the start-oscillation currents of the near-cutoff competing mode and reclaiming the dominance of operating mode. The scheme is applicable to other high-order mode gyro-BWOs with broadband tuning.