A Mode-Suppression Circuit for the Ka-Band $\text{TE}_{01}$ Gyrotron Travelling Wave Tube: Design and Measurement
- Resource Type
- Conference
- Authors
- Ma, Yuan; Liu, Guo; Cao, Yingjian; Wang, Weijie; Wang, Yu; Jiang, Wei; Yao, Yelei; Wang, Jianxuan; Luo, Yong
- Source
- 2023 24th International Vacuum Electronics Conference (IVEC) Vacuum Electronics Conference (IVEC), 2023 24th International. :1-2 Apr, 2023
- Subject
- Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Traveling wave tubes
Simulation
Gyrotrons
Loss measurement
Stability analysis
Circuit stability
Vacuum electronics
Mode-suppression circuit
gyrotron travelling wave tube
backward wave oscillation
- Language
In this paper, the design and measurement of a mode-suppression circuit (MSC) applied in the nonlinear interaction region of a Ka-band gyrotron travelling wave tube (gyro-TWT) are presented. The proposed MSC is capable to suppress the spurious $\text{TE}_{11}$ mode with no influence on the operating $\text{TE}_{01}$ mode which helps to improve the tube stability for the high-power operation. Simulation result shows MSC can provide a loss of more than -5 dB around 23.1 GHz for the spurious $\text{TE}_{11}$ mode which agrees well with the measured results.