To the theory of gyrotrons with confocal resonators

GS Nusinovich - Physics of Plasmas, 2019 - pubs.aip.org
In recent years, in addition to the development of traditional gyrotrons with an axially
symmetric interaction space, there has been strong interest in developing gyrotrons, whose …

Theoretical analysis and PIC simulation of a 220-GHz second-harmonic confocal waveguide gyro-TWT amplifier

C An, D Zhang, J Zhang… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Confocal gyrotron traveling-wave tube (gyro-TWT) is capable of operating in higher order
modes, so it is attractive in high-frequency (> 100 GHz) band. However, the reported …

Broadband high-efficiency input coupler with mode selectivity for a W-band confocal gyro-TWA

J Wang, Y Yao, Q Tian, H Li, G Liu… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
A 0.1-THz input coupler for HE04 mode confocal gyrotron traveling-wave amplifiers is
presented. A high-order HE04 mode in confocal waveguide is efficiently excited from a TE10 …

Initial investigation on diffractive-wave feedback mechanism of confocal gyro-TWAs

Y Yao, J Wang, G Liu, H Li, K Dong… - IEEE Electron Device …, 2018 - ieeexplore.ieee.org
In this letter, diffractive-wave feedback mechanism of confocal gyrotron travelling-wave
amplifiers (gyro-TWAs) is presented and verified in cold-test experiments for the first time …

Comparative Study on the Nonlinear Theory and PIC Simulation of Confocal Gyro-TWAs

Y Yao, X Dai, R Yan, Y Luo, J Wang… - … on Electron Devices, 2022 - ieeexplore.ieee.org
The large-signal theory, including the BEAMLETS model and averaged coupling impedance
formalism, of confocal gyrotron traveling-wave amplifiers (gyro-TWAs) with diffractive loss …

HE04 Mode Exciters With Flat Transmission and High Mode Purity for Confocal Gyro-TWAs

Y Yao, J Wang, G Liu, H Li, W Jiang… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
A new topology to excite the HE 04 mode in wide bandwidth for confocal gyro-TWAs is
presented. The mode exciter consists of a TE 04 mode exciter and a TE 04–HE 04 transition …

[PDF][PDF] 双共焦波导结构二次谐波太赫兹回旋管谐振腔设计

关晓通, 傅文杰, 鲁钝, 杨同斌, 鄢扬, 袁学松 - 物理学报, 2020 - researching.cn
准光共焦波导具有功率容量大, 模式密度低的特点, 能够有效地减少模式竞争对回旋管互作用的
影响, 有利于高次谐波太赫兹回旋管的设计. 为提高太赫兹准光回旋管的互作用效率 …

High-Gain Confocal gyro-TWAs With a Nonuniform Distributed Circuit

Y Yao, J Wang, Y Luo, G Shu - 2019 International Vacuum …, 2019 - ieeexplore.ieee.org
We report the non-uniform distributed confocal travelling-wave amplifier (gyro-Twa) for high-
gain operation at the first time. The circuit applies a long section with heavy circuit loss to the …

Experimental Study on rf Circuits of Confocal Gyrotron Travelling-Wave Amplifiers

Y Yao, J Wang, G Liu, B Zhang, K Chen… - Journal of Infrared …, 2018 - Springer
In this paper, cold-test experiments to demonstrate the diffractive-wave feedback mechanism
in confocal gyrotron travelling-wave amplifiers (gyro-TWAs) are carefully designed and …