Experiments on W-band High-Gain Helical-Waveguide Gyro-TWT

被引：4
|
作者：
Samsonov, S. V. [1 ]
Bogdashov, A. A. [1 ]
Denisov, G. G. [1 ]
Gachev, I. G. [1 ]
机构：
[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod, Russia
来源：
2019 INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) | 2019年
基金：
俄罗斯科学基金会;
关键词：
high powervacuum tubes; gyrotron amplifiers; gyrotron travelling-wave tube (gyro-TWT); gyrotron travelling-wave amplifier (gyro-TWA); EFFICIENCY;
D O I：
10.1109/ivec.2019.8745289
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Design, simulation results and first experimental results are presented for a W-band gyro-TWT using helically corrugated waveguides in its microwave circuit. The specific of this gyro-TWT is a sectioning (2 helical-waveguide sections separated by a sub-cutoff drift channel) which enables its operation at the second cyclotron harmonic with a high gain (45-50 dB) and high stability to the spurious oscillations. Using an available superconducting magnet with B-field of 1.9 T the tube was designed to be powered by a 40-kV 0.7-A electron beam with a pitch-factor of 1.3. The 3D PIC simulations predict the maximum output power of 3 kW at about 95 GHz and 1-kW-level bandwidth of 7.2 GHz when driving by a 100-mW input signal.
引用
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页数：2
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