Helically corrugated interaction regions for W-band gyrotron-Traveling Wave Amplifiers

被引：0
|
作者：
Donaldson, Craig R. [1 ]
Zhang, Liang [1 ]
Robertson, Craig W. [1 ]
MacInnes, Philip [1 ]
Whyte, Colin G. [1 ]
机构：
[1] Univ Strathclyde, Dept Phys, SUPA, Glasgow, Lanark, Scotland
来源：
2023 53RD EUROPEAN MICROWAVE CONFERENCE, EUMC | 2023年
关键词：
gyrotron traveling wave amplifier; broadband amplification; helically corrugated waveguide; frequency-swept; GUIDE;
D O I：
10.23919/EuMC58039.2023.10290435
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：
The helically corrugated interaction region (HCIR) is able to produce an almost ideal dispersion for microwave oscillators/amplifiers. The HCIR is studied and presented in this paper with particular application in a W-band broadband, kWlevel gyrotron traveling wave amplifier (gyro-TWA). The dispersion of the waveguide was calculated, and measurements of a manufactured HCIR showed good agreement with predictions. Numerical simulations of the beam-wave interaction in different circuits showed stable output can be achieved in two gain regions separated by a sever (with purposeful reflections at each end of the circuit). The demonstration of a gyro-TWA based on the HCIR is described with a 3-dB bandwidth of over 5.5 GHz with more than 3.4 kW and the gain was around 36-38 dB. The work presented in this paper will widen the capability of the gyro-TWA from single pulse to high PRF operation.
引用
收藏
页码：352 / 355
页数：4
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