CNC Machined Helically Corrugated Interaction Region for a THz Gyrotron TravelingWave Amplifier

被引：15
作者：
Donaldson, Craig R. [1 ]
Zhang, Liang [1 ]
Beardsley, Mat [2 ]
Harris, Michael [2 ]
Huggard, Peter G. [3 ]
He, Wenlong [1 ]
机构：
[1] Univ Strathclyde, Dept Phys, Scottish Univ Phys Alliance, Glasgow G4 0NG, Lanark, Scotland
[2] STFC Rutherford Appleton Lab, Millimetre Wave Technol Grp, Precis Dev Facil, Didcot OX11 0QX, Oxon, England
[3] STFC Rutherford Appleton Lab, Millimetre Wave Technol Grp, Didcot OX11 0QX, Oxon, England
来源：
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY | 2018年 / 8卷 / 01期
基金：
英国工程与自然科学研究理事会; 英国科学技术设施理事会;
关键词：
Gyro-amplifier; helically corrugated waveguide; WAVE-GUIDE; BAND; TWT; POWER;
D O I：
10.1109/TTHZ.2017.2778944
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：
This paper reports the development of a helically corrugated interaction region (HCIR) for a 100 W gyrotron traveling wave amplifier operating at a central frequency of 0.37 THz. This HCIR has a corrugation amplitude of 42 mu m, with a nominal waveguide diameter of 0.760 mm. The HCIR was made by electroforming copper on a sacrificial aluminum mandrel: the latter was precision CNC milled using a 0.2 mm diameter ball nose cutter. The dispersion characteristics of the HCIR were measured and found to be in good agreement with the analytical calculation and numerical simulation. Measured insertion loss was between 2 and 4 dB.
引用
收藏
页码：85 / 89
页数：5
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