Design of a Novel Dual-Band Gyro-TWT

被引：12

作者：

Tang, Yong ^{[1
]}

Luo, Yong ^{[1
]}

Xu, Yong ^{[1
]}

Yan, Ran ^{[1
]}

Jiang, Wei ^{[1
]}

Zheng, Yuan ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2014年 / 61卷 / 11期

关键词：

Dual-band; gyrotron-traveling-wave tube (gyro-TWT); particle-in-cell (PIC) simulation; spurious competing modes; wall resistivity; TRAVELING-WAVE AMPLIFIER; GAIN; LOSSES; GUIDE; TUBE;

D O I：

10.1109/TED.2014.2353851

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 design of a novel dual-band (Ku/Ka) gyrotron-traveling- wave tube is presented in this paper. As the gain per-unit of the Ku-band is lower than Ka-band's, three special methods have been adopted: 1) the two input couplers are separated in space; 2) the magnetron injection gun magnetic compression ratio of the Ku-band is greater than Ka-band's; and 3) the Ku-band beam current and velocity ratio are greater than Ka-band's. Wall resistivity is employed to suppress the potential spurious competing modes. The 3-D particle-in-cell simulation predicts a maximum output power of 238/158 kW, maximum gain of 45.5/50.4 dB, and 3-dB bandwidth similar to 2.1/3.4 GHz, respectively, for Ku-band and Ka-band. After careful optimization and under a compromise consideration, the output window is also designed to ensure the device has a bandwidth of 1.5/2.5 GHz for Ku/Ka-band with a peak power > 100 kW.

引用

页码：3858 / 3863

页数：6

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