Design of a W-band Gyro-TWT Amplifier With a Lossy Ceramic-Loaded Circuit

被引：68

作者：

Du, Chao Hai ^{[1
,2
]}

Chang, Tsun-Hsu ^{[2
]}

Liu, Pu Kun ^{[1
]}

Huang, Yi Chen ^{[2
]}

Jiang, Pin Xian ^{[2
]}

Xu, Shou Xi ^{[3
]}

Geng, Zhi Hui ^{[3
]}

Hao, Bao Liang ^{[3
]}

Xiao, Liu ^{[3
]}

Liu, Gao Feng ^{[3
]}

Di Li, Zheng ^{[3
]}

Shi, Shao Hui ^{[3
]}

机构：

[1] Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China

[2] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

[3] Chinese Acad Sci, Inst Elect, Key Lab High Power Microwave Sources & Technol, Beijing 100190, Peoples R China

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2013年 / 60卷 / 07期

关键词：

Electron cyclotron maser; gyrotron; lossy ceramic; mode converter; traveling-wave amplifier; TRAVELING-WAVE-TUBE; GAIN; OPERATION;

D O I：

10.1109/TED.2013.2264100

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：

A pulse prototype of a W-band T E-01 mode gyrotron traveling-wave tube (gyro-TWT) amplifier is designed, and it features high gain and broadband capabilities. The T E-01 mode input coupler is constructed by mounting a sapphire pill-box window onto a Y-type mode converter. The high power output window will employ a triple-sapphire-disc configuration to achieve return loss lower than -30 dB over a bandwidth of 8 GHz. To suppress the spurious oscillations and realize high-average power potential, a new lossy ceramic material with weak electric conductivity is loaded in the T E-01 mode cylindrical interaction waveguide. The loss-free output taper is carefully optimized to suppress oscillations and maintain broadband amplification. Employing a magnetic injection gun of beam voltage 70 kV, beam current 3 A, pitch factor 1.5, and axial-velocity spread 5%, theoretical investigation predicts that the gyro-TWT amplifier is of excellent performance, which includes being driven to saturation with input power P-in < 0.4 W, highest efficiency of 32.4%, and the bandwidth of 4.2 GHz with output power exceeding 50 kW.

引用

页码：2388 / 2394

页数：7

共 35 条

[1] Third-harmonic frequency multiplication of a two-stage tapered gyrotron TWT amplifier [J].