Stability Analysis of a Planar Multiple-Beam Circuit for W-Band High-Power Extended-Interaction Klystron

被引：48

作者：

Lu, Suye ^{[1
,2
]}

Zhang, Changqing ^{[3
]}

Wang, Shuzhong ^{[3
]}

Wang, Yong ^{[3
]}

机构：

[1] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

[2] Chinese Acad Sci, Inst Elect, Beijing 100190, Peoples R China

[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 | 2015年 / 62卷 / 09期

基金：

美国国家科学基金会;

关键词：

Barbell cavity; extended-interaction klystron (EIK); mode competition; particle-in-cell (PIC) simulation; planar multiple beams; ELECTRON-BEAM; CAVITY;

D O I：

10.1109/TED.2015.2435031

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：

Circuit analysis of a multiple-beam version of a high-power extended-interaction klystron is performed. The circuit is based on the barbell cavity with five coplanar electron beams across the transverse section of the cavity. Although the basic circuit design is straightforward, stable operation is challenging due to the mode competition and the self-oscillation in an oversized multiple-gap cavity driven by multiple beam sources. The 3-D particle-in-cell (PIC) simulation technology and the space-charge wave theory were exploited to analyze the stability. The physical design of the interaction system was accomplished with the beam parameters of voltage 19 kV and of overall current 4 A (0.8 A x 5). PIC results show that a power of 11.28 kW can be achieved at a frequency of 94.48 GHz with an instantaneous 3-dB bandwidth of 160 MHz. The corresponding gain and electric efficiency are 55.75 dB and 14.84%, respectively.

引用

页码：3042 / 3048

页数：7

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