High-Efficiency W-Band Pulsed TWT With Three-Stage Depressed Collector

被引：5

作者：

Zhang, Xiaoqing ^{[1
]}

Feng, Jinjun ^{[1
]}

Cai, Jun ^{[1
]}

Du, Yinghua ^{[1
]}

Dong, Ruitong ^{[1
]}

Yang, Jinsheng ^{[1
]}

机构：

[1] Beijing Vacuum Elect Res Inst, Natl Key Lab Sci & Technol Vacuum Elect, Beijing 100015, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2022年 / 32卷 / 02期

关键词：

Power generation; Bandwidth; Prototypes; Electrodes; Microwave circuits; Wireless communication; Vacuum electronics; Folded waveguide (FWG); multistage depressed collectors (MDCs); traveling wave tubes (TWTs); W-band; DESIGN;

D O I：

10.1109/LMWC.2021.3122124

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 letter presents the design and experimental study of a W-band traveling wave tube (TWT) with an overall efficiency of over 40% using multistage depressed collectors (MDCs). The folded waveguide (FWG) with a high coupling impedance and phase velocity tapering (PVT) circuit has been used to achieve the electronic efficiency of over 10%. Furthermore, a three-stage depressed collector with a high recovery efficiency was designed to enhance the overall efficiency in W-band pulsed TWTs. A prototype tube was then fabricated and tested with a beam current of 193 mA and a beam voltage of 20.8 kV. The testing data shows that the overall efficiency of 40.6% was obtained at over 410 W output power within 5 GHz at 20% duty cycle, with the maximum efficiency of 47%. That is the highest efficiency test results of W-band TWTs reported so far.

引用

页码：121 / 124

页数：4

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