Four-Port Folded Waveguide Slow Wave Structure for W-Band 1-kW Pulsed Traveling Wave Tube

IF 4.1 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Electron Device Letters Pub Date : 2024-11-25 DOI:10.1109/LED.2024.3505606

Xiaoqing Zhang;Jun Cai;Xuankai Zhang;Yinghua Du;Chang Gao;Hanshuo Mu;Jinjun Feng

引用次数: 0

Abstract

This letter presents the development of a W-band, 1-kW pulsed traveling wave tube (TWT) featuring a pencil beam focused by a periodic permanent magnet (PPM) system with the four-port structure, designed to reduce the inner diameter of the magnetic field system. By employing the four-port slow-wave structure, the inner radius of the PPM system was reduced by approximately 25%, leading to an increase in the axial magnetic field amplitude from 0.6T to 0.8T. This enhancement allows for a substantial increase in the beam current at the same operating voltage. The assembled W-band, 1-kW TWT was tested at a beam current of 410mA and a beam voltage of 21.65kV. Testing demonstrated that the TWT achieved over 1kW of output power with a 1.3GHz bandwidth, with a peak output power of 1,130W.

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来源期刊

IEEE Electron Device Letters 工程技术-工程：电子与电气

CiteScore

8.20

自引率

10.20%

发文量

551

审稿时长

1.4 months

期刊介绍： IEEE Electron Device Letters publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects, involving insulators, metals, organic materials, micro-plasmas, semiconductors, quantum-effect structures, vacuum devices, and emerging materials with applications in bioelectronics, biomedical electronics, computation, communications, displays, microelectromechanics, imaging, micro-actuators, nanoelectronics, optoelectronics, photovoltaics, power ICs and micro-sensors.