A Compact and Lightweight Relativistic Magnetron With Permanent Magnets

IF 4.5 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Electron Device Letters Pub Date : 2025-08-18 DOI:10.1109/LED.2025.3599640

Renjie Cheng;Yuying Wang;Jiaoyin Wang;Yanlin Deng;Bo Zhao;Tingxu Chen;Haiyang Wang;Hao Li;Biao Hu;Tianming Li

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引用次数: 0

Abstract

A novel S-band lightweight relativistic magnetron, packaged with permanent magnets and equipped with a compact axial extraction structure, is proposed. In this design, five alternately arranged anode vanes in a 10-cavity rising-sun magnetron are connected via a ring-like structure to enhance the

$\pi $

-mode coupling capability. This innovative ring extractor significantly reduces the overall radial dimension of the magnetron, making it consistent with the radius of the resonant cavity structure. Namely, the output structure introduces no additional radial size. Consequently, the proposed design effectively balances structural compactness and high conversion efficiency simultaneously. The reduced output aperture enables the use of a lightweight permanent magnet, bringing the total weight—including both magnetron and magnets—to only 20 kg. Finally, experiments have been conducted to validate the device’s performance, which demonstrates that, under a diode voltage of 172 kV, the proposed relativistic magnetron with permanent magnet achieves an average output power of 175 MW with a conversion efficiency of 30.8%. The combination of compact size and relatively high conversion efficiency makes this device particularly suitable for portable high-power microwave applications.

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具有永磁体的紧凑轻便的相对论磁控管

提出了一种新型的s波段轻量化相对论磁控管，该磁控管采用永磁体封装，并配有紧凑的轴向抽吸结构。在本设计中，将10腔旭日磁控管中的5个交替排列的阳极叶片通过环形结构连接起来，以增强$\pi $模式的耦合能力。这种创新的环形提取器显著降低了磁控管的整体径向尺寸，使其与谐振腔结构的半径一致。也就是说，输出结构不引入额外的径向尺寸。因此，所提出的设计有效地平衡了结构紧凑性和高转换效率。减小的输出孔径使得使用轻质永磁体成为可能，使总重量（包括磁控管和磁体）仅为20公斤。实验结果表明，在二极管电压为172 kV的情况下，该永磁相对论磁控管的平均输出功率为175 MW，转换效率为30.8%。紧凑的尺寸和相对较高的转换效率使该器件特别适合便携式高功率微波应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.