Millimeter wave traveling wave tubes for the 21st Century
Millimeter wave traveling wave tubes for the 21st Century
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DOI：
10.1080/09205071.2020.1848643
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发表时间：
2020-11
影响因子：
1.3
通讯作者：
C. Paoloni;D. Gamzina;R. Letizia;Yuan Zheng;N. Luhmann
中科院分区：
文献类型：
--
作者：
C. Paoloni;D. Gamzina;R. Letizia;Yuan Zheng;N. Luhmann
行波管正在迅速发展，与毫米波波段(80-300 GHz)的固态器件相比，行波管提供了前所未有的功率水平，从而实现了广泛的应用。如果毫米波的高功率可以从紧凑型光源获得，无线通信、成像、等离子诊断、医疗保健和许多其他领域将获得实质性的特征。事实证明，制造技术的发展对于为毫米波真空电子器件引入新的拓扑和结构至关重要，这些拓扑和结构与短波长所规定的尺寸兼容，但由于容差较小，短波长带来了巨大的制造挑战。本文综述了目前应用最广泛的真空电子器件之一--行波管的原理、发展和现状。行波管的宽频带、高增益特性使其成为毫米波和太赫兹频率高功率的最有前途的解决方案。
Traveling wave tubes are rapidly evolving to provide unprecedented power level in comparison to solid state devices in the millimeter waves region of the spectrum (80–300 GHz) thus enabling a wide range of applications. Wireless communications, imaging, plasma diagnostics, healthcare and many others will gain substantial features if high power at millimeter waves would be available from compact sources. The development of fabrication technologies is proving crucial for introducing new topologies and structures for millimeter wave vacuum electronic devices, compatible with the dimensions dictated by the short wavelength that poses substantial manufacturing challenges due to tight tolerances. This review paper will provide an overview of the principles, evolution and state of the art of one of the most widely utilized vacuum electronic device, the traveling wave tube (TWT). The wide band, high gain features of TWTs make those devices the most promising solutions for high power at millimeter waves and THz frequencies.