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一种高效L波段同轴三周期相对论切伦科夫振荡器。

A high-efficiency L-band coaxial three-period relativistic Cherenkov oscillator.

作者信息

Ge Xing-Jun, Zhang Peng, Zhao Chen-Yu, Luo Zhi-Cheng, Chen Si-Yao, Yang Han-Wu, Zhang Jun

机构信息

College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, Hunan, 410073, People's Republic of China.

出版信息

Sci Rep. 2019 Aug 22;9(1):12244. doi: 10.1038/s41598-019-47496-8.

DOI:10.1038/s41598-019-47496-8
PMID:31439902
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6706425/
Abstract

Miniaturization is one of the important research directions of low frequency high power microwave sources. This paper presents a three-period coaxial slow-wave structure L-band high-power microwave source. Because the coaxial Quasi-TEM mode has no cut-off frequency, the radial size of the device can be reduced. At the same time, in order to reduce the transverse dimension, the coaxial extractor structure is introduced to realize the longitudinal mode selection and improve the conversion efficiency of the device. In simulation, the device obtains the microwave output with the central frequency of 1.53 GHz, the average power of 3.3 GW and the efficiency of 40%. By optimizing the scheme of electron beam collection, the phenomenon of pulse shortening is effectively suppressed. In the experiment, the device obtains the microwave output with the central frequency of 1.52 GHz, the average power of 3 GW, the efficiency of 33% and the pulse width of 40 ns.

摘要

小型化是低频高功率微波源的重要研究方向之一。本文提出了一种三周期同轴慢波结构L波段高功率微波源。由于同轴准TEM模没有截止频率，因此可以减小器件的径向尺寸。同时，为了减小横向尺寸，引入同轴提取器结构以实现纵向模式选择并提高器件的转换效率。在模拟中，该器件获得了中心频率为1.53 GHz、平均功率为3.3 GW且效率为40%的微波输出。通过优化电子束收集方案，有效抑制了脉冲缩短现象。在实验中，该器件获得了中心频率为1.52 GHz、平均功率为3 GW、效率为33%且脉冲宽度为40 ns的微波输出。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/d3fb3aedfc5a/41598_2019_47496_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/b86a7c97debc/41598_2019_47496_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/53af16b698ee/41598_2019_47496_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/6cc7b5efa19b/41598_2019_47496_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/5e5ca066ca6a/41598_2019_47496_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/254e7e7f19ee/41598_2019_47496_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/69c119624c03/41598_2019_47496_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/bcf2c199780b/41598_2019_47496_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/411f31200031/41598_2019_47496_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/37b039905e81/41598_2019_47496_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/43417defdd96/41598_2019_47496_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/a659b9f139ad/41598_2019_47496_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/d3fb3aedfc5a/41598_2019_47496_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/b86a7c97debc/41598_2019_47496_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/53af16b698ee/41598_2019_47496_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/6cc7b5efa19b/41598_2019_47496_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/5e5ca066ca6a/41598_2019_47496_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/254e7e7f19ee/41598_2019_47496_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/69c119624c03/41598_2019_47496_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/bcf2c199780b/41598_2019_47496_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/411f31200031/41598_2019_47496_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/37b039905e81/41598_2019_47496_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/43417defdd96/41598_2019_47496_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/a659b9f139ad/41598_2019_47496_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee19/6706425/d3fb3aedfc5a/41598_2019_47496_Fig12_HTML.jpg

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