Simulation and experimental study on the use of shaped charge jet as transient antennas for radiating electromagnetic pulses

IF 5 Q1 ENGINEERING, MULTIDISCIPLINARY

Defence Technology(防务技术) Pub Date : 2025-05-01 DOI:10.1016/j.dt.2024.12.012

Jiahui Guo , Bin Ma , Zhengxiang Huang , Yong Peng , Xin Jia

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引用次数: 0

Abstract

In this study, the potential application of shaped charge jets as transient antennas for electromagnetic signal transmission was explored and an electromagnetic pulse radiation system with a shaped charge jet as a transient antenna was proposed. During the research, crucial characteristics of the transient antenna formed by a shaped charge with a 30 mm diameter, such as resonant frequency, radiation pattern, and radiation efficiency, were evaluated. The typical shaped charge jet morphology was obtained based on the simulations, in which it could insight the dynamic behavior of the shaped charge jet selected. An equivalent model experiment was employed to test the radiation efficiency, and it showed that a shorting pin loading method could increase the relative bandwidth of the jet antenna to 32.8%, and the experimental results correlate with the theoretical predictions for half-wave dipole antennas reasonably well. Additionally, variations in the diameter of the shaped charge jet were found to affect the input impedance and impedance bandwidth, while the length of the jet influenced the resonant frequency of the antenna. This suggests that altering these parameters can achieve reconfigurability of the jet antenna.

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聚能射流作为瞬态天线辐射电磁脉冲的仿真与实验研究

本文探讨了聚能射流作为瞬态天线在电磁信号传输中的潜在应用，提出了一种以聚能射流作为瞬态天线的电磁脉冲辐射系统。在研究过程中，对直径为30mm的聚能形成的瞬态天线的谐振频率、辐射方向图和辐射效率等关键特性进行了评估。仿真得到了典型的聚能射流形态，可以直观地了解所选聚能射流的动态特性。利用等效模型实验对天线的辐射效率进行了测试，结果表明，采用短引脚加载方式可使天线的相对带宽提高到32.8%，实验结果与半波偶极子天线的理论预测吻合较好。此外，聚能射流直径的变化会影响输入阻抗和阻抗带宽，而射流长度会影响天线的谐振频率。这表明，改变这些参数可以实现喷气天线的可重构性。

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

Defence Technology(防务技术) Mechanical Engineering, Control and Systems Engineering, Industrial and Manufacturing Engineering

CiteScore

8.70

自引率

0.00%

发文量

728

审稿时长

25 days

期刊介绍： Defence Technology, a peer reviewed journal, is published monthly and aims to become the best international academic exchange platform for the research related to defence technology. It publishes original research papers having direct bearing on defence, with a balanced coverage on analytical, experimental, numerical simulation and applied investigations. It covers various disciplines of science, technology and engineering.