高辐射效率超宽谱脉冲辐射天线的设计与实验

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设计了一种采用共面TEM馈电结构的抛物反射面超宽谱脉冲辐射天线,分析了该种馈电结构的阻抗特性与辐射特性。实验表明当馈入电压为3kV、前沿180ps的超宽谱脉冲时,该天线主轴辐射场测试距离与峰值场强之积平均值达到18.3kV,相较于常用的TEM喇叭馈电的超宽带反射面天线,其辐射效率有了显著的提高。 A parabolic reflector wideband pulsed radiation antenna with coplanar TEM feed structure is designed and the impedance and radiation characteristics of the feed structure are analyzed. Experiments show that when the input voltage is 3kV and the front pulse is 180ps, the average of the product of the test distance and the peak field strength of the antenna main beam reaches 18.3kV. Compared with the common TEM horn fed ultra-wideband reflection Antenna, the radiation efficiency has been significantly improved.
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