高功率超宽带组合天线的设计与实验  

Design and experiment of ultra-wideband combined antennafor high-power microwave

作　　者：吴昊 屈劲[2,3] 陈世韬 余川[2,3] 刘良[1,2] 石小燕 Wu Hao;Qu Jin;Chen Shitao;Yu Chuan;Liu Liang;Shi Xiaoyan(Graduate School of China Academy of Engineering Physics,Mianyang 621900,China;Institute of Applied Electronics,CAEP,Mianyang 621900,China;Science and Technology on High Power Microwave Laboratory,CAEP,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院研究生院,四川绵阳621900 [2]中国工程物理研究院应用电子学研究所,四川绵阳621900 [3]中国工程物理研究院高功率微波技术重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2023年第7期83-88,共6页High Power Laser and Particle Beams

基　　金：高功率微波重点实验室基金项目(61426050303-2)。

摘　　要：为满足高功率纳秒脉冲的发射需求,设计了一种适用于高功率微波的超宽带组合天线,对比了将点馈式巴伦和直馈式巴伦应用于高功率超宽带组合天线后天线的驻波曲线和表面电场分布情况,分析了组合天线阻抗与尺寸的关系,利用Klopfenstein阻抗渐变线降低反射,利用可调平板调整天线磁偶极子面积以提升天线低频性能,并通过驻波测试实验加以验证。在此基础上,进行了高功率微波实验,在全底宽3 ns、峰-峰值121 kV、中心频率329 MHz高功率双极脉冲的激励下,可实现功率容量73 MW,有效电压增益1.97。To meet the requirement of high-power nanosecond pulse emission,an ultra-wideband combinedantenna for high-power microwave is designed.Voltage standing wave ratio(VSWR)and electric field distribution ofhigh-power ultra-wideband combined antenna with point-fed balun and tapered-slot balun are compared.Therelationship between characteristic impedance and dimensions of the combined antenna is analyzed.Klopfensteinimpedance taper is used to reduce reflection.The size of the magnetic dipole is optimized by adjustable plate toimprove the low frequency performance of the antenna,and validated by experiment for VSWR testing.On this basis,high-power microwave experiment is performed.With excitation of the high-power bipolar pulse whose bottom widthis 3 ns,peak-to-peak value is 121 kV and center frequency is 329 MHz,the power handling capacity of the antenna is73 MW,effective potential gain is 1.97.

关 键 词：高功率微波 超宽带 组合天线 阻抗渐变 磁偶极子 

分 类 号：TN822[电子电信—信息与通信工程]