阵馈抛物柱面天线合成超宽带高功率微波

在时域推导了超宽带脉冲空间功率合成的条件,得到了多路脉冲信号在极化方向相同,幅度、波形一致的条件下,可实现最大化功率输出的结论。基于此提出了一种阵馈的抛物柱反射面天线。采用10喇叭单元叠状排列形成一维馈源阵列放置于焦线上,照射抛物柱反射面后形成相干脉冲,在主轴方向合成超宽带高功率微波波束。仿真结果表明,该阵馈天线较最优口径的单馈源天线,远场辐射功率密度提高了87倍以上,且波束宽度由66°减为8°,实现了超宽带高功率微波的高效空间功率合成。

Ultra-wideband high-power microwave pulse synthesis using array-fed parabolic cylinder antenna

We provided an analytical study of ultra-wideband pulse spatial power combination in time domain, and got the conclusion that the multiplex pulses which had the same polarization direction and unified waveform got the maximum output power. And based on that, a linear-array fed parabolic cylinder antenna was proposed. A line array of 10 tacked TEM horns was arranged in the focal-line, which formed 10 coherent beams after illuminating the reflector. An UWB high power microwave beam on boresight was achieved by coherent superposition of these beams. Simulation results showed that compared with the single-fed antenna with the optimalaperture, the designed antenna increased the radiated power density up to 87 times, and decreased the combined beam width from 66°to 8°. Ultra-wideband high-power microwave pulse synthesis was realized effectively through spatial power combination.