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将通常用于超宽带领域的IRA天线应用到辐射波电磁脉冲模拟器中,提出一种基于反射器脉冲辐射天线的核电磁脉冲辐射波模拟器,分析其天线结构,给出四种馈臂形式,通过仿真比较了四种馈臂形式天线的辐射效率、远场和近场波形以及频率增益特性。结果表明:该天线的低频辐射效率有待进一步提高;具有锥形渐缩形式馈臂的天线能产生较好的远场和近场波形。IRA天线相较笼形天线具有体积小、方向性好等优点,如果能进一步提高其低频辐射性能,IRA天线将成为理想的辐射波模拟器天线。
The IRA antenna, which is usually used in the ultra-wideband field, is applied to a radiant wave electromagnetic pulse simulator. A nuclear electromagnetic pulse radiant wave simulator based on a pulsed radiation antenna of a reflector is proposed, and its antenna structure is analyzed. Four types of feeder arms are given Through simulation, the radiation efficiency, far-field and near-field waveforms and frequency gain characteristics of four kinds of antennae are compared. The results show that the low-frequency radiation efficiency of the antenna needs to be further improved. Antennas with cone-shaped tapered arms can produce far-field and near-field waveforms. Compared with the cage antenna, the IRA antenna has the advantages of small size and good directivity. If the IRA antenna can further improve its low-frequency radiation performance, the IRA antenna will become an ideal radiation simulator antenna.