钢筋网对高功率微波衰减特性的影响

Attenuation characteristics of high power microwave penetrating through reinforcement nets

模拟试验研究结合时域有限差分法,开展了不同直径、不同网孔、不同层间距、不同配筋形式的钢筋网模型对L,S,C,X不同波段高功率微波的衰减特性研究。研究结果表明:不同类型钢筋网对高功率微波有一定的屏蔽效能,当钢筋网的网孔略小于半波长时屏蔽效果好,层间距为四分之一波长的奇数倍时屏蔽效果好,错层配筋比平行配筋屏蔽效果好,不同形式的钢筋网在防护结构中可以合理地综合运用,以达到最佳防护效果。

Attenuation characteristics of High Power Microwave （HPM） with different frequencies （L,S,C,X band） pene- trating through reinforcement nets were studied by simulation tests combined with the finite difference time-domain method in this paper. The research models reflect various kind of reinforcement nets with different diameters, different meshes, different spac ings between layers, and different arrangement. The results show that shielding effectiveness of reinforcement nets against HPM exists. And shielding effectiveness is better when the mesh is smaller than half of the wave-length, or when the spacing between layers is odd number times a quarter of the wave-length, or when the reinforcement nets are arrange is stagger. The reinforcement nets with dissimilar forms can be comprehensively utilized in protective constructions for the best result.