微波暗室用角锥吸波材料外形的设计和分析  

Design and analyze of the figure of pyramid absorber used in microwave chambers

作　　者：吕述平[1] 刘顺华[1] 

机构地区：[1]大连理工大学材料工程系,辽宁大连116024

出　　处：《材料科学与工艺》2007年第4期572-574,578,共4页Materials Science and Technology

摘　　要：从几何光学原理出发,详细分析了电磁波在角锥吸波材料中的传播方式,包括在锥体内部的传播以及相邻锥体之间的反射情况,得出锥体顶角与锥体材料折射率之间的复杂关系,并综合考虑其它影响因素,确定锥体顶角的最佳取值.在锥体外形的设计中还考虑了锥体的总高度和底座高度.三个因素中顶角的确定对锥体外形具有决定性意义,对锥体的吸波能力也有极大影响,因此在锥体外形设计中,需要重视顶角的确定.From the principle of geometrical optics, the mode that electromagnetic wave promulgate in pyramid absorber is analyzed, which include electromagnetic wave promulgate inside the pyramid and reflect between pyramids nearby. The relation of absorber＇ s apical angle and refracting rate is educed, and the optimal value of the vertex angle is confirmed finally considering other influence factors synthetically. The height of chief and base are considered during design of pyramids＇ figure. Among these factors the design of apical angle is the most important which has great effect to absorber＇ s absorption. In this condition, more attertion should be paid for the design of apical angle should during pyramids＇ figure design.

关 键 词：锥体 吸波材料 外形 几何光学原理 

分 类 号：TB34[一般工业技术—材料科学与工程]