Thin Wideband Radar Absorbers

被引：115

作者：

Fallahi, Arya ^{[1
]}

Yahaghi, Alireza ^{[1
]}

Benedickter, Hans-Rudolf ^{[1
]}

Abiri, Habibollah ^{[2
]}

Shahabadi, Mahmoud ^{[3
]}

Hafner, Christian ^{[1
]}

机构：

[1] ETH, Lab Electromagnet Fields & Microwave Elect, CH-8092 Zurich, Switzerland

[2] Shiraz Univ, Dept Elect Engn, Shiraz, Iran

[3] Univ Tehran, Sch Elect & Comp Engn, Fac Engn, Tehran 1439515, Iran

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2010年 / 58卷 / 12期

关键词：

Binary hill climbing optimization; frequency selective surfaces frequency selective surfaces (FSSs); method of moments (MoM); radar absorbers; transmission line method; FREQUENCY-SELECTIVE SURFACES; ALGORITHMS; SCATTERING; DESIGN; SCREEN;

D O I：

10.1109/TAP.2010.2078482

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A procedure for the optimal design of thin wideband radar absorbers is presented. The resulting absorbers are implemented by printing a frequency selective surface on a lossy perforated substrate. A binary hill climbing optimization scheme with random restart is used to find optimal solutions. The method of moments in conjunction with the transmission line method is used to calculate the fitness of structures designed by the optimizer. The optimization procedure is done in two steps in order to find a structure with best performance in terms of both operation bandwidth and angular stability. Three types of lossy substrate are considered: 1) unmodified radar absorbing substrate, 2) substrate with one circular hole per unit cell, and 3) substrate with several circular holes per unit cell. It is shown that by drilling only one hole - with optimized radius - in each unit cell, a % 100 improvement in terms of operation bandwidth may be obtained. For the case with several holes per unit cell the observed performance was not as good, which might be due to a too rough optimization.

引用

页码：4051 / 4058

页数：8

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