Numerical study of metamaterial absorber and extending absorbance bandwidth based on multi-square patches

被引：85

作者：

Luo, H. ^{[1
,2
]}

Cheng, Y. Z. ^{[1
]}

Gong, R. Z. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Elect Sci & Technol, Wuhan 430074, Peoples R China

[2] Xinyang Normal Univ, Coll Phys & Elect Engn, Xinyang 464000, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL B | 2011年 / 81卷 / 04期

基金：

高等学校博士学科点专项科研基金;

关键词：

Transverse Magnetic; Transverse Electric; Metamaterial Absorber; Patch Structure; Continuous Metal;

D O I：

10.1140/epjb/e2011-20115-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A simple design of metamaterial absorber (MA) was proposed based on a periodic array of metal patch at microwave frequencies. Our design could exhibit absorption of 99.9% confirmed by numerical simulation. Such high narrowband absorption which mainly based on strong electric and magnetic resonances overlapping in a certain frequency range and perfect impedance-matched (z = 1) to the free space. Numerical simulations demonstrate that the MA could achieve very high absorptivity at wide angles of incidence for both transverse electric (TE) wave and transverse magnetic (TM) wave. The absorption band of our device is effectively extended by patterning multi-square patches of different dimension elements with appropriate geometrical parameters in a co-planar. Finally, the composite MA is only 0.4 mm thick, with a maximum absorption of 99.8% at 15.8 GHz, and a full width at half maximum (FWHM) bandwidth of 2 GHz by numerical simulation, which may have potential applications in the detection of explosives and stealth.

引用

页码：387 / 392

页数：6

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