Portal de Periódicos da CAPES

PERFECT METAMATERIAL ABSORBER WITH DUAL BANDS

2010; Volume: 108; Linguagem: Inglês

10.2528/pier10071409

1559-8985

Minhua Li, Helin Yang, Xi-Wen Hou, Yan Tian, Dong-Yun Hou,

Antenna Design and Analysis

In this paper, we present the design, simulation, and measurement of a dual-band metamaterial absorber in the microwave region.Simulated and experimental results show that the absorber has two perfect absorption points near 11.15 GHz and 16.01 GHz.Absorptions under different polarizations of incident EM waves are measured with magnitude of over 97% at low-frequency peak and 99% at high-frequency peak respectively.Current distribution at the dual absorptive peaks is also given to study the physical mechanism of power loss.Moreover, it is verified by experiment that the absorptions of this kind of metamaterial absorber remain over 90% at the low-frequency peak and 92% at the high-frequency peak with wide incident angles ranging from 0 • to 60 • for both transverse electric wave and transverse magnetic wave.