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A band enhanced metamaterial absorber based on E-shaped all-dielectric resonators
oleh: Liyang Li, Jun Wang, Hongliang Du, Jiafu Wang, Shaobo Qu, Zhuo Xu
Format: | Article |
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Diterbitkan: | AIP Publishing LLC 2015-01-01 |
Deskripsi
In this paper, we propose a band enhanced metamaterial absorber in microwave band, which is composed of high-permittivity E-shaped dielectric resonators and metallic ground plate. The E-shaped all-dielectric structure is made of high-temperature microwave ceramics with high permittivity and low loss. An absorption band with 1 GHz bandwidth for both TE and TM polarizations are observed. Moreover, the absorption property is stable under different incident angles. The band enhanced absorption is caused by different resonant modes which lie closely in the absorption band. Due to the enhanced localized electric/magnetic fields at the resonant frequencies, strong absorptions are produced. Our work provides a new method of designing high-temperature and high-power microwave absorbers with band enhanced absorption.