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Chin. Phys. B, 2019, Vol. 28(5): 058401    DOI: 10.1088/1674-1056/28/5/058401
INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY Prev   Next  

Equivalent electromagnetic parameters for microwave metamaterial absorber using a new symmetry model

Junming Zhang(张峻铭)1, Donglin He(何东霖)1, Guowu Wang(王国武)1, Peng Wang(王鹏)1, Liang Qiao(乔亮)1, Tao Wang(王涛)1,2, Fashen Li(李发伸)1
1 Key Laboratory for Magnetism and Magnetic Materials(Ministry of Education), Lanzhou University, Lanzhou 730000, China;
2 Key Laboratory of Special Function Materials and Structure Design(Ministry of Education), Lanzhou University, Lanzhou 730000, China
Abstract  

Transmission line theory uses the complex nature of permeability and permittivity of a conventional magnetic absorber to evaluate its absorption properties and mechanism. However, because there is no method to obtain the electromagnetic parameters of a metamaterial-absorber integrated layer (composed of a medium layer and a periodic metal array), this theory is seldom used to study the absorption properties of the metamaterial absorber. We propose a symmetry model to achieve an equivalent complex permittivity and permeability model for the integrated layer, which can be combined with the transmission line theory to calculate metamaterial absorption properties. The calculation results derived from both the transmission line theory and the high-frequency structure simulator are in good agreement. This method will be beneficial in practical investigations of the absorption mechanism of a metamaterial absorber.

Keywords:  metamaterial absorber      equivalent electromagnetic parameters      transmission line theory  
Received:  23 January 2019      Revised:  04 March 2019      Published:  05 May 2019
PACS:  84.40.-x (Radiowave and microwave (including millimeter wave) technology)  
Fund: 

Project supported by the National Natural Science Foundation of China (Grant Nos. 11574122 and 51731001), the Fundamental Research Funds for the Central Universities, China (Grant No. kzujbky-2017-k20), and the Innovation Special Zone Project of National Defence Science and Technology, China.

Corresponding Authors:  Tao Wang     E-mail:  wtao@lzu.edu.cn

Cite this article: 

Junming Zhang(张峻铭), Donglin He(何东霖), Guowu Wang(王国武), Peng Wang(王鹏), Liang Qiao(乔亮), Tao Wang(王涛), Fashen Li(李发伸) Equivalent electromagnetic parameters for microwave metamaterial absorber using a new symmetry model 2019 Chin. Phys. B 28 058401

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