Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 50, Issue 20, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/aa65e2
Keywords
metamaterial; rough surface; birefringent
Categories
Funding
- National Natural Science Foundation of China [41474117]
- Science Research Program of Hubei Provincial Department of Education [2014005002]
- Self-determined Research Funds of CCNU from the Colleges'Basic Research and Operation of MOE [CCNU16A02016]
- Key Laboratory of Cognitive Radio and Information Processing, Ministry of Education (Guilin University of Electronic Technology) [CRKL160204]
- Huanggang Normal University Science and Technology Innovation Team Program [201613803]
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In this paper, we propose and fabricate a kind of zigzag birefringent reflective metamaterial, the surface of which is a 1D rough surface. It can realize both multiple absorption and broadband polarization conversion at different frequency ranges of microwave. This metamaterial is made of a ring-shaped metal piece that is deposited on one side of a piece of grounded zigzag dielectric substrate. The absorptivities are 99.4% and 97.3% at 3.32 and 6.87 GHz respectively, and the polarization conversion ratio is more than 90% from 8.43 to 11.55 GHz, when the incident wave illuminates the sample with different polarization angles. A bifunctional device based on this metamaterial can act as either an absorber or a polarizer. This work is of significance to study the electromagnetic properties of rough surface metamaterials and provides an encouraging example in metamaterial design for combining different functions into one device.
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