fractal metamaterial absorber with three-order oblique cross dipole slot structure and its application for in-band rcs reduction of array antennas
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ID: 147346
2014
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Abstract
To miniaturize the perfect metamaterial absorber, a fractal three-order oblique cross dipole slot structure is proposed and investigated in this paper. The fractal perfect metamaterial absorber (FPMA) consists of two metallic layers separated by a lossy dielectric substrate. The top layer etched a three-order oblique fractal-shaped cross dipole slot set in a square patch and the bottom one is a solid metal. The parametric study is performed for providing practical design guidelines. A prototype with a thickness of 0.0106λ (λ is the wavelength at 3.18 GHz) of the FPMA was designed, fabricated, measured, and is loaded on a 1×10 guidewave slot array antennas to reduce the in-band radar cross section (RCS) based on their surface current distribution. Experiments are carried out to verify the simulation results, and the experimental results show that the absorption at normal incidence is above 90% from 3.17 to 3.22GHz, the size for the absorber is 0.1λ×0.1λ, the three-order FPMA is miniaturized 60% compared with the zero-order ones, and the array antennas significantly obtain the RCS reduction without the radiation deterioration.
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li2014radioengineeringfractal
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| Authors | ;Sijia Li;Xiangyu Cao;Jun Gao;Yuejun Zheng;Di Zhang;Hongxi Liu |
| Journal | molecular therapy : the journal of the american society of gene therapy |
| Year | 2014 |
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