Suppression of Specular Reflections by Metasurface with Engineered Nonuniform Distribution of Reflection Phase.

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Bibliographic Details
Title:	Suppression of Specular Reflections by Metasurface with Engineered Nonuniform Distribution of Reflection Phase.
Authors:	Yang, Xin Mi^1,2 yangxinmi@suda.edu.cn, Jiang, Ge Lan¹ jianggelan@163.com, Liu, Xue Guan¹ txdzlxg@suda.edu.cn, Weng, Cheng Xiang³ cxweng@emfield.org
Source:	International Journal of Antennas & Propagation. 5/18/2015, Vol. 2015, p1-8. 8p.
Subjects:	Reflections, Specular microscopy, Frequencies of oscillating systems, Plane wavefronts, Polarization (Electrochemistry)
Abstract:	We make preliminary investigations on a new approach to reducing radar cross section (RCS) of conducting objects. This approach employs novel planar metasurfaces characterizing nonuniform distribution of reflection phase. The operation principle of this approach and the design rule of the associated metasurfaces are explained using a simplified theoretical model. We then present a design example of such metasurfaces, in which three-layer stacked square patches with variable sizes are utilized as the reflecting elements. The proposed RCS-reduction approach is verified by both numerical simulations and measurements on the example, under the assumption of normal plane wave incidence. It is observed that, in a fairly wide frequency band (from 3.6 to 5.5 GHz), the presented example is capable of suppressing the specular reflections of conducting plates significantly (by more than 7 dB) for two orthogonal incident polarizations. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	We make preliminary investigations on a new approach to reducing radar cross section (RCS) of conducting objects. This approach employs novel planar metasurfaces characterizing nonuniform distribution of reflection phase. The operation principle of this approach and the design rule of the associated metasurfaces are explained using a simplified theoretical model. We then present a design example of such metasurfaces, in which three-layer stacked square patches with variable sizes are utilized as the reflecting elements. The proposed RCS-reduction approach is verified by both numerical simulations and measurements on the example, under the assumption of normal plane wave incidence. It is observed that, in a fairly wide frequency band (from 3.6 to 5.5 GHz), the presented example is capable of suppressing the specular reflections of conducting plates significantly (by more than 7 dB) for two orthogonal incident polarizations. [ABSTRACT FROM AUTHOR]
ISSN:	16875869
DOI:	10.1155/2015/560403