| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Grating-Coupled Waveguide Cloaking |
| WANG Jia-Fu1, QU Shao-Bo1,2**, XU Zhuo2, MA Hua1,2, WANG Cong-Min1, XIA Song2, WANG Xin-Hua1, ZHOU Hang1 |
1College of Science, Air Force Engineering University, Xi'an 710051
2Electronic Materials Research Laboratory, Xi'an Jiaotong University, Xi'an 710049
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| Cite this article: |
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ZHOU Hang, XU Zhuo, XIA Song et al 2012 Chin. Phys. Lett. 29 034101 |
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Abstract Based on the concept of a grating-coupled waveguide (GCW), a new strategy for realizing EM cloaking is presented. Using metallic grating, incident waves are firstly coupled into the effective waveguide and then decoupled into free space behind, enabling EM waves to pass around the obstacle. Phase compensation in the waveguide keeps the wave-front shape behind the obstacle unchanged. Circular, rectangular and triangular cloaks are presented to verify the robustness of the GCW cloaking. Electric field animations and radar cross section (RCS) comparisons convincingly demonstrate the cloaking effect.
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| Keywords:
41.20.Jb
42.25.Bs
78.20.Ci
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Received: 06 December 2011
Published: 11 March 2012
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| PACS: |
41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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42.25.Bs
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(Wave propagation, transmission and absorption)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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