A Wedge-Shaped Invisibility Cloak

Majlesi Journal of Telecommunication Devices

مقاله 2، دوره 6، شماره 4، اسفند 2017   

نوع مقاله: Articles

نویسندگان

Maryam Samadpour Hendevari^* ؛ Mohammad Bemani؛ Saeid Nikmehr

University of Tabriz

چکیده

In this paper, a wedge-shaped invisibility cloak whose diameter gradually increases along the arms of the wedge is introduced. The constitutive parameters of the cloak are obtained using a proper transformation. By considering two special cases for incident fields, (TEz and TMz), and paying attention that the wedge structure is invariant in axial and radial directions, the reduced set of cloaking parameters are obtained spatially invariant and larger than one, keeping the PML (perfectly matched layer) condition for perfect cloaking performance. Spatially invariant and isotropic constitutive parameters lead to the physically realizable cloak in a wide band of frequency for this specific type of incident fields.

کلیدواژه‌ها

Microwave Cloak؛ en؛ Transformation Optics

مراجع

[1] D. Kwon, and D. H. Werner, “Transformation electromagnetics: an overview of the theory and applications, ” IEEE Antennas and Propagation Magazine, Vol. 52, No. 1, pp. 24-46, Feb. 2010.

[2] D. Schurig, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies, ” Science, Vol. 314, pp. 977-980, 10 Nov. 2006.

[3] S. A. Cummer, B. Popa, D. Schurig, D. R. Smith, and J. Pendry, “Fullwave simulations of electromagnetic structures, ” Physical Review, E 74, 036621, pp. 1 -5, 2006.

[4] J. B. Pendry, D. Schurig, and D. R. Smith, “Controlling electromagnetic fields,” Sciencexpress, 10.1126, science. 1125907, pp. 1 -4, 25 May 2006.

[5] X. Wang, “Experimental and computational studies of electromagnetic cloaking at microwaves, ” PhD thesis, Michigan Technological University, Michigan, 2014.

[6] Q. Cheng, W.X. Jiang, and T. J. Cui, “Investigations of the electromagnetic properties of three-dimensional arbitrarily shaped cloaks, ” Progress In Electromagnetics Research, PIER 94, pp. 105-117, 2009.

[7] Y. Luo, J. Zhang, B. Wu, and H. Chen, “Interaction of an electromagnetic wave with a cone-shaped invisibility cloak and polarization rotator, ” Physical Review B 78, 125108, pp.1 -9, 2008.

[8] S. Taravati, and A. Abdolali, “A new three dimensional conical groundplane cloak with homogeneous materials, ” Progress In Electromagnetics Research M, Vol. 19, pp. 91 -104, 2011.

[9] A. Nikolet, F. Zolla, and S. Guenneau, “Finite-element analysis of cylindrical invisibility cloaks of elliptical cross section, ” IEEE Transactions on Magnetics, Vol. 44, No. 6, pp. 1150-1153, June 2008.

[10] B. Zhang, Y. Luo, X. Liu, and G. Barbastathis, “macroscopic invisibility cloak for visible light", Phys. Rev. Lett. 106, 033901, pp. 1 -12, Jan., 2011.

[11] A. Forouzmand, and A. B. Yakovlev, “Electromagnetic cloaking of a finite conducting wedge with a nanostructured graphene metasurface, ” IEEE Trans. On Antennas and Propag. , Vol. 63, No. 5, pp. 2191 -2202, May 2015.

[12] C. A. Balanis, “Antenna Theory, Analysis and Design, ”, third edition, John Wiley and Sons, 2005.