TAILIEUCHUNG - Near field and far field calculation from metallic elliptical cylinder coated with left handed metamaterial

This paper present a twodimensional problem of electromagnetic scattering from line source located outside of a metallic elliptical cylinder coved by isorefractive (right-handed material) and anti-isorefractive dielectric (left-handed material) . Analytical solutions of electric and magnetic fields as functions of line source position and layer thickness are discussed in frequency domain. | Journal of Science & Technology 131 (2018) 082-086 Near Field and Far Field Calculation from Metallic Elliptical Cylinder Coated with Left-Handed Metamaterial Ho Manh Linh1*, Ta Son Xuat1, Kiem Nguyen Khac1, Dao Ngoc Chien2 1 Hanoi University of Science and Technology, No. 1, Dai Co Viet, Hai Ba Trung, Hanoi, Viet Nam 2 Ministry of Sience and Technology, No. 113, Tran Duy Hung, Cau Giay, Hanoi, Viet Nam Received: July 31, 2018; Accepted: November 26, 2018 Abstract Recently, there is an increasing demand for metamaterial research both in theory and practical designs. Metamaterial cloaks and partially filled waveguide have been considered for their potential radiation enhancement and electromagnetic field confinement of sources. For some particular cases, the analysis can be carried out by separation of variables with the use of special functions. This paper present a twodimensional problem of electromagnetic scattering from line source located outside of a metallic elliptical cylinder coved by isorefractive (right-handed material) and anti-isorefractive dielectric (left-handed material) . Analytical solutions of electric and magnetic fields as functions of line source position and layer thickness are discussed in frequency domain. Keywords: Elliptical cylinder, metamaterial, separation of variables 1. Introduction domain with a time-dependence factor exp(-iωt) omitted throughout. In recent years, research of left-handed material has been remarkably attention thanks to the fact that dielectric properties of those medias having both negative permittivity and negative permeability. Such characteristics can be manipulated to modify the field distribution inside dielectric medias as well as field scattered from those bodies of evolution [1], [2]. In [3] geometry with sources located inside the materials and there is no presence of metallic core. The exact radiation from electric and magnetic line sources located outside confocal elliptical cylinders with metallic .

• Điện - Điện tử
• Elliptical cylinder
• Separation of variables
• Frequency domain
• Anti isorefractive dielectric
• Left handed material
• Metallic elliptical cylinder