Electromagnetic Scattering by a Conducting Cylinder Coated with Metamaterials

Abstract

Abstract-The electromagnetic scattering from a conducting cylinder coated with metamaterials, which have both negative permittivity and permeability, is derived rigorously by using the classic separation of variables technique. It is found that a conducting cylinder coated with metamaterials has anomalous scattering cross section compared to that coated with conventional dielectric materials. Numerical results are presented and discussed for the scattering cross section of a conducting cylinder coated with metamaterials.

Scattering from bodies coated with metamaterial using FDFD method

“…2 for TE incidence, a cylinder coated with a conventional material has smaller forward scattering compared to a cylinder coated with a metamaterial. The results are in very good agreement with those obtained by Li and Shen [6]. Figure 4 shows the RCS of two layer dielectric (ε 2 = 9.8ε o , and µ 2 = µ o ) and metamaterial (ε 2 = −9.8ε o , and µ 2 = −µ o ) circular cylinder (a 1 = 0.05 m, a 2 = 0.10 m) illuminated by a TM plane wave at f = 300 MHz and θ = π compared with Matteo [15] and good agreement between those two results.…”

“…The electromagnetic scattering from single and array of cylinders coated by metamaterials, which have both negative permittivity and permeability, for both normal and oblique incidence had been studied in [5][6][7][8]. Only two-dimensional cases are considered.…”

Electromagnetic Scattering by Parallel Metamaterial Cylinders

“…In reference [6] multiple conducting and dielectric circular cylinders are studied for modeling of other complex cylindrical shapes. In [7] scattering problem by a single circular cylinder coated by metamaterials is studied, and in [8] scattering by ellipticallyshaped metamaterials is investigated. In [9] an iterative procedure for electromagnetic scattering from parallel chiral cylinders is developed.…”

Spherical Slotted Antenna Coated With Double Layer of Materials Having Combinations of Singly and Doubly Negative Parameters and Consequences of Mode Resonances

“…Specific applications involving the coating of radiators and scatterers with metamaterial layers are in the enhancement of the radiation efficiency [6] and directivity [7,8], as well as the reduction of sidelobes [8]. There had also been studies of anomalous scattering by conducting cylinders coated with metamaterials [9]. Works associated with the studies of unusual resonances caused by metamaterials [10] for achieving improved efficiencies [11], strong field localization [12], and even microwave filtering in waveguides [13] were also conducted.…”