title: An Object-Independent ENZ Metamaterial-Based Wideband Electromagnetic Cloak.
abstract: A new, metamaterial-based electromagnetic cloaking operation is proposed in this study. The metamaterial exhibits a sharp transmittance in the C-band of the microwave spectrum with negative effective property of permittivity at that frequency. Two metal arms were placed on an FR-4 substrate to construct a double-split-square shape structure. The size of the resonator was maintained to achieve the effective medium property of the metamaterial. Full wave numerical simulation was performed to extract the reflection and transmission coefficients for the unit cell. Later on, a single layer square-shaped cloak was designed using the proposed metamaterial unit cell. The cloak hides a metal cylinder electromagnetically, where the material exhibits epsilon-near-zero (ENZ) property. Cloaking operation was demonstrated adopting the scattering-reduction technique. The measured result was provided to validate the characteristics of the metamaterial and the cloak. Some object size- and shape-based analyses were performed with the cloak, and a common cloaking region was revealed over more than 900 MHz in the C-band for the different objects.
authors.affiliation: Space Science Centre, Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia.
authors.forename: Sikder Sunbeam
authors.initials: SS
authors.lastname: Islam
authors.affiliation: Space Science Centre, Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia.
authors.forename: Mohammad Rashed Iqbal
authors.initials: MR
authors.lastname: Faruque
authors.affiliation: Dept. of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia.
authors.forename: Mohammad Tariqul
authors.initials: MT
authors.lastname: Islam