A broadband simplified free space cloak realized
by nonmagnetic dielectric cylinders
A broadband simplified free space cloak realized
by nonmagnetic dielectric cylinders
Di BAO(鲍迪)1,Efthymios KALLOS1,Wen-xuan TANG(汤文轩)1,Christos ARGYROPOULOS1,Yang
HAO(郝阳)1,Tie-jun CUI(崔铁军)2,
1.Department of Electronic
Engineering, Queen Mary, University of London, Mile End Road, London,
E1 4NS, UK; 2.State Key Laboratory
of Millimeter Waves, Department of Radio Engineering, Southeast University,
Nanjing 210096, China;
Abstract：In this paper, the properties of cylindrical high permittivity dielectric particles are studied. A design for broadband reduction of the scattering signature of metallic objects is proposed by implementing simplified ground-plane cloaking schemes. The devices are functional in the presence of a ground plane as well as in free space ranging from 4 GHz to 10 GHz. The required dielectric map for the cloak is achieved by means of manipulating the dimensions of the periodically distributed dielectric cylinders embedded in a host medium with a permittivity close to one. The scattering reduction effects are verified through simulation results. The proposed all dielectric cloaks are advantageous over other schemes due to their non-dispersive nature, the broad bandwidth, the low loss, and the ease of fabrication.
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