Title :
Gradient index transmission cloak composed of arrays of dielectric elements
Author :
Duan, Ran ; Semouchkina, Elena ; Pandey, Ravi
Author_Institution :
Dept. of Phys., Michigan Technol. Univ., Houghton, MI, USA
Abstract :
A 2D microwave transmission cloak composed of periodically arranged dielectric cylinders is designed and investigated by using full-wave simulations. It is shown that manipulating the periodicity of the dielectric elements can be used to provide the refractive index distribution required for bending waves around the concealed object. A possibility for obtaining the desired curvilinear wave paths in the cloak is confirmed by the simulated field patterns. The proposed all-dielectric cloak design is expected to provide low loss and broadband operation, since its performance is not related to resonance phenomena.
Keywords :
dielectric materials; invisibility cloaks; refractive index; 2D microwave transmission cloak; all-dielectric cloak design; bending waves; broadband operation; concealed object; curvilinear wave paths; dielectric element arrays; dielectric element periodicity; full-wave simulations; gradient index transmission cloak; periodically-arranged dielectric cylinders; refractive index distribution; Broadband communication; Dielectrics; Microwave theory and techniques; Optical refraction; Optical resonators; Optical variables control; Refractive index;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6349311
