Title :
Designs of metamaterials that enable electromagnetic cloaks for dual-frequency application
Author :
Zhang, Hualiang ; Xin, Hao ; Ziolkowski, R.W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA
Abstract :
We have developed a dual-frequency electromagnetic cloak based on LC circuits. The limitations imposed by the extremely small values of the permittivity / permeability required for cloaking applications are relaxed by the proposed LC-circuit with multiple resonances. Full-wave simulations are then carried out to verify the design concept, where a cylindrical cloak working at 3 and 5 GHz is designed and simulated. The simulation results show the desired dual-frequency operations of the cloak. Based on the same concept, it is possible to design cloaking structures having multiple-frequency operation.
Keywords :
electromagnetic shielding; metamaterials; LC circuits; dual-frequency application; electromagnetic cloaks; frequency 3 GHz; frequency 5 GHz; full-wave simulations; metamaterials; Application software; Conductors; Electromagnetic fields; Electromagnetic propagation; Electromagnetic scattering; Frequency; Metamaterials; Permeability; Permittivity; Robustness;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171858
