Title :
Design of ultra-thin polarization-insensitive circular-shaped microwave metamaterial absorber
Author :
Ghosh, Saptarshi ; Bhattacharyya, Somak ; Srivastava, Kumar Vaibhav
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur, Kanpur, India
Abstract :
An ultra-thin polarization-insensitive circular-shaped metamaterial based absorber has been presented based on Electric field driven LC (ELC) resonance. The basic unit cell consists of a metallic ELC resonator imprinted on FR-4 dielectric substrate backed by copper ground, which gives rise to high (99.85%) absorption at 11.07 GHz. The proposed structure is symmetric by design and thus exhibits high absorption for any angle of polarization. It also shows high absorption (80%) for incident angle upto 50° for both TE and TM polarizations. The absorption due to LC resonance of the proposed structure has been analyzed by varying different geometric parameters.
Keywords :
electromagnetic wave absorption; electromagnetic wave polarisation; microwave metamaterials; microwave resonators; FR-4 dielectric substrate; TE polarizations; TM polarizations; basic unit cell; copper ground; electric field driven LC resonance; frequency 11.07 GHz; geometric parameters; incident angle; metallic ELC resonator; ultra-thin polarization-insensitive circular-shaped microwave metamaterial absorber design; Absorption; Copper; Dielectric substrates; Electric fields; Impedance; Magnetic materials; Metamaterials;
Conference_Titel :
Applied Electromagnetics Conference (AEMC), 2013 IEEE
Conference_Location :
Bhubaneswar
Print_ISBN :
978-1-4799-3266-5
DOI :
10.1109/AEMC.2013.7045063
