Title :
Electric-field-coupled metamaterials for microwave beam formation
Author :
Justice, B.J. ; Nguyen, V.N. ; Yönak, S.H. ; Kim, J. ; Smith, D.R.
Author_Institution :
Duke Univ., Durham
Abstract :
Microwave propagation through an electric-field-coupled metamaterial lens with a refractive index gradient is experimentally investigated. A gradient in the refractive index of the metamaterial is introduced by continuous tuning of a single parameter in the metamaterial elements. Experimental field maps, acquired in a planar waveguide, demonstrate that the planar gradient index lens can be used to collimate radiation from a line source, thereby forming a beam.
Keywords :
gradient index optics; lenses; metamaterials; microwave propagation; planar waveguides; refractive index; continuous tuning; electric-field-coupled metamaterials; microwave beam formation; microwave propagation; planar gradient index lens; planar waveguide; refractive index gradient; Antennas and propagation; Electromagnetic propagation; Electromagnetic radiation; Impedance; Lenses; Metamaterials; Optical design; Optical resonators; Planar waveguides; Refractive index; Graded index optics; electric-field-coupled resonators; metamaterials; microwave propagation;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4396058
