Publications [#269775] of David R. Smith

Papers Published
  1. Justice, BJ; Nguyen, VN; Yönak, SH; Kim, J; Smith, DR, Electric-field-coupled metamaterials for microwave beam formation, Ieee Antennas and Propagation Society, Ap S International Symposium (Digest) (2007), pp. 2566-2569 [doi] .

    Microwave propagation through an eleetrie-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. © 2007 IEEE.