Experimental characterization of a broadband transmission-line cloak in   free space
  The cloaking efficiency of a finite-size cylindrical transmission-line cloak operating in the X-band is verified with bistatic free space measurements. The cloak is designed and optimized with numerical full-wave simulations. The reduction of the total scattering width of a metal object, enabled by the cloak, is clearly observed from the bistatic free space measurements. The numerical and experimental results are compared resulting in good agreement with each other. 
Pekka Alitalo, Ali E. Culhaoglu, Andrey V. Osipov, Stefan Thurner,   Erich Kemptner, Sergei A. Tretyakov
physics.class-ph physics.optics