Reconfigurable graphene reflectarray with switchable focus

  title={Reconfigurable graphene reflectarray with switchable focus},
  author={Ben Ming You and Liang Zhou and Lin-Sheng Wu and Junfa Mao},
  journal={2016 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)},
A reconfigurable graphene reflectarray (RGRA) is proposed with the electrically switchable focus for incident (quasi-)spherical waves. The geometry- and chemical potential-dependent reflection phase is explored for the reflective graphene patch cells, which is further assigned to specific parts of the RGRA. The full-wave simulated results demonstrate that the proposed structure can provide a dynamically controllable focus at 1.5 THz. The peak realized gain and the radiation efficiency are… CONTINUE READING