Graphene-based Beam Steering Antenna

In this paper, two kinds of graphene-based beam steering millimeter wave antennas presented by our group are summarized. Firstly, a pattern reconfigurable antenna is presented, which is composed of two improved Vivaldi antennas distributed inversely and a power dividing feed line loaded with graphene nanoplates. The proposed antenna can manipulate its radiation pattern from two opposite beams to a single beam by changing the resistance of two graphene pads. In addition, a kind of multi-layer graphene film (MGF) with the characteristic of both high flexibility and high conductivity is designed, which is used to design a multi-beam array antenna. The fabricated antenna array can offer a wider impedance bandwidth and a large beam scanning range, indicating the potential of MGF as antenna radiators in millimeter wave region.