Abstract
In this paper, a flexible graphene film with high conductivity of 1.1×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sup> S/m is proposed. The graphene film has the density of 1.45 g/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> , which is only one sixth of copper. A microstrip antenna based on the graphene film is designed, fabricated and measured. The graphene film based antenna has excellent |S <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sub> | of -30.33 dB at 2.47 GHz and high gain of 2.11 dBi. In addition, the measured radiation patterns of graphene antenna are similar to the copper antenna. The simulated and measured performances of graphene antenna indicate that the flexible and lightweight graphene film is a good substitute for metal.
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