4 The unique properties of graphene plasmonic antennas open new perspectives on wireless communications in the terahertz (THz) band, with great promise in a world eager for high bandwidths, small form factors, and operational flexibility. This chapter first revisits the background and current design trends in the area. Then, it describes a theoretical framework that aims to enable the systematic evaluation of the unique features of graphene antennas in a THz link, including the peculiarities of the THz wireless channel. The methodology is exemplified in a simple use case of indoor communications and its relevance discussed in the context of advanced protocols at the physical and link layers of design.