In Band Full Duplex PLC: The role of the hybrid coupler

In Band Full Duplexing (IBFD) has recently become attractive for power line communications (PLC). In this paper we analyze the role of the first stage of a PLC-IBFD modem: the hybrid coupler. An analytical analysis of its influence on the signal transfer function is performed and some simulations using a measurement database are also included. Possible hardware implementation of a PLC hybrid coupler are finally discussed.