The performance of a full-duplex (FD) relaying system is investigated in this paper. The relay is equipped with two antennas (both are trans-receiver). The energy constrained relay is powered by RF energy harvesting. A time-switching architecture is adopted to make communication between a source and a destination. Information received at the destination from both the trans-receiver is combined using a soft combining technique, i.e., Maximal Ratio Combining (MRC). The performance of two protocols, decode-and- forward (DF) relaying and amplify-and-forward (AF), are also studied and compared. It is found that use of double antenna instead of single antenna based transmission at the relay improves the performance significantly. The impact of MRC on the throughput performance is noticeable. © 2018 IEEE.