Electron Cyclotron (EC) beam injection systems are considered for ITER-FEAT and JET in scenarios for the control of both plasma current profile and MHD instabilities [1]. Quasi-optical designs of the EC launchers for ITER-FEAT and JET-EP devices are prepared to optimize the injection parameters and to obtain a well localized Electron Cyclotron Current Drive (ECCD) around the rational surfaces q=3/2 and q=2 in order to suppress the low-order activities, as Neoclassical Tearing Modes (NTMs), with m=3, n=2 and m=2, n=1. The basic feature of EC waves to propagate into the plasma without attenuation and interaction with the edge allow to locate the launching final mirrors far from the vessel especially in the case of ITER.