Gate recess study for high thermal stability pHEMT devices M. Mohamad Isa, N. Ahmad, Siti S. Mat Isa, Muhammad M. Ramli, N. Khalid, N.I. M. Nor, S.R. Kasjoo and M. Missous EPJ Web Conf., 162 (2017) 01047 Published online: 22 November 2017 DOI: 10.1051/epjconf/201716201047