C-Band General Class-J Power Amplifier Using Gan Hemt

In this paper, a C-band wideband power amplifier (PA) using a GaN HEMT is proposed. The general Class-J mode, which offer a bigger design space for the fundamental and harmonic terminations, is introduced to implement wideband PA. Then, to verify the mechanism mentioned above, a wideband PA operating from 3.5 to 6.0 GHz is proposed and fabricated. Meanwhile, the load/source harmonic and baseband impedances are also considered for the linearity. The amplifier exhibits 8-11 dB gain and 51%-64% drain efficiency (DE) covering from 3.5 to 5.5 GHz.