A fully integrated Power Amplifier (PA) is fabricated for the 60GHz Wireless Personal Area Network (WPAN). It is based on the 65nm CMOS technology from STMicro-electronics. The PA is matched without serial transmission lines (T-Lines) to reach good performances and low die area. S-parameters and load pull measurement results are demonstrated and compared with electromagnetic simulations for the power transistor. The PA is optimized to deliver the maximum saturated output power (Psat) under class A biasing. The PA offers a Psat of 8.2dBm, an Output Compression Point (OCP1) of 5dBm and a gain of 5.7dB. The die area is 0.29mm2 with pads.