The CHA3397-QDG from United Monolithic Semiconductors is a RF Amplifier with Frequency 36 to 40.5 GHz, Gain 21 dB, Noise Figure 7 dB, Output Power 18 to 20 dBm, Output Power 0.06 to 0.1 W. Tags: Surface Mount, Power Amplifier. More details for CHA3397-QDG can be seen below.