The AVT-51663 from Broadcom is a RF Amplifier with Frequency 6 GHz, Gain 18 to 21.7 dB, Noise Figure 3.2 dB, Output Power 12.9 to 13.3 dBm, Output Power 0.019 to 0.021 W. Tags: Surface Mount, Gain Block, Power Amplifier. More details for AVT-51663 can be seen below.