The EMM5838V1B from Sumitomo Electric Device Innovations is a RF Amplifier with Frequency 29.5 to 30 GHz, Gain 25 dB, Power Gain 21 to 24 dB, Output Power 26 dBm, Output Power 0.4 W. Tags: Surface Mount, Ceramic, Hermetic, Power Amplifier. More details for EMM5838V1B can be seen below.