The HMC448LC3B from Analog Devices is a Frequency Multiplier with Input Frequency 10 to 12.5 GHz, Output Frequency 20 to 25 GHz, Input Power -4 to 6 dBm, Output Power 11 dBm, Phase Noise -135 dBc/Hz. Tags: Surface Mount, Active. More details for HMC448LC3B can be seen below.