The HMC444LP4 / 444LP4E from Analog Devices is a Frequency Multiplier with Input Frequency 1.2375 to 1.4 GHz, Output Frequency 9.9 to 11.2 GHz, Input Power -15 dBm, Output Power 6 dBm, Harmonics 25 dBc. Tags: Surface Mount, Active. More details for HMC444LP4 / 444LP4E can be seen below.