The AT-AM4-1840-12XC from AT Microwave is a Frequency Multiplier with Input Frequency 4.5 to 10 GHz (Input), 18 to 40 GHz(Output), Output Frequency 18 to 40 GHz, Input Power 0 to 8 dBm, Output Power 10 to 12 dBm, Harmonics -50 to -25 dBc. Tags: Module with Connectors, Active. More details for AT-AM4-1840-12XC can be seen below.