The AT-AM4-6090-18T from AT Microwave is a Frequency Multiplier with Input Frequency 15 to 22.5 GHz (Input), 60 to 90 GHz(Output), Output Frequency 60 to 90 GHz, Input Power 13 to 15 dBm, Output Power 18 dBm, Harmonics -40 to -25 dBc. Tags: Waveguide, Active, Waveguide Multiplier. More details for AT-AM4-6090-18T can be seen below.