The AT-AM4-6090-12 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 8 to 15 dBm, Output Power 10 to 12 dBm, Harmonics -15 dBc. Tags: Waveguide, Active, Waveguide Multiplier. More details for AT-AM4-6090-12 can be seen below.