The AT-AM4-2040-20 from AT Microwave is a Frequency Multiplier with Output Frequency 20 to 40 GHz, Input Power 10 to 15 dBm, Output Power 20 dBm, Sub-Harmonic Suppression -20 dBc, Frequnecy 5 to 10 GHz. Tags: Module with Connectors, Active. More details for AT-AM4-2040-20 can be seen below.