The CFM0409X220 from Cernex Inc is a Frequency Multiplier with Input Frequency 4 to 9 GHz, Output Frequency 8 to 18 GHz, Output Power 20 dBm, VSWR 2.00:1, Frequnecy 4 to 9 GHz. Tags: Module with Connectors, Active, Passive. More details for CFM0409X220 can be seen below.