The CFM0305X220 from Cernex Inc is a Frequency Multiplier with Input Frequency 3.8 to 5.4 GHz, Output Frequency 7.6 to 10.8 GHz, Output Power 20 dBm, Harmonics 10 dBc, VSWR 2.00:1. Tags: Module with Connectors, Active, Passive. More details for CFM0305X220 can be seen below.