The MAX5J105115 from Narda-MITEQ is a Frequency Multiplier with Input Frequency 2.1 to 2.3 GHz, Output Frequency 10.5 to 11.5 GHz, Input Power 3 to 8 dBm, Output Power 6 dBm, Conversion Loss 3 dB. Tags: Module with Connectors, Active. More details for MAX5J105115 can be seen below.