The FMSN3903 from Fairview Microwave is a Frequency Synthesizer with Frequency 10 to 20 GHz, Step Size 1 to 200 MHz, Reference Frequency 5 to 100 MHz, Output Power 18 dBm, Input Power 15 dBm. Tags: Module with Connector, PLL Frequency Synthesizer. More details for FMSN3903 can be seen below.