The MI3631 from Advanced Microwave Inc is a RF Mixer with RF Frequency 2000 to 6000 MHz, Conversion Loss 7 to 9 dB, LO/RF Isolation 30 to 25 dB, LO/IF Isolation 25 to 20 dB, IM Supression LO/RF 11 to 18 dB. Tags: Module with Connectors, Image Reject Mixer. More details for MI3631 can be seen below.