The MI3731 from Advanced Microwave Inc is a RF Mixer with RF Frequency 6000 to 12000 MHz, Conversion Loss 7 to 9 dB, LO/RF Isolation 38 to 30 dB, LO/IF Isolation 35 to 30 dB, IM Supression LO/RF 16 to 22 dB. Tags: Module with Connectors, Image Reject Mixer. More details for MI3731 can be seen below.