The HMC904 from Analog Devices is a RF Mixer with RF Frequency 17 to 24 GHz, LO Frequency 7.5 to 12.3 GHz, IF Frequency 0 to 3.5 GHz, Image Rejection 15 to 35 dBc, Conversion Gain 8.5 to 12 dB. Tags: Surface Mount, I/Q Mixer, Down-Conversion Mixer. More details for HMC904 can be seen below.