The HMC521 from Analog Devices is a RF Mixer with RF Frequency 8.5 to 13.5 GHz, LO Frequency 8.5 to 13.5 GHz, IF Frequency DC to 3.5 GHz, Image Rejection 40 dB, Conversion Loss 7.5 dB. Tags: Surface Mount, I/Q Mixer, Image Reject Mixer. More details for HMC521 can be seen below.