The HMC7912 from Analog Devices is a RF Mixer with RF Frequency 21 to 24 GHz, LO Frequency 8.75 to 12 GHz, IF Frequency DC to 3.5 GHz, Conversion Gain 10 to 15 dB, Noise Figure 14 dB. Tags: Surface Mount, I/Q Mixer, Up-Conversion Mixer. More details for HMC7912 can be seen below.