The HMC554LC3B from Analog Devices is a RF Mixer with RF Frequency 11to20 GHz, LO Frequency 11 to 20 GHz, IF Frequency DC to 6 GHz, Conversion Loss 7 dB, LO Drive - Power 13 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for HMC554LC3B can be seen below.