The HMC815B from Analog Devices is a RF Mixer with RF Frequency 21 to 27 GHz, LO Frequency 10.5 to 14.5 GHz, IF Frequency DC to 3.75 GHz, Conversion Gain 7 to 12 dB, LO Drive - Power 0 to 6 dBm. Tags: Ceramic, I/Q Mixer, Up-Conversion Mixer. More details for HMC815B can be seen below.