The MTS6018 from Teledyne Microwave Solutions is a Triple-Balanced Mixer with LO/RF frequency from 0.01 to 6 GHz and an IF frequency from 0.001 to 3 GHz. It has a conversion loss of 7 dB and provides an LO to RF isolation of 30 dB. This mixer is available in a surface-mount package that measures 12.95 x 9.78 x 4.3 mm.