The HMC292 chip is a miniature passive double-balanced mixer which can be used as an upconverter or downconverter from 18 - 32 GHz in a small chip area of 0.93 mm2. Excellent isolations are provided by on-chip baluns, which require no external components and no DC bias. The mixer chip is designed to be used in Local Multi- Point Distribution Systems (LMDS), microwave point to point radios, and SATCOM applications. All data is measured with the chip in a 50 ohm test fixure connected via 0.025 mm (1 mil) diameter wire bonds of minimal length <0.31 mm (<12 mils).