The Gilbert cell mixer is one of the most popular circuit topologies for frequency down-conversion in modern wireless networks. The topology is not well suited to the performance demands of some wireless networks in the mmWave spectrum, however, as it exhibits an inherent trade-off between linearity and DC power consumption. This work proposes an alternative mixer topology for mmWave down-conversion that overcomes this trade-off, enabling highly linear operation in nearly every 5G FR2 band. Over its RF bandwidth, the mixer proposed in this work exhibits a conversion gain above 0 dB, an IP1dB above 0 dBm, and an OP1dB above 0 dBm while limiting DC power consumption to 42 mW.