Low noise, low power dissipation mHEMT-based amplifiers for phased array application

In this paper, we present two mHEMT-based low noise, low power dissipation amplifiers (LNAs) for X-band phased array applications. These LNAs provide ultra low noise figures while yielding over 20 dB of gain and dissipating less than 50 mW of DC power. The designs include both a standard, single ended topology as well as a balanced topology with novel current sharing that provides excellent return losses at the expense of only 0.3 dB of noise figure as compared to the single ended design.