A 22-40.5 GHz UWB LNA Design in 0.15um GaAs

摘要

This paper presents an ultra-wide-band low-noise amplifier (UBW LNA) design for 5G communication and other millimeter-wave applications. In the proposed LNA design, the common source stage with inductive degeneration is used for a better input matching, and the Pi network is used for the ultra-wide-band matching. The proposed UBW LNA is demonstrated using 0.15 um GaAs process. According to the post-layout simulations, the LNA operates from 22 GHz to 40.5 GHz, and a maximum gain of 20 dB and minimum noise figure of 3.4 dB are achieved. The LNA achieves a 59% -3 dB and a 48% -1 dB small-signal S₂₁ bandwidth.