2-GHz 1.35-dB NF pHEMT single-voltage-supply process-independent low-noise amplifier

A 2-GHz single-voltage-supply 0.15-μm depletion-mode (D-mode) pseudomorphic high electron-mobility transistor (pHEMT) low-noise amplifier (LNA) is demonstrated with a proposed process-independent self-biasing scheme. The current-reused technique is also employed to achieve a common-source common-drain two-stage LNA under a dc current of 10.85 mA at a 3-V supply. As a result, the proposed LNA achieves 20-dB power gain and 1.35-dB noise figure (NF) at 2 GHz while the minimum NF=1.3 dB occurs at 2.4 GHz.