A 2.5 dB noise figure 28 GHz current-reused noise-cancelling LNA with g_m-boosting in 65 nm CMOS for millimeter-wave MIMO applications

Abstract

A 28 GHz noise-cancelling low noise amplifier (LNA) in standard 65 nm CMOS technology is introduced for millimeter-wave application in this letter. The proposed LNA implements transformer-based noise-cancelling technique to cancel the in-phase noise from main and auxiliary amplifier while strengthening the combined signal. A gain-boosting transformer is employed to improve gain with minimized power consumption. Current-reuse technique is further introduced to reduce power consumption overhead. This work achieves a gain of 27 dB and a minimum noise figure (NF) of 2.5 dB with only 4.4-mW LNA stage power consumption.