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A 23-30 GHz LNA with Noise-Cancelling in 28nm CMOS

This paper presents a 23-30 GHz low-noise amplifier (LNA) with noise-cancelling technique in 28nm CMOS. An improved common gate and common source (CG-CS) noise-cancelling topology is proposed to optimize the noise figure (NF). In addition, the bandwidth is extended and gain ripple is reduced by using second-order L-C band-pass networks and inductively coupling techniques. The post simulation results show that over the entire band of 23-30 GHz, we obtain 3.8-4.8dB NF and 16.9-17.7dB power gain with 0.8dB in-band ripple, and input matching better than −12dB. It consumes 22.2mW from 0.9V power supply and occupies 0.315mm2 without pad.