Design of a Very Low Noise Figure Wideband LNA With Differential Output for RF Reciever Applications

This paper presents a wideband Low Noise Amplifier (LNA) for On-chip SAW-less NB-IoT RF receivers, covering 0.4 GHz to 4.4 GHz. It achieves low Noise Figure (NF) by integrating gate and source inductors with a resistive feedback network. The LNA demonstrates NF of 1.9 to 3.2 dB, enhancing system performance. Input matching is optimized for S11 below -10 dB. Operating under challenging conditions (FF, Vdd+10%, 125°C), it consumes 7.8 mW power. Implemented in TSMC’s 65 nm low power CMOS technology, this design enhances wideband functionality and NF, crucial for NB-IoT applications.