A LNA for Enhancing Gain and Reducing Noise Figure for Wireless Application

Bluetooth, Wi-Fi are famous data transfer devices for 5G and beyond networks for better connectivity LNA play a vital role as first block of the receiver chain. This paper proposed a CMOS low noise amplifier (CLNA) novel architecture for wideband matching in RF environments and IoT operated devices to achieve high gain (S₂₁) and low noise figure (NF), an improved cascode source degenerated topology with an extra transistor is utilized to provide biased voltage to conventional CS transistor at 2.4 GHz center frequency with (1–5 GHz) BW is adopted due to diverse field of operation. An input output matching circuit is designed to achieve better input and output reflection coefficient (S₁₁ and S₂₂). The Proposed circuit utilizes CMOS 0.18 μm node to achieve S21 as 22.56 dB, S11 of − 19.65 dB, S12 of − 49.23 dB, NF of 1.1 dB, IP1dB of − 18.12 dB, IIP3 of − 9.38dBm at the desired frequency is achieved at 1.8 V.