Multi-standard Highly Linear CMOS LNA

Abstract

A highly linear multi-standard low noise amplifier (LNA), is a key block in the design of broadband receivers for wideband wireless communication standards. LNA that achieves high third order intercept point (IIP3) using Derivative Superposition (DS) technique is proposed. The proposed LNA is capable of operating on a frequency range from 0.8GHz to 2.5GHz i.e. Covering most of the high speed data applications as GSM, GPS, UMTS, Bluetooth and Wi-Fi. Linearization technique is applied to a multi-standard Cascode Common Source LNA (CS-LNA). The design is implemented using TSMC 0.18μm CMOS process with 1.3V power supply. Simulation results indicates, the Cascode linearized LNA achieves +21 dBm IIP3, 12.8 dB (min.) to 15.1 dB (max.) gain, 2.75 dB (max.) to 1.63 dB (min.) NF over operating range and stability factor of 2.4 (min.).