A Noise Reduction and Linearity Improvement Technique for a Differential Cascode

Abstract

A typical common source cascode low-noise amplifier (CS-LNA) can be treated as a CS-CG two stage amplifier. In the published literature, an inductor is added at the drain of the main transistor to reduce the noise contribution of the cascode transis- tors. In this work, an inductor connected at the gate of the cas- code transistor and capacitive cross-coupling are strategically com- bined to reduce the noise and the nonlinearity influences of the cas- code transistors in a differential cascode CS-L