5.3. LNA Topologies

Our preliminary studies thus far suggest that the noise figure, input matching, and gain constitute the principal targets in LNA design. In this section, we present a number of LNA topologies and analyze their behavior with respect to these targets. Table 5.1 provides an overview of these topologies.

Table 5.1. Overview of LNA topologies.

Common–Source Stage with	Common–Gate Stage with	Broadband Topologies
Inductive Load Resistive Feedback Cascode, Inductive Load, Inductive Degeneration	Inductive Load Feedback Feedforward Cascode and Inductive Load	Noise–Cancelling LNAs Reactance–Cancelling LNAs