2010•Journal of MicrowavesRequires access

Simulation and Design of 900MHz Low Noise Power Amplifier

XU Shu-wu

Abstract

The low-noise amplifier is characterized by small noise figure and low output power.The characteristic of power amplifier is large output power and large noise figure.In order to achieve amplifier with small noise figure and large output power,the paper,combined with the design methods of low-noise amplifier and power amplifier,designs a low-noise power amplifier for harmonic radar transmitter.The amplifier consists of two-stage amplifier.The first stage amplifier achieves low noise and the second stage amplifier achieves power gain.The amplifier reaches more satisfactory results by optimizing the simulation design.The amplifier has good linearity and second harmonic suppression.

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Key concepts: Direct-coupled amplifier, Linear amplifier, RF power amplifier, Low-noise amplifier, Power-added efficiency, Operational transconductance amplifier, Effective input noise temperature, Cascade amplifier