Low Noise Amplifier Design with Metamorphic HEMT Technology for Radioastronomy Application

Abstract

In this paper, a low noise amplifier based on a feedback topology designed thanks to an original method is presented. Because of strong constraints in terms of noise performance a meticulous method has been developed to choose the optimum transistor. This circuit achieves a 0.3-1.7 GHz bandwidth. The circuit gain is greater than 15 dB and the noise figure is lower than 1.5dB all along the bandwidth. These performances have been reached using OMMIC DOO7IH Metamorphic HEMT (MHEMT) technology.