LNA Design for 3 cm Band Applications

Abstract

This work deals with the designing of different low noise amplifiers for 3 cm band application which operates in 10.00 to 10.5 GHz frequency band with 10.40 GHz as the center frequency. The amplifier is designed using GaAs HEMT A–TF 36077 with different passive components in the feedback network which is one of the technique to improve stability of potentially unstable device and make it unconditionally stable. It is observed that the noise immunity is more in LNA design in which feedback network with a resistor and inductor in series is used. This design resulted in noise figure of 1.43 dB and power gain of 21.654 dB. The comparative analysis of the LNA design is discussed in this paper.