Design of Low Noise Amplifier at 3.4GHz for Ranging Transponder (IRNSS)

This paper describes the design and simulation of a single stage Low Noise Amplifier (LNA) at 3.4 GHz frequency. The single stage amplifier is designed by using MGF4941AL super –low noise InGaAs HEMT. This low noise amplifier (LNA) is design for application of Receiver Ground Station in Ranging Transponder of Indian regional navigation satellite system (IRNSS). The key points are analysis device's stability with Stability factor and the input and output impedance matching with Smith Chart and Tuning. Finally, the performance parameters of LNA were obtained with the simulation of S parameters. The target simulation are gain (S21) with >15dB, noise figure with <2dB, Input and output return loss <-10dB. A single stage LNA has successfully designed with 18.025dB forward gain (S21), 1.750dB noise figure, -11.040dB input return loss (S11), -10.201dB output return loss (S22) by ADS software.