The design and simulation of radio frequency narrow band low noise amplifier with input, output, intermediate matching

摘要

This paper presents the design and simulation of 2-stage low noise amplifier(LNA) for the application of L-band used for mobile satellite communications by using microstrip technology and focusing on development of low noise amplifier operating from 0.6GHz-1.2GHz by using Enhancement Mode Pseudomorphic HEMT ATF34143 from Avago Technologies. The design circuit uses lumped elements to implement with input, output, intermediate matching networks and purpose 2-stage is to achieve good gain. Input and output matching network is to produces 50Ω impedance for maximum power transfer. The target simulation are gain (S21) with 30 dB, noise figure (NF) with 1dB throughout the band from 0.6G–1.2GHz, Input Return loss −16dB and Output Return Loss −18dB. A 2-stage LNA has successfully designed with 35 dB forward gain, 0.56 dB noise figure, Input Return loss −16dB to −27dB and Output Return Loss −19dB to −23dB by using Advance Wireless Revolution (AWR) Microwave office tool.