Design of a 1GHz~4GHz Ultra-Wide Band Low Noise Amplifier

摘要

This paper presents the design of a 1GHz~4GHz ultra-wide band (UWB) low noise amplifier (LNA) using the Avago Technologies'ATF-54143.The matching network uses lossy matching made up of lumped elements and micro-strip.Under the software design environment,the simulation results show a high gain (S21>26dB), fine flatness(<1dB), good noise characteristics(NF<1.1) and fine input/output return loss (S11<-10dB,S22<-10dB) in the frequency range of the design.