一种改进型WCDMA双向塔放LNA设计

LNA(Low noise amplifier) is a basic but vital component in designing TMB(Tower-Mounted Booster), and hence,based on receiver system and constant-current source theory,a modified LNA,designed for WCDMA TMB is proposed.By summarizing home and abroad RF front-end design experience and according with engineering requirements, as well as combining properties of real components,a proper LNA, whose working frequency is between 1920MHz and 1980MHz, is designed in Agilent ADS2009 simulation environment with a 0.702dB noise figure, a 15.523dB gain and a 12.701 IIP3. To our knowledge this is a rather stable LNA designed for engineering use compared with common designs.