Ultrahigh Frequency Broadband Low Noise Amplifier Design and Simulation
Ding Jia-feng · Jisuanji fangzhen · 2012
For maintaining the Power Transformer work safely and stably,detecting the partial discharge in it has significant meaning.The partial discharge signals received by antenna sensor are weak and have wide frequency band,therefore,it need to be amplified before input instrument or acquisition system.In this paper,we designed a Ultra-High Frequency(UHF) broadband Low-Noise Amplifier base on the features of partial discharge signals,the amplifier's index included gain,VSWR,noise factor and bandwith,which were balanced by introducing frequency response negative feedback.Simulation of amplifier was carried out with ADS software,and the results show that it has wide bandwidth,good gains flatness,noise factor and VSWR.