Monolithic GaAs Wideband Low Noise RLC Feedback Amplifiers

One, two, and three stage RLC feedback GaAs monolithic amplifiers were designed, fabricated and tested. The fabrication process uses two dielectrics, polyimide and silicon nitride, to achieve low capacitance metal cross overs and high capacitance per unit area capacitors. The amplifiers had gains 8 dB/stage with a 3 dB cut off frequency of 3.2 GHz and a typical noise figure of 4 dB.