RFLN03C is a three stage low noise amplifier with Lange Coupler at input & output side for perfect input and output matching to 50 ohms. It provides high gain over wide bandwidth, low Noise Figure, high isolation, stability. The LNA is designed to operate from 20 – 40 GHz using 0.1um GaAs pHEMT process. The LNA offers less than 4 dB noise figure, 18.8 dB of small signal gain, OP1dB of 14.5 dBm with low noise figure along with the flexibility of setting current and gain makes this LNA an ideal front end amplifier in 5G, Terrestrial communication system and Radar Application. Results are shown in datasheet with all parasitics & coupling effects at desired frequency.