High Robustness S-Band GaN Based LNA

A robust full-MMIC S-band Low Noise Amplifier including power limiter based on envelope detector and Cold FET power reflector is presented. The robust LNA is based on $0.25 \mu m$ UMS GaN technology and exhibits high Input Power-handling up to 40W over 2-4GHz bandwidth associated to measured Recovery Time lower than $0.5 \mu s$. Furthermore, the LNA noise Figure performance is lower than 2dB with more than 22dB of small signal gain. These results are promising for the next frontend radar architectures.