Robust GaN Limiting LNA for C-Ku Band T/R Modules

Abstract

In this contribution a robust limiting-LNA for next generation Electronic Warfare T/R modules is presented. The proposed circuit relies on a balanced design technique and exploits ad hoc biasing circuit scheme to control output power compression characteristic. The proposed MMIC features a 3.5 x 2 mm2 outline and operates in the 5 ÷18 GHz band with an average noise figure of 3.5 dB and an associated gain of 13 dB; output power is clamped around 15 dBm up to 4W of input excitation, while guaranteeing a minimum OP1 dB of 10 dBm.