Advanced High Power Amplifier Chain for X-Band T/R-Modules based on GaN MMICs

Power amplifiers for a next generation of T/R-modules in future active array antennas are realized as monolithically integrated circuits on the bases of novel AlGaN/GaN HEMT structures. Both, driver and high power amplifiers are designed for X-band frequencies. The monolithically integrated circuits (MMICs) are designed, simulated and fabricated using a novel via-hole microstrip technology. Output power levels of 1.6 W (32 dBm) for the driver amplifier (DA) and 20 W (43 dBm) for the high power amplifier (HPA) are measured. An amplifier chain circuitry, with mounted GaN DA and HPA MMICs, is designed based on a multi-layer LTCC technology.