Design of X/Ku Dual-Wideband GaN Power Amplifier MMIC Based on Coupled Multiresonator Matching Networks

This brief presents an X/Ku concurrent dual-wideband power amplifier (PA) monolithic microwave integrated circuit (MMIC) fabricated with $0.25{\mu }\text{m}$ GaN-on-SiC technology. The input matching network (IMN) and output matching network (OMN) of the proposed PA are designed based on electric and magnetic coupled symmetric multi-resonator matching networks (MRMNs) respectively to obtain four reflection zeros. Through symmetrical network analysis method, the four reflection zeros of the matching network are equally divided into two sub frequency bands and an optimal dual-wideband matching performance is realized. The proposed PA obtains average saturated output power of 36.9dBm and 35.9dBm in 9GHz–10GHz and 13.5GHz–16GHz. The measured average power-added efficiency (PAE) are 34.8% and 32.6% in 9GHz–10GHz and 13.5GHz–16GHz.