SiGe, GaN, and InP Power Amplifiers and mmWave Antennas for Radar and 6G
This community designs high-frequency radio frequency circuits and antennas, specifically power amplifiers and phased arrays, for radar systems, automotive sensing, and next-generation wireless communications.
The work centers on monolithic microwave integrated circuits (MMICs) built on silicon-germanium (SiGe), gallium nitride (GaN), and indium phosphide (InP) substrates. Recurring design techniques include Doherty topology for efficiency, broadband matching networks, and compact phase shifters for beamforming. Applications explicitly named in the literature include automotive radar, millimeter-wave (mmWave) and terahertz (THz) communications, and 6G network infrastructure. The research focuses on achieving high output power, linearity, and integration density in these specific semiconductor technologies.
The community is most heavily represented in Germanium research, accounting for 8.7% of all tracked Germanium papers, and in Gallium research, where it constitutes 2.2% of the total. Silicon contributes the highest absolute paper count within this group, with 7,642 papers, though it represents a smaller share of the broader Silicon research base.
The community comprises 17,967 papers, published primarily in IEEE Transactions on Microwave Theory and Techniques, IEEE Microwave and Wireless Components Letters, and Microwave and Optical Technology Letters.
Recent work continues to focus on GaN-based Doherty power amplifiers for 6G frequency ranges and machine-learning-driven optimization of THz MIMO antennas, alongside designs for reconfigurable fluid antennas and high-linearity phased-array beamformers.