System technology co-optimization for high speed/high frequency chiplets and heterogeneous integration packaging

The semiconductor industry is evolving towards a chiplet ecosystem, where large integrated circuits (ICs) are broken down into smaller, standardized functional chiplets that are reassembled at the interposer level. This approach reduces manufacturing costs by leveraging more cost-effective processes, rather than relying on the latest cutting-edge technologies. Since chiplets are often developed by different manufacturers using various technology nodes and materials, they must be integrated into a heterogeneous platform to work seamlessly together.

This PhD focuses on the co-optimization of system and technology for high-speed/high-frequency chiplets and the imec RF interposer as a heterogeneous integration platform. It aims to enable innovative system concepts and the necessary system-technology co-optimization for the next generation of wireless communications and high-speed data transmission, including optical and RF hybrid systems.

Research Goals:

• Literature Review & Benchmarking: Investigate the latest advancements in chiplet systems, packaging technologies, and RF-optical hybrid systems.
• Development of Low-Loss Interconnects:
  • Focus on developing novel conductors and dielectrics compatible with foundries.
  • Optimize design methodologies to reduce signal loss and enhance performance.
• Modeling & Design of Passive Components: Design and model passive components on the RF Si interposer, optimized for the 100-300 GHz frequency range.
• RF and Optical Integration: Enable seamless integration of RF and optical data transmission, bridging the gap between electrical and optical systems using the imec RF Si interposer to facilitate high-speed data transfer for data centers.

Research Environment:
You will collaborate with experts in 3D technology and RF design at imec, a world-class R&D center, across multiple departments and teams. Your daily advisor will be Xiao Sun, a leading scientist at imec, and your PhD will be supervised by Prof. Nadine Collaert from Vrije Universiteit Brussel (VUB).