• 16:00 – 16:20

GaN-on-Si technology for efficient RF front-ends

Achieving very high-power efficiency at mmWave frequencies is critical for the deployment of 5G and 6G radio systems. Although compound semiconductors
technologies promise to reduce the power consumption of high-power amplifiers, their low-cost fabrication on a CMOS compatible platform remains challenging. We introduce in this presentation a GaN-on-Si platform achieving 68% PAE at 28GHz. The reliability challenges will be highlighted, toghether with the transistor optimization using different materials for the front- and back-barriers.

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Bertrand Parvais

Principal Member of Technical Staff


He received his electrical engineering and Ph.D. degrees from the Université Catholique de Louvain, Louvain-la-Neuve, Belgium, in 2000 and 2004, respectively. He joined imec as a device engineer, working on the characterization and modeling of transistors in advanced CMOS technologies for analog and RF applications. From 2009 to 2016, he was involved in the design of mixed-mode and millimeter-wave CMOS circuits. He then led the team responsible for transistor compact model and design-technology co-optimization (DTCO). From 2019, he concentrates on RF technologies for Front-end-Modules, including GaN/Si and its sustainability aspects.

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Imec is a world-leading research and innovation center in nanoelectronics and digital technologies. Imec leverages its state-of-the-art R&D infrastructure and its team of more than 5,500 employees and top researchers, for R&D in advanced semiconductor and system scaling, silicon photonics, artificial intelligence, beyond 5G communications and sensing technologies, and in application domains such as health and life sciences, mobility, industry 4.0, agrofood, smart cities, sustainable energy, education, … Imec unites world-industry leaders across the semiconductor value chain, Flanders-based and international tech, pharma, medical and ICT companies, start-ups, and academia and knowledge centers. Imec is headquartered in Leuven (Belgium), and has research sites across Belgium, in the Netherlands and the USA, and representation in 3 continents. In 2021, imec’s revenue (P&L) totaled 732 million euro.

Further information on imec can be found at www.imec-int.com.

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