This article discussed the development of an RF GaN on Si technology for wireless infrastructure that improves the cost-performance value of GaN. After many years of GaN on Si development, the technology has matured to deliver its potential, providing efficiency on par with GaN on SIC at a lower cost based on Si wafer processing. This article has shown GaN on Si can meet the efficiency, linearization and power density requirements of 5G wireless communication systems. We believe this is the start of a longer journey, where further industry developments will push the capabilities of GaN on Si to higher frequencies and higher power levels, potentially expanding applications beyond wireless infrastructure.
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