Reconfigurable mmWave Microchips Integrate hBN Switches on GaN Substrates - Bioengineer.org

This technological breakthrough represents a significant advancement in the semiconductor industry's mmWave communication capabilities. The successful integration of hexagonal boron nitride (hBN) swit... Read original →

The hetero-integration of hBN switches on GaN substrates triggers a cascade across the RF semiconductor stack: upstream, EUV-based sub-3nm processes face heightened thermal constraints that hBN’s ultra-low dielectric loss mitigates; downstream, reconfigurable mmWave front-ends enable dynamic beamforming for 5G base stations and LEO terminals. With U.S. export controls tightening on GaN epitaxial wafers, foundries in Taiwan, China and mainland China risk supply disruption if they lack in-house hBN transfer capabilities. Expect Qorvo and Infineon to aggressively acquire 2D-material startups, while Skyworks may double down on SOI to sidestep material bottlenecks. Within 18 months, this shift will catalyze field-programmable RF architectures, spurring demand for new EDA flows, test methodologies, and wafer-level heterogeneous integration capacity at OSATs.