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Technology

High Electron Mobility Transistors for Millimeter-Wave Radar

Quick fact

HEMTs can switch at speeds exceeding 100 GHz, making them essential for the millimeter-wave radars used in autonomous vehicles and high-resolution security scanners.

Why this is interesting

Your car’s radar can detect a pedestrian at 200 meters, yet the transistor inside it is smaller than a grain of rice. How does such a tiny device generate the super-fast signals that make this possible?