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created_time: 2025-11-28T16:58:23.108Z
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ocr_text: High Electron Mobility Transistor\n» A high-electron-mobility transistor (HEMT) is a FET incorporating a heterojunction between\ntwo materials with different band gaps as the channel instead of a doped region (as is\ngenerally the case for a MOSFET).\n» HEMTs are used in integrated circuits as digital on-off switches & as amplifiers.\nThey are able to operate at higher frequencies than ordinary transistors, up to millimeter wave\nfrequencies.\n> Applications: high-frequency products such as cell phones, satellite television receivers, voltage\nconverters, and radar equipment. They are widely used in satellite receivers, in low power amplifiers\nand in the defense industry. Ee —\n& yy\nspacer\ntwo-dimensional\nelectron gas (2DE A A
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