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This work proposes an all digital clock generator (ADCG) with a new PVT compensation technique to generate a stable and accurate frequency over wide frequency ranges up to 8GHz. To compensate frequency variations by temperature changes, a novel Zero Temperature Coefficient (ZTC) algorithm using mutual compensation between the mobility and the threshold voltage of devices has been implemented. The...
We report on contact-free measurement of channel temperature of AlGaN/GaN HEMTs under different operation modes. Micro-Raman spectroscopy was successfully used to measure the temperature of operating HEMT devices with <1μm spatial resolution. Channel temperatures at various load lines were compared. The effective operating temperatures of AlGaN/GaN HEMTs were accessed from the calibration curve...
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