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- W1858115320 abstract "High electron mobility transistors (HEMTs) employing both single and quadruple GaAs/AIGaAs heterojunctions have been fabricated and tested for power at 10 GHz. The multiple heterojunction layer, with a two-dimensional electron gas (2-DEG) sheet carrier density of 3.2 x 10/sup12/ cm/sup -2/ significantly higher current capability (as required for microwave power devices) than the conventional structure where the 2-DEG density is limited to <= 10/sup 12/ cm/sup -2/. HEMTs with gate dimensions of 0.5 µm x 200 µm were mounted in X-band FET packages for rf evaluation. The QHJ HEMTs yielded a saturated power of 21 dBm (0.63 W/mm), small signal gain of 14.5 dB, power added efficiency of 39%, and third order IMD product of -19 dBc at saturation. The corresponding figures for the SHJ HEMTs were 18 dBm (0.32 W/mm), 15 dB, 43% and -14 dBc, respectively. These are the highest power densities yet reported for a HEMT." @default.
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- W1858115320 date "2005-03-23" @default.
- W1858115320 modified "2023-09-23" @default.
- W1858115320 title "Power Saturation Characteristics of GaAs/AlGaAs High Electron Mobility Transistors" @default.
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- W1858115320 doi "https://doi.org/10.1109/mcs.1985.1113637" @default.
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