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A highly efficient 1.9-GHz Si high-power MOS amplifier

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4 Author(s)
Yoshida, I. ; Semicond. & Integrated Circuits Div., Hitachi Ltd., Kokubunji, Japan ; Katsueda, M. ; Maruyama, Y. ; Kohjiro, Iwamichi

A 1.9-GHz Si power MOSFET with 50% power-added efficiency and 0.3-1.0 W output power at a 3-5 V supply voltage has been developed for use as a high-power amplifier in cellular telephones. This MOSFET achieves high efficiency and high-power gain at low supply voltage by using a 0.5-μm gate power MOSFET with an Al-shorted metal-silicide/Si gate structure, which improves the cut-off frequency and reduces the on-state resistance

Published in:
Electron Devices, IEEE Transactions on  (Volume:45 ,  Issue: 4 )

Date of Publication: Apr 1998

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