B
Bumman Kim
Researcher at Pohang University of Science and Technology
Publications - 395
Citations - 10494
Bumman Kim is an academic researcher from Pohang University of Science and Technology. The author has contributed to research in topics: Amplifier & RF power amplifier. The author has an hindex of 54, co-authored 395 publications receiving 9960 citations. Previous affiliations of Bumman Kim include Texas Instruments & Carnegie Mellon University.
Papers
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Journal ArticleDOI
Design of an Advanced CMOS Power Amplifier
TL;DR: Improvements to the efficiency and linearity of CMOS PAs for modern wireless communication systems incorporating high peak-toaverage ratio signals and an envelope tracking supply modulator are applied.
Journal ArticleDOI
Millimeter-wave in0.17Ga0.83 as power mesfets on GaAs(100) substrates
TL;DR: In this article, an undoped, In0.17Ga0.83As buffer layer was grown directly on GaAs and an active layer was doped to 5 × 10 + 17 cm−3.
Journal ArticleDOI
Highly efficient 3-stage Doherty power amplifier using gate bias adaption
TL;DR: Results show that the 3-stage Doherty employing the ET technique and saturated PA is the most suitable PA for the highly efficient and linear transmitter.
Proceedings ArticleDOI
Envelope tracking technique for mobile handset application (Inviter Paper)
TL;DR: The research trends in envelope tracking technique will be overviewed and new developments of the ET technology will be introduced.
Journal ArticleDOI
High-performance millimetre-wave GaAs power MESFET prepared by gas source molecular beam epitaxy
H.D. Shih,Bumman Kim,M. Wurtele +2 more
TL;DR: In this article, a state-of-the-art GaAs power MESFET prepared by gas source molecular beam epitaxy is described, which showed DC transconductance of 180mS/mm and generated power density of 0.6W/mm at 35 GHz, with 5dB gain and 28% power added efficiency.