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
Ultralow-Power 2.4-GHz Receiver With All Passive Sliding-IF Mixer
TL;DR: In this article, a 2.4 GHz ISM band ultralow-power receiver with a passive sliding-IF (SIF) mixer structure is presented, where a self-biased inverter-based low noise amplifier which has high FOM and good linearity in low power operation is employed.
Proceedings ArticleDOI
A highly linear dual-band Doherty power amplifier for femto-cell base stations
TL;DR: In this article, an asymmetric Doherty power amplifier (DPA) for femto-cell base station was proposed to achieve high peak-to-average-power ratio (PAPR) performance.
Proceedings Article
A highly efficient Doherty power amplifier employing optimized carrier cell
TL;DR: In this paper, a Doherty power amplifier with a load impedance larger than 100 Ω when the peaking Doherty PA is turned off was proposed to improve the efficiency at back-off output power level.
Journal ArticleDOI
DC and RF performance of LP-MOCVD grown Al/sub 0.25/Ga/sub 0.75/As/In/sub x/Ga/sub 1-x/As (x=0.15-0.28) P-HEMT's with Si-delta doped GaAs layer
TL;DR: The P-HEMT's with 0.7/spl times/60 /spl mu/m gate have a maximum extrinsic transconductance of 380 mS/mm, and a maximum current density of 300 mA/mm as discussed by the authors.
Patent
In-vivo interstitial antennas
Hee-Ran Ahn,Bumman Kim,Kwyro Lee +2 more
TL;DR: In this article, in-vivo interstitial antennas (IVIAs) for thermal treatment and deactivation of tumors by means of microwaves are described, where a microwave monopole antenna (MMA) is inserted into the medical catheter to form the IVIA.