• Publications
  • Influence
Adaptive Digital Feedback Predistortion Technique for Linearizing Power Amplifiers
  • Y. Woo, J. Kim, +4 authors B. Kim
  • Computer Science
  • IEEE Transactions on Microwave Theory and…
  • 7 May 2007
We have developed a new adaptive digital predistortion (DPD) linearization technique based on analog feedback predistort (FBPD). Expand
  • 119
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Analysis and experiments for high-efficiency class-F and inverse class-F power amplifiers
This paper presents analytic and experimental comparisons for high-efficiency class-F and inverse class-F amplifiers. The analytic formula of the efficiencies, output powers, dc power dissipations,Expand
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  • 5
  • PDF
Optimum design for linearity and efficiency of a microwave doherty amplifier using a new load matching technique
A Doherty amplifier with full load matching circuits of the carrier and peaking amplifiers at both low and high power levels is demonstrated for the first time. In the circuit design, sections ofExpand
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  • PDF
Analysis of a Fully Matched Saturated Doherty Amplifier With Excellent Efficiency
  • J. Kim, J. Moon, +4 authors B. Kim
  • Engineering
  • IEEE Transactions on Microwave Theory and…
  • 1 February 2008
A saturated Doherty amplifier based on class-F amplifiers is analyzed in terms of its load modulation behavior, efficiency, and linearity. Simulations included the amplitude ratio and phaseExpand
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A New Wideband Adaptive Digital Predistortion Technique Employing Feedback Linearization
We develop a new wideband digital feedback predistortion (WDFBPD) technique for modulated signals with wide bandwidths by combining digital feedback predistortion (DFBPD) linearization andExpand
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Weighted Polynomial Digital Predistortion for Low Memory Effect Doherty Power Amplifier
  • S. Hong, Y. Woo, +5 authors B. Kim
  • Mathematics
  • IEEE Transactions on Microwave Theory and…
  • 7 May 2007
We have proposed a simple and effective weighted polynomial digital predistortion algorithm, which consists of weighting, least square polynomial fit, and de-weighting. The weighting factor isExpand
  • 34
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High-Efficiency Hybrid EER Transmitter Using Optimized Power Amplifier
This paper describes a new design approach for a power amplifier (PA) of the highly efficient hybrid envelope elimination and restoration (H-EER) transmitter. Since the PA operates mostly at theExpand
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A new empirical large-signal model of Si LDMOSFETs for high-power amplifier design
We propose a new empirical large-signal model of silicon laterally diffused MOSFETs for the design of various modes of high-power amplifiers. The new channel current model has only nine parametersExpand
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Linear power amplifier based on 3-way Doherty amplifier with predistorter
This paper presents a 3-way Doherty amplifier with predistorter (PD) for a repeater application. Expand
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A highly efficient Doherty power amplifier employing optimized carrier cell
  • J. Moon, Y. Woo, B. Kim
  • Engineering
  • European Microwave Integrated Circuits Conference…
  • 30 October 2009
We have proposed a novel design of the Doherty power amplifier (PA) to improve the efficiency at a back-off output power level. It is shown that the carrier PA having 100 Ω load impedance is not anExpand
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