Sungkyunkwan University · Engineering
Professor Kang-Yoon Lee's research lab specializes in advanced electronic systems and sensors, with a strong focus on low-power and energy-harvesting circuits, biomedical device integration, and intelligent sensor systems. The lab develops innovative CMOS-based transceivers and RF-to-DC power converters for wireless applications, emphasizing high efficiency, miniaturization, and robust performance in real-world environments. It also conducts cutting-edge research in temperature-compensated piezoresistive pressure sensors for automotive and medical applications, ensuring high accuracy and reliability. Additionally, the lab explores implantable and wearable medical devices, particularly in spinal surgery outcomes and patient-centered health monitoring systems.
Figures are computed from collected data and may differ slightly.
The complication rate after posterior fusion and instrumentation for degenerative lumbar scoliosis was 68%. Abundant blood loss was a significant risk factor for early perioperative complications. The improvement of Oswestry disability index was less in patients with late complications.
This paper presents a full-CMOS transmitter and receiver for 2.0-GHz wide-band code division multiple access with direct conversion mixers and a DC-offset cancellation scheme. The direct conversion scheme combined with a multiphase sampling fractional-N prescaler alleviates the problems of the direct conversion transmitter and receiver. Digital gain control is merged into the baseband filters and variable-gain amplifiers to optimize the linearity of the system, reduce the noise, and improve the
Recently, piezoresistive-type (PRT) pressure sensors have been gaining attention in variety of applications due to their simplicity, low cost, miniature size and ruggedness. The electrical behavior of a pressure sensor is highly dependent on the temperature gradient which seriously degrades its reliability and reduces measurement accuracy. In this paper, polynomial-based adaptive digital temperature compensation is presented for automotive piezoresistive pressure sensor applications. The non-lin
In this paper, a low-power reconfigurable ambient Radio Frequency to Direct Current power (RF–DC) converter using an internal threshold voltage cancellation (IVC) scheme with an auxiliary transistors block is presented. A maximum power point tracking (MPPT) algorithm is implemented in order to maintain the high efficiency by automatically selecting the number of stages. The proposed reconfigurable converter efficiently converts the RF signals to DC voltage by dynamically controlling the threshol
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