Sunkyu Kong

Learn More
Dietary potassium may neutralize acid load and reduce calcium loss from the bone, leading to beneficial effect on bone mineral density. In this nationwide Korean population study, dietary potassium intake was associated with improved bone mineral density in older men and postmenopausal women. Nutrition is a major modifiable factor that affects bone health.(More)
There are multiple electrical devices on automotive system, which are control devices, communication devices, and digital devices. Each electrical device can generate magnetic field, one of the critical radiated electro-magnetic interference (EMI) elements. The operating frequency of each device is different and it means that the bandwidth of magnetic field(More)
Simultaneous switching noise (SSN) is caused by the simultaneous switching of a group of I/O drivers, and is proportional to the total inductance and the rate of change of the switching current. This often leads to signal distortion and degradation of signal and power integrity of systems. Furthermore, with the continuously decreasing operating voltage,(More)
Wireless power transfer (WPT) using magnetic resonance could provide much convenience and so there has been much commercial interests on WPT recently. In the near future, WPT technology is expected to be applied to various electronic devices with transceiver coils for WPT. The coils in different electronic devices for WPT, then, could cause interference on(More)
The radio frequency interference (RFI) problems are critical issue for communication devices. Among the components of the communication devices, the Analog-to-digital converter (ADC) is one of the important device which is related to the RFI problems, because of two reasons: one is that it is difficult to decouple the coupled noise after converting to the(More)
Current wireless power transfer (WPT) technology can only allow power transfer over a limited distance because, as the distance between the transmitter (Tx) and receiver (Rx) coils increases, the power transfer efficiency (PTE) decreases with a steep slope, while the electromagnetic field (EMF) leakage increases. In order to increase the PTE and decrease(More)
Wireless power transfer (WPT) technology has recently emerged as an innovative and promising technology, and its electromagnetic compatibility (EMC) has become a significant issue. In this study, we investigated the electromagnetic (EM) radiated emission and interference generated by WPT systems using resonant magnetic field coupling, especially in(More)