한양대학교 · 공학
이 교수의 연구실은 의료용 임플란트 기반의 무선 전력 전송 및 통신 기술에 중점을 두고 있으며, 특히 생체 내 장치의 안정성과 효율성을 확보하기 위한 고성능 안테나 설계와 전자기적 상호작용 평가를 핵심 연구 분야로 삼고 있습니다. 다양한 의료 기기(심박수 조절기, 신경자극기, 프로스테틱 삽입물 등)가 전자기장에 노출될 경우 발생할 수 있는 생체 반응과 에너지 흡수율(SAR)의 변화를 수치적 시뮬레이션을 통해 분석하고 있습니다. 특히, 와이파이, MICS, ISM 대역 등 다양한 주파수 대역에서 기능하는 다밴대 임플란트 안테나와 고효율 무선 전력 전송 시스템의 설계 및 안전성 평가에 기여하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
In this communication, a multiband spiral-shaped implantable antenna for scalp implantation and leadless pacemaker systems is presented. The proposed antenna has the following operational bands: medical implanted communication service (MICS) (402-405 MHz), industrial, scientific, and medical (ISM) (433.1-434.8 MHz and 2400-2483.5 MHz), and midfield (1520-1693 MHz). The recommended antenna system consists of two implantable devices: a flat-type scalp implantable device and a capsule-type leadless
Wireless power transfer (WPT) is a promising technology for enabling the long-term operation of advanced implantable medical devices (IMDs). This article presents a highly efficient near-field WPT system for wirelessly driven or rechargeable miniaturized IMDs, comprising an off-body transmitter (Tx), a flexible on-body mu-negative (MNG) metasurface slab, and an in-body receiver (Rx). The Rx element with dimensions 7.5 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="ht
Numerical dosimetry with regards to a resonance-based wireless power transfer (RBWPT) system for charging electric vehicles (EVs) has been conducted. The RBWPT system operating at 13.56 MHz frequency with a transferred power of 5.3 kW is placed below the center of the vehicle body. Specific absorption rate (SAR) in anatomically-based human models Duke and Ella with and without a medical implant is evaluated using four exposure scenarios (i.e., Duke and Ella models sitting in the EV without an im
This paper introduces a novel 9-shaped multiband frequency reconfigurable monopole antenna for wireless applications, using 1.6 mm thicker FR4 substrate and a truncated metallic ground surface. The designed antenna performs in single and dual frequency modes depending on switching states. The antenna works in a single band (WiMAX at 3.5 GHz) when the switch is in the OFF state. The dual band frequency mode (Wi-Fi at 2.45 GHz and WLAN at 5.2 GHz) is obtained when the switch is turned ON. The dire
One of the important safety aspects regarding electromagnetic fields is their coupling with medical implants in the human body. In this article, an adult model (Ella), with different medical implants, was exposed to a leaked magnetic field from a wireless power transfer (WPT) system in an electric vehicle, operating at a frequency of 85 kHz, with transferred powers of 3.7, 7.7, 11, and 22 kW. The induced electric field (E-field) in the human model, standing close to the vehicle and sitting insid
The interactions of medical implants in the human body with electromagnetic fields from newly introduced high-field technologies such as near-field wireless power transfer (WPT) are of great concern. In this study, the effects of implants on the specific absorption rate (SAR) in a head model were computationally evaluated in the immediate vicinity of a WPT system operating at 6.78 MHz with a transferred power of 50 W. The SAR in the head model located 30 mm above the WPT system was evaluated wit
Leadless cardiac pacemakers (LCPs) enhance health technology by offering a minimally invasive and reliable solution for cardiac pacing; however, their reliance on batteries poses a challenge to achieving extended device longevity. This study proposes an efficient wireless power transfer (WPT) system for LCP devices, in which the dynamic misalignments caused by the natural contraction and relaxation of heart muscles during cardiac cycles and respiratory movements are characterized for the first t
The CAROL ablation was very effective and safe in porcine lungs showing encouraging potential to overcome the conventional approaches.
