Search Results - "Hae Jeong Lee"

Broadband Metasurface Absorber Based on an Optimal Combination of Copper Tiles and Chip Resistors by Kim, Yongjune, Lee, Jeong-Hae

“…In this study, a broadband metasurface absorber composed of an optimal combination of copper tiles connected with four chip resistors is designed and…”
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Elimination of interference and cross talk from a face‐to‐face‐antennas system by a metasurface absorber by Jang, Sambong, Kim, Yongjune, Lee, Jeong‐Hae

“…In this letter, a design and an experimental verification of a face‐to‐face‐antennas system combined with a metasurface absorber are presented, from which…”
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Theoretical calculation of power densities in the near‐field region of phased array antenna by Kim, Ilkyu, Lee, Jeong‐Hae

“…While a phased array antenna offers new possibilities for cutting edge technologies, implementation of the array antenna raises an important motivation for…”
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A Novel Design Method for High-Efficiency Quasi-2-bit Reconfigurable Metasurface Antennas by Nam, Yong-Hyun, Lee, Sun-Gyu, Lee, Jeong-Hae

“…This communication proposes a novel design method for a quasi-2-bit reconfigurable metasurface antenna (RMA) to improve aperture efficiency using a simple bias…”
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Omnidirectional Circularly Polarized Antenna Utilizing Zeroth-Order Resonance of Epsilon Negative Transmission Line by PARK, Byung-Chul, LEE, Jeong-Hae

“…The omnidirectional circularly polarized (CP) antenna using a circular mushroom structure with curved branches is proposed. The antenna is based on the…”
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Miniaturized square fractal ring patch unit cell for active reflective metasurface in C‐ and X‐bands by Kim, Yongjune, Lee, Sun‐Gyu, Kim, Jongyeong, Lee, Jeong‐Hae

“…A miniaturized dual‐band reflective metasurface unit cell is presented based on a square fractal copper‐ring patch combined with a PIN diode. Its structure is…”
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Revisiting the Analysis of Radiative Mid-Range Wireless Link for Pacemakers by Kim, Ilkyu, Choi, Bo-Hee, Lee, Jeong-Hae

“…The development of a wireless link for biomedical applications requires an accurate estimation of the delivered power to implanted devices. In particular, a…”
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Efficient Magnetic Resonance SIMO WPT Insensitive to Load Impedance at Short Distances by Choi, Bo-Hee, Lee, Jeong-Hae

“…In general, it is known that magnetic induction (MI) wireless power transfer (WPT) is used at a short distance (~several millimeters) and magnetic resonance…”
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Azimuthal Six-Channel Retrodirective Metagrating by Lee, Sun-Gyu, Lee, Jeong-Hae

“…This communication presents a novel azimuthal six-channel retrodirective metagrating (MG). The designed MG employs the planar hexagonal unitcell to ensure…”
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Design of Broadband and Wide-Angle Hexagonal Metamaterial Absorber Based on Optimal Tiling of Rhombus Carbon Pixels and Implantation of Copper Cylinders by Kim, Yongjune, Lee, Jeong-Hae

“…A design method for a broadband and wide-angle metamaterial absorber is proposed based on optimal tiling of rhombus carbon pixels on and implantation of metal…”
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Ultrawideband electromagnetic metamaterial absorber utilizing coherent absorptions and surface plasmon polaritons based on double layer carbon metapatterns by Kim, Yongjune, Park, Pyoungwon, Jo, Jeongdai, Lee, Joonsik, Jeong, Leekyo, Shin, Jonghwa, Lee, Jeong-Hae, Lee, Hak-Joo

“…An ultrawideband electromagnetic metamaterial absorber is proposed that consists of double-layer metapatterns optimally designed by the genetic algorithm and…”
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Two-Dimensional Efficient Broadband Retrodirective Metasurface by Hoang, The Viet, Lee, Chang-Hyun, Lee, Jeong-Hae

“…This communication presents a novel 2-D broadband retrodirective metasurface. First, a phase-gradient metasurface composed of two crossed arrays of striplines…”
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On Computing the Mutual Coupling Between Two Antennas by Kim, Ilkyu, Lee, Chang-Hyun, Lee, Jeong-Hae

“…The calculation of mutual coupling usually demands intense computations, especially for large aperture antennas placed in the near-field region of each other…”
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Efficient Near-Field Beamforming Using Two-Layer Planar Loop Array for Magnetic Resonance Wireless Power Transfer by Nam, Yong-Hyun, Lee, Jeong-Hae

“…This letter presents efficient near-field beamforming using two-layer planar loop array resonator for magnetic resonance wireless power transfer (MR WPT). This…”
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Circularly Polarized Vivaldi Antennas Integrated with Septum-like Polarizer by Kim, Ilkyu, Lee, Sun-Gyu, Nam, Yong-Hyun, Lee, Jeong-Hae

“…In this paper, two orthogonally placed Vivaldi antennas with a septum-like polarizer to generate circular polarized (CP) waves are presented. Septum polarizers…”
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A Dual-Polarized Reconfigurable Reflectarray Antenna Based on a Symmetrically Rotated Sub-Array by Lee, Sun-Gyu, Lee, Jeong-Hae

“…This paper proposes a novel method for designing a dual-polarized reconfigurable reflectarray antenna (RRA) based on a symmetrically rotated sub-array…”
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Hybrid Zeroth-Order Resonance Patch Antenna With Broad E-Plane Beamwidth by KO, Seung-Tae, LEE, Jeong-Hae

“…In this paper, a hybrid zeroth-order resonance (ZOR) patch antenna with a broad E -plane beamwidth is presented. In order to obtain the broad beamwidth of an…”
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Adaptive Impedance Matching of Wireless Power Transmission Using Multi-Loop Feed With Single Operating Frequency by PARK, Byung-Chul, LEE, Jeong-Hae

“…In this communication, an adaptive matching method to improve wireless power transmission (WPT) efficiencies using a multi-loop feed with a single operating…”
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Epsilon Negative Zeroth-Order Resonator Antenna by PARK, Jae-Hyun, RYU, Young-Ho, LEE, Jae-Gon, LEE, Jeong-Hae

“…It is confirmed that zeroth-order resonance appears in the epsilon negative (ENG) meta-structured transmission line (MTL) as well as in the conventional double…”
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Dual-Band Omnidirectional Circularly Polarized Antenna Using Zeroth- and First-Order Modes by Byung-Chul Park, Jeong-Hae Lee

“…This letter discusses the development of a dual-band omnidirectional circularly polarized (CP) antenna using the zeroth- and the first-order resonance modes of…”
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