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Won-Kyu Choi
Researcher at Electronics and Telecommunications Research Institute
Publications - 56
Citations - 1009
Won-Kyu Choi is an academic researcher from Electronics and Telecommunications Research Institute. The author has contributed to research in topics: Antenna (radio) & Microstrip antenna. The author has an hindex of 15, co-authored 55 publications receiving 952 citations.
Papers
More filters
Journal ArticleDOI
Novel U-slot and V-slot DGSs for bandstop filter with improved Q factor
TL;DR: In this article, two different geometries (U-slot and V-slot DGSs) are investigated to provide a band-rejection property with an improved Q factor.
Patent
Antenna using inductively coupled feeding method, RFID tag using the same and antenna impedance matching method thereof
TL;DR: In this paper, an antenna using an inductively coupled feeding method, a Radio Frequency Identification (RFID) tag thereof, and an antenna impedance matching method thereof, are provided; the antenna includes a resonator for determining a resonance frequency of the antenna and a feeder for providing an RF signal to an element connected to the antenna.
Journal ArticleDOI
A High-Gain Microstrip Patch Array Antenna Using a Superstrate Layer
TL;DR: A dielectric superstrate layer above a microstrip patch antenna has remarkable effects on its gain and resonant characteristics and the gain of a single patch with asuperstrate was enhanced by about 4 dBi over the one without a superstrate at 12 GHz.
Journal ArticleDOI
An RFID Tag Using a Planar Inverted-F Antenna Capable of Being Stuck to Metallic Objects
TL;DR: The designed PIFA, which uses a dielectric substrate for the antenna, consists of a U-slot patch for size reduction, several shorting pins, and a coplanar waveguide feeding structure to easily integrate with an RFID chip.
Journal ArticleDOI
UHF RFID tag antenna using two PIFAs embedded in metallic objects
TL;DR: In this paper, an embedded patch-type RFID tag antenna (UHF band) using ceramic material for tagging metallic objects is presented; the proposed tag is embedded in the metallic object; the diameter of the tag is 34 mm and the height is 5 mm.