C
Cheol-Sig Pyo
Researcher at Electronics and Telecommunications Research Institute
Publications - 162
Citations - 2508
Cheol-Sig Pyo is an academic researcher from Electronics and Telecommunications Research Institute. The author has contributed to research in topics: Sensor node & Antenna (radio). The author has an hindex of 23, co-authored 161 publications receiving 2330 citations.
Papers
More filters
Journal ArticleDOI
Design of RFID tag antennas using an inductively coupled feed
Hae-Won Son,Cheol-Sig Pyo +1 more
TL;DR: In this paper, an inductively coupled feed method is explored to design UHF radio frequency identification tag antennas, and an analytical model for the proposed feed structure is derived and used to perform simple and wideband impedance match between an antenna and a tag chip without any additional matching networks.
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.
Journal ArticleDOI
A Low-Power RF Direct-Conversion Receiver/Transmitter for 2.4-GHz-Band IEEE 802.15.4 Standard in 0.18- $\mu{\hbox {m}}$ CMOS Technology
Trung-Kien Nguyen,V. Krizhanovskii,Jeong-Seon Lee,Seok-Kyun Han,Sang-Gug Lee,Nae-Soo Kim,Cheol-Sig Pyo +6 more
TL;DR: This paper presents a low-power RF receiver/transmitter front-end for 2.4-GHz-band IEEE 802.15.4 standard in 0.18-mum CMOS technology, which shows high-linearity performance, leading to overall RF receiver linearity improvement.
Patent
Wireless sensor network and adaptive method for monitoring the security thereof
TL;DR: In this article, a trust estimator in a node architecture is used to evaluate trustworthiness of a neighbor sensor node by determining a personal reference and receiving personal references from jury sensor nodes.
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.