Zobrazeno 1 - 10
of 395
pro vyhledávání: '"Byung-Sung Kim"'
Autor:
Kyu-Jin Choi, Reem Song, Chan-Jong Lee, Jeong-Bae Yoon, Dong-Yeol Yang, Seuk-Won Kang, Sangwook Nam, Byung-Sung Kim
Publikováno v:
IEEE Access, Vol 12, Pp 94632-94642 (2024)
This paper presents a Ka-band beam steering transmitter exploiting a coupled varactor loaded transmission line (VLTL) phase shifter and a CMOS transmitter chip with an integrated frequency multiplier. The short-coupled line couplers placed along a si
Externí odkaz:
https://doaj.org/article/fe0cdb7cfa124cbb87a8de0e9904c9e6
Autor:
Jae-Hyun Park, Taewoo Yu, Eun-Bin Kim, Seung-Yeon Kim, Reem Song, Sangwook Nam, Byung-Sung Kim
Publikováno v:
IEEE Access, Vol 11, Pp 141473-141484 (2023)
This work presents a high angular resolution radar system operating at 94 GHz, utilizing a 20-channel receiver (RXs) and a single-channel transmitter (TX) in 65-nm CMOS technology. The receiver consists of five subarray chips and each chip has four r
Externí odkaz:
https://doaj.org/article/ebbbd87ab6464a559b522e8a103fec2f
Publikováno v:
IEEE Access, Vol 11, Pp 109899-109910 (2023)
In recent years, the research on FMCW radar utilizing the mmWave band has gained significant attention, especially in its application to autonomous driving systems. As a potential replacement for lidar, high-resolution studies have been pursued, nece
Externí odkaz:
https://doaj.org/article/c718cd64111444f9804f33993e6dac23
Autor:
Taehun Kim, Jungmoon Lim, Junsung Byeon, Yuljae Cho, Woojong Kim, Jinpyo Hong, Su Jin Heo, Jae Eun Jang, Byung-Sung Kim, John Hong, Sangyeon Pak, SeungNam Cha
Publikováno v:
Small Structures, Vol 4, Iss 5, Pp n/a-n/a (2023)
The 2D semimetallic electrodes have been employed to show outstanding contact properties with 2D semiconducting transition‐metal dichalcogenides (TMDCs) channel, leading to large enhancement of 2D transistor and phototransistor performance. Herein,
Externí odkaz:
https://doaj.org/article/273d688a293e444b9744c91f0407dfa9
Autor:
Yunhyok Choi, Younsu Jung, Reem Song, Jinhwa Park, Sajjan Parajuli, Sagar Shrestha, Gyoujin Cho, Byung-Sung Kim
Publikováno v:
Nanomaterials, Vol 13, Iss 3, p 590 (2023)
The roll-to-roll (R2R) gravure process has the potential for manufacturing single-wall carbon nanotubes (SWCNT)-based thin film transistor (TFT) arrays on a flexible plastic substrate. A significant hurdle toward the commercialization of the R2R-prin
Externí odkaz:
https://doaj.org/article/7c381d2d482e41d3a855249b20c1c175
Publikováno v:
IEEE Access, Vol 8, Pp 153787-153798 (2020)
A validating approach for electromagnetic thermal (EMT) conversion of a composite broadband absorbent metamaterials (AMs) is proposed in this paper. The integrated multilayer AMs consisting of top square loop (Q-loops) array layer, middle metal plate
Externí odkaz:
https://doaj.org/article/22cd2974c43447ee923cd8ddd8c6b626
Autor:
Jun-Seong Kim, Hyun-Jin Kim, Mingeon Shin, Jae-Hyun Park, Oh-Yun Kwon, Reem Song, Sungho Lee, Sangwook Nam, Byung-Sung Kim
Publikováno v:
IEEE Access, Vol 8, Pp 213854-213865 (2020)
This work, for the first time to our best knowledge, presents a W-band multi-channel frequency-modulated continuous-wave (FMCW) radar system on low-cost FR-4 substrates. A center-fed patch array antenna on an FR-4 substrate can achieve a maximum gain
Externí odkaz:
https://doaj.org/article/0ddee7d231be43cb9dc0e74bf0a32627
Publikováno v:
IEEE Access, Vol 7, Pp 6746-6757 (2019)
This paper presents 77-GHz CMOS radar transmitter and receiver chips equipped with monopole feeders for use in frequency-modulated continuous-wave radar systems. The on-chip monopole feeder can feed not only the aperture of waveguides but also the sl
Externí odkaz:
https://doaj.org/article/6108cab9722d4e3bb3c265a0c9f823cd
Publikováno v:
Annals of Geriatric Medicine and Research, Vol 21, Iss 4, Pp 174-181 (2017)
Background : Accurate measurement of the frequency of falls is challenging because falls can only be self-reported. We hypothesized that quarterly surveys over a year would be superior to a 1-time annual survey for older adults to recall the number o
Externí odkaz:
https://doaj.org/article/459532c339de43658aafded772281d54
Autor:
Boram Kim, Chang Won Won, Jin-Young Min, Sunyoung Kim, Miji Kim, Byung-Sung Kim, Hyunrim Choi, Joosun Hong
Publikováno v:
Annals of Geriatric Medicine and Research, Vol 21, Iss 3, Pp 108-114 (2017)
Background : Falls, in older adults, can worsen physical functioning and lead to serious complications. Thus, as a means of preventive intervention, this high-risk group should be screened. The aim of the present study was to investigate whether reac
Externí odkaz:
https://doaj.org/article/7d75af658349465a870978735f5a364c