Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Pyoungwon Park"'
Autor:
Changhyeong Lee, Kichul Kim, Pyoungwon Park, Yunseok Jang, Jeongdai Jo, Taein Choi, Hakjoo Lee
Publikováno v:
Materials, Vol 16, Iss 17, p 5916 (2023)
An ultra-wideband electromagnetic (EM) absorber is proposed. The proposed absorber consists of two thin metasurfaces, four dielectric layers, a glass fiber reinforced polymer (GFRP), and a carbon fiber reinforced polymer (CFRP) which works as a condu
Externí odkaz:
https://doaj.org/article/48a4a18df522480bad9d2abb10a48eb0
Autor:
Yongjune Kim, Pyoungwon Park, Jeongdai Jo, Joonsik Lee, Leekyo Jeong, Jonghwa Shin, Jeong-Hae Lee, Hak-Joo Lee
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
Abstract An ultrawideband electromagnetic metamaterial absorber is proposed that consists of double-layer metapatterns optimally designed by the genetic algorithm and printed using carbon paste. By setting the sheet resistance of the intermediate car
Externí odkaz:
https://doaj.org/article/79e4c3f2023f4708a20e3d4b7ce6c680
Autor:
Jaeyoung Kim, Kyungrok Kim, Hyunchang Kim, Pyoungwon Park, Seonghyun Lee, Taikmin Lee, Dongwoo Kang
Publikováno v:
Sensors, Vol 22, Iss 8, p 2917 (2022)
In this paper, experimental validation of high precision web handling for a two-actuator-based roll-to-roll (R2R) system is presented. To achieve this, the tension control loop is utilized to regulate the tension in the unwinder module, and the veloc
Externí odkaz:
https://doaj.org/article/3907e0c0c0814729a714c6de14ba9914
Autor:
Kwon Sin, Pyoungwon Park, Young-Man Choi, Truong Sinh Nguyen, Ga Eul Kim, Kyunghoon Kim, Seho Kim, Kyung-Rok Kim, Kwang Young Kim, Seung-Hyun Lee
Publikováno v:
Review of Scientific Instruments. 92:103906
Demand for high throughput manufacturing has recently increased in various fields, such as electronics, photonics, optical devices, and energy. Moreover, flexible electronic devices are indispensable in applications such as touch screens, transparent
Autor:
Thanh Huy Phung, Anton Nailevich Gafurov, Kim In Young, Pyoungwon Park, Dongho Oh, Taik-Min Lee, Hyun-Chang Kim, Jaehyeong Jeong, Kang Dong Woo
Publikováno v:
Flexible and Printed Electronics. 6:024003
Autor:
Taik-Min Lee, Dongho Oh, Kang Dong Woo, Jaehyeong Jeong, Hyun-Chang Kim, Pyoungwon Park, Anton Nailevich Gafurov, Kim In Young
Publikováno v:
Flexible and Printed Electronics. 6:015005
This study proposes the design of a roll-to-roll system for flexible electronics that enables accurate and precise tension control. It analyzes the factors for change in the tension of a roll-to-roll system and develops a tension model for each secti
Publikováno v:
2017 Progress in Electromagnetics Research Symposium - Fall (PIERS - FALL).
This paper presents a MEMS-based temperature stable timing device with single point calibration temperature sensor in 0.18 μm CMOS process. The timing device could generate 1 MHz to 100 MHz output with 1ppm resolution. The frequency stability with t
Publikováno v:
IEEE Journal of Solid-State Circuits. 50:1571-1580
This paper describes the design of a temperature sensor based on integrated poly-silicon thermistors. The thermistors are incorporated in a Wien-bridge RC filter, which, in turn, is embedded in a frequency-locked loop. The loop's output frequency is
Publikováno v:
IEEE Journal of Solid-State Circuits. 47:2433-2443
This paper presents a nested-PLL architecture for a low-noise wide-bandwidth fractional-N frequency synthesizer. In order to reduce the quantization noise, operating frequency of ΔΣ modulator (DSM) is increased by using an intermediate output of fe
Publikováno v:
ESSCIRC