Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Seongjung Kim"'
Autor:
Seongjung Kim, Sangwook Nam
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 24, Iss 5, Pp 504-509 (2024)
In this study, we propose a method for designing a feeding network for all port-matched and high gain dipole subarray antennas excited by uniform current mode (UCM) by considering the mutual coupling effect. By analyzing the array impedance matrix, w
Externí odkaz:
https://doaj.org/article/e3c95292da7240cfb3e060dadecb8107
Autor:
Seongjung Kim, Sangwook Nam
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 24, Iss 5, Pp 541-543 (2024)
This letter introduces a novel wideband, low profile, tightly coupled dipole subarray for wireless communication systems. The proposed subarray, composed of 3 × 3 unit elements, offers a planar structure with high aperture efficiency. The unit eleme
Externí odkaz:
https://doaj.org/article/450195ea82524f15adbe2c667ef19f67
Publikováno v:
Clinical and Experimental Emergency Medicine, Vol 10, Iss S, Pp S26-S35 (2023)
Objective With general aging of the population, emergency department (ED) utilization by elderly patients is increasing. In this study, we analyzed data on ED visits of patients aged 65 years and older in Korea. Methods The study is a retrospective a
Externí odkaz:
https://doaj.org/article/1cf00a84d2864c73b6506e827add6832
Autor:
Jin Hyuck Hong, So Hyun Paek, Taerim Kim, Seongjung Kim, Eunsil Ko, Young Sun Ro, Jungeon Kim, Jae Hyun Kwon
Publikováno v:
Clinical and Experimental Emergency Medicine, Vol 10, Iss S, Pp S13-S25 (2023)
Objective As of 2018, approximately 1.2 million pediatric patients visited emergency departments (EDs) in Korea, showing a steady increase. Given the distinct differences between children and adults, it is vital to examine the epidemiological charact
Externí odkaz:
https://doaj.org/article/2a0a456c56e74f30b969e442221f9f5f
Autor:
Hyun Ho Yoo, Young Sun Ro, Eunsil Ko, Jin-Hee Lee, So-hyun Han, Taerim Kim, Tae Gun Shin, Seongjung Kim, Hansol Chang
Publikováno v:
Clinical and Experimental Emergency Medicine, Vol 10, Iss S, Pp S1-S12 (2023)
Objective This study analyzed trends in emergency department (ED) visits in Korea using the National Emergency Department Information System (NEDIS) data from 2018 to 2022. Methods This was a retrospective observational study using data from the NEDI
Externí odkaz:
https://doaj.org/article/e2df1f20bc0c450dbb4ecbb7b0f630e5
Autor:
Seongjung Kim, Sangwook Nam
Publikováno v:
IEEE Access, Vol 10, Pp 52116-52125 (2022)
Herein, we design a polarization convertor (PC) using two orthogonally polarized, tightly coupled dipole arrays (TCDAs) connected in cascade, of which one is used for the reception of incident waves and the other is used for their transmission. The o
Externí odkaz:
https://doaj.org/article/5f04b1516f53410e986b3cc4a0f89b5d
Autor:
Seongjung Kim, Sangwook Nam
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 22, Iss 4, Pp 534-536 (2022)
In this study, a modular array antenna with low mutual coupling is proposed for operation in a Ku-band (12–18 GHz) reconfigurable array, which consists of a ground frame board, element blocks, spacing blocks, and connecting rods. The modular elemen
Externí odkaz:
https://doaj.org/article/a0f63b3f12e74949be29467bb29961f3
Publikováno v:
IEEE Access, Vol 6, Pp 8909-8915 (2018)
For the prevention and management of diseases in chronic patients, attention has been directed at ubiquitous healthcare systems in order to reduce medical expenses and provide high-quality medical services at different places, including hospitals and
Externí odkaz:
https://doaj.org/article/355a14985d914269bb7c265aa1e20f70
Autor:
Seongjung Kim, Sangwook Nam
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 21:2517-2521
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c34ea6aa2bf28e36cf6f89761b9a721
https://doi.org/10.1109/lawp.2022.3199695
https://doi.org/10.1109/lawp.2022.3199695
Autor:
Seongjung Kim, Sangwook Nam
Publikováno v:
IEEE Transactions on Antennas and Propagation. 69:5682-5690
In this article, an ultra-wideband and wide-angle insensitive absorber is proposed. The unit cell of the proposed structure consists of a tightly coupled dipole array (TCDA2) under another TCDA (TCDA1) that is twice the height of TCDA2 (TCDA-under-TC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3e9f137ac8741b6ee5a3c3c73116afa
https://doi.org/10.1109/tap.2021.3061008
https://doi.org/10.1109/tap.2021.3061008