Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Sun-Ik Lee"'
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 23, Iss 5, Pp 398-404 (2023)
In this study, a dual-mode waveguide circularly polarized antenna for TC&R (telemetry, command, and ranging) was proposed for the communication between a low-orbit satellite and a ground station. The proposed antenna required both a wide −10 dB ban
Externí odkaz:
https://doaj.org/article/157ccedd745c476b9b41dd806ff41b8d
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 33:333-339
Autor:
Noel Goldthwaite, Nick Pirnia, Saqib Hasan, James B. Reynolds, David A. Bomback, Sara Mermelstein, Paul Slosar, David L Kramer, Scott Sanderson, Laurence E. Mermelstein, Bruce Bizzini, Justin C. Paul, Margaret Riordan, Jason A. Ellis, Sarita Gupta, Justin W Silverstein, Grigoriy Arutyunyan, Sun Ik Lee, Hieu T. Ball, Matthew J Goldstein, Sandeep Kunwar, Michael L. Smith, Jon Block, Joshua Marcus, Dorothy Porter
Publikováno v:
The Spine Journal. 22:296-304
BACKGROUND CONTEXT The transpsoas lateral lumbar interbody fusion (LLIF) technique is an effective alternative to traditional anterior and posterior approaches to the lumbar spine; however, nerve injuries are the most reported postoperative complicat
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 32:959-970
Autor:
Sigurd Berven, Sun Ik Lee, Praveen V. Mummaneni, Serena S. Hu, Melissa Esparza, Shane Burch, Dean Chou, Bobby Tay, S. Samuel Bederman, Vedat Deviren, Christopher P. Ames, Daniel Beckerman
Publikováno v:
Global spine journal, vol 10, iss 1
Global Spine Journal
Global Spine Journal
Study Design: Cost analysis of a retrospectively identified cohort of patients who had undergone primary single-level lumbar fusion at a single institution’s orthopedic or neurosurgery department. Objective: The purpose of this article is to analyz
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 28:49-60
본 논문에서는 임의의 정지궤도 위성의 고출력증폭기(120 W급) 후단에 구성되는 X-대역 원통형 도파관 캐비티 필터의 고전력 핸들링 능력을 연구하고, 그 결과를 제시하였다. 필터의 차수는 6
Autor:
Kyung-Whan Yeom, Sun Ik Lee
Publikováno v:
Advances in Space Research. 56:1106-1114
A new technique to improve the tracking performance of a ship-borne mobile telemetry antenna system in the marine environment is presented for Korea Space Launch Vehicle-I (KSLV-I) mission. The concept of ‘pointing bias’ is introduced to compensa
Autor:
Sun-Ik Lee, Kyung-Whan Yeom
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 25:1142-1155
The classical PCM/PSK/PM scheme has been commonly used for TC&R applications between satellites and ground stations in the S-band. We analyzed TC&R link performance between ground station and the geostationary satellite which employs PCM/PSK/PM, when
Autor:
Sun-Ik Lee, Kyung-Whan Yeom
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 25:532-541
Autor:
Kyung-Suc Nah, Kil-Hoon Lee, Gyoo-Cheol Hwang, Dong-Myung Lee, Jae-Youl Lee, Hansu Pae, Sun Ik Lee, Jung-Pil Lim, Young-hun Lee, Young-Min Choi, Dong Hoon Baek
Publikováno v:
Journal of the Society for Information Display. 20:661-668
An intra-panel interface addressing all of the high-speed, low-power, and low-electromagnetic interference (EMI) requirements for tablet personal computer applications is presented. This work proposes an adaptive clock window scheme to achieve 1.4-Gb