Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Woo-Su Kim"'
Autor:
Md Shafiqul Islam, Mir Kanon Ara Jannat, Mohammad Nahid Hossain, Woo-Su Kim, Soo-Wook Lee, Sung-Hyun Yang
Publikováno v:
Sensors, Vol 23, Iss 1, p 356 (2022)
Human activity recognition (HAR) has emerged as a significant area of research due to its numerous possible applications, including ambient assisted living, healthcare, abnormal behaviour detection, etc. Recently, HAR using WiFi channel state informa
Externí odkaz:
https://doaj.org/article/743c49fa3efa4d7eb9e7da34bdf02085
Publikováno v:
International Journal of Antennas and Propagation, Vol 2015 (2015)
We describe a measurement technique to characterize the equivalent isotropically radiated power (EIRP) of electrically large wireless equipment in a compact environment. A modified phase-measurement method was proposed and, thus, the separation of th
Externí odkaz:
https://doaj.org/article/2884269bdd3f4cc18e162bca2f6a5c9b
Publikováno v:
International Journal of Antennas and Propagation, Vol 2014 (2014)
This paper presents a low-profile multiband antenna suitable for wireless local area networks (WLANs), using a chip inductor and tuning stub for broadband impedance matching. The proposed antenna is compact 12×10×1 mm3 and covers three bands: 2.4-G
Externí odkaz:
https://doaj.org/article/2451c5a638c640378bc2b20e768d5aec
Publikováno v:
International Journal of Antennas and Propagation, Vol 2014 (2014)
This paper presents a low-profile dual-wideband multiple input multiple output (MIMO) antenna with low envelop correlation coefficient (ECC) for long-term evolution (LTE) and wireless fidelity (Wi-Fi) applications. The antenna covers LTE band 7 and W
Externí odkaz:
https://doaj.org/article/dae17ae1ae7c4cf4b3febf88bb612b60
Publikováno v:
International Journal of Antennas and Propagation, Vol 2013 (2013)
A triple-band rectangular ring, open-ended monopole antenna with symmetric L strips for wireless local area network (WLAN)/Worldwide Interoperability of Microwave Access (WiMAX) applications is proposed. The proposed antenna consists of two symmetric
Externí odkaz:
https://doaj.org/article/1e0c97209f344316aba0738607bad548
Publikováno v:
2023 International Conference on Electronics, Information, and Communication (ICEIC).
Autor:
Woo-Su Kim, Joong-Han Yoon
Publikováno v:
Journal of information and communication convergence engineering. 13:159-166
In this paper, a novel design for a triple-band coplanar waveguide (CPW)-fed monopole antenna for WLAN/WiMAX operations is proposed. The proposed antenna is printed on an FR4 substrate with an area of 22.0 mm × 30.0 mm, a thickness of 1.0 mm, and a
Publikováno v:
Microwave and Optical Technology Letters. 57:2617-2622
We propose a low-cost measurement technique of commercially available base-station antenna in a compact experimental setting, which may be considerably smaller than the far-field distance. An α-variable positioner was utilized with Fresnel-to-far-fi
Autor:
Woo-Su Kim, Sun-Ho Choi
Publikováno v:
Progress In Electromagnetics Research C. 57:81-87
An internal dual-band flexible antenna is described. The antenna employs a rectangular patch to improve the interrogation range (above 100 mm) for near-field communications (NFC), as well as the passive average gain performance (above −20 dBi) for
Autor:
Hwa-Choon Lee, Cheol Yoon, Chan Seop Park, Ludovic Chares, Sung Ook Hwang, In Seop Yoon, Woo-Su Kim, Hyo-Dal Park
Publikováno v:
Microwave and Optical Technology Letters. 57:406-409
This article proposes a mobile embedded antenna having tunable capacitance, and the validity of the proposed solution has been proven through its design, fabrication, and measurement. The antenna can be applied to long-term evolution (LTE) and DCS/PC