Hyun Chul Choi
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Explore the profile of Hyun Chul Choi including associated specialties, affiliations and a list of published articles.
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Articles
38
Citations
165
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Recent Articles
1.
J A, Palaniswamy S, Kumar S, Kanagasabai M, Choi H, Kim K
Sci Rep
. 2024 Oct;
14(1):25104.
PMID: 39443604
This paper introduces a novel design featuring a thirty-two port diversity antenna with an elliptical shape, fed by an asymmetric coplanar waveguide (CPW). The antenna incorporates uneven meander lines, tailored...
2.
Sharma D, Kumar S, Tiwari R, Choi H, Kim K
Sci Rep
. 2024 Jun;
14(1):14493.
PMID: 38914590
In this paper, a compact low-profile dual-band wearable textile antenna is proposed for on-body and off-body communications. The presented antenna works efficiently in the 5G n79 frequency band (4.4 - ...
3.
Singh N, Khan T, Kumar S, Kanaujia B, Choi H, Kim K, et al.
Sci Rep
. 2024 Mar;
14(1):7447.
PMID: 38548782
This paper proposes a circularly polarized ultra-thin flexible antenna with a flexible rectifier and power management unit (PMU) for smartwatch/wristband applications. The flexible antenna is compact (0.17λ × 0.20λ × ...
4.
Kumar S, Palaniswamy S, Choi H, Kim K
Sensors (Basel)
. 2022 Dec;
22(24).
PMID: 36560197
In this paper, a compact dual circularly-polarized (CP) planar multiple-input-multiple-output (MIMO) antenna is presented for a sub-6 GHz frequency band. The antenna consists of four identical resonating elements, which are...
5.
Min B, Lee G, Lee J, Nashuha S, Choi H, Kim K
Sensors (Basel)
. 2022 Sep;
22(18).
PMID: 36146222
A conventional differential line (DL), commonly used on typical digital circuit boards for transmitting high-speed digital data, has fundamental limitations on the maximum signal bandwidth (~10 GHz), mainly due to...
6.
Kim J, Jo Y, Kim J, Choi M, Lee S, Choi H
Chemosphere
. 2022 Aug;
307(Pt 3):135838.
PMID: 35963384
This study explored the impact of gas treatments on the structures of multi-walled carbon nanotubes supported Pd (CNT-Pd) catalysts used for electrocatalytic HO reduction and the Heck cross-coupling reaction. The...
7.
Kaim V, Kanaujia B, Kumar S, Choi H, Kim K, Rambabu K
IEEE Trans Biomed Eng
. 2022 May;
69(11):3504-3515.
PMID: 35503844
Objective: This paper presents the design of an electrically small circularly polarized (CP) 3 × 3 mm antenna system as an intraocular unit for retinal prosthesis application. Methods: The system...
8.
Kumar S, Lee G, Kim D, Choi H, Kim K
Sensors (Basel)
. 2020 Oct;
20(19).
PMID: 33008135
A broadband compact-sized planar four-port multiple-input-multiple-output (MIMO) antenna with polarization diversity is presented. The proposed dual circularly polarized (CP) MIMO antenna consists of four G-shaped monopole elements, two of which...
9.
Kaim V, Kanaujia B, Kumar S, Choi H, Kim K, Rambabu K
Sci Rep
. 2020 Apr;
10(1):6795.
PMID: 32321962
The paper presents a coplanar waveguide (CPW)-fed ultra-miniaturized patch antenna operating in Industrial, Scientific and Medical (ISM) band (2.4-2.5 GHz) for biotelemetry applications. The proposed antenna structure is circular in...
10.
Choi J, Lee D, Park M, Park J, Lee J, Baek J, et al.
Opt Express
. 2019 Nov;
27(20):29178-29195.
PMID: 31684656
We herein propose a multiwalled carbon nanotube (MWCNT) doping method into liquid crystal (LC) alignment polyimides (PIs) with low resistivity for resolving both issues of voltage holding and image sticking...