Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Youn-Kwon Jung"'
Publikováno v:
Journal of the Korean Institute of Electromagnetic Engineering and Science, Vol 19, Iss 1, Pp 56-63 (2019)
Typical negative group delay circuits (NGDC) are analyzed in terms of signal attenuation, group delay, and bandwidth using S-parameters. By inverting these formulations, we derive and present the design equations (for NGD circuit elements) for a desi
Externí odkaz:
https://doaj.org/article/0f66d731a8df4fc891c88e4f979e599e
Autor:
Jinsu Park, Hong Jun Lim, Son Trinh-Van, Daesung Park, Youn Kwon Jung, Dongju Lim, Keum Cheol Hwang
Publikováno v:
Applied Sciences, Vol 12, Iss 13, p 6501 (2022)
In this study, we investigated the recent deterioration of the radiation pattern performance of conformal arrays, which are applied to fields such as aircraft and vehicles. We analyzed the radiation pattern of conformal arrays in the array factor sta
Externí odkaz:
https://doaj.org/article/e06c342dc71842ec9aa495195f46b626
Publikováno v:
The Journal of Korean Institute of Communications and Information Sciences. 45:1843-1846
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::842aa710146016ab709f1d9d35095f07
https://doi.org/10.7840/kics.2020.45.11.1843
https://doi.org/10.7840/kics.2020.45.11.1843
Publikováno v:
The Journal of Korean Institute of Communications and Information Sciences. 44:1678-1681
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::221b3bde5db92e2f158ba5e0d79f1707
https://doi.org/10.7840/kics.2019.44.9.1678
https://doi.org/10.7840/kics.2019.44.9.1678
Publikováno v:
Journal of the Korean Institute of Electromagnetic Engineering and Science, Vol 19, Iss 1, Pp 56-63 (2019)
Typical negative group delay circuits (NGDC) are analyzed in terms of signal attenuation, group delay, and bandwidth using S-parameters. By inverting these formulations, we derive and present the design equations (for NGD circuit elements) for a desi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab69d0fea62685bb966e1bd1eb7f2a95
http://www.jees.kr/upload/pdf/jees-2019-19-1-56.pdf
http://www.jees.kr/upload/pdf/jees-2019-19-1-56.pdf
Autor:
Bomson Lee, Youn-Kwon Jung
Publikováno v:
Microwave and Optical Technology Letters. 56:2619-2622
A tunable optimal load circuit (OLC) for maximum wireless power transfer efficiency is presented for a magnetically coupled resonant system at 13.56 MHz. The OLC is required to transform the standardized 50 Ω receiver impedance to an optimal load to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbc444e8d3a014659d97c84e97876a77
https://doi.org/10.1002/mop.28661
https://doi.org/10.1002/mop.28661
Dual-Band Circularly Polarized Microstrip RFID Reader Antenna Using Metamaterial Branch-Line Coupler
Autor:
Bomson Lee, Youn-Kwon Jung
Publikováno v:
IEEE Transactions on Antennas and Propagation. 60:786-791
A dual-band circularly polarized aperture coupled microstrip RFID reader antenna using a metamaterial (MTM) branch-line coupler has been designed, fabricated, and measured. The proposed antenna is fabricated on a FR-4 substrate with relative permitti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::378a6ade07805a7e0bab810c8e5593c3
https://doi.org/10.1109/tap.2011.2167943
https://doi.org/10.1109/tap.2011.2167943
Publikováno v:
Journal of electromagnetic engineering and science. 10:219-223
Based on a provided closed-form wireless power transmission (WPT) efficiency formula, which may be used for any value of load, we have analyzed the WPT efficiencies between two metamaterial-inspired loop antennas in various aspects. Due to the modeli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5087ee79a881745f842479ad937fd1a1
https://doi.org/10.5515/jkiees.2010.10.4.219
https://doi.org/10.5515/jkiees.2010.10.4.219
Autor:
Youn-Kwon Jung, Bomson Lee
Publikováno v:
Microwave and Optical Technology Letters. 52:1153-1156
This letter presents a very compact (17.5 mm × 24.2 mm or 0.18 λ0 × 0.24 λ0) and wideband balun at 3 GHz designed using the derived closed-form solutions. The EM-simulated difference of the transmitted signals at two ports is less than 0.6 dB fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f9108968be874d599f322ae733dae9f
https://doi.org/10.1002/mop.25117
https://doi.org/10.1002/mop.25117
Autor:
Bomson Lee, Youn-Kwon Jung
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 20:1084-1090
This paper presents a balun consisting of a T-junction, a Right/Left Handed Transmission line(RLH-TL), and a conventional Right Handed(RH) line. It is assumed that the RLH-TL consists of N unit-cells. We provide closed-form solutions and design a ver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::911ab956673ab07f6547fdbf5e13b1a4
https://doi.org/10.5515/kjkiees.2009.20.10.1084
https://doi.org/10.5515/kjkiees.2009.20.10.1084