Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Kook Joo Lee"'
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 27:261-268
In this paper, dual-polarized monopulse cassegrain antenna for W-band millimeter-wave seeker was proposed and the performances were verified by the measured results of the fabricated antenna. Dual-polarized monopulse Cassegrain antenna consists of ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b585004596fd294af23735f6b616eb0
https://doi.org/10.5515/kjkiees.2016.27.3.261
https://doi.org/10.5515/kjkiees.2016.27.3.261
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 26:1020-1026
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::213a43dac2a49c822287485ea6751807
https://doi.org/10.5515/kjkiees.2015.26.11.1020
https://doi.org/10.5515/kjkiees.2015.26.11.1020
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 24:595-601
This paper presents an optimized design of a millimeter-wave on-chip dipole antenna using CMOS process. The serious flaw of the antenna using CMOS process is low radiation efficiency because of high permittivity and conductivity. To overcome the weak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3649521821f90498b654766d4253c5da
https://doi.org/10.5515/kjkiees.2013.24.6.595
https://doi.org/10.5515/kjkiees.2013.24.6.595
Autor:
Kook-Joo Lee, Ju-Young Hyun
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 22:1111-1116
In this paper, a 60 GHz bidirectional active phase shifter with 130 nm CMOS is presented by replacing CMOS passive switchs in switched-line type phase shifter with Common Gate Amplifier(bidirectional amplifier). Bidirectional active phase shifter is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dee0103e2ff7eed2993beb2b1a1612b
https://doi.org/10.5515/kjkiees.2011.22.11.1111
https://doi.org/10.5515/kjkiees.2011.22.11.1111
Publikováno v:
The Transactions of The Korean Institute of Electrical Engineers. 60:431-434
In this paper, bandwidth enhanced design of dielectric resonator antenna fabricated in multi-layer substrate is introduced. The proposed dielectric resonator antenna is operating with fundamental TE101 mode and higher-order TM111 mode. Each resonance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df30ac69a710c693d473ab7857badb98
https://doi.org/10.5370/kiee.2011.60.2.431
https://doi.org/10.5370/kiee.2011.60.2.431
Publikováno v:
IEICE Transactions on Communications. :573-575
A dominant-mode rectangular cavity antenna design yielding an improved bandwidth is experimentally verified. Simple field theories indicate that extending the aperture height should increase the antenna bandwidth without shifting the operation freque
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fae7f594b9f3923f4fe13e6daf226ab
https://doi.org/10.1587/transcom.e94.b.573
https://doi.org/10.1587/transcom.e94.b.573
Publikováno v:
IEICE Transactions on Communications. :3632-3634
Straight microstrip lines alternately loaded with ground slots and open-end stubs are analyzed. Fabricated samples containing slots and stubs with various length combinations demonstrate constant slow-wave factors of 1.7 to 3.0 with negligible amount
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::155beed2865257437a7ab794c122570d
https://doi.org/10.1587/transcom.e93.b.3632
https://doi.org/10.1587/transcom.e93.b.3632
Publikováno v:
2007 Asia-Pacific Microwave Conference.
V-band microstrip-to-waveguide transition design suitable for monolithic integration is presented. The transition size is minimized by using a dipole instead of a tapered slot. Integrating a single transition to the MMIC chip is expected to increases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::851279edd25a3c250ac6a05203f66c86
https://doi.org/10.1109/apmc.2007.4554756
https://doi.org/10.1109/apmc.2007.4554756
Publikováno v:
American Journal of Obstetrics and Gynecology. 206:S191
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::401a33f48db6489d9e77a32571d223ea
https://doi.org/10.1016/j.ajog.2011.10.428
https://doi.org/10.1016/j.ajog.2011.10.428
Autor:
Yun Sung Woo, Sunae Seo, Hyun-Jong Chung, Dong Chul Kim, Kook Joo Lee, Dae-Young Jeon, Moonil Kim
Publikováno v:
Japanese Journal of Applied Physics. 48:091601
The radio-frequency (RF) electrical response of monolayer graphene is reported. From the measured S-parameter in the range of 10 MHz to 50 GHz, a simple equivalent resistor–inductor–capacitor (R–L–C) circuit is established to analyze frequenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb785d73fa3b2de489b8b3521e463f23
https://doi.org/10.1143/jjap.48.091601
https://doi.org/10.1143/jjap.48.091601