Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Gi Ho Kim"'
Publikováno v:
Journal of Korean Society of Water and Wastewater. 27:383-394
A sedimentation basin is used to remove suspended sediments which can cause abrasive and erosive wear on hydraulic turbines of hydropower plants. This sediment erosion not only decreases efficiency of the turbine but also increases maintenance costs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fe35332013effa6de3cfe40085d8445
https://doi.org/10.11001/jksww.2013.27.3.383
https://doi.org/10.11001/jksww.2013.27.3.383
Publikováno v:
Journal of the Korean Geotechnical Society. 29:53-64
Resistivity monitoring is based on the fact that a change in the porosity leads to the changes in water content and fine particles, which alter the electrical resistivity. At every embankment dam, internal erosion always occurs as time passes. The in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f75c1611723e17d77e1b4ee8916ed6b
https://doi.org/10.7843/kgs.2013.29.5.53
https://doi.org/10.7843/kgs.2013.29.5.53
Publikováno v:
Microwave and Optical Technology Letters. 53:2132-2135
This article describes the design, fabrication, and measurement of an internal FM radio ferrite sheet flexible antenna using an arrow-shaped patch to enhance passive gain performance for mobile handsets.To obtain sufficient passive gain performance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c639f79ba10398f076939ea0da813a35
https://doi.org/10.1002/mop.26180
https://doi.org/10.1002/mop.26180
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 10:603-606
A long-term evolution (LTE) MIMO ferrite antenna was fabricated on Ni0.5Mn0.2Co0.07Fe2.23O4 ferrite substrate (14 × 7 × 3 mm3) and characterized for antenna performance. Measured return loss and isolation were -26 and -16.4 dB at 720 MHz, respectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::993195e41d2e067ede46a393bafb5766
https://doi.org/10.1109/lawp.2011.2159468
https://doi.org/10.1109/lawp.2011.2159468
Publikováno v:
Microwave and Optical Technology Letters. 53:418-422
A multiband internal multiple-input multiple-output (MIMO) antenna for USB dongle applications is proposed. Two types of antenna element are used to construct a MIMO antenna system. The resonance frequencies of the MIMO antenna are controlled by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74e9f5ae73d590ccee77d2ef5d106fd5
https://doi.org/10.1002/mop.25742
https://doi.org/10.1002/mop.25742
Autor:
Jaejin Lee, Won Ki Ahn, Juk Sik Kum, Gi-Ho Kim, Gavin S. Abo, Seok Bae, Sang-Hoon Park, Jeevan Jalli, Won Mo Seong, Yang-Ki Hong, Ji Hoodn Park
Publikováno v:
Microwave and Optical Technology Letters. 53:14-17
Dual-band ferrite chip antenna having 105 mm3 of volume was fabricated with Ba3Co2Fe24O41(Co2Z)-glass composite and antenna performance was evaluated. The permeability and permittivity of the composite were in the range of 1.92–2.12 and 7.33–7.45
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::251a27b07df7787922e2ad4a1114b1fc
https://doi.org/10.1002/mop.25672
https://doi.org/10.1002/mop.25672
Publikováno v:
Microwave and Optical Technology Letters. 53:87-90
A method to extend the bandwidth of epsilon negative (ENG) zeroth-order resonator (ZOR) antennas using a Co2Y hexagonal ferrite (Ba2Co1Zn0.7Cu0.3Fe12O22) is presented.It is accomplished by using the ferrite helical loading for shunt inductance of ENG
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::682c0211559d7f598368b2da1a7bb260
https://doi.org/10.1002/mop.25650
https://doi.org/10.1002/mop.25650
Publikováno v:
Microwave and Optical Technology Letters. 52:1298-1301
A compact quad-band antenna using zeroth-order resonator (ZOR) for GSM850, DCS1800, PCS1900, and UMTS operations are presented. The proposed antenna comprises a lower band ZOR portion and an upper band ZOR portion. The zeroth-order resonant propertie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9678fefcfd18e66c68e224d9dd297981
https://doi.org/10.1002/mop.25160
https://doi.org/10.1002/mop.25160
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 21:194-201
We propose a frequency selective surface(FSS) using double split ring resonators(DSRRs) for isolation enhancement between CDMA and RFID. The structure consists of an outer SRR and an inner SRR, and the gaps are formed in the same direction. By proper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd0b6ee1d5c0ff3a97aa6bbb8e8e8dde
https://doi.org/10.5515/kjkiees.2010.21.2.194
https://doi.org/10.5515/kjkiees.2010.21.2.194
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 9:36-39
A method to extend the bandwidth of metamaterial (MTM) antennas using a composite right/left-handed transmission line (CRLH-TL) is presented. The resonance modes and wideband characteristics of MTM antennas are analyzed and described using dispersion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4538d20c8f6f675277a279123ddeefff
https://doi.org/10.1109/lawp.2010.2041628
https://doi.org/10.1109/lawp.2010.2041628