Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Seok-Hee Bae"'
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 9, Iss 1, Pp 52-68 (1992)
The ionosphere in accordance with solar activity can affect the transmission of radio waves. The effect of the ionosphere on the radio wave propagation are scattering of radio waves, attenuation, angle error, ranging error, and time delay. The presen
Externí odkaz:
https://doaj.org/article/4b59be899f0e4a94bb1544df28cb9920
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 9, Iss 1, Pp 69-88 (1992)
The effects of the ionosphere on the radio wave propagation are scattering of radio waves, attenuation, angle error, ranging error, and time delay. If ionospheric conditions are suitable, the charged particles can remove energy from radio waves and t
Externí odkaz:
https://doaj.org/article/d2a2fb7de918420598a7edfeb01aef7e
Autor:
Myung-Don Kim, Jeong-Ki Pack, Hyun-Kyu Chung, Tae-Hong Kim, Won-Jeong Jeong, Ji-Ho Yoo, Seok-Hee Bae
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 21:179-187
The use of high frequency band, broad band and MIMO antenna is expected in the next generation mobile communication system. By the rapid increase of demand for wireless communications and the explosive increase of the mobile communication services, r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0555481a4022f8c3ac93315afc06c8c7
https://doi.org/10.5515/kjkiees.2010.21.2.179
https://doi.org/10.5515/kjkiees.2010.21.2.179
Autor:
Jae-Woo Lim, Jae-Rim Oh, Se-Woong Kwon, Joung-Soo Park, Seok-Hee Bae, Young-Gyu Kim, Hyun-Wook Moon, Young Joong Yoon
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 20:471-479
In this paper, we proposed an improved ray tracing method with an amelioration of visible tree structure, a visible face determination method, and non-uniform random test point method. In a proposed visible tree structure, it reduces tree nodes by me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91c273eb3c0668d1614823cc56167b8f
https://doi.org/10.5515/kjkiees.2009.20.5.471
https://doi.org/10.5515/kjkiees.2009.20.5.471
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 18:334-340
The prediction for vegetation attenuation using the RET model recommended in the ITU-R requires six RET input parameters. Among these, 4 parameters are related to the scattering characteristics of vegetation. To extract these parameters, two methods
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f73e35f7646d17421492edc09a40017e
https://doi.org/10.5515/kjkiees.2007.18.3.334
https://doi.org/10.5515/kjkiees.2007.18.3.334
Publikováno v:
2015 International Workshop on Antenna Technology (iWAT).
The 8×8 array applicator for 915 MHz hyperthermia proposed. Proposed array applicator is 8×8 lattice array with and without phased feeding. 8×8 lattice array with same phase is for superficial hyperthermia. 8×8 lattice array with phased feeding i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47cc98fc05390dae4d42118a7a4fe52c
https://doi.org/10.1109/iwat.2015.7365352
https://doi.org/10.1109/iwat.2015.7365352
Autor:
Dong-Ho Cha, Seok-Hee Bae
Publikováno v:
2014 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).
TVWS service is expected to be introduced in the near future. It should have to be capable of providing the broadcasting and TVWS services. However, it is difficult to share between broadcasting service and TVWS service in dense urban areas of the pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1e30a04890c4f72406ed8b8f22ece24
https://doi.org/10.1109/usnc-ursi.2014.6955618
https://doi.org/10.1109/usnc-ursi.2014.6955618
Autor:
Myung-Don Kim, Tae-Hong Kim, Won-Jeong Jeong, Seok-Hee Bae, Jeong-Ki Pack, Ji-Ho Yoo, Hyun Kyu Chung
Publikováno v:
2010 IEEE Antennas and Propagation Society International Symposium.
The use of high frequency band, broad band and MIMO antenna is expected in the next generation mobile communication system. By the rapid increase of demand for wireless communications and the explosive increase of the mobile communication services, r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::080713b4b96c8b5408df2d6755f988d7
https://doi.org/10.1109/aps.2010.5561720
https://doi.org/10.1109/aps.2010.5561720
Autor:
Won-Jeong Jeong, Ji-Ho Yoo, Tae-Hong Kim, Myung-Don Kim, Hyun Kyu Chung, Seok-Hee Bae, Jeong-Ki Pack
Publikováno v:
2010 IEEE Antennas & Propagation Society International Symposium (APSURSI); 2010, p1-4, 4p