Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Katsumi Fujii"'
Publikováno v:
IEEE Access, Vol 12, Pp 17090-17101 (2024)
Fifth generation (5G) mobile communication systems have been deployed in the millimeter wave (mmWave) band. Since electromagnetic (EM) waves in this band exhibit high propagation loss and antennas are highly directive, the performance of wireless com
Externí odkaz:
https://doaj.org/article/8d9eb29aac7d4910b813aa76cabb4c42
Publikováno v:
Frontiers in Public Health, Vol 9 (2021)
In this paper, human exposures to ultra-wideband (UWB) electromagnetic (EM) pulses in the microwave region are assessed using a frequency-dependent FDTD scheme previously proposed by the authors. Complex permittivity functions of all biological tissu
Externí odkaz:
https://doaj.org/article/25d00b49e18c44fba6aa7abd4a5acb0e
Autor:
Katsumi Fujii
Publikováno v:
IEICE Communications Express. 11:721-726
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::147cb5eb3f7ad7d0f32710f9ccc0c8e4
https://doi.org/10.1587/comex.2022xbl0127
https://doi.org/10.1587/comex.2022xbl0127
Autor:
Katsumi Fujii
Publikováno v:
IEICE Communications Express. 11:643-648
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2451232126df35e851431978c70d906b
https://doi.org/10.1587/comex.2022xbl0102
https://doi.org/10.1587/comex.2022xbl0102
Publikováno v:
IEICE Transactions on Communications. :694-706
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8df20d5b0cc88bcf2e6f82ef085d2458
https://doi.org/10.1587/transcom.2021isi0003
https://doi.org/10.1587/transcom.2021isi0003
Autor:
Hirokazu Sawada, Takeshi Matsumura, Keizo Inagaki, Atsushi Kanno, Katsumi Fujii, Jerdvisanop Chakarothai, Norihiko Sekine, Akifumi Kasamatsu, Hiroyo Ogawa
Publikováno v:
2023 17th European Conference on Antennas and Propagation (EuCAP).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3d12972e4cb7eaf03e73945a936c9b7
https://doi.org/10.23919/eucap57121.2023.10133616
https://doi.org/10.23919/eucap57121.2023.10133616
Publikováno v:
IEICE Communications Express. 11:58-63
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da0fe07616663b0fc1d804e1bac17d5f
https://doi.org/10.1587/comex.2021xbl0187
https://doi.org/10.1587/comex.2021xbl0187
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 70:1-9
This study aimed to calibrate power meters in the frequency range of 140–220 GHz (WR-05 band). To this end, a WR-05-waveguide calorimeter is designed as a reference standard. The calorimeter is based on the dc-substitution method in which the absor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fc76bc89abef776afadd13326f044c5
https://doi.org/10.1109/tim.2020.3036083
https://doi.org/10.1109/tim.2020.3036083
Publikováno v:
IEICE Communications Express. 9:282-287
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d97294f08ef5d631848ce85e38df9cc
https://doi.org/10.1587/comex.2020xbl0028
https://doi.org/10.1587/comex.2020xbl0028
Publikováno v:
2021 IEEE International Joint EMC/SI/PI and EMC Europe Symposium.
Recently, 5G wireless communications system has been deployed in 28 GHz band. Due to high propagation loss of EM waves, there are few paths which can reach receiving antenna when a blockage exists. In order to increase number of propagation paths and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18f1ba1c589d896a9972f7157171b605
https://doi.org/10.1109/emc/si/pi/emceurope52599.2021.9559256
https://doi.org/10.1109/emc/si/pi/emceurope52599.2021.9559256