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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 96  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2024-03-15
14:00
Fukui UNIVERSITY OF FUKUI
(Primary: On-site, Secondary: Online)
Eigenvalue Analysis of Radio Propagation Utilizing Hollow Cylindrical Concrete Structures in Sea Water
Nozomu Ishii, Naoki Kuzuu (Niigata Univ.), Masaharu Takahashi (Chiba Univ.), Qiaowei Yuan (Tohoku Inst. Tech.), Qiang Chen (Tohoku Univ.), Hiroshi Yoshida (JAMSTEC) AP2023-217
 [more] AP2023-217
pp.91-96
AP 2024-03-15
14:25
Fukui UNIVERSITY OF FUKUI
(Primary: On-site, Secondary: Online)
Distribution of Electromagnetic Fields of Radio Propagation Utilizing Hollow Cylindrical Concrete Structures in Sea Water
Qiaowei Yuan, Norihito Yamato (Tohoku Inst. Tech), Nozomu Ishii (Niigata Univ.), Masaharu Takahashi (Chiba Univ.), Qiang Chen (Tohoku Univ.), Hiroshi Yoshida (JAMSTEC) AP2023-218
 [more] AP2023-218
pp.97-101
AP 2024-03-15
15:00
Fukui UNIVERSITY OF FUKUI
(Primary: On-site, Secondary: Online)
Coaxial-Mode Analysis of Radio Propagation Utilizing Hollow Cylindrical Concrete Structures in Seawater
Jialu Wang, Qiang Chen (Tohoku Univ.), Nozomu Ishii (Niigata Univ.), Qiaowei Yuan (Tohoku Inst. Tech.), Masaharu Takahashi (Chiba Univ.) AP2023-219
Underwater radio communications leverage the coaxial structure formed by the hollow cylindrical concrete foundation of o... [more] AP2023-219
pp.102-104
AP 2024-03-15
15:25
Fukui UNIVERSITY OF FUKUI
(Primary: On-site, Secondary: Online)
Frequency Analysis of Radio Propagation Utilizing Hollow Cylindrical Concrete Structures in Sea Water
Kaito Ishikawa, Masaharu Takahashi (Chiba Univ.), Nozomu Ishii (Niigata Univ.), Qiaowei Yuan (Tohoku Inst. Tech.), Qiang Chen (Tohoku Univ.), Hiroshi Yoshida (JAMSTEC) AP2023-220
As one of the applications of electromagnetic waves in the ocean, we conducted a basic study of a system for communicati... [more] AP2023-220
pp.105-108
UWT
(2nd)
2024-01-29
14:40
Tokyo Tokai University Shinagawa Campus
(Primary: On-site, Secondary: Online)
Validation of an exteneded pseudo-scale model near the surface of the air-brackish water boundary by tank experiments
Hiroyasu Mimura, Nozomu Ishii (Niigata Univ.)
 [more]
AP, WPT
(Joint)
2024-01-19
14:50
Niigata Tokimate, Niigata University
(Primary: On-site, Secondary: Online)
[Invited Lecture] Application of a pseudo-scale model allowing for conductivity changes to the air-sea two-layer problem -- Field measurement in a simulated shallow water region at 200 MHz --
Makoto Goto, Nozomu Ishii (Niigata Univ.) AP2023-183
The authors have been investigating undersea positioning methods using electromagnetic waves to assist divers in rescue ... [more] AP2023-183
pp.122-125
AP 2023-09-01
13:00
Tokyo KOZO KEIKAKU ENGINEERING Inc.
(Primary: On-site, Secondary: Online)
Validation of a Pseudo-Scale Model by Evaluating Electromagnetic Fields Using the Sommerfeld Integral for the Air-Sea Two-Layer Problem
Nozomu Ishii, Takanobu Watanabe (Niigata Univ.) AP2023-76
In this report, the numerical convergence of the Sommerfeld integral (SI) is investigated by using Sommerfeld's identity... [more] AP2023-76
pp.55-60
UWT
(2nd)
2023-05-25
13:15
Shizuoka   Differences in Received Level Distribution by Scale Factor in a Pseudo-Scale Model Experimental System for the Air-Sea Two-Layer Problem
Makoto Goto, Taiga Wakabayashi, Nozomu Ishii (Niigata Univ.)
 [more]
AP
(2nd)
2022-12-08
15:05
Okinawa
(Primary: On-site, Secondary: Online)
Measurement Range Extension of Near-Field Gain of Dipole Antenna Operating in Pure Water at 6 GHz and Above
Keita Sekiya, Yuki Kato, Nozomu Ishii (Niigata Univ.), Yuto Shimizu, Tomoaki Nagaoka (NICT)
 [more]
RCS, AP, UWT
(Joint)
2022-11-15
17:05
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
Numerical Simulation of Pseudo-Scale Model of Air-Sea Problem with Tank Wall
Anri Kamiya, Nozomu Ishii (Niigata Univ.)
 [more]
WPT, UWT
(Joint)
2021-11-12
13:55
Online Online Modification of Pseudo-Scale Model Experiment System to Improve the Detection Accuracy of Underwater Position Estimation
Ryota Sase, Nozomu Ishii (Niigata Univ.)
 [more]
AP
(2nd)
2021-06-18
10:10
Online Online Estimation of near-field gain and liquid's electrical properties using dipole antennas operated in lossy liquid in the range of 2 GHz to 4 GHz
Keita Sekiya, Nozomu Ishii (Niigata Univ.), Yuto Shimizu, Tomoaki Nagaoka (NICT)
 [more]
UWT
(2nd)
2021-06-15
14:05
Online Online [Invited Lecture] Measurement of Transmission Characteristics between Two Electrical Small Antennas in Lossy Medium -- To Construct a Measurement System for a Pseudo Scale Model for Electromagnetic Fields in Underwater --
Nozomu Ishii (Niigata Univ.)
 [more]
EMCJ, MICT
(Joint)
2021-03-05
10:05
Online Online A Study of Uncertainty Evaluations for SAR Probe Calibration in Frequency Band of 5G Sub-6
Yuto Shimizu, Tomoaki Nagaoka, Nozomu Ishii, Kanako Wake, Soichi Watanabe (NICT) EMCJ2020-75
Nowadays, the fifth generation wireless mobile system (5G), which was released in 2020, mainly uses a frequency band fro... [more] EMCJ2020-75
pp.17-21
RCS, AP, UWT
(Joint)
2020-11-26
09:25
Online Online How does underwater antenna work in salty water by applying an electromagnetic field
Hiroshi Yoshida (JAMSTEC), Nozomu Ishii (Niigata Univ.), Masaharu Takahashi (Chiba Univ.), Qiang Chen (Tohoku Univ.) AP2020-83 RCS2020-122
 [more] AP2020-83 RCS2020-122
pp.56-59(AP), pp.71-74(RCS)
RCS, AP, UWT
(Joint)
2020-11-26
09:50
Online Online Acceleration of Numerical Integration of Electric Field Specialized for Shallow Sea Position Estimation
Nozomu Ishii (Niigata Univ.), Masaharu Takahashi (Chiba Univ.), Qiang Chen (Tohoku Univ.), Hiroshi Yoshida (JAMSTEC) AP2020-84 RCS2020-123
The authors have studied shallow a location system in the shallow sea using electromagnetic fields. In this case, it is ... [more] AP2020-84 RCS2020-123
pp.60-65(AP), pp.75-80(RCS)
RCS, AP, UWT
(Joint)
2020-11-26
10:15
Online Online Verification of Undersea Position Estimation Method Using Received Power Profile at Multiple Sea Surface Positions by Experimental Pseudo Scale Model
Ryota Sase, Nozomu Ishii (Niigata Univ.), Masaharu Takahashi (Chiba Univ.), Qiang Chen (Tohoku Univ.), Hiroshi Yoshida (JAMSTEC) AP2020-85 RCS2020-124
The authors have investigated an underwater position estimation system in shallow water that operates in the kHz band. I... [more] AP2020-85 RCS2020-124
pp.66-71(AP), pp.81-86(RCS)
AP
(2nd)
2020-08-24
14:00
Online Online A Consideration on Transmission Characteristics Between Transmitting and Receiving Antennas in Tissue Equivalent Liquid in the kHz Band Using a Long Tank
Riki Masuda, Nozomu Ishii (Niigata Univ.), Chakarothai Jerdvisanop, Yuto Shimizu, Kanako Wake, Soichi Watanabe (NICT)
 [more]
EMCJ 2020-07-02
13:25
Online Online An Analysis on Main Uncertainty Factors of System Validation and Probe Calibration for SAR Measurement
Yuto Shimizu (NICT), Nozomu Ishii (NICT/Niigata Univ.), Tomoaki Nagaoka, Kanako Wake, Soichi Watanabe (NICT) EMCJ2020-11
The specific absorption rate (SAR) is used for an assessment of a human exposure from wireless communication devices. Wi... [more] EMCJ2020-11
pp.1-5
EMCJ, IEE-EMC 2019-12-13
14:25
Aichi Chukyo University A design on a matching section of a waveguide for a SAR probe calibration
Yuto Shimizu (NICT), Nozomu Ishii (NICT/Niigata Univ.), Tomoaki Nagaoka, Kanako Wake, Soichi Watanabe (NICT) EMCJ2019-77
In a compliance test of wireless communication devices, a head or a flat phantom filled with a human tissue equivalent l... [more] EMCJ2019-77
pp.13-18
 Results 1 - 20 of 96  /  [Next]  
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