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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EMCJ | 2025-01-23 13:50 |
Kochi | Kochijo Holl | Simplified Smartphone Model for Electromagnetic Exposure Evaluation Based on Measured SAR Values Erina Kawai (NICT/Chiba Univ.), Kazuyuki Saito (Chiba Univ./NICT), Masaharu Takahashi (Chiba Univ.), Tomoaki Nagaoka (NICT) |
[more] | |
| UWT (2nd) |
2024-11-19 16:25 |
Kagoshima | Measurement of low-frequency EM wave propagation characteristics in three-layer structure of sea, sea ice and air in Arctic region Shinnosuke Sakaya (Chiba Univ.), Hiroshi Yoshida, Makoto Sugesawa (JAMSTEC), Masaharu Takahashi (Chiba Univ.) |
In recent years, various applications of EM waves in seawater have been investigated, and the authors have also investig... [more] | ||
| AP | 2024-10-17 10:00 |
Fukuoka | ACROS Fukuoka (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Improved receiving antenna configuration in undersea position estimation system Shinnosuke Sakaya, Masaharu Takahashi (Chiba Univ.)  AP2024-61 |
Water-related accidents are occurring all over the world. In Japan, water accidents occur approximately 1,400 per year. ... [more] | AP2024-61 pp.30-31 |
| AP | 2024-10-17 12:50 |
Fukuoka | ACROS Fukuoka (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Experimental Estimation of Phase and Attenuation Constants for Transmission between Dipole Antennas in Proximity to Vinyl Chloride Tubes in Simulated Submarine Salt Water Naoki Kuzu, Nozomu Ishii (Niigata Univ.), Masaharu Takahashi (Chiba Univ.), Qiaowei Yuan (Tohoku Institute of Tech.), Qiang Chen (Tohoku Univ.), Hiroshi Yoshida (JAMSTEC) AP2024-96 |
The authors have been studying the feasibility of building an undersea electromagnetic wave communication system for mai... [more] | AP2024-96 pp.107-112 |
| AP | 2024-10-17 12:50 |
Fukuoka | ACROS Fukuoka (Primary: On-site, Secondary: Online) |
[Poster Presentation]
STUDY of UNDERSEA DRONE-MOUNTED ANTENNAS and PROPAGATION for MAINTENANCE and INSPECTION of WIND POWER GENERATION FACILITIES Sota Mutsuna, Hiroyasu Sato, Qiang Chen (Tohoku Univ.), Nozomu Ishii (Niigata Univ.), Masaharu Takahashi (Chiba Univ.), Qiaowei Yuan (Tohoku Inst. Tech.), Hiroshi Yoshida (JAMSTEC) AP2024-109 |
We propose a drone-mounted antenna that is excited by a low-loss transmission line made of cylindrical concrete, which i... [more] | AP2024-109 p.146 |
| SIS, ITE-BCT | 2024-10-04 13:00 |
Hokkaido | Hokusei Gakuen Univ. (Primary: On-site, Secondary: Online) |
Simplified numerical smartphone model for evaluating electromagnetic radiation exposure
-- Application to SAR calculations by use of numerical human body models -- Erina Kawai, Kazuyuki Saito (NICT/Chiba Univ.), Masaharu Takahashi (Chiba Univ.), Tomoaki Nagaoka (NICT) |
With the recent spread of wireless communication devices such as smartphones, it is important to evaluate electromagneti... [more] | |
| AP (2nd) |
2024-08-05 13:30 |
Tokyo | Chichijima | Measurements for electromagnetic communications in underwater Masaharu Takahashi (Chiba Univ.) |
Experiments have been carried out in various environments for undersea communication using electromagnetic waves. The fo... [more] | |
| 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 |
This paper reports the results of an eigenmode analysis of radio propagation using a hollow cylindrical concrete structu... [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 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 |
| AP | 2023-10-19 10:00 |
Iwate | Iwate University (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Basic Study of Undersea Position Estimation System Using Single Receiver Shinnosuke Sakaya, Masaharu Takahashi (Chiba Univ.) AP2023-97 |
Water-related accidents are occurring all over the world. In Japan, water accidents occur approximately 1,400 per year. ... [more] | AP2023-97 pp.43-44 |
| AP, MW (Joint) |
2022-09-16 11:00 |
Ehime | The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
Examination of the detection range of pressure ulcers by microwave Hizuru Ogawa, Yusuke Asano, Masaharu Takahashi (Chiba Univ) AP2022-86 |
[more] | AP2022-86 pp.86-89 |
| AP, SANE, SAT (Joint) |
2022-07-29 10:50 |
Hokkaido | Asahikawa Taisetsu Crystal Hall (Primary: On-site, Secondary: Online) |
Development of a noncontact bedsore detection system
-- Size detection using wavelet transforms -- Yusuke Asano, Masaharu Takahashi (Chiba Univ.) AP2022-56 |
Bedsores are injuries caused by pressure on the skin for a long time and stagnation of blood flow. The more the damage c... [more] | AP2022-56 pp.125-128 |
| UWT (2nd) |
2022-03-01 13:05 |
Online | Online | Underwater antennas and an application for under-the-ice robots Hiroshi Yoshida (JAMSTEC), Takashi Noisshiki (JRC), Masaharu Takahashi, Ren Yabiku (Chiba Univ.), Ryotaro Suga (NICT), Tatsurou Yonekura, Shunya Tadano (Iwate Univ.) |
[more] | |
| AP | 2022-02-17 10:50 |
Online | Online | [Invited Lecture]
Radio Wave Propagation Characteristics of Millimeter-wave in Railway Environment Kazuki Nakamura, Nagateru Iwasawa, Koki Iwamoto, Yusuke Kawamura, Daisuke Yamaguchi, Takayasu Kitano, Kunihiro Kawasaki (RTRI), Shotaro Yoshida (JRSEC), Masaharu Takahashi (Chiba Univ.) AP2021-161 |
In railways, wireless communication systems are used to communicate between running trains and the ground. Therefore, it... [more] | AP2021-161 pp.16-19 |
| AP | 2022-02-18 10:25 |
Online | Online | [Invited Lecture]
Various decoupling methods between MIMO antennas Part 2. Hiroshi Sato, Yoshio Koyanagi (Panasonic), Masaharu Takahashi (Chiba university), Hisashi Morishita (National Defense Academy) AP2021-169 |
In order to realize large-capacity wireless communication, it is common to install MIMO technology in a small terminal. ... [more] | AP2021-169 pp.61-66 |
| UWT (2nd) |
2021-06-15 15:35 |
Online | Online | Basic Study of Machine Learning for Underwater Location Estimation System Using Electromagnetic Waves Shinnosuke Sakaya, Masaharu Takahashi (Chiba Univ.) |
Water-related accidents are occurring all over the world. In Japan, water accidents occur approximately 1,300 per year. ... [more] | |
| 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) |
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