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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 51  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCC, WBS, SAT, MICT 2022-05-25
14:55
Online Online Design of electromagnetic scattering wall for improvement of wireless communications quality at 28 GHz
Yasutaka Murakami (UEC), Jerdvisanop Chakarothai, Lira Hamada, Katsumi Fujii (NICT) WBS2022-5 RCC2022-5 SAT2022-5 MICT2022-5
5G wireless communications use electromagnetic (EM) waves in 28 GHz band. In this frequency band, high-directivity (gain... [more] WBS2022-5 RCC2022-5 SAT2022-5 MICT2022-5
pp.18-21
RCS, SR, SRW
(Joint)
2022-03-03
09:55
Online Online A Consideration of Indoor Propagation Models in the 232-330 GHz Band
Hirokazu Sawada, Takeshi Matsumura, Keizo Inagaki, Atsushi Kanno, Katsumi Fujii, Jerdvisanop Chakarothai, Norihiko Sekine, Akifumi Kasamatsu, Hiroyo Ogawa (NICT) SRW2021-72
 [more] SRW2021-72
pp.17-20
PEM
(Workshop)
2021-11-29
- 2021-11-30
Hokkaido Hokkaido Univ. (Hybrid by remote)
(Primary: On-site, Secondary: Online)
Uncertainty Evaluation of Optical Electric-Field Probe Calibration for Human Exposure Assessment at 85 kHz
Yuto Shimizu (NICT), Eishi Oho (NICT/TUAT), Jerdvisanop Chakarothai, Tomoaki Nagaoka (NICT), Takuji Arima, Toru Uno (TUAT)
The electromagnetic field in the intermediate frequency band (300 Hz–10 MHz) emitted from wireless power transfer (WPT) ... [more]
EMCJ 2021-07-01
13:05
Online Online An Investigation on Effect of Anisotropy of FR-4 Substrates to Signal Transmission Using FDTD Analysis
Taiki Kitazawa (NAIST), Taiki Yamagiwa, Ren Kitahara (UEC), Jerdvisanop Chakarothai (NICT), Takashi Kasuga (NIT, Nagano College), Yuichi Hayashi (NAIST) EMCJ2021-17
Recently, FR-4 substrates are widely used in PCB. FR-4 substrates are composed of glass fiber and epoxy resin, and there... [more] EMCJ2021-17
pp.1-6
EMT, IEE-EMT 2021-05-21
11:15
Online Online A Comparison on the Numerical Accuracy of the Reflection Coefficients in the Three Types of Frequency-Dependent FDTD Schemes
Atsushi Sugimoto, Yukihisa Suzuki (Tokyo Metropolitan Univ.), Jun Shibayama (Hosei Univ.), Jerdvisanop Chakarothai (NICT) EMT2021-3
The reflection at the interface between air and gold whose dielectric properties are expressed by the Drude-Lorentz mode... [more] EMT2021-3
pp.13-18
EMCJ, IEE-EMC, IEE-SPC 2020-12-11
09:30
Online Online EMI Measurements below 30MHz using a Loop Antenna -- Effect on Location of Feeding Gap of Loop Antenna --
Jun Chikayama (TUAT), Jerdvisanop Chakarothai, Katsumi Fujii, Kanako Wake (NICT), Takuji Arima, Toru Uno (TUAT) EMCJ2020-56
Recently, equipment including wireless power transfer system using electromagnetic (EM) waves below 30 MHz have been dev... [more] EMCJ2020-56
pp.7-12
MW, EST, EMCJ, PEM, IEE-EMC [detail] 2020-10-22
10:35
Online Online Investigation on Measurement Method of Radiated Electromagnetic Disturbance from EUTs Unable to Measure on Conventional Test Site
Jerdvisanop Chakarothai, Katsumi Fujii, Yukio Yamanaka (NICT), Kimihiro Tajima (NTT-AT), Nobuyuki Mitsuzuka (TELEC) EMCJ2020-27 MW2020-41 EST2020-29
 [more] EMCJ2020-27 MW2020-41 EST2020-29
pp.14-19
MW, EST, EMCJ, PEM, IEE-EMC [detail] 2020-10-22
15:50
Online Online A Study on a Calibration Method for an Optical Electric-Field Probe in a Liquid Phantom Using a Sheathed Dipole Antenna at 85 kHz-Band
Eishi Oho (TUAT/NICT), Yuto Shimizu, Jerdvisanop Chakarothai, Kanako Wake (NICT), Takuji Arima, Toru Uno (TUAT)
 [more]
MW, EST, EMCJ, PEM, IEE-EMC [detail] 2020-10-23
13:15
Online Online Basic Study on Signal Transmission Analysis of FR-4 Using FDTD Method Implemented Frequency Dispersion
Taiki Kitazawa (NIT,Nagano College), Taiki Yamagiwa, Ren Kitahara (UEC), Jerdvisanop Chakarothai (NICT), Takashi Kasuga (NIT,Nagano College) EMCJ2020-44 MW2020-58 EST2020-46
Since the permittivity of FR-4 substrate has a frequency dispersion property, transmission characteristics change signif... [more] EMCJ2020-44 MW2020-58 EST2020-46
pp.109-114
EMCJ, EMD, WPT
(Joint) [detail]
2020-07-03
13:05
Online Online Circuit Modeling of Wireless Power Transfer System Considering Scattering from Perfect Conductor
Nozomi Haga (Gunma Univ.), Jerdvisanop Chakarothai (NICT), Keisuke Konno (Tohoku Univ.) WPT2020-15
The impedance expansion method (IEM) is a circuit-modeling technique for electrically small devices based on the method ... [more] WPT2020-15
pp.1-6
EMCJ 2020-07-02
14:15
Online Online Design of an electromagnetic scattering wall applying array antenna theory -- Reduction of the thickness with metamaterial structures --
Yasutaka Murakami, Jerdvisanop Chakarothai, Katsumi Fujii (NICT) EMCJ2020-13
5G wireless communications use electromagnetic (EM) waves in 28 GHz band. High-directivity(gain) antennas are actually u... [more] EMCJ2020-13
pp.13-17
PEM
(Workshop)
2019-11-18
- 2019-11-19
Mie Sinfonia Technology Hibiki Hall Ise (Ise Tourism and Culture Hall) Calibration of an Optical Electric-Field Probe at Frequencies Below 30 MHz Using a Shortened Monopole Antenna
Jerdvisanop Chakarothai, Katsumi Fujii, Kanako Wake, Soichi Watanabe (NICT)
There is an increasing use of devices using electromagnetic fields at intermediate frequencies (300 Hz – 10 MHz) s... [more]
EMCJ, IEE-SPC
(Joint)
2019-11-15
15:00
Tokyo Kikai-Shinko-Kaikan Bldg. Design of an electromagnetic scattering wall applying array antenna theory -- Optimization for location of a transmitting antenna --
Yasutaka Murakami, Jerdvisanop Chakarothai, Katsumi Fujii (NICT) EMCJ2019-71
5G wireless communications use electromagnetic (EM) waves in 28 GHz band. High-directivity(gain) antennas are actually u... [more] EMCJ2019-71
pp.1-6
EMCJ, EMD, WPT, PEM
(Joint) [detail]
2019-07-19
11:50
Tokyo Kikai-Shinko-Kaikan Bldg. Calibration of Optical Electric-Field Probe in Liquid Phantom Using Sheathed Dipole Antenna
Jerdvisanop Chakarothai (NICT), Nozomu Ishii (Niigata Univ.), Kanako Wake, Katsumi Fujii, Soichi Watanabe (NICT)
In order to check compliance for MHz-band wireless power transfer systems, we have proposed a calibration method for ele... [more]
AP, SANE, SAT
(Joint)
2019-07-17
10:00
Miyagi Tohoku Univ. Design of Broadband On-Body Antenna Using Ultra-Wideband FDTD Method
Jerdvisanop Chakarothai (NICT) AP2019-21
In this paper, broadband antennas close to a human body are designed using an improved FDTD method which can take into a... [more] AP2019-21
pp.1-6
AP
(2nd)
2019-06-25
15:00
Hokkaido Wakkanai City Japan-Russia Friendship Hall Effect of Unbalanced Current on Transmission Measurements between Two Dipole Antennas in the Saline Solution
Nozomu Ishii (Niigata Univ.), Yuto Shimizu, Jerdvisanop Chakarothai, Kanako Wake, Soichi Watanabe (NICT)
 [more]
AP
(2nd)
2019-03-14
11:35
Fukushima Yunoya (Iizaka Onsen, Fukushima) Some considerations on transmission measurements between two dipole antennas in the tissue-equivalent salt water in kHz and MHz bands
Nozomu Ishii, Daiki Obara (Niigata Univ.), Jerdvisanop Chakarothai, Kanako Wake, Soichi Watanabe (NICT)
 [more]
WPT, PEM
(Joint)
2018-11-19
11:05
Tokyo Kikai-Shinko-Kaikan Bldg. Investigation of Calibration Method for Optoelectric Electric Field Probe by Standard Electric Field Method Using Shortened Monopole Antenna
Jerdvisanop Chakarothai, Katsumi Fujii, Kanako Wake, Ifong Wu, Soichi Watanabe (NICT)
 [more]
EST, MW, EMCJ, IEE-EMC [detail] 2018-10-18
10:20
Aomori Hachinohe Chamber of Commerce and Industry(Hachinohe city, Aomori) Assessment of Human Exposure by Ultra-Wideband Electromagnetic Pulses
Jerdvisanop Chakarothai, Kanako Wake, Soichi Watanabe (NICT) EMCJ2018-34 MW2018-70 EST2018-56
In this paper, assessment of human exposures by ultra-wideband (UWB) electromagnetic (EM) pulses is performed via a nove... [more] EMCJ2018-34 MW2018-70 EST2018-56
pp.1-6
EE, WPT, IEE-SPC 2018-07-03
10:45
Hokkaido Hokkaido University Evaluation of Contact Current for Wireless Power Transfer System in 100 kHz-band using Measured Electric Field
Keisuke Arai (TUAT), Jerdvisanop Chakarothai, Kanako Wake, Fujii Katsumi, Soichi Watanabe (NICT), Takuji Arima, Toru Uno (TUAT) WPT2018-22
Since wireless power transfer (WPT) systems for electric vehicles (EV) may generate relatively strong electromagnetic (E... [more] WPT2018-22
pp.67-71
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