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IEICE Trans

Akimasa HIRATA

Averaging Area of Incident Power Density for Human Exposure from Patch Antenna Arrays
Daisuke FUNAHASHI Takahiro ITO Akimasa HIRATA Takahiro IYAMA Teruo ONISHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2018/08/01
Vol. E101-C  No. 8  pp. 644-646
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
5th generation wireless system, patch antenna array, safety standards, incident power density, RF exposure, 
 Summary | Full Text:PDF
Magnetic Field Measurement for Human Exposure Assessment near Wireless Power Transfer Systems in Kilohertz and Megahertz Bands
Satoshi ISHIHARA Teruo ONISHI Akimasa HIRATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/12/01
Vol. E98-B  No. 12  pp. 2470-2476
Type of Manuscript:  PAPER
Category: Electromagnetic Compatibility(EMC)
Keyword: 
wireless power transfer (WPT), information household appliance, measurement method, near field magnetic field, human exposure, 
 Summary | Full Text:PDF
Quasistatic Approximation for Exposure Assessment of Wireless Power Transfer
Ilkka LAAKSO Takuya SHIMAMOTO Akimasa HIRATA Mauro FELIZIANI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/07/01
Vol. E98-B  No. 7  pp. 1156-1163
Type of Manuscript:  INVITED PAPER (Special Section on Electromagnetic Compatibility Technology in Conjunction with Main Topics of EMC'14/Tokyo)
Category: 
Keyword: 
wireless power transfer, human exposure, dosimetry, 
 Summary | Full Text:PDF
Evaluation of SAR and Temperature Elevation Using Japanese Anatomical Human Models for Body-Worn Devices
Teruo ONISHI Takahiro IYAMA Lira HAMADA Soichi WATANABE Akimasa HIRATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/12/01
Vol. E93-B  No. 12  pp. 3643-3646
Type of Manuscript:  LETTER
Category: Electromagnetic Compatibility(EMC)
Keyword: 
10 g average SAR, Temperature elevation, Body-worn devices, Japanese anatomical human models, FDTD method, Bio-heat equation, 
 Summary | Full Text:PDF
Quasi-Static FDTD Method for Dosimetry in Human due to Contact Current
Akimasa HIRATA Yukinori TAKANO Toshihiro NAGAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/01/01
Vol. E93-C  No. 1  pp. 60-65
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: 
Keyword: 
quasi-static finite-difference time-domain method, contact current, dosimetry, 
 Summary | Full Text:PDF
Nonlinear Analysis of DBR Chrenkov Laser via Particle Simulation
Akimasa HIRATA Toshiyuki SHIOZAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/12/25
Vol. E83-C  No. 12  pp. 1917-1922
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
Cherenkov laser, particle simulation, FDTD method, distributed Bragg reflector, 
 Summary | Full Text:PDF
Calculation of Temperature Rises in the Human Eye Exposed to EM Waves in the ISM Frequency Bands
Akimasa HIRATA Gou USHIO Toshiyuki SHIOZAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/03/25
Vol. E83-B  No. 3  pp. 541-548
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Progress in Electromagnetic Compatibility Technology)
Category: EMC Simulation
Keyword: 
FDTD method, human eye, ISM frequency bands, specific absorption rate (SAR), temperature rise, 
 Summary | Full Text:PDF
A Compact Smith-Purcell Free-Electron Laser with a Bragg Cavity
Tipyada THUMVONGSKUL Akimasa HIRATA Toshiyuki SHIOZAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/11/25
Vol. E82-C  No. 11  pp. 2094-2100
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
Bragg cavity, compact lasers, high-power lasers, metallic gratings, Smith-Purcell FEL, 
 Summary | Full Text:PDF
Efficiency Enhancement in a Rectangular Cherenkov Laser by a Proper Variation of Dielectric Permittivity in the Transverse Direction
Sirou HIROSAKA Akimasa HIRATA Toshiyuki SHIOZAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/11/25
Vol. E82-C  No. 11  pp. 2108-2109
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
Cherenkov laser, transverse permittivity variation, efficiency enhancement, particle simulation, 
 Summary | Full Text:PDF
Efficiency Enhancement in a Cherenkov Laser by a Proper Variation of Dielectric Thickness
Akimasa HIRATA Yoshio YUSE Toshiyuki SHIOZAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/11/25
Vol. E81-C  No. 11  pp. 1764-1765
Type of Manuscript:  LETTER
Category: Opto-Electronics
Keyword: 
Cherenkov laser, dielectric thickness variation, efficiency enhancement, particle simulation, 
 Summary | Full Text:PDF