Lira HAMADA


A Novel SAR-Probe Calibration Method Using a Waveguide Aperture in Tissue-Equivalent Liquid
Nozomu ISHII Lira HAMADA Soichi WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/10/01
Vol. E97-B  No. 10  pp. 2035-2041
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Measurement and Design Techniques on Antennas, Propagation and Wireless Systems)
Category: 
Keyword: 
specific absorption rate (SAR)probe calibrationtissue-equivalent liquidwaveguide aperture
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SAR-Probe Calibration System Using Reference Dipole Antenna in Tissue-Equivalent Liquid
Nozomu ISHII Yukihiro MIYOTA Ken-ichi SATO Lira HAMADA Soichi WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/01/01
Vol. E95-B  No. 1  pp. 60-68
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2010)
Category: Antenna Measurement
Keyword: 
specific absorption rate (SAR)probecalibrationtissue-equivalent liquidtwo-antenna methodgain
 Summary | Full Text:PDF(1.8MB)

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 SARTemperature elevationBody-worn devicesJapanese anatomical human modelsFDTD methodBio-heat equation
 Summary | Full Text:PDF(216.7KB)

Simultaneous Measurement of Antenna Gain and Complex Permittivity of Liquid in Near-Field Region Using Weighted Regression
Nozomu ISHII Hiroki SHIGA Naoto IKARASHI Ken-ichi SATO Lira HAMADA Soichi WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/06/01
Vol. E91-B  No. 6  pp. 1831-1837
Type of Manuscript:  Special Section PAPER (Special Section on 2007 International Symposium on Antennas and Propagation)
Category: Measurements
Keyword: 
SARnear-field regionabsolute gainFriis transmission equationleast square method
 Summary | Full Text:PDF(517.2KB)

A Method of Measuring Gain in Liquids Based on the Friis Transmission Formula in the Near-Field Region
Nozomu ISHII Takuhei AKAGAWA Ken-ichi SATO Lira HAMADA Soichi WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/09/01
Vol. E90-B  No. 9  pp. 2401-2407
Type of Manuscript:  Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation)
Category: Measurements
Keyword: 
Friis transmission formulaSAR probe calibrationconducting mediumFresnel approximationfar-field gain
 Summary | Full Text:PDF(484.1KB)

A New Feeding Technique for Temperature Distribution Control in Interstitial Microwave Hyperthermia
Lira HAMADA Hiroyuki YOSHIMURA Koichi ITO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1318-1323
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Measurements
Keyword: 
hyperthermiaincoherent/coherent power feedingcoaxial-slot antennabioheat transfer equation
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Basic Analysis on SAR Distribution of Coaxial-Slot Antenna Array for Interstitial Microwave Hyperthermia
Lira HAMADA Meng-Shien WU Koichi ITO Haruo KASAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/11/25
Vol. E78-C  No. 11  pp. 1624-1631
Type of Manuscript:  PAPER
Category: Microwave and Millimeter Wave Technology
Keyword: 
interstitial microwave hyperthermiacoaxial-slot antennaantenna arraymoment methodSAR distribution
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A New Muscle-Equivalent Phantom for SAR Estimation
Katsumi FURUYA Lira HAMADA Koichi ITO Haruo KASAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/06/25
Vol. E78-B  No. 6  pp. 871-873
Type of Manuscript:  Special Section LETTER (Special Issue on Medical Applications of Electromagnetic Techniques)
Category: 
Keyword: 
phantomUHFSARmuscle-equivalentthermographic method
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Effect of a Catheter on SAR Distribution around Interstitial Antenna for Microwave Hyperthermia
Meng-Shien WU Lira HAMADA Koichi ITO Haruo KASAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/06/25
Vol. E78-B  No. 6  pp. 845-850
Type of Manuscript:  Special Section PAPER (Special Issue on Medical Applications of Electromagnetic Techniques)
Category: 
Keyword: 
microwave interstitial hyperthermiacoaxial-slot antennamoment methodcurrent distribution
 Summary | Full Text:PDF(491.8KB)