Osamu HASHIMOTO


Winding Ratio Design of Transformer in Equivalent Circuit of Circular Patch Array Absorber
Ryosuke SUGA Tomohiko NAKAMURA Daisuke KITAHARA Kiyomichi ARAKI Osamu HASHIMOTO 
Publication:   
Publication Date: 2018/08/01
Vol. E101-C  No. 8  pp. 651-654
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
patch array absorberwinding ratioequivalent circuittransformer
 Summary | Full Text:PDF(537.8KB)

Study on RCS Reduction of Patch Array Using Switchable Absorption/Transmission Surface
Shinya KITAGAWA Ryosuke SUGA Osamu HASHIMOTO Kiyomichi ARAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/07/01
Vol. E99-C  No. 7  pp. 805-808
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
RCSradar absorbertransmission surfaceradome
 Summary | Full Text:PDF(639.1KB)

Dual-Polarization RCS Reduction of X-Band Antenna Using Switchable Reflector
Shinya KITAGAWA Ryosuke SUGA Kiyomichi ARAKI Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/07/01
Vol. E98-C  No. 7  pp. 701-708
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Microwaves, Millimeter-Waves
Keyword: 
radar cross sectionradar absorberantennareflectorpolarization
 Summary | Full Text:PDF(1.3MB)

A Switchable Microwave Reflector Using Pin Diodes
Shinya KITAGAWA Ryosuke SUGA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/07/01
Vol. E97-C  No. 7  pp. 683-688
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Simulation Techniques and Their Applications for Electronics)
Category: 
Keyword: 
switchablereflectorradar absorberpin diode
 Summary | Full Text:PDF(1MB)

Mutual Coupling Reduction between Closely-Placed MSAs for Bi-Static Radar Using Wave Absorber
Takenori YASUZUMI Koudai TAKAHASHI Naoki SANO Ryosuke SUGA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/01/01
Vol. E96-C  No. 1  pp. 77-83
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
microstrip antenna (MSA)mutual couplingradiation patternwave absorber
 Summary | Full Text:PDF(2MB)

Multi-Layered Translucent Wave Absorber Using Carbon Fibers and Applying to Portable Anechoic Chamber
Takenori YASUZUMI Shunki KATO Yuya ISHII Ryosuke SUGA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/12/01
Vol. E95-B  No. 12  pp. 3830-3836
Type of Manuscript:  PAPER
Category: Electromagnetic Compatibility(EMC)
Keyword: 
wave absorbercarbon fiberanechoic chamberwideband absorption characteristics
 Summary | Full Text:PDF(2.1MB)

Miniaturization of Parallel-Plate Lens Antenna for Evaluation of Wave Absorber Placed on Ceiling of ETC Gate
Takenori YASUZUMI Nayuta KAMIYA Ryosuke SUGA Osamu HASHIMOTO Yukinori MATSUSHITA Yasuyuki MATSUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/10/01
Vol. E95-B  No. 10  pp. 3225-3231
Type of Manuscript:  PAPER
Category: Electromagnetic Compatibility(EMC)
Keyword: 
parallel-plate lensgeometrical optics (GO)diffractionhalf power beam width (HPBW)wave absorberelectronic toll collection (ETC)
 Summary | Full Text:PDF(4.3MB)

Shape Measurement of Canned Food to Verify Hermetic Sealing
Ryosuke SUGA Shigenori TAKANO Takenori YASUZUMI Taichi IJUIN Tetsuya TAKATOMI Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/10/01
Vol. E95-C  No. 10  pp. 1662-1665
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
shape measurementcanned foodcollimated lenshermetic sealing
 Summary | Full Text:PDF(1MB)

Design of a New Low-Pass Filter in the Hairpin Structure with a Chip-Capacitor
Takenori YASUZUMI Masayoshi KAMADA Tomoki UWANO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/02/01
Vol. E95-C  No. 2  pp. 284-289
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
low-pass filterhairpin structureattenuation poleChebyshev response
 Summary | Full Text:PDF(957KB)

Novel Compact High-Pass Filter with Sharp Attenuation Slope Using Cross-Coupling in the Multi-Layer Structure
Takenori YASUZUMI Tomoki UWANO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/02/01
Vol. E95-C  No. 2  pp. 313-316
Type of Manuscript:  BRIEF PAPER
Category: Electronic Circuits
Keyword: 
high-pass filter (HPF)quasi-lumped elementsattenuation polecross-coupling
 Summary | Full Text:PDF(555KB)

Ultra-Wideband Bandpass Filter with Sharp Attenuation Slope Using Inter-Digital Finger Resonator and Parallel-Coupled Lines
Takenori YASUZUMI Yusuke OMOTE Tomoki UWANO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/02/01
Vol. E95-C  No. 2  pp. 268-274
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
bandpass filter (BPF)ultra-wideband (UWB)inter-digital finger resonatorparallel-coupled linesmicrostrip line (MSL)
 Summary | Full Text:PDF(1.4MB)

A Study on Compact Wide Bandpass Filter Using Inter-Digital Resonator
Jumpei YAMAMOTO Takenori YASUZUMI Tomoki UWANO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/07/01
Vol. E93-C  No. 7  pp. 1132-1134
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
wideband bandpass filterinterdigital resonatormicrostrip lineparallel coupled line
 Summary | Full Text:PDF(1.6MB)

A Study and Design of LPF Using Hairpin Structural Circuit and Chip Capacitor
Shohei HASEGAWA Takenori YASUZUMI Tomoki UWANO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/07/01
Vol. E93-C  No. 7  pp. 1135-1137
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
low-pass filterscoupled lineattenuation polechip capacitor
 Summary | Full Text:PDF(356.9KB)

Study on the Temperature Limitation of the Injecting Power to a Pyramidal EM-Wave Absorber
Tetsuhiro SASAGAWA Shinya WATANABE Osamu HASHIMOTO Toshifumi SAITO Hiroshi KURIHARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/10/01
Vol. E92-C  No. 10  pp. 1319-1321
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
FDTD methodSIMPLE methodMonte Carlo method and READ methodpyramidal EM-wave absorbertemperature limitation
 Summary | Full Text:PDF(810.6KB)

Computer Simulation about Temperature Distribution of an EM-Wave Absorber Using a Coupled Analysis Method
Shinya WATANABE Akitoshi TANIGUCHI Kota SAITO Osamu HASHIMOTO Toshifumi SAITO Hiroshi KURIHARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/04/01
Vol. E91-C  No. 4  pp. 638-646
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
FDTD methodSIMPLE methodMonte Carlo method and READ method
 Summary | Full Text:PDF(827.5KB)

Wave Absorber with Fine Weatherability for Improving ETC Environment
Yu MIURA  Kouta MATSUMOTO  Osamu OKADA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/03/01
Vol. E91-C  No. 3  pp. 385-388
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
wave absorberETCEPDMweatherability
 Summary | Full Text:PDF(200.2KB)

Wave Absorber by Using Cylindrical Bars with Magnetic Loss Covers Arranged Metallic Mesh for Improving ETC Environment
Kouta MATSUMOTO Atsushi KITAMOTO Takuya NAKAMURA Takahiro AOYAGI Osamu HASHIMOTO Takashi MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/02/01
Vol. E91-C  No. 2  pp. 220-223
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
wave absorbercylindrical barsmetallic meshETC lane
 Summary | Full Text:PDF(384.1KB)

FOREWORD
Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/12/01
Vol. E90-C  No. 12  pp. 2169-2169
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(62.1KB)

An Ultra-Wideband (UWB) Bandpass Filter Using Broadside-Coupled Structure and Lumped-Capacitor-Loaded Shunt Stub Resonators
Keren LI Yasuhisa YAMAMOTO Daisuke KURITA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/09/01
Vol. E90-C  No. 9  pp. 1736-1742
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Passive Devices/Circuits
Keyword: 
UWBbandpass filterbroadside-coupledshunt stubattenuation polechip capacitor
 Summary | Full Text:PDF(889.7KB)

The Measurements of the Complex Permittivities of Blood Samples in Quasi-Millimeter and Millimeter Wave Bands
Hiroki WAKATSUCHI Masahiro HANAZAWA Soichi WATANABE Atsuhiro NISHIKATA Masaki KOUZAI Masami KOJIMA Yoko YAMASHIRO Kazuyuki SASAKI Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/06/01
Vol. E90-B  No. 6  pp. 1357-1359
Type of Manuscript:  Special Section LETTER (Special Section on 2nd Pan-Pacific EMC Joint Meeting--PPEMC'06--)
Category: 
Keyword: 
whole bloodblood plasmacomplex permittivitiestemperature dependencemillimeter wavesquasi millimeter wavescoaxial probe method
 Summary | Full Text:PDF(263.8KB)

Wave Absorber Formed by Arranging Cylindrical Bars at Intervals for Installing between ETC Lanes
Kouta MATSUMOTO Takeru OZAWA Takuya NAKAMURA Takahiro AOYAGI Osamu HASHIMOTO Takashi MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/11/01
Vol. E89-C  No. 11  pp. 1700-1703
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
wave absorbercylindrical barsETCFI method
 Summary | Full Text:PDF(368.9KB)

Magnetic Field and Dosimetric Study at Intermediate Frequency Range Using the Coil Source Model
Shinichiro NISHIZAWA Friedrich LANDSTORFER Kouta MATSUMOTO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/04/01
Vol. E89-C  No. 4  pp. 524-530
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
coil modelequivalent source modelintermediate frequencymagnetic fieldEN50366 (CENELEC)induction heater (IH)
 Summary | Full Text:PDF(1.8MB)

FOREWORD
Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/01/01
Vol. E89-C  No. 1  pp. 1-1
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(43.4KB)

Free Space Measurement Method with Parallel Electromagnetic Wave Beam by Using Dielectric Lenses and Horn Antennas for Reflectivity of Electromagnetic Absorbers in Millimeter Waves
Hirosuke SUZUKI Atsuhiro NISHIKATA Yutaka HIGASHIDA Tetsu SOH Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/01/01
Vol. E89-C  No. 1  pp. 24-29
Type of Manuscript:  Special Section PAPER (Special Section on Near-Field and Far-Field Electromagnetic Absorption and Shielding and Related Technologies)
Category: 
Keyword: 
millimeter wave technologyreflectivitylens antennasparallel beamelectromagnetic absorbersfar field
 Summary | Full Text:PDF(465KB)

Analysis of EM Environment for DSRC System on Express Highway with Wave Absorbers on Sidewalls and Pavement
Ramesh K. POKHAREL Osamu HASHIMOTO Makoto TOYOTA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/01/01
Vol. E89-C  No. 1  pp. 61-68
Type of Manuscript:  Special Section PAPER (Special Section on Near-Field and Far-Field Electromagnetic Absorption and Shielding and Related Technologies)
Category: 
Keyword: 
communication rangeDSRC systemEM environmentEM wave absorberray-tracing method
 Summary | Full Text:PDF(1MB)

Non-destructive Dielectric Measurement of Solid Lossy Dielectric Material Using Open-Ended Waveguide Infilled with Low-Loss Dielectric Material
Hidetoshi EBARA Daisuke MIKI Teruo ONISHI Shinji UEBAYASHI Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/01/01
Vol. E89-C  No. 1  pp. 30-37
Type of Manuscript:  Special Section PAPER (Special Section on Near-Field and Far-Field Electromagnetic Absorption and Shielding and Related Technologies)
Category: 
Keyword: 
dielectric measurementopen-ended waveguidesolid phantomFDTD methodimpedance matching
 Summary | Full Text:PDF(768.1KB)

Analysis of Absorbing Characteristics of One-Layer EM-Absorber Using CIP Method
Shinya WATANABE Youichi KAKUTA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/01/01
Vol. E89-C  No. 1  pp. 51-60
Type of Manuscript:  Special Section PAPER (Special Section on Near-Field and Far-Field Electromagnetic Absorption and Shielding and Related Technologies)
Category: 
Keyword: 
CIP methodmethod of characteristicstime splitting methodFDTD methodEM-absorber
 Summary | Full Text:PDF(560.1KB)

An Improvement of Communication Environment for ETC System by Using Transparent EM Wave Absorber
Hiroshi KURIHARA Yoshihito HIRAI Koji TAKIZAWA Takeo IWATA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/12/01
Vol. E88-C  No. 12  pp. 2350-2357
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
electronic toll collection system (ETC)transparent EM wave absorberresistive filmcircular polarized wave (CP wave)reflectivitytransmittivity
 Summary | Full Text:PDF(998.4KB)

Realization of Attenuation Poles, Spurious Resonance Suppression and Size Reduction by Microstrip SIR Loaded with Dielectric Rods
Ramesh K. POKHAREL Kouji WADA Osamu HASHIMOTO Takeshi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/12/01
Vol. E88-C  No. 12  pp. 2302-2309
Type of Manuscript:  Special Section PAPER (Special Section on Wireless Technologies and Computational Electromagnetics)
Category: Devices
Keyword: 
attenuation poledielectric rodsFDTD methodspurious responsesSIRtapped λ/2 microstrip resonator
 Summary | Full Text:PDF(629.1KB)

Investigation on EM Wave Absorbers by Using Resistive Film with Capacitive Reactance
Hiroshi KURIHARA Toshifumi SAITO Koji TAKIZAWA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/11/01
Vol. E88-C  No. 11  pp. 2156-2162
Type of Manuscript:  PAPER
Category: Electronic Materials
Keyword: 
EM wave absorberresistive filmcapacitive reactanceimpedanceDSRCwireless LAN
 Summary | Full Text:PDF(854KB)

Method for Estimating Complex Permittivity Based on Measuring Effective Permittivity of Dielectric Mixtures in Radio Frequency Band
Hidetoshi EBARA Kensuke TANI Teruo ONISHI Shinji UEBAYASHI Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/08/01
Vol. E88-B  No. 8  pp. 3269-3274
Type of Manuscript:  Special Section PAPER (Special Section of 2004 International Symposium on Electromagnetic Compatibility)
Category: Biological Effects
Keyword: 
dielectric measurementcoaxial linephospholipideffective permittivitymixing formula
 Summary | Full Text:PDF(639.8KB)

Out-of-Band Improvement by Microstrip Line BPFs with Multiple Attenuation Poles in Stopband Using Various Conditions of Coupling Length of Partially Coupled-Line Section
Kouji WADA Ramesh K. POKHAREL Takanobu OHNO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/07/01
Vol. E88-C  No. 7  pp. 1430-1439
Type of Manuscript:  Special Section PAPER (Special Section on Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with Their Applications)
Category: Resonators & Filters
Keyword: 
coupled-line BPFattenuation polesout-of-band characteristicsspurious responsesmicrostrip line
 Summary | Full Text:PDF(1.3MB)

Analysis of Error Due to Exclusion of Higher Modes on Complex Permittivity Measurement Using Waveguide with Flange
Kouji SHIBATA Osamu HASHIMOTO Ramesh K. POKHAREL 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/01/01
Vol. E88-C  No. 1  pp. 139-142
Type of Manuscript:  LETTER
Category: Microwaves, Millimeter-Waves
Keyword: 
measurement of complex pemittivityrectangular waveguide with flangeFDTDSDA
 Summary | Full Text:PDF(267.3KB)

Bandpass Filters Using Tunable Half-Wavelength Resonators with Transmission Zeros
Kouji WADA Shinya WATANABE Ryousuke SUGA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/01/01
Vol. E88-C  No. 1  pp. 68-76
Type of Manuscript:  Special Section PAPER (Special Section on Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics)
Category: 
Keyword: 
tunable half-wavelength resonatortap-couplingbandpass filtertransmission zero
 Summary | Full Text:PDF(835.5KB)

Log-Periodic Dipole Antenna Array-Type Optical Electric Field Sensor
Naomi HIDAKA Ken KOBAYASHI Hideaki SUGAMA Ryo USUI Yoshihiro TANABE Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/01/01
Vol. E88-C  No. 1  pp. 98-104
Type of Manuscript:  Special Section PAPER (Special Section on Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics)
Category: 
Keyword: 
optical electric field sensorantennamicrowavewide bandlithium niobate
 Summary | Full Text:PDF(713.6KB)

FOREWORD
Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/01/01
Vol. E88-C  No. 1  pp. 1-1
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(43.6KB)

A Method for Evaluating Door Structure of Microwave Oven
Kouta MATSUMOTO Osamu HASHIMOTO Kouji WADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/11/01
Vol. E87-C  No. 11  pp. 1997-2000
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
microwave ovencombined wavesFDTD methodshielding effectiveness
 Summary | Full Text:PDF(394.3KB)

Study of the Magnetic Field Properties around Household Appliances Using Coil Source Model as Prescribed by the European Standard EN50366
Shinichiro NISHIZAWA Friedrich LANDSTORFER Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/09/01
Vol. E87-C  No. 9  pp. 1636-1639
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
single coil modelequivalent source modelELFmagnetic fieldEN50366 (CENELEC)
 Summary | Full Text:PDF(1.6MB)

A Method for LTCC Resonators to Realize Improved-Resonant Characteristics on Reduced-Size Microstrip Structure
Ramesh K. POKHAREL Kouji WADA Osamu HASHIMOTO Takeshi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/09/01
Vol. E87-C  No. 9  pp. 1517-1523
Type of Manuscript:  Special Section PAPER (Special Section on Wave Technologies for Wireless and Optical Communications)
Category: Components and Devices
Keyword: 
dielectric rodsFDTD methodmicrostrip resonatorspurious responsesattenuation pole
 Summary | Full Text:PDF(793.1KB)

Measurement of Complex Permittivity for Liquid Phantom by Transmission Line Method Using Coaxial Line
Kouji SHIBATA Kensuke TANI Osamu HASHIMOTO Kouji WADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/05/01
Vol. E87-C  No. 5  pp. 689-693
Type of Manuscript:  Special Section PAPER (Special Section on Advances in Characterization and Measurement Technologies for Microwave and Millimeter-Wave Materials, Devices and Circuits)
Category: General Methods, Materials, and Passive Circuits
Keyword: 
measurement of complex pemittivityliquid phantomtransmission line methodcoaxial line
 Summary | Full Text:PDF(452.1KB)

Location of Multiple Transmission Zeros by Tap-Coupling Technique for Bandpass Filters and Duplexers Using Short-Ended λ/2 Resonators
Kouji WADA Yoshiyuki AIHARA Tomohide KAMIYAMA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/12/01
Vol. E86-C  No. 12  pp. 2403-2411
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Trends on Microwave and Millimeter Wave Application Technology)
Category: Passive(Filter)
Keyword: 
short-ended λ/2 resonatormultiple transmission zerostap-couplingbandpass filterduplexer
 Summary | Full Text:PDF(983.9KB)

Realization of Low Spurious Responses by Various Bandpass Filters Using Open-Ended λ/2 Resonators
Kouji WADA Takanobu OHNO Kouichi NAKAGAWA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/12/01
Vol. E86-C  No. 12  pp. 2394-2402
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Trends on Microwave and Millimeter Wave Application Technology)
Category: Passive(Filter)
Keyword: 
open-ended λ/2 resonatorbandpass filterpoint-coupling techniquelow spurious responsesattenuation poles
 Summary | Full Text:PDF(1.2MB)

A Class of a Planar Duplexer Consisting of BPFs with Attenuation Poles Designed by Manipulating Tapped Resonators
Kouji WADA Takanobu OHNO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/08/01
Vol. E86-C  No. 8  pp. 1613-1620
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: 
Keyword: 
planar duplexertapped resonatorattenuation polebandpass filter
 Summary | Full Text:PDF(833.8KB)

An Empirical Study of a Coplanar Bandpass Filter with Attenuation Poles Using Short-Ended Half-Wavelength Resonators
Kouji WADA Yoshiyuki AIHARA Osamu HASHIMOTO Hiroshi HARADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/02/01
Vol. E86-A  No. 2  pp. 273-279
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
short-ended half-wavelength resonatortap-couplingattenuation polebandpass filtercoplanar waveguide (CPW)
 Summary | Full Text:PDF(1.1MB)

An Effective Method for Designing Bandpass Filters Using λ/4 Resonators for Improving Out-of-Band Characteristics
Kouji WADA Tomohide KAMIYAMA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/02/01
Vol. E86-C  No. 2  pp. 150-161
Type of Manuscript:  Special Section PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication)
Category: Passive (Filter)
Keyword: 
λ/4 resonatorattenuation poleskirt characteristicsspurious responsesbandpass filter
 Summary | Full Text:PDF(1.1MB)

Design of Bandpass Filters with a Function to Control the Number of Attenuation Poles
Kouji WADA Yasuhisa YAMAMOTO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 578-585
Type of Manuscript:  Special Section PAPER (Special Issue on Signals, Systems and Electronics Technology)
Category: Circuit
Keyword: 
attenuation polestub resonatorbandpass filtertap-connection technique
 Summary | Full Text:PDF(623.9KB)

Technique for Improving Out-of-Band Characteristics of Planar Microwave Filters Using Tapped Resonators
Kouji WADA Kouichi NAKAGAWA Osamu HASHIMOTO Hiroshi HARADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/02/01
Vol. E85-C  No. 2  pp. 391-399
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
tapped resonatorattenuation polespurious responsesplanar microwave filter
 Summary | Full Text:PDF(794.5KB)

Induced Current Density in the Human Body Using Equivalent Sources for Low-Frequency Inhomogeneous Fields
Shinichiro NISHIZAWA Wolfgang SPREITZER Hans-Oliver RUOSS Friedrich M. LANDSTORFER Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/10/01
Vol. E84-C  No. 10  pp. 1612-1614
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
inhomogeneous magnetic fieldslow-frequenciesequivalent sourcesdosimetryinduced current densitieshousehold appliances
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Estimation of Complex Permittivity Using Rectangular Waveguide with Flange by FDTD Method
Kouji SHIBATA Osamu HASHIMOTO Kouji WADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/07/01
Vol. E84-C  No. 7  pp. 977-980
Type of Manuscript:  Special Section LETTER (Special Issue on Techniques for Constructing Microwave Simulators--Design and Analysis Tools for Electromagnetic Fields, Circuits, and Antennas--)
Category: 
Keyword: 
rectangular waveguide with flangenon-destructive measurementstanding wavecomplex permittivityFDTD method
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Low Loss Magnetic Plate Application for Increasing Radiation Efficiency of Cellular Telephones
Eiji HANKUI Tatsuya NAKAMURA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/06/01
Vol. E84-C  No. 6  pp. 814-822
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
human phantom modelmagnetic platecellular telephoneantenna performanceFDTD method
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Fundamentals of Open-Ended Resonators and Their Application to Microwave Filters
Kouji WADA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/11/25
Vol. E83-C  No. 11  pp. 1763-1775
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
open-ended resonatortap feedlow spurious responsestransmission zerodual-passband response
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Near-Field Shielding Effect of Oval Human Model for Dipole Antenna Using High-Loss Dielectric and Magnetic Materials
Shinichiro NISHIZAWA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/11/25
Vol. E83-B  No. 11  pp. 2513-2518
Type of Manuscript:  PAPER
Category: Electromagnetic Compatibility(EMC)
Keyword: 
high loss dielectric-magnetic materialoval human modeldipole antennanear-field shieldFDTD method
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FOREWORD
Takashi IWASAKI Nobuo KUWABARA Masao TAKI Noboru SCHIBUYA Osamu HASHIMOTO Osami WADA Takashi HARADA Yukio YAMANAKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/03/25
Vol. E83-B  No. 3  pp. 433-434
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(408.7KB)

Weatherability of 60 GHz Wave Absorber Using Epoxy-Modified Urethane Rubber Mixed with Carbon Particles
Tetsu SOH Kouji WADA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/03/25
Vol. E83-C  No. 3  pp. 496-501
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
millimeter-wave absorberepoxy-modified urethane rubber mixed with carbon particlesaccelerated artificial exposure testweatherabilitytemperature characteristics
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The Transparent Wave Absorber Using Resistive Film for V-Band Frequency
Koji TAKIZAWA Osamu HASHIMOTO Takumi ABE Shinkichi NISHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/06/25
Vol. E81-C  No. 6  pp. 941-947
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Module Technology)
Category: Related Technical Issues
Keyword: 
transparent wave absorberresistive-filmV-band frequencydesign chart
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Reflection Characteristics Measurement from a Truck and a Passenger Car at 60 GHz Frequency Band
Hiroyuki ISHIZAKA Osamu HASHIMOTO Hisashi HIGASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/06/25
Vol. E81-C  No. 6  pp. 948-952
Type of Manuscript:  Special Section LETTER (Special Issue on Microwave and Millimeter-Wave Module Technology)
Category: 
Keyword: 
RCSradarmillimeter-waveCollision Warning System
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Design and Manufacturing of Resistive-Sheet Type Wave Absorber at 60GHz Frequency Band
Osamu HASHIMOTO Takumi ABE Ryuji SATAKE Miki KANEKO Yasuo HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/02/25
Vol. E78-B  No. 2  pp. 246-252
Type of Manuscript:  Special Section PAPER (Special Issue on Electromagnetic Compatibility)
Category: 
Keyword: 
wave absorbermm-wave frequencydesign chartmulti-layered type
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Measurement of Wave Intensity Reflected from Object by Range Doppler Imaging in Ordinary Laboratory Room
Osamu HASHIMOTO Takumi ABE Wataru TSUCHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1994/06/25
Vol. E77-C  No. 6  pp. 919-924
Type of Manuscript:  Special Section PAPER (Special Issue on Measurement Techniques for Microwave/Millimeter Wave)
Category: 
Keyword: 
measurement methodwave absorberreflection lossrange Doppler imaging
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A Study on Reflection Characteristics of Lossy Anisotropic Rubber Sheets
Osamu HASHIMOTO Yasutaka SHIMIZU 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1986/04/25
Vol. E69-E  No. 4  pp. 341-343
Type of Manuscript:  Special Section LETTER (Special Issue: Papers from 1986 National Convention IECE Japan)
Category: Microwave Circuits
Keyword: 
 Summary | Full Text:PDF(228.7KB)