Jiro HIROKAWA


Plate-Laminated Waveguide Monopulse Slot Array Antenna with Full-Corporate-Feed in the E-Band
Xin XU Jiro HIROKAWA Makoto ANDO 
Publication:   
Publication Date: 2017/04/01
Vol. E100-B  No. 4  pp. 575-585
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
E-bandwaveguide slot antennamillimeter-wave antennamonopulse array antennacomparatordiffusion bonding
 Summary | Full Text:PDF(6MB)

Alignment Control System Using Beam-Tilting 1-D Waveguide-Slot Array Antennas for 120-GHz-Band Corporate-Feed High-Gain 2-D Arrays
Akihiko HIRATA Jun TAKEUCHI Keisuke HASHIMOTO Jiro HIROKAWA 
Publication:   
Publication Date: 2017/01/01
Vol. E100-B  No. 1  pp. 158-166
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
alignment controlmillimeter wavesplate-laminated waveguidediffusion bondingslot antenna
 Summary | Full Text:PDF(2.2MB)

A 12×16-Element Double-Layer Corporate-Feed Waveguide Slot Array Antenna
Satoshi ITO Miao ZHANG Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/01/01
Vol. E99-B  No. 1  pp. 40-47
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas, Propagation and Wireless Systems Related to Topics in ISAP2014)
Category: Antennas and Propagation
Keyword: 
waveguide slot array antennacorporate-feed circuitcross-junction
 Summary | Full Text:PDF(3.8MB)

A 60GHz-Band High-Efficiency Antenna with a Thick Resin Layer and Differentially Fed through a Hole in a Silicon Chip
Naoya OIKAWA Jiro HIROKAWA Hiroshi NAKANO Yasutake HIRACHI Hiroshi ISONO Atsushi ISHII Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/01/01
Vol. E99-B  No. 1  pp. 27-32
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas, Propagation and Wireless Systems Related to Topics in ISAP2014)
Category: Antennas and Propagation
Keyword: 
differential-feed antennapatch antennaon-chip antennaradiation efficiencyreverberation chamber
 Summary | Full Text:PDF(2.3MB)

Design of mm-Wave RLSAs with Lossy Waveguides by Slot Coupling Control Techniques
Tung NGUYEN Jiro HIROKAWA Makoto ANDO Manuel SIERRA CASTAÑER 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/09/01
Vol. E98-B  No. 9  pp. 1865-1872
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
lossy waveguidesradial line slot antennamillimeter wavecoupling factors
 Summary | Full Text:PDF(2.4MB)

Rain Sensing Using Dual-Frequency Measurements from Small-Scale Millimeter-Wave Network
Hung V. LE Capsoni CARLO Nebuloni ROBERTO Luini LORENZO Takuichi HIRANO Toru TANIGUCHI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/06/01
Vol. E98-B  No. 6  pp. 1040-1049
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
millimeter-wave networkrain attenuationdual-frequencyrain sensingrain rate estimation
 Summary | Full Text:PDF(4.4MB)

FOREWORD
Jiro HIROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/05/01
Vol. E98-B  No. 5  pp. 754-754
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(209.7KB)

A Simple Through-Hole Based Transformer between Microstrip Line and Post-Wall Waveguide for Millimeter-Wave Applications
Yusuke UEMICHI Ryouhei HOSONO Ning GUAN Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/10/01
Vol. E97-C  No. 10  pp. 941-947
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-wave Technologies)
Category: 
Keyword: 
post-wall waveguidetransformerliquid crystal polymermillimeter-wave
 Summary | Full Text:PDF(2MB)

Phased Array Antenna Beam Steering Scheme for Future Wireless Access Systems Using Radio-over-Fiber Technique
Masayuki OISHI Yoshihiro NISHIKAWA Kosuke NISHIMURA Keiji TANAKA Shigeyuki AKIBA Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/07/01
Vol. E97-B  No. 7  pp. 1281-1289
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
radio-over-fiberchromatic dispersionphased array antennabeam steeringmillimeter-wave band
 Summary | Full Text:PDF(2.9MB)

Propagation Characteristics of Honeycomb Structures Used in mm-Wave Radial Line Slot Antennas
Tung NGUYEN Rushanthi JAYAWARDENE Kimio SAKURAI Jiro HIROKAWA Makoto ANDO Manuel SIERRA CASTAÑER Osamu AMANO Shuichi KOREEDA Takaomi MATSUZAKI Yukio KAMATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/06/01
Vol. E97-B  No. 6  pp. 1139-1147
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
satellite applicationshoneycomb structureradial line slot antennamillimeter wave
 Summary | Full Text:PDF(7.8MB)

Millimeter-Wave Propagation Characteristics and Localized Rain Effects in a Small-Scale University Campus Network in Tokyo
Hung V. LE Hasan Md. MOHIBUL Takuichi HIRANO Toru TANIGUCHI Akira YAMAGUCHI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/05/01
Vol. E97-B  No. 5  pp. 1012-1021
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
millimeter-waverain attenuationlocalized rainspatial variability of rainfalldiversity
 Summary | Full Text:PDF(4.7MB)

A Wideband 16×16-Element Corporate-Feed Hollow-Waveguide Slot Array Antenna in the 60-GHz Band
Takashi TOMURA Jiro HIROKAWA Takuichi HIRANO Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/04/01
Vol. E97-B  No. 4  pp. 798-806
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
corporate feedmillimeter-wave bandwaveguide slot arraywideband
 Summary | Full Text:PDF(3.2MB)

A Partially-Corporate Feed Double-Layer Waveguide Slot Array with the Sub-Arrays also Fed in Alternating-Phases
Miao ZHANG Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/02/01
Vol. E97-B  No. 2  pp. 469-475
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
alternating-phase feedpartially-corporate feeddouble-layer waveguide slot arraydiffusion bondingslot couplerstanding-wave excitationcompound slot
 Summary | Full Text:PDF(3.7MB)

Double-Layer Plate-Laminated Waveguide Slot Array Antennas for a 39GHz Band Fixed Wireless Access System
Miao ZHANG Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/01/01
Vol. E97-B  No. 1  pp. 122-128
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
plate-laminated waveguidewaveguide slot arraydouble-layerpartially-corporate feeddiffusion bondingFWA system
 Summary | Full Text:PDF(3MB)

Manufacture and Performance of a 60GHz-Band High-Efficiency Antenna with a Thick Resin Layer and the Feed through a Hole in a Silicon Chip
Jun ASANO Jiro HIROKAWA Hiroshi NAKANO Yasutake HIRACHI Hiroshi ISONO Atsushi ISHII Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/12/01
Vol. E96-B  No. 12  pp. 3108-3115
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
on-chip antennaconnecting lossradiation efficiencyreverberation chamber
 Summary | Full Text:PDF(2.5MB)

An Equivalent Double Layer Model for a Fast Design and Analysis of High Gain-Multilayer Radial Line Slot Antennas
Tung NGUYEN Rushanthi JAYAWARDENE Yasutomo TAKANO Kimio SAKURAI Jiro HIROKAWA Makoto ANDO Osamu AMANO Shuichi KOREEDA Takaomi MATSUZAKI Yukio KAMATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/11/01
Vol. E96-B  No. 11  pp. 2891-2900
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
satellite applicationhigh gainmethod of momentshoneycombmultilayerradial line slot antenna
 Summary | Full Text:PDF(6.4MB)

Design and Measurement of the Plate Laminated Waveguide Slot Array Antenna and Its Feasibility for Wireless Link System in the 120 GHz Band
Dongjin KIM Jiro HIROKAWA Kimio SAKURAI Makoto ANDO Takuma TAKADA Tadao NAGATSUMA Jun TAKEUCHI Akihiko HIRATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/08/01
Vol. E96-B  No. 8  pp. 2102-2111
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
waveguide antennadiffusion bondingfull corporate feeddata transmission
 Summary | Full Text:PDF(3.3MB)

LTCC Partially-Filled Post-Wall Rectangular-Waveguide Slot Array Antenna in the Millimeter-Wave Band
Yuanfeng SHE Jiro HIROKAWA Makoto ANDO Daisuke HANATANI Masahiro FUJIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/10/01
Vol. E95-C  No. 10  pp. 1635-1642
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
waveguideLTCClossslot arraylong-line effect millimeter-wave
 Summary | Full Text:PDF(2.4MB)

A High-Efficiency Circularly-Polarized Aperture Array Antenna with a Corporate-Feed Circuit in the 60 GHz Band
Yohei MIURA Jiro HIROKAWA Makoto ANDO Kazufumi IGARASHI Goro YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/10/01
Vol. E94-C  No. 10  pp. 1618-1625
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Microwave and Millimeter-Wave Antennas
Keyword: 
array antennacorporate-feedcircular polarized wavehigh efficiency
 Summary | Full Text:PDF(1.9MB)

Eigenmode Analysis of Propagation Constant for a Microstrip Line with Dummy Fills on a Si CMOS Substrate
Yuya ONO Takuichi HIRANO Kenichi OKADA Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/06/01
Vol. E94-C  No. 6  pp. 1008-1015
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
silicon CMOSmicrostrip linepropagation constantdummy filleigenmode analysisperiodic structuremillimeter wave
 Summary | Full Text:PDF(1.9MB)

Loss of Post-Wall Waveguides and Efficiency Estimation of Parallel-Plate Slot Arrays Fed by the Post-Wall Waveguide in the Millimeter-Wave Band
Yuanfeng SHE Thi Huong TRAN Koh HASHIMOTO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/03/01
Vol. E94-C  No. 3  pp. 312-320
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
post-wall waveguideeffective conductivitytransmission lossantenna efficiencyloss factor
 Summary | Full Text:PDF(2.1MB)

Full-Wave Design Considering Slot Admittance in 2-D Waveguide Slot Arrays with Perfect Input Matching
Miao ZHANG Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/03/01
Vol. E94-B  No. 3  pp. 725-734
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
waveguide slot arraymethod of momentsfull-wave analysisequivalent circuitslot admittanceinput matchingTaylor distribution
 Summary | Full Text:PDF(3.2MB)

A Center-Feed Linear Array of Reflection-Canceling Slot Pairs on Post-Wall Waveguide
Jae-Ho LEE Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/01/01
Vol. E94-B  No. 1  pp. 326-329
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
center-feed arraypost-wall waveguidesubstrate integrated waveguide (SIW)reflection-canceling slot pair
 Summary | Full Text:PDF(378.9KB)

Practical Slot Array Design by Method of Moments Using One Basis Function and Constant Correction Length
Jae-Ho LEE Takuichi HIRANO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/01/01
Vol. E94-B  No. 1  pp. 158-165
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
method of moments (MoM)slotted waveguide arrayslot correction lengthslot couplingnarrow and rectangular slot
 Summary | Full Text:PDF(1.7MB)

A Coaxial Feeder with Two Pairs of Parasitic Pins for Realizing Rotationally Symmetric Aperture Illumination in Spiral Array Radial Line Slot Antennas
Hideki UEDA Jiro HIROKAWA Makoto ANDO Matteo ALBANI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/10/01
Vol. E93-B  No. 10  pp. 2554-2561
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Technologies in Antennas and Propagation in Conjunction with Main Topics of ISAP2009)
Category: Antennas
Keyword: 
spiral array radial line slot antennasidelobeaperture efficiencyfeeding structure
 Summary | Full Text:PDF(2.3MB)

Design of a Partially-Corporate Feed Double-Layer Slotted Waveguide Array Antenna in 39 GHz Band and Fabrication by Diffusion Bonding of Laminated Thin Metal Plates
Miao ZHANG Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/10/01
Vol. E93-B  No. 10  pp. 2538-2544
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Technologies in Antennas and Propagation in Conjunction with Main Topics of ISAP2009)
Category: Antennas
Keyword: 
double-layerslotted waveguide arraypartially-corporate feeddiffusion bondingthin metal plate
 Summary | Full Text:PDF(1.6MB)

A Post-Wall Center-Feed Waveguide Circuit Consisting of T-Junctions for Reducing the Slot-Free Area in a Parallel Plate Slot Array Antenna
Koh HASHIMOTO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/07/01
Vol. E93-C  No. 7  pp. 1047-1054
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
millimeter-wave antennaspost-wall waveguidesparallel plate waveguidesslot array antennascenter-feed antennas
 Summary | Full Text:PDF(3.5MB)

Connected Post-Wall (C-PW) Waveguide for Efficient Design of Broad Wall Slots by Using Equivalent Solid-Wall Waveguide
Jae-Ho LEE Kimio SAKURAI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/07/01
Vol. E93-C  No. 7  pp. 1038-1046
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
post-wall waveguidesubstrate integrated waveguide (SIW)laminated waveguideconnected post-wall (C-PW)slotted waveguide
 Summary | Full Text:PDF(1.6MB)

Design of Post-Wall Feed Waveguide for a Parallel Plate Slot Array by an Analysis Model with Corrected Solid-Walls
Koh HASHIMOTO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/06/01
Vol. E93-B  No. 6  pp. 1566-1573
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
millimeter-wave antennapost-wall waveguideparallel plate waveguideslot array antennamethod of moments
 Summary | Full Text:PDF(1.9MB)

Design of Narrow Wall Windows in a Waveguide to Feed Partially-Dielectric-Filled Oversized-Rectangular Waveguide Based on 2-Dimensional Analyses of Two Orthogonal Directions
Miroslav SAMARDIJA Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/04/01
Vol. E93-B  No. 4  pp. 871-878
Type of Manuscript:  PAPER
Category: Devices/Circuits for Communications
Keyword: 
dielectric-filledoversizedwaveguidefeedwindow
 Summary | Full Text:PDF(321.1KB)

Evaluation of Effective Conductivity of Copper-Clad Dielectric Laminate Substrates in Millimeter-Wave Bands Using Whispering Gallery Mode Resonators
Thi Huong TRAN Yuanfeng SHE Jiro HIROKAWA Kimio SAKURAI Yoshinori KOGAMI Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/12/01
Vol. E92-C  No. 12  pp. 1504-1511
Type of Manuscript:  PAPER
Category: Electronic Materials
Keyword: 
millimeter wave measurementWhispering Gallery mode resonatorcomplex permittivityconductivitydielectric substrates
 Summary | Full Text:PDF(1MB)

Analysis and Design of a Reflection-Cancelling Transverse Slot-Pair Array with Grating-Lobe Suppressing Baffles
Takehito SUZUKI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/10/01
Vol. E92-B  No. 10  pp. 3236-3242
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
slotted waveguide arrayreflection-cancelling slot-pairgrating-lobebaffleMethod of MomentSpectrum of Two-Dimensional Solutionsmutual coupling
 Summary | Full Text:PDF(1.6MB)

Bandwidth Enhancement of Aperture Feed by an Air Rectangular Cavity Backing in a LTCC Post-Wall Waveguide
JungAun LEE Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/01/01
Vol. E92-C  No. 1  pp. 121-126
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
post-wall waveguidemillimeter-wave bandtransduceraperture
 Summary | Full Text:PDF(1.8MB)

Analysis and Uniform Design of a Single-Layer Slotted Waveguide Array Antenna with Baffles
Takehito SUZUKI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/01/01
Vol. E92-B  No. 1  pp. 150-158
Type of Manuscript:  PAPER
Category: Devices/Circuits for Communications
Keyword: 
slotted waveguide arraybafflemethod of momentspectrum of two-dimensional solutionsmutual coupling
 Summary | Full Text:PDF(1.6MB)

Step Width Tolerable for Offset of the Aperture in a Millimeter-Wave Transducer between Post-Wall and Hollow Standard Waveguides
JungAun LEE Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/12/01
Vol. E91-C  No. 12  pp. 1910-1916
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
post-wall waveguidemillimeter-wave bandtransduceraperture
 Summary | Full Text:PDF(1.4MB)

Fabrication of Alternating-Phase Fed Single-Layer Slotted Waveguide Arrays Using Plastic Materials with Metal-Plating
Miao ZHANG Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/08/01
Vol. E91-B  No. 8  pp. 2761-2763
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
fixed wireless access (FWA)slotted waveguide arrayplastic materialmetal-plating
 Summary | Full Text:PDF(852.4KB)

The Ridged Cross-Junction Multiple-Way Power Divider for Small Blockage and Symmetrical Slot Arrangement in the Center Feed Single-Layer Slotted Waveguide Array
Yasuhiro TSUNEMITSU Goro YOSHIDA Naohisa GOTO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/06/01
Vol. E91-B  No. 6  pp. 1767-1772
Type of Manuscript:  Special Section PAPER (Special Section on 2007 International Symposium on Antennas and Propagation)
Category: Antennas
Keyword: 
alternating phase fed arraycenter-feedsingle-layer waveguidecross-junction power dividerPDD
 Summary | Full Text:PDF(1.3MB)

A Lightweight Radial Line Slot Antenna with Honeycomb Structure for Space Use
Hideki UEDA Jiro HIROKAWA Makoto ANDO Osamu AMANO Yukio KAMATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/03/01
Vol. E91-B  No. 3  pp. 871-877
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
space uselightweighthoneycombmulti-layerradial line slot antenna
 Summary | Full Text:PDF(2.3MB)

A Cost-Effective Transition between a Microstrip Line and a Post-Wall Waveguide Using a Laminated LTCC Substrate in 60-GHz Band
Takafumi KAI Jiro HIROKAWA Makoto ANDO Hiroshi NAKANO Yasutake HIRACHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/04/01
Vol. E90-C  No. 4  pp. 907-910
Type of Manuscript:  LETTER
Category: Microwaves, Millimeter-Waves
Keyword: 
coaxialpost-wall waveguidemicrostrip linemillimeter-wave bandLTCC
 Summary | Full Text:PDF(914.1KB)

Moment Method Analysis of a Plane Wave Generator in an Oversized Rectangular Waveguide
Takafumi KAI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/01/01
Vol. E90-B  No. 1  pp. 105-113
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
millimeter-waveplane wave generatoroversized rectangular waveguidemoment methodeigenmode
 Summary | Full Text:PDF(842.2KB)

A Single-Layer Hollow-Waveguide 8-Way Butler Matrix
Shin-ichi YAMAMOTO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/07/01
Vol. E89-C  No. 7  pp. 1080-1088
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
short-slot couplerlength reductionButler matrixwaveguide structuresingle-layerlow loss
 Summary | Full Text:PDF(989.5KB)

Design of 1 m2 Order Plasma Excitation Single-Layer Slotted Waveguide Array with Conducting Baffles and Quartz Glass Strips Using the GSM-MoM Analysis
Takuichi HIRANO Kimio SAKURAI Jiro HIROKAWA Makoto ANDO Tetsuya IDE Atsushi SASAKI Kazufumi AZUMA Yukihiko NAKATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/05/01
Vol. E89-B  No. 5  pp. 1627-1635
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
slotted waveguide arraysunit cellplasmageneralized scattering matrix methodmethod of momentsbaffles
 Summary | Full Text:PDF(1.4MB)

A Coaxial Line to Post-Wall Waveguide Transition for a Cost-Effective Transformer between a RF-Device and a Planar Slot-Array Antenna in 60-GHz Band
Takafumi KAI Yusuke KATOU Jiro HIROKAWA Makoto ANDO Hiroshi NAKANO Yasutake HIRACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/05/01
Vol. E89-B  No. 5  pp. 1646-1653
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
home-link systemcoaxialpost-wall waveguidemillimeter-wave bandPTFE
 Summary | Full Text:PDF(1MB)

A Waveguide Broad-Wall Transverse Slot Linear Array with Reflection-Canceling Inductive Posts and Grating-Lobe Suppressing Parasitic Dipoles
M.G. SORWAR HOSSAIN Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/12/01
Vol. E88-C  No. 12  pp. 2266-2273
Type of Manuscript:  Special Section PAPER (Special Section on Wireless Technologies and Computational Electromagnetics)
Category: Antenna Design
Keyword: 
transverse slotlinear arrayboresight beamparasitic dipolegrating lobedual parasitic beam and reflection
 Summary | Full Text:PDF(1MB)

A Three-Way Divider for Partially-Corporate Feed in an Alternating Phase-Fed Single-Layer Slotted Waveguide Array
Miao ZHANG Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/11/01
Vol. E88-B  No. 11  pp. 4339-4345
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
dividercorporate feedinductive postalternating phase feedsingle-layer slotted waveguide arrays
 Summary | Full Text:PDF(1.3MB) | (Errata(Vol.E89-B NO.3,2006))

An Alternating-Phase Fed Single-Layer Slotted Waveguide Array in 76 GHz Band and Its Sidelobe Suppression
Yuichi KIMURA Masanari TAKAHASHI Jiro HIROKAWA Makoto ANDO Misao HANEISHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/10/01
Vol. E88-C  No. 10  pp. 1952-1960
Type of Manuscript:  Special Section PAPER (Special Section on Recent Technologies on Devices, Circuits, and Systems for Millimeter-wave ITS Applications)
Category: 
Keyword: 
alternating-phaseslotted waveguide arrayplanar antennamillimeter wavesidelobe suppression
 Summary | Full Text:PDF(2.6MB)

A Half-Sized Post-Wall Short-Slot Directional Coupler with Hollow Rectangular Holes in a Dielectric Substrate
Shin-ichi YAMAMOTO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/07/01
Vol. E88-C  No. 7  pp. 1387-1394
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: Passive Circuits
Keyword: 
short-slot couplerlength reductionButler matrixpost-wall waveguidedielectric substraterectangular hole
 Summary | Full Text:PDF(2.1MB)

Reflection Characteristics of Center-Feed Single-Layer Waveguide Arrays
Yasuhiro TSUNEMITSU SeHyun PARK Jiro HIROKAWA Makoto ANDO Yohei MIURA Yasuhiro KAZAMA Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/06/01
Vol. E88-B  No. 6  pp. 2313-2319
Type of Manuscript:  Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation)
Category: 
Keyword: 
alternating phase fed arraycenter-feedsingle-layer waveguidereflection
 Summary | Full Text:PDF(1.7MB)

Grating Lobes Suppression in Transverse Slot Linear Array with a Dual Parasitic Beam of Strip Dipoles
M.G. Sorwar HOSSAIN Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/06/01
Vol. E88-B  No. 6  pp. 2320-2326
Type of Manuscript:  Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation)
Category: 
Keyword: 
transverse slotbore-sight beamparasitic dipolegrating lobe and dual parasitic beam
 Summary | Full Text:PDF(786.6KB)

A Post-Wall Waveguide Slot Array with a Three-Way Power Divider on a Single-Layer Dielectric Substrate
Shin-ichi YAMAMOTO Nozomu HIKINO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/04/01
Vol. E88-B  No. 4  pp. 1740-1742
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
sectoral beampower dividerpost-wall waveguide
 Summary | Full Text:PDF(716.6KB)

Feed through an Aperture to a Post-Wall Waveguide with Step Structure
Takafumi KAI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/03/01
Vol. E88-B  No. 3  pp. 1298-1302
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
post-wall waveguidemillimeter-wave bandsaperture
 Summary | Full Text:PDF(950KB)

A Design of a Leaky Waveguide Crossed-Slot Linear Array with a Matching Element by the Method of Moments with Numerical-Eigenmode Basis Functions
Takuichi HIRANO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/03/01
Vol. E88-B  No. 3  pp. 1219-1226
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
crossed-slotslotted leaky waveguide arrayscircularly polarized wavefinite element methodmethod of momentseigenmode basis functions
 Summary | Full Text:PDF(1.5MB)

Analysis of a Waveguide with a Round-Ended Wide Straight Slot by the Method of Moments Using Numerical-Eigenmode Basis Functions
Miao ZHANG Takuichi HIRANO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/08/01
Vol. E87-B  No. 8  pp. 2319-2326
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
round-ended slotwaveguidenumerical eigenmode basis functionsMethod of Momentsfinite element methodequivalent-area modification
 Summary | Full Text:PDF(1004.9KB)

A Study of Aspect Ratio of the Aperture and the Effect on Antenna Efficiency in Oversized Rectangular Slotted Waveguide Arrays
Hisahiro KAI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/06/01
Vol. E87-B  No. 6  pp. 1623-1630
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
parallel plate slotted waveguide arraysoversized rectangular slotted waveguide arraysaperture efficiencyaperture illuminationaspect ratio
 Summary | Full Text:PDF(2.9MB)

Mechanical Phase Shifting in the Power Divider for Single-Layer Slotted Waveguide Arrays
Makoto HIGAKI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/02/01
Vol. E87-B  No. 2  pp. 310-316
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
single-layer slotted waveguide arraymechanical beam scanningpower dividermechanical phase shiter
 Summary | Full Text:PDF(1.3MB)

A Transformer between a Thin Post-Wall Waveguide and a Standard Metal Waveguide via a Dielectric Substrate Insertion with Slits Etched on It
Takafumi KAI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/01/01
Vol. E87-B  No. 1  pp. 200-203
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
millimeter-wave band transformervery thin post-wall waveguidedielectric substrate with slits etched on both edges
 Summary | Full Text:PDF(520.4KB)

A Radial Line Slot Antenna Fed by a Rectangular Waveguide through a Crossed Slot
Kaoru SUDO Takuichi HIRANO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/10/01
Vol. E86-B  No. 10  pp. 3063-3070
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
solar power satelliteradial line slot antennafeedercrossed slotmethod of momentsnumerical eigenmode basis function
 Summary | Full Text:PDF(1.6MB)

Simple Analysis of a Slot and a Reflection-Canceling Post in a Rectangular Waveguide Using only the Axial Uniform Currents on the Post Surface
Se-Hyun PARK Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/08/01
Vol. E86-B  No. 8  pp. 2482-2487
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
slot antennawaveguidepost
 Summary | Full Text:PDF(549.3KB)

A Beam Switching Slot Array with a 4-Way Butler Matrix Installed in Single Layer Post-Wall Waveguides
Shin-ichi YAMAMOTO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/05/01
Vol. E86-B  No. 5  pp. 1653-1659
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
Butler matrixswitching arraybase station antennapost-wall waveguidemillimeter-wave
 Summary | Full Text:PDF(1.5MB)

Development of Planar Antennas
Yasuo SUZUKI Jiro HIROKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/03/01
Vol. E86-B  No. 3  pp. 909-924
Type of Manuscript:  INVITED PAPER (Special Issue on Historical Review of Antenna Systems in Japan)
Category: 
Keyword: 
planar antennacircular polarizationmicrostrip antennaradial line slot antennaparallel plate waveguide
 Summary | Full Text:PDF(4MB)

Proposal for a Slot Pair Array Having an Invariant Main Beam Direction with a Cosecant Radiation Pattern Using a Post-Wall Waveguide
Takeshi OHNO Koichi OGAWA Toshihiro TERAOKA Jiro HIROKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/02/01
Vol. E86-C  No. 2  pp. 176-183
Type of Manuscript:  Special Section PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication)
Category: Antenna (Slot)
Keyword: 
FWAmain beam directiontraveling wavecosecant radiation patternTalor radiation pattern
 Summary | Full Text:PDF(782.4KB)

A Planar Cross-Junction Power Divider for the Center Feed in Single-Layer Slotted Waveguide Arrays
Se-Hyun PARK Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/11/01
Vol. E85-B  No. 11  pp. 2476-2481
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
power dividerwaveguideinductive postsingle-layer slotted waveguide array
 Summary | Full Text:PDF(890.4KB)

A Millimeter-Wave Radial Line Slot Antenna Fed by a Rectangular Waveguide through a Ring Slot
Kaoru SUDO Akira AKIYAMA Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/10/01
Vol. E84-C  No. 10  pp. 1521-1527
Type of Manuscript:  Special Section PAPER (Special Issue on Millimeter-Wave Circuits and Fabrication Technologies Opening up the 21st Century)
Category: 
Keyword: 
planer antenna for 38 GHz band FWAradial line slot antenna-rectangular/circular waveguide transformercircular polarizationrotation electric mode
 Summary | Full Text:PDF(2.3MB)

Low Sidelobe Single-Layer Slotted Waveguide Arrays at 76 GHz Band
Yuichi KIMURA Kenji FUKAZAWA Jiro HIROKAWA Makoto ANDO Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/09/01
Vol. E84-B  No. 9  pp. 2377-2386
Type of Manuscript:  Special Section PAPER (Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
Category: Millimeter-Wave Antennas
Keyword: 
slotwaveguidelow sidelobemillimeter wave antenna
 Summary | Full Text:PDF(1.3MB)

A Two-Beam Waveguide Slot Array with Sidelobe Suppression
Yuichi KIMURA Hiroshi SHINODA Kenta WATANABE Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/04/01
Vol. E84-B  No. 4  pp. 1070-1078
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
slotwaveguidesidelobemulti-beam
 Summary | Full Text:PDF(343.2KB)

60 GHz Band Small Aperture Conical Beam Radial Line Slot Antennas
Akira AKIYAMA Jiro HIROKAWA Makoto ANDO Eriko TAKEDA Yukikazu ARAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1229-1235
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Phased Arrays and Antennas
Keyword: 
radial line slot antennaplanar antennaconical beammillimeter wave
 Summary | Full Text:PDF(1.3MB)

A Full-Wave Analysis of a Complete Model for a Radial Line Slot Antenna
Tetsuya YAMAMOTO Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/01/25
Vol. E82-B  No. 1  pp. 165-173
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
radial line slot antennasmall aperturerectangular cavitymethod of moment
 Summary | Full Text:PDF(1.2MB)

Two-Way Power Divider for Partially Parallel Feed in Single-Layer Slotted Waveguide Arrays
Kenji FUKAZAWA Jiro HIROKAWA Makoto ANDO Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/06/25
Vol. E81-B  No. 6  pp. 1248-1254
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
slotted waveguide arraypower dividerfeed circuitτ-junction
 Summary | Full Text:PDF(653.6KB)

Phase Control of Circular Polarization from a Slot with a Parasitic Dipole
Kyeong-Sik MIN Jiro HIROKAWA Kimio SAKURAI Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/03/25
Vol. E81-B  No. 3  pp. 668-673
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
parasitic dipoleinclined slotcircular polarizationnarrow-wallwaveguide
 Summary | Full Text:PDF(540.1KB)

A Single-Layer Linear-to-Circular Polarization Converter for a Narrow-Wall Slotted Waveguide Array
Kyeong-Sik MIN Jiro HIROKAWA Kimio SAKURAI Makoto ANDO Naohisa GOTO Yasuhiko HARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/08/25
Vol. E80-B  No. 8  pp. 1264-1272
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
single layerpolarization converterdipole arraynarrow-wallslotwaveguide
 Summary | Full Text:PDF(762.2KB)

Single-Layer Slotted Waveguide Arrays for Millimeter Wave Applications
Kunio SAKAKIBARA Jiro HIROKAWA Makoto ANDO Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/12/25
Vol. E79-B  No. 12  pp. 1765-1772
Type of Manuscript:  Special Section PAPER (Special Issue on Millimeter-wave Short-range Application Systems Technology)
Category: 
Keyword: 
slot antennaarray antennawaveguidehigh frequencymillimeter wave
 Summary | Full Text:PDF(849.2KB)

Periodic Boundary Condition for Evaluation of External Mutual Couplings in a Slotted Waveguide Array
Kunio SAKAKIBARA Jiro HIROKAWA Makoto ANDO Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/08/25
Vol. E79-B  No. 8  pp. 1156-1164
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
antennaarray antennawaveguideresonant slotmutual coupling
 Summary | Full Text:PDF(761.3KB)

A Single-Layer Power Divider for a Slotted Waveguide Array Using π-Junctions with an Inductive Wall
Tsukasa TAKAHASHI Jiro HIROKAWA Makoto ANDO Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/01/25
Vol. E79-B  No. 1  pp. 57-62
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
slotted waveguide arraypower divider,π-junctioninductive wall
 Summary | Full Text:PDF(503.7KB)

A Rotating Mode Radial Line Slot Antenna Fed by a Cavity Resonator
Seiji HOSONO Jiro HIROKAWA Makoto ANDO Naohisa GOTO Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/03/25
Vol. E78-B  No. 3  pp. 407-413
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
RLSArotational symmetryconcentric arrayrotating modecavity resonator
 Summary | Full Text:PDF(606KB)

A Linearly-Polarized Slotted Waveguide Array Using Reflection-Cancelling Slot Pairs
Kunio SAKAKIBARA Jiro HIROKAWA Makoto ANDO Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/04/25
Vol. E77-B  No. 4  pp. 511-518
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
antennaarray antennaslot arraywaveguidereflection-cancelling slot pair
 Summary | Full Text:PDF(623.8KB)

A Single-Layer Multiple-Way Power Divider for a Planar Slotted Waveguide Array
Jiro HIROKAWA Makoto ANDO Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1992/08/25
Vol. E75-B  No. 8  pp. 781-787
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
antennafeed circuitpower dividerwaveguide
 Summary | Full Text:PDF(568.7KB)

Waveguide π-Junction with an Inductive Post
Jiro HIROKAWA Makoto ANDO Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1992/03/25
Vol. E75-C  No. 3  pp. 348-351
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
power dividerwaveguide
 Summary | Full Text:PDF(260.1KB)