Jiro HIROKAWA


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)

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 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 (378.3KB)

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)

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)

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)

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 (318.8KB)

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)

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)

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)

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 (851.8KB)

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 (914.7KB)

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 (843.1KB)

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 (990.3KB)

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)

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 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 (788KB)

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 (716.5KB)

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)

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 (949.8KB)

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 (1004.4KB)

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 (519.8KB)

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 (551.9KB)

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 (784.5KB)

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 (893.2KB)

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
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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
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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
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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: 1999/07/20
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
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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: 1999/01/20
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
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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: 1998/06/20
Vol. E81-B  No. 6  pp. 1248-1254
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
slotted waveguide arraypower dividerfeed circuitτ-junction
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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: 1998/03/20
Vol. E81-B  No. 3  pp. 668-673
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
parasitic dipoleinclined slotcircular polarizationnarrow-wallwaveguide
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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: 1997/08/20
Vol. E80-B  No. 8  pp. 1264-1272
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
single layerpolarization converterdipole arraynarrow-wallslotwaveguide
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Single-Layer Slotted Waveguide Arrays for Millimeter Wave Applications
Kunio SAKAKIBARA  Jiro HIROKAWA  Makoto ANDO  Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/12/20
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
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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: 1996/08/20
Vol. E79-B  No. 8  pp. 1156-1164
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
antennaarray antennawaveguideresonant slotmutual coupling
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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: 1996/01/20
Vol. E79-B  No. 1  pp. 57-62
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
slotted waveguide arraypower divider,π-junctioninductive wall
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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: 1995/03/20
Vol. E78-B  No. 3  pp. 407-413
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
RLSArotational symmetryconcentric arrayrotating modecavity resonator
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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: 1994/04/20
Vol. E77-B  No. 4  pp. 511-518
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
antennaarray antennaslot arraywaveguidereflection-cancelling slot pair
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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: 1992/08/20
Vol. E75-B  No. 8  pp. 781-787
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
antennafeed circuitpower dividerwaveguide
  Summary |  Full Text:PDF (568.8KB)

Waveguide π-Junction with an Inductive Post
Jiro HIROKAWA  Makoto ANDO  Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1992/03/20
Vol. E75-C  No. 3  pp. 348-351
Type of Manuscript: LETTER
Category: Electromagnetic Theory
Keyword: 
power dividerwaveguide
  Summary |  Full Text:PDF (261.2KB)