Hiroyuki ARAI


Multimodal Learning of Geometry-Preserving Binary Codes for Semantic Image Retrieval
Go IRIE Hiroyuki ARAI Yukinobu TANIGUCHI 
Publication:   
Publication Date: 2017/04/01
Vol. E100-D  No. 4  pp. 600-609
Type of Manuscript:  INVITED PAPER (Special Section on Award-winning Papers)
Category: 
Keyword: 
image retrievalmultimodal learningbinary coding
 Summary | Full Text:PDF(572.9KB)

FOREWORD
Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/10/01
Vol. E96-B  No. 10  pp. 2339-2339
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(100.6KB)

High Resolution 2-D DOA Estimation by Low-Cost Antenna Array Based on Synthesized Covariance Matrix via Antenna Switching
Yuki DOI Hiroki MORIYA Koichi ICHIGE Hiroyuki ARAI Takahiro HAYASHI Hiromi MATSUNO Masayuki NAKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/10/01
Vol. E96-A  No. 10  pp. 1962-1971
Type of Manuscript:  Special Section PAPER (Special Section on Sparsity-aware Signal Processing)
Category: 
Keyword: 
direction of arrival estimationarray signal processingsensor arrayantenna array
 Summary | Full Text:PDF(2.9MB)

Small Loop Antenna and Rectenna for RF Energy Harvesting in FM Bands
Akira NOGUCHI Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/10/01
Vol. E96-C  No. 10  pp. 1319-1321
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
RF energy harvestingloop antennahigh antenna input impedance
 Summary | Full Text:PDF(545.7KB)

A Remark on Spatial Correlation Coefficient Focusing on Propagation Channels for Evaluating Multi-Antenna Systems
Daisuke UCHIDA Takero ASAI Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/10/01
Vol. E96-B  No. 10  pp. 2506-2512
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012)
Category: Adaptive Array Antennas/MIMO
Keyword: 
spatial correlation coefficientMIMOpropagation channel
 Summary | Full Text:PDF(1.3MB)

MIMO Phase Control Relaying System
Atsuki MIZUNO Daisuke UCHIDA Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/01/01
Vol. E96-B  No. 1  pp. 340-343
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
MIMOrelayE-SDMAFCSIBERchannel capacity
 Summary | Full Text:PDF(268.1KB)

Improving Elevation Estimation Accuracy in DOA Estimation: How Planar Arrays Can Be Modified into 3-D Configuration
Hiroki MORIYA Koichi ICHIGE Hiroyuki ARAI Takahiro HAYASHI Hiromi MATSUNO Masayuki NAKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/10/01
Vol. E95-A  No. 10  pp. 1667-1675
Type of Manuscript:  Special Section PAPER (Special Section on Advances in Adaptive Signal Processing and Applications)
Category: DOA
Keyword: 
direction of arrival estimationarray signal processingsensor arraysantenna arrays
 Summary | Full Text:PDF(1.5MB)

Design of MIMO Antennas for Indoor Base Station and Mobile Terminal
Hiroyuki ARAI Daisuke UCHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/01/01
Vol. E95-B  No. 1  pp. 10-17
Type of Manuscript:  INVITED PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2010)
Category: 
Keyword: 
MIMOchannel capacitySNRcorrelationantenna
 Summary | Full Text:PDF(1.3MB)

A Low-Profile Dual-Polarized Directional Antenna for Enhancing Channel Capacity in Indoor MIMO Systems
Daisuke UCHIDA Hiroyuki ARAI Yuki INOUE Keizo CHO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/10/01
Vol. E93-B  No. 10  pp. 2570-2577
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: 
MIMOradiation patternpolarizationchannel capacitylow-profile antenna
 Summary | Full Text:PDF(1.6MB)

Estimating Number of People Using Calibrated Monocular Camera Based on Geometrical Analysis of Surface Area
Hiroyuki ARAI Isao MIYAGAWA Hideki KOIKE Miki HASEYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/08/01
Vol. E92-A  No. 8  pp. 1932-1938
Type of Manuscript:  Special Section PAPER (Special Section on Signal Processing)
Category: Image
Keyword: 
people number countingcrowd level estimationimage processingcamera calibration
 Summary | Full Text:PDF(1.1MB)

Efficient Heterodyne Digital Receiver with Direct RF-to-Digital Conversion for Software Defined Radio
Minseok KIM Takayuki MOTEKI Koichi ICHIGE Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/04/01
Vol. E92-A  No. 4  pp. 1056-1062
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Technologies Emerging Mainly from the 21st Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
multimodeRF to digital conversionsamplingsoftware defined radiocognitive radio
 Summary | Full Text:PDF(867.7KB)

A Transmitting and Receiving System Using a Basic One-Chip Microcomputer for Extremely Low Power Radio Communication
Shuhei SONODA Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/09/01
Vol. E91-B  No. 9  pp. 2883-2888
Type of Manuscript:  PAPER
Category: Devices/Circuits for Communications
Keyword: 
extremely low power radioone-chip microcomputershort range wireless system
 Summary | Full Text:PDF(334.9KB)

Adaptive Impedance Matching System Using FPGA Processor for Efficient Control Algorithm
Hirokazu OBA Minseok KIM Ryotaro TAMAKI Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8  pp. 1348-1355
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
antenna input impedanceautomatic matching systemFPGA
 Summary | Full Text:PDF(1.8MB)

High Resolution DOA Estimation Using Unwrapped Phase Information of MUSIC-Based Noise Subspace
Koichi ICHIGE Kazuhiko SAITO Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/08/01
Vol. E91-A  No. 8  pp. 1990-1999
Type of Manuscript:  Special Section PAPER (Special Section on Signal Processing)
Category: 
Keyword: 
direction of arrival estimationarray antennaMUSIC methodphase characteristics
 Summary | Full Text:PDF(581.4KB)

Resource and Performance Evaluations of Fixed Point QRD-RLS Systolic Array through FPGA Implementation
Yoshiaki YOKOYAMA Minseok KIM Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/04/01
Vol. E91-B  No. 4  pp. 1068-1075
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
systolic arrayQR decompositionRLSCORDICFPGA
 Summary | Full Text:PDF(730.2KB)

Evaluation of Digital-to-RF Upconversion Transmitter Using Harmonic Images of DAC Output
Minseok KIM Tatsuo FUJI Takafumi NAKABAYASHI Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/04/01
Vol. E91-B  No. 4  pp. 1215-1218
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
DACharmonicSDRsinc distortionup-conversionEVM
 Summary | Full Text:PDF(220.8KB)

A Free Access Mat by Tightly Coupled Patch Array for Short Range Wireless Access
Kunsun EOM Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/12/01
Vol. E90-C  No. 12  pp. 2254-2260
Type of Manuscript:  Special Section PAPER (Special Section on Recent Technologies for Microwave and Millimeter-wave Passive Devices)
Category: 
Keyword: 
free access matopen waveguidebody area networkpersonal area networkproximate couplingribbon-wire interconnect
 Summary | Full Text:PDF(660.1KB)

IEICE Transactions on Communications, Status Report
Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/03/01
Vol. E90-B  No. 3  pp. 439-439
Type of Manuscript:  REPORT
Category: 
Keyword: 
 Summary | Full Text:PDF(61.8KB)

High Resolution DOA Estimation Using Second-Order Differential of MUSIC Spectrum
Koichi ICHIGE Yoshihisa ISHIKAWA Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/03/01
Vol. E90-A  No. 3  pp. 546-552
Type of Manuscript:  Special Section PAPER (Special Section on Multimedia and Mobile Signal Processing)
Category: Communications
Keyword: 
direction of arrival estimationarray antennaMUSIC methodRoot-MUSIC method
 Summary | Full Text:PDF(572.7KB)

Beam-Space MUSIC DOA System Using Phase Shifter
Seung-Wook NAH Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/02/01
Vol. E90-B  No. 2  pp. 291-295
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
beamspace MUSICchip-sized phase shifterDOAquasi-orthogonalcorrelation coefficientmicrostrip array
 Summary | Full Text:PDF(337.3KB)

An Efficient Signed-Power-of-Two Term Allocation for Filter Coefficients in Digital Communication System
Koichi ICHIGE Hideaki MUNEMASA Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/12/01
Vol. E89-B  No. 12  pp. 3266-3268
Type of Manuscript:  Special Section LETTER (Special Section on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
digital modulationBER characteristicscosine rolloff filterSPT term
 Summary | Full Text:PDF(195.3KB)

Implementation of S-Parameter of Active Elements for FDTD Analysis
Naobumi MICHISHITA Takashi HIBINO Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/12/01
Vol. E89-C  No. 12  pp. 1843-1850
Type of Manuscript:  Special Section PAPER (Special Section on Emerging Microwave Techniques)
Category: Passive Circuits/Components
Keyword: 
FDTDS-parameteractive elementimplementation methodtunable band pass filter
 Summary | Full Text:PDF(578.1KB)

Accurate Source Number Detection Using Pre-Estimated Signal Subspace
Yoshihisa ISHIKAWA Koichi ICHIGE Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/12/01
Vol. E89-B  No. 12  pp. 3257-3265
Type of Manuscript:  Special Section PAPER (Special Section on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
source number detectionarray antennaAICMDLMUSIC methodbeamformer method
 Summary | Full Text:PDF(514.4KB)

Experimental Study of Jitter Effect on Digital Downconversion Receiver with Undersampling Scheme
Minseok KIM Aiko KIYONO Koichi ICHIGE Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/07/01
Vol. E88-D  No. 7  pp. 1430-1436
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1)
Category: Communications and Wireless Systems
Keyword: 
clock jitterundersamplingdownconversionDDCEVM
 Summary | Full Text:PDF(503.8KB)

Mutual Coupling Matrix Estimation and Null Forming Methods for MBF Antennas
Hiromitsu AOYAMA Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/06/01
Vol. E88-B  No. 6  pp. 2305-2312
Type of Manuscript:  Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation)
Category: 
Keyword: 
MBF antennaphase shiftermutual couplingnull formingphase-only algorithmperturbation
 Summary | Full Text:PDF(325.2KB)

Three Beam Switched Top Loaded Monopole Antenna
Naobumi MICHISHITA Yuji NAKAYAMA Hiroyuki ARAI Kohei MORI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/06/01
Vol. E88-B  No. 6  pp. 2291-2296
Type of Manuscript:  Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation)
Category: 
Keyword: 
unidirectional antennabeam switched antennatop loaded monopole antennaplanar antennafront to back ratio
 Summary | Full Text:PDF(518.8KB)

Small Antennas: Downsizing Techniques and Its Index Factor
Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/05/01
Vol. E88-B  No. 5  pp. 1801-1808
Type of Manuscript:  INVITED PAPER (Special Section on Recent Progress in Antennas and Propagation Researches--Selected Papers Translated from the IEICE Transactions on Communications (Japanese Edition)--)
Category: 
Keyword: 
small antennamatching circuitelectrical volumeradiation efficiencyWheeler method
 Summary | Full Text:PDF(263.6KB)

Mutual Coupling Characteristics of Choke Loaded Patch Array Antenna
Naobumi MICHISHITA Hiroyuki ARAI Yasuko KIMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/01/01
Vol. E88-B  No. 1  pp. 411-415
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
mutual couplingpatch array antennachokefront to back ratioside lobe levelrepeater
 Summary | Full Text:PDF(426.4KB)

Stub Loaded Dual-Frequency Microstrip Antenna for 2 GHz and 5 GHz Use
Shunsuke SAITO Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/12/01
Vol. E87-B  No. 12  pp. 3747-3752
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
antennadual-frequencymicrostripone point feedopen stub
 Summary | Full Text:PDF(708.6KB)

Implementation of FPGA Based Fast Unitary MUSIC DOA Estimator
Minseok KIM Koichi ICHIGE Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/09/01
Vol. E87-C  No. 9  pp. 1485-1494
Type of Manuscript:  Special Section PAPER (Special Section on Wave Technologies for Wireless and Optical Communications)
Category: Wireless Network System Performances
Keyword: 
adaptive antennasmart antennaFPGA implementationDOA estimationMUSICEVD
 Summary | Full Text:PDF(990.2KB)

Dielectric Phase Shifter (DPS) Using Contact-Less Connector
Hajime IZUMI Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/10/01
Vol. E86-B  No. 10  pp. 2982-2986
Type of Manuscript:  PAPER
Category: Communication Devices/Circuits
Keyword: 
dielectric phase shifterstrip conductorsliding dielectric substratecontact-less connectorFDTD method
 Summary | Full Text:PDF(424.1KB)

Cellular and PHS Base Station Antenna Systems
Hiroyuki ARAI Keizo CHO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/03/01
Vol. E86-B  No. 3  pp. 980-992
Type of Manuscript:  INVITED PAPER (Special Issue on Historical Review of Antenna Systems in Japan)
Category: 
Keyword: 
cellular systemphase shiftermulti band antennadiversity antennaPHSadaptive antenna
 Summary | Full Text:PDF(1.1MB)

A Fast Algebraic Approach to the Eigenproblems of Correlation Matrices in DOA Estimation
Koichi ICHIGE Masashi SHINAGAWA Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/02/01
Vol. E86-B  No. 2  pp. 865-869
Type of Manuscript:  LETTER
Category: Antenna and Propagation
Keyword: 
adaptive array antennaDOA estimationeigenproblemsMUSIC method
 Summary | Full Text:PDF(397.6KB)

Design of Jacobi EVD Processor Based on CORDIC for DOA Estimation with MUSIC Algorithm
Minseok KIM Koichi ICHIGE Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/12/01
Vol. E85-B  No. 12  pp. 2648-2655
Type of Manuscript:  Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
adaptive antennaFPGA implementationDOA estimationMUSICEVD
 Summary | Full Text:PDF(601.7KB)

FDTD Analysis of Low Profile Top Loaded Monopole Antenna
Huiling JIANG Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/11/01
Vol. E85-B  No. 11  pp. 2468-2475
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
FDTD methodnon-uniform meshtop loaded monopole antennaantenna's miniaturization
 Summary | Full Text:PDF(1.6MB)

Electromagnetically Coupled Power Divider Using Parasitic Element
Hajime IZUMI Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/10/01
Vol. E84-C  No. 10  pp. 1597-1601
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
power dividerparasitic elementFDTD methodelectromagnetically coupledDC-break
 Summary | Full Text:PDF(766.4KB)

Concept and Evaluation of a 2-D FDTD Formulation Based on Expanded Wave Equation Approach
Koichi ICHIGE Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/07/01
Vol. E84-C  No. 7  pp. 981-993
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
computational electromagneticsFDTD formulationwave equationMaxwell's equations
 Summary | Full Text:PDF(1.5MB)

Experiments of DOA Estimation by DBF Array Antenna at 2.6 GHz
Kohei MORI Yuki INOUE Koichi ICHIGE Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/07/01
Vol. E84-B  No. 7  pp. 1871-1875
Type of Manuscript:  Special Section LETTER (Special Issue on Adaptive Array Antenna Techniques for Advanced Wireless Communications)
Category: 
Keyword: 
DBF array antennaDOA estimationMUSIC algorithmestimation error
 Summary | Full Text:PDF(531.9KB)

Analysis of Computation Error in Antenna's Simulation by Using Non-Uniform Mesh FDTD
Huiling JIANG Hiroyuki ARAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/07/25
Vol. E83-B  No. 7  pp. 1544-1553
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
FDTD methodnon-uniform meshlinear interpolationquadratic interpolation
 Summary | Full Text:PDF(1.4MB)

Ribbon-Wire Interconnect Using Parasitic Element
Hajime IZUMI Hiroyuki ARAI Tatsuo ITOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/04/25
Vol. E82-C  No. 4  pp. 662-664
Type of Manuscript:  LETTER
Category: Microwave and Millimeter Wave Technology
Keyword: 
ribbon-wire bondinginterconnectDC-breakparasitic elementelectromagnetic couplingFDTD method
 Summary | Full Text:PDF(110.6KB)

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)

Improvement of the Isolation Characteristics of a Two-Layer Self-Diplexing Array Antenna Using a Circularly Polarized Ring Patch Antenna
Wataru CHUJO Masayuki FUJISE Hiroyuki ARAI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/07/25
Vol. E76-B  No. 7  pp. 755-758
Type of Manuscript:  Special Section LETTER (Special Section of Letters Selected from the 1992 IEICE Fall Conference and the 1993 IEICE Spring Conference)
Category: 
Keyword: 
antennas and propagationself-diplexing antennaarray antennaring patchcircular polarization
 Summary | Full Text:PDF(258.5KB)

A Two-Layer Self-Diplexing Antenna Using a Circularly Polarized Ring Patch Antenna
Wataru CHUJO Masayuki FUJISE Masayuki NAKANO Hiroyuki ARAI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1991/10/25
Vol. E74-B  No. 10  pp. 3261-3267
Type of Manuscript:  Special Section PAPER (Special Issue on Mobile Communication Antennas)
Category: 
Keyword: 
 Summary | Full Text:PDF(576.2KB)

Vehicular Diversity Flat Antenna at 900 MHz
Hiroyuki ARAI Hideki IWASHITA Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1991/10/25
Vol. E74-B  No. 10  pp. 3222-3226
Type of Manuscript:  Special Section PAPER (Special Issue on Mobile Communication Antennas)
Category: 
Keyword: 
 Summary | Full Text:PDF(369.3KB)

Microstrip Antenna on Pyramidal Ground Plane of Wide Beamwidth
Hiroyuki ARAI Yutaka IMAIZUMI Masahiro TOKI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/05/25
Vol. E73-E  No. 5  pp. 681-683
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
 Summary | Full Text:PDF(193.5KB)

A Coupling Coefficient of a Rectangular Waveguide Connected on a Overmoded Circular Waveguide
Ryota HIROSE Hiroyuki ARAI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/11/25
Vol. E72-E  No. 11  pp. 1219-1223
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
 Summary | Full Text:PDF(337.2KB)

An Analysis of Multi-Hole Directional Coupler
Hiroshi NISHIWAKI Hiroyuki ARAI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/09/25
Vol. E72-E  No. 9  pp. 979-983
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
 Summary | Full Text:PDF(378.8KB)

A UHF-TV Antenna Using Skeleton-Slot Array
Hiroyuki ARAI Katunori AOKI Kimio SAKURAI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/08/25
Vol. E71-E  No. 8  pp. 741-743
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
 Summary | Full Text:PDF(150.2KB)

A Hole Coupling of Directional Coupler on Overmoded Circular Waveguide
Hiroyuki ARAI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/09/25
Vol. E70-E  No. 9  pp. 807-808
Type of Manuscript:  LETTER
Category: Microwave and Millimeter Wave Technology
Keyword: 
 Summary | Full Text:PDF(101.1KB)

A Pill-Box Shaped Vacuum Window Connected with Circular Waveguides
Kunihito USUI Hiroyuki ARAI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/07/25
Vol. E70-E  No. 7  pp. 646-651
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
 Summary | Full Text:PDF(350.2KB)

An Approximate Analysis of a Multi-Slotted Directional Coupler for Monitoring the Output of Gyrotron
Hiroshi NISHIWAKI Hiroyuki ARAI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/04/25
Vol. E70-E  No. 4  pp. 253-254
Type of Manuscript:  Special Section LETTER (Special Issue: Papers from 1987 National Convention IEICE)
Category: Electro Magnetic Theory and Microwave Circuits
Keyword: 
 Summary | Full Text:PDF(140.9KB)

A Matching Circuit of a T-Shaped Ridge Waveguide Using Loaded Probes
Hiroyuki ARAI Naohisa GOTO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1986/11/25
Vol. E69-E  No. 11  pp. 1167-1168
Type of Manuscript:  LETTER
Category: Microwaves
Keyword: 
 Summary | Full Text:PDF(114.7KB)