Koichi HIRAYAMA


FOREWORD
Akira HIROSE Koichi HIRAYAMA 
Publication:   
Publication Date: 2019/01/01
Vol. E102-C  No. 1  pp. 1-2
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
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Efficient Analysis of Diffraction Grating with 10000 Random Grooves by Difference-Field Boundary Element Method
Jun-ichiro SUGISAKA Takashi YASUI Koichi HIRAYAMA 
Publication:   
Publication Date: 2017/01/01
Vol. E100-C  No. 1  pp. 27-36
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: 
Keyword: 
diffraction gratingrandom structurenumerical methodintegral equationboundary element method
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Efficient Scattering Analysis of Arbitrarily Shaped Local Defect in Diffraction Grating
Jun-ichiro SUGISAKA Takashi YASUI Koichi HIRAYAMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/01/01
Vol. E99-C  No. 1  pp. 76-80
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
diffraction gratingboundary-element methoddefectscatteringnumerical analysis
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A Study on Optimization of Waveguide Dispersion Property Using Function Expansion Based Topology Optimization Method
Hiroyuki GOTO Yasuhide TSUJI Takashi YASUI Koichi HIRAYAMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/07/01
Vol. E97-C  No. 7  pp. 670-676
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Simulation Techniques and Their Applications for Electronics)
Category: 
Keyword: 
function expansion methodtopology optimizationphotonic crystal waveguideslow-lightstructural filter
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Design Optimization of H-Plane Waveguide Component by Level Set Method
Koichi HIRAYAMA Yasuhide TSUJI Shintaro YAMASAKI Shinji NISHIWAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/05/01
Vol. E94-C  No. 5  pp. 874-881
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
design optimizationlevel set methodadjoint variable methodfinite element methodH-plane waveguide component
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Application of Topology Optimization to H-Plane Waveguide Component
Koichi HIRAYAMA Yasuhide TSUJI Tsuyoshi NOMURA Kazuo SATO Shinji NISHIWAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/02/01
Vol. E90-C  No. 2  pp. 282-287
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: Numerical Techniques, Computational Electromagnetic
Keyword: 
topology optimizationadjoint variable methodfinite element methodH-plane waveguide component
 Summary | Full Text:PDF(1.3MB)

FEM-Based Electromagnetic Wave Simulator Running on Some Platforms by Use of Java and a Commercial Tool
Koichi HIRAYAMA Naoto KUNIEDA Yoshio HAYASHI Masanori KOSHIBA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/11/01
Vol. E86-C  No. 11  pp. 2191-2198
Type of Manuscript:  Special Section PAPER (Special Issue on Analytical and Simulation Methods for Electromagnetic Wave Problems)
Category: 
Keyword: 
electromagnetic wave simulatorFEMJavaanisotropic PMLwaveguide discontinuityinverse problem
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Microwave Simulator Based on the Finite-Element Method by Use of Commercial Tools
Koichi HIRAYAMA Yoshio HAYASHI Masanori KOSHIBA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/07/01
Vol. E84-C  No. 7  pp. 905-913
Type of Manuscript:  Special Section PAPER (Special Issue on Techniques for Constructing Microwave Simulators--Design and Analysis Tools for Electromagnetic Fields, Circuits, and Antennas--)
Category: Electromagnetics Simulation Techniques
Keyword: 
microwave simulatorFEM3-D analysiswaveguide discontinuityeigenmode
 Summary | Full Text:PDF(1.2MB)