Výsledky vyhledávání - "Hidetoshi Chiba"

Optimal design of broadband radome using particle swarm optimization

Autor: Hidetoshi Chiba, Hiroaki Miyashita, Kazushi Nishizawa, Yoshihiko Konishi

Publikováno v: IEEJ Transactions on Electrical and Electronic Engineering. 7:343-349

This paper presents an optimal radome design using particle swarm optimization (PSO) which has recently drawn considerable attention in a wide range of applications. The frequency characteristics of the transmission coefficient for the radome are ado

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ff832a168ffd95bab8361f5ac326d0f1
https://doi.org/10.1002/tee.21738

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Efficient Implementation of Inner-Outer Flexible GMRES for the Method of Moments Based on a Volume-Surface Integral Equation

Autor: Hidetoshi Chiba, Yoshihiko Konishi, Toru Fukasawa, Hiroaki Miyashita

Publikováno v: IEICE Transactions on Electronics. :24-31

This paper presents flexible inner-outer Krylov subspace methods, which are implemented using the fast multipole method (FMM) for solving scattering problems with mixed dielectric and conducting object. The flexible Krylov subspace methods refer to a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d7db1e218fcc8e483bc208b15d75e034
https://doi.org/10.1587/transele.e94.c.24

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Acceleration of Flexible GMRES Using Fast Multipole Method for Implementation Based on Combined Tangential Formulation

Autor: Hiroaki Miyashita, Hidetoshi Chiba, Yoshihiko Konishi, Toru Fukasawa

Publikováno v: IEICE Transactions on Electronics. :1661-1668

In this study, we demonstrate an acceleration of flexible generalized minimal residual algorithm (FGMRES) implemented with the method of moments and the fast multipole method (FMM), based on a combined tangential formulation. For the implementation o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1871fd868704ad0bba871f551fd679a
https://doi.org/10.1587/transele.e94.c.1661

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Convergence Property of IDR(s) Method Implemented along with Method of Moments for Solving Large-Scale Electromagnetic Scattering Problems Involving Conducting Objects

Autor: Hidetoshi Chiba, Toru Fukasawa, Hiroaki Miyashita, Yoshihiko Konishi

Publikováno v: IEICE Transactions on Electronics. :198-205

In this paper, the performance of the induced dimension reduction (IDR) method implemented along with the method of moments (MoM) is described. The MoM is based on a combined field integral equation for solving large-scale electromagnetic scattering

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0031be99f33af1318f465138951552f8
https://doi.org/10.1587/transele.e94.c.198

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Acceleration of Wavelet-based Method of Moments for Periodic Structures

Autor: Kazushi Nishizawa, Hiroaki Miyashita, Hidetoshi Chiba, Yoshihiko Konishi

Publikováno v: IEEJ Transactions on Fundamentals and Materials. 129:729-735

An alternative definition of the wavelet transform matrix used for the sparsification of the moment matrix in the method of moments (MoM) is developed. In scattering problems, if the scatterer is a finite periodic structure, the moment matrix has a p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::20565de97661908426324ff386ba1e96
https://doi.org/10.1541/ieejfms.129.729

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Convergence property of IDR variant methods implemented with method of moments

Autor: Yoshihiko Konishi, Toru Fukasawa, Hidetoshi Chiba, Hiroaki Miyashita

Publikováno v: 2013 IEEE Antennas and Propagation Society International Symposium (APSURSI).

In this study, we investigate the performance of the variants of the induced dimension reduction (IDR) in large-scale electromagnetic scattering problems. Comparative numerical experiments, using IDR(s), GIDR(s, L), and ML(s)BiCGSTAB reveal that GIDR

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69a64a47b84129f50fc239e5b5a39bb6
https://doi.org/10.1109/aps.2013.6711430

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Convergence property of inner-outer flexible GMRES for solving electromagnetic scattering problems with method of mements

Autor: Toru Fukasaswa, Hidetoshi Chiba, Yoshihiko Konishi, Hiroaki Miyashita

Publikováno v: 2010 IEEE Antennas and Propagation Society International Symposium.

This paper presents inner-outer flexible GMRES method [1], which is implemented using the fast multipole method (FMM) for solving scattering problems with mixed dielectric and conducting object. To obtain the maximum efficiency of the inner-outer met

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50ca529ec0a1c576e5e49a1a17523dd1
https://doi.org/10.1109/aps.2010.5562110

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Theoretical and experimental investigation of plasma antenna characteristics on the basis of gaseous collisionality and electron density

Autor: Teruki Naito, Daiki Taniguchi, Kazuo Yamamoto, Shinya Kitagawa, Tai Tanaka, Shingo Yamaura, Hidetoshi Chiba, Kazuhiro Takahagi, Hayato Ogino

Publikováno v: Japanese Journal of Applied Physics. 54:016001

This paper reports plasma antenna characteristics investigated theoretically and experimentally, on the basis of the plasma parameters: gaseous collisionality and electron density. The antenna structure is a basic quarter-wavelength monopole antenna

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::92ff4d293251d263d5cf8bbb79164360
https://doi.org/10.7567/jjap.54.016001

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