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2015 Computational Electromagnetics International Workshop (CEM)最新文献

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The mixed spectral element method: a novel approach to remove zero spurious modes in electromagnetics 混合谱元法:一种消除电磁零杂散模的新方法
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237438
Na Liu, Wei Jiang, Yueqin Huang, Q. Liu
{"title":"The mixed spectral element method: a novel approach to remove zero spurious modes in electromagnetics","authors":"Na Liu, Wei Jiang, Yueqin Huang, Q. Liu","doi":"10.1109/CEM.2015.7237438","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237438","url":null,"abstract":"In this paper, we propose a novel mixed spectral element method (mixed SEM) to remove such zero spurious modes and significantly improve the numerical solutions of the Maxwell eigenvalue problem. We will demonstrate this mixed SEM with the applications in waveguides and cavities. In order to suppress the zero spurious modes, the divergence-free condition (i.e., Gauss' law) must be enforced in the spectral element. The novel high-order mixed SEM is proposed for the analysis of anisotropic, lossy, and open waveguides and cavities. It utilizes the edge-based curl-conforming Gauss-Lobatto-Legendre (GLL) polynomials to approximate the tangential vector of the electric field; and for waveguide problems, it uses the nodal-based scalar GLL basis functions to discretize its longitudinal component to obtain the highly accurate simulations.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116753593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An MPIxOpenMP implementation of the hierarchical parallelization of MLFMA MLFMA分层并行化的MPIxOpenMP实现
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237426
Mert Hidayetoglu, L. Gurel
{"title":"An MPIxOpenMP implementation of the hierarchical parallelization of MLFMA","authors":"Mert Hidayetoglu, L. Gurel","doi":"10.1109/CEM.2015.7237426","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237426","url":null,"abstract":"We propose an MPIxOpenMP parallelization scheme based on the hierarchical partitioning strategy for the multilevel fast multipole algorithm. The parallelization scheme reduces data duplications via sharing data structures among processing cores. Therefore, this scheme can employ hundreds of cores efficiently without requiring extra memory.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"476 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116168260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Analysis of scattering from perfect electric conducting cylinders by spectral element method 用谱元法分析完美导电圆柱体的散射
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237421
I. Mahariq, Ibrahim Arpaci, M. Kuzuoglu
{"title":"Analysis of scattering from perfect electric conducting cylinders by spectral element method","authors":"I. Mahariq, Ibrahim Arpaci, M. Kuzuoglu","doi":"10.1109/CEM.2015.7237421","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237421","url":null,"abstract":"In this paper, the governing frequency-domain equations for the scattered field from perfect electric conducting cylinders are solved by the spectral element method (SEM) for both circular and square cylinders. Domain truncation is performed by the perfectly matched layer in two dimensions.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124165838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On-chip antenna design for UWB applications 用于超宽带应用的片上天线设计
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237413
Anıl Özdemirli, Mustafa Murat Bilgiç, Bora Tar, K. Yeğin, U. Çilingiroğlu
{"title":"On-chip antenna design for UWB applications","authors":"Anıl Özdemirli, Mustafa Murat Bilgiç, Bora Tar, K. Yeğin, U. Çilingiroğlu","doi":"10.1109/CEM.2015.7237413","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237413","url":null,"abstract":"On-chip antenna design in standard complementary metal-oxide-semiconductor (CMOS) process is very difficult due to high inherent loss in silicon substrate. Often, the top-most layer is utilized for antenna placement and remaining layers are reserved for other electronic circuits. Although it is not possible to overcome the effects of substrate loss which results in low antenna efficiency, it is possible to make use of remaining layers to reduce the antenna loading from low-resistivity silicon. In this study, we designed and prototyped an impulse generator circuit, transmitter circuit and a loop antenna on the same silicon substrate. The prototype is built through Europractice UMC L180 mixed/RF technology. Antenna and oscillator have been tested and characterized with measurements and simulations.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124028605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A separated potential integral equation for low-frequency PMCHWT 低频PMCHWT的分离势积分方程
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237430
A. Das, D. Gope
{"title":"A separated potential integral equation for low-frequency PMCHWT","authors":"A. Das, D. Gope","doi":"10.1109/CEM.2015.7237430","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237430","url":null,"abstract":"The conventional PMCHWT method for solving multi-region dielectric problems at low frequencies gives rise to an ill-conditioned method of moments matrix when solved using the traditional RWG basis. This leads to problems in iterative convergence in a fast solver framework, namely large iteration count or inaccuracies in the solution. To alleviate the problem, quasi-Helmholtz decomposition by loop-tree or loopstar bases is often performed. However, it is a time-inefficient process to extract loops from complex real-world structures containing multiple holes and handles. To avoid this bottleneck, a separated potential integral equation formulation is proposed (SPIE-PMCHWT) in this paper for solving low frequency illconditioning of PMCHWT problems.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125583228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A generalized uniform theory of diffraction method for complex illumination sources accounting for multiply-diffracted rays 考虑多重衍射射线的复杂光源衍射方法的广义均匀理论
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237437
G. Karagounis, D. De Zutter, D. Ginste
{"title":"A generalized uniform theory of diffraction method for complex illumination sources accounting for multiply-diffracted rays","authors":"G. Karagounis, D. De Zutter, D. Ginste","doi":"10.1109/CEM.2015.7237437","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237437","url":null,"abstract":"A new formalism is presented that generalizes the use of the uniform theory of diffraction (UTD) to arbitrary illumination sources. The formalism returns the field in terms of a multipole expansion inside an extended observation region. When multiple UTD canonical objects are present, the multiply-diffracted rays can conveniently be superimposed. As an example, the scattering of a higher-order Hermite-Gaussian beam at a perfectly electrically conducting slit is examined.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133378856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wireless power transfer via spiral metamaterials 通过螺旋超材料实现无线电力传输
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237432
A. Lalas, N. Kantartzis, T. Tsiboukis
{"title":"Wireless power transfer via spiral metamaterials","authors":"A. Lalas, N. Kantartzis, T. Tsiboukis","doi":"10.1109/CEM.2015.7237432","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237432","url":null,"abstract":"An elaborate evaluation regarding the efficiency of a novel wireless power transfer system, which incorporates spiral split-ring resonators as its fundamental blocks, is systematically conducted in this paper. The proposed configuration unveils a remarkable improvement of the power delivered to the load, as verified by several numerical data.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129806210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the non-conformal domain decomposition algorithms of FE-BI-MLFMA for 3-D electromagnetic scattering and radiation problems 三维电磁散射与辐射问题的FE-BI-MLFMA非共形区域分解算法
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237418
Hong-Wei Gao, Ming-lin Yang, X. Sheng
{"title":"On the non-conformal domain decomposition algorithms of FE-BI-MLFMA for 3-D electromagnetic scattering and radiation problems","authors":"Hong-Wei Gao, Ming-lin Yang, X. Sheng","doi":"10.1109/CEM.2015.7237418","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237418","url":null,"abstract":"The non-conformal domain decomposition algorithms of the hybrid finite element-boundary integral-multilevel fast multipole algorithm are presented for computing large electromagnetic scattering and radiation problems. The numerical performance of different transmission conditions between finite element method (FEM) subdomains, and FEM and boundary integral (BI) domains is studied in the paper. It is found that the Dirichlet transmission condition employed on the interface between FEM and BI domains has faster convergence than the Robin-type transmission condition. Furthermore, the cement-element-based dual-primal finite element tearing and interconnecting (FETI-DP) domain decomposition method has faster convergence than the Lagrange-multiplier-based FETI-DP method under the FE-BI system.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121803317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A miniature implantable microstrip antenna design for dual-band biotelemetry operations 一种用于双频生物遥测操作的微型植入式微带天线设计
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237439
Erdem Uras, M. Ucar, A. Sondas
{"title":"A miniature implantable microstrip antenna design for dual-band biotelemetry operations","authors":"Erdem Uras, M. Ucar, A. Sondas","doi":"10.1109/CEM.2015.7237439","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237439","url":null,"abstract":"In this study, an implantable microstrip sandwiched (IMS) antenna for dual-band biotelemetry communication is proposed. The proposed antenna is comprised of a spiral shaped radiating element and a bended microstrip line sections. The radiating element is sandwiched between two thin substrates backed by a rectangular ground plane (GP). In addition, a shorting pin (SP) which connects radiating element to GP is used for miniaturization purpose. By optimizing the proposed antenna in terms of its size, feeding and SP position, the IMS antenna with only 10.6x10x1.27 mm3 offers a dual band performance (VSWR<;2) covering medical implant communication services (MICS) 402{405 MHz) and industrial, scientific and medical (ISM) 2.4(2.48 GHz) bands. It is numerically demonstrated that the proposed implant antenna offers 50% and 29% impedance bandwidth at the designated ISM and MICS frequency bands respectively. In the paper, numerical results for the proposed design are presented.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125678451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Fast computational techniques applied to numerical modeling of RFX-mod fusion device 快速计算技术在RFX-mod聚变装置数值模拟中的应用
2015 Computational Electromagnetics International Workshop (CEM) Pub Date : 2015-07-01 DOI: 10.1109/CEM.2015.7237427
D. Abate, L. Barbato, B. Carpentieri, G. Marchiori, N. Marconato, S. Mastrostefano, Stefano Ventre, F. Villone
{"title":"Fast computational techniques applied to numerical modeling of RFX-mod fusion device","authors":"D. Abate, L. Barbato, B. Carpentieri, G. Marchiori, N. Marconato, S. Mastrostefano, Stefano Ventre, F. Villone","doi":"10.1109/CEM.2015.7237427","DOIUrl":"https://doi.org/10.1109/CEM.2015.7237427","url":null,"abstract":"This paper presents the application of fast computational techniques to the RFX-mod fusion device. The input-output transfer functions are computed.","PeriodicalId":409699,"journal":{"name":"2015 Computational Electromagnetics International Workshop (CEM)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133705308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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