2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)最新文献_第4页

Asymptotic Analysis of Chirped Gaussian Pulse Propagation in a Metamaterial Medium 啁啾高斯脉冲在超材料介质中的渐近分析

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/ICEAA.2019.8879316

Constantinos M. Balictsis

引用次数: 0

Statistical Characteristics of a Radiowave Propagating in a Multiscale Randomly Inhomogeneous Plasma 无线电波在多尺度随机非均匀等离子体中传播的统计特性

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/ICEAA.2019.8879233

M. Tinin, S. Knizhin

引用次数: 1

Detecting Failed Elements in an Arbitrary Antenna Array using Machine Learning 利用机器学习检测任意天线阵列中的失效元件

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/ICEAA.2019.8879067

L. de Lange, D. Ludick, T. Grobler

引用次数: 5

Effect of finite ground plane on irregular arrays with metallic elements 有限地平面对金属元素不规则阵列的影响

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/ICEAA.2019.8879267

Thomas Pairon, J. Cavillot, S. Karki, C. Craeye

引用次数: 0

Electrostatic and thermal control of Dyakonov–Tamm waves guided by a graphene-coated structurally chiral medium 石墨烯包覆结构手性介质引导Dyakonov-Tamm波的静电和热控制

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/ICEAA.2019.8879133

F. Chiadini, V. Fiumara, A. Scaglione, A. Lakhtakia

引用次数: 0

A Dual-Band Frequency Selective Rasorber Design 一种双频选频器设计

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/ICEAA.2019.8879158

Hengxu Wang, Jiahui Qin, T. Jiang, Bin Cao

引用次数: 2

An Adaptive Discontinuous Galerkin Time-Domain Method for Multiphysics and Multiscale Simulations 多物理场多尺度模拟的自适应间断伽辽金时域方法

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/ICEAA.2019.8879292

Su Yan, Jiwei Qian, Jianming Jin

{"title":"An Adaptive Discontinuous Galerkin Time-Domain Method for Multiphysics and Multiscale Simulations","authors":"Su Yan, Jiwei Qian, Jianming Jin","doi":"10.1109/ICEAA.2019.8879292","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879292","url":null,"abstract":"Numerical simulations of multiphysics problems require not only an accurate solution of all the physical phenomena involved, but also an accurate representation of inter-physical couplings. As a natural consequence of the mutual couplings between different physics, most multiphysics problems are also multiscale problems. They can be geometrical, spatial, and temporal multiscales, and can span over several orders of magnitude in terms of the respective characteristics. To accurately simulate such a multiphysics and multiscale problem, it is essential that the multiscale couplings between different physics are properly modeled and simulated. In a numerical simulation, one can use either finer geometrical meshes or higher polynomial orders to resolve a smaller spatial feature, known as the $h$ - and $p$-refinement, respectively. Unfortunately, since the multiphysics coupling is a dynamic process, the small spatial features of the physics can evolve and propagate in both space and time. In this case, a static refinement does not work well and the $h$ - or $p$-refinement has to be performed in a dynamic fashion, which results in a numerical system with a not only large but also time-varying size. As a result, the application of $h$ - or $p$-refinement becomes extremely expensive and impractical to apply.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129176693","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

Azimuthally Magnetized Circular Ferrite-Dielectric Waveguide: Condition for Phase Shifter Operation 方位角磁化环形铁氧体介质波导:移相器工作的条件

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/ICEAA.2019.8879122

M. Georgieva-Grosse, G. Georgiev

引用次数: 1

Integral Equation Analysis of Multiport H-plane Devices Containing Arbitrarily Shaped Metallic and/or Dielectric Posts by Using Two-Dimensional Cavity and Parallel Plate Green's Functions 利用二维空腔和平行板格林函数分析含任意形状金属柱或介电柱的多端口h平面器件的积分方程

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/ICEAA.2019.8879151

F. Quesada, Celia Gómez, Alejandro Álvarez Melcón, V. Boria, M. Guglielmi

{"title":"Integral Equation Analysis of Multiport H-plane Devices Containing Arbitrarily Shaped Metallic and/or Dielectric Posts by Using Two-Dimensional Cavity and Parallel Plate Green's Functions","authors":"F. Quesada, Celia Gómez, Alejandro Álvarez Melcón, V. Boria, M. Guglielmi","doi":"10.1109/ICEAA.2019.8879151","DOIUrl":"https://doi.org/10.1109/ICEAA.2019.8879151","url":null,"abstract":"In this work, we propose a novel integral equation formulation that allows the efficient analysis of multiport H-plane microwave devices including arbitrarily shaped metallic and/or dielectric posts. The system of integral equation that models a given H-plane microwave device is written in terms of mixed-potentials, whose unknowns are equivalent electric $vec{J}$ or magnetic $vec{M}$ surface current densities. These unknown currents are defined, after the aplication of the Surface Equivalence Principle, on the discontinuities between the input and output waveguide ports and a rectangular cavity, as well as on the dielectric and/or metallic posts contour. The, so called, original problem is split into several equivalent problems, defined in different regions, that are coupled each other by the aforementioned unknown surface current densities. The kernel of the integral equation is expressed making used of Green's functions that takes into account the boundary conditions corresponding to the region where the considered equivalent problem is defined; namely, parallel plate Green's functions, 2D rectangular cavity Green's functions or unbounded medium Green's functions. Series acceleration techniques such as the Kummer's transformation and the Ewald method has been employed in order to improve the efficiency when computing the parallel plate and 2D rectangular cavity Green's functions. Two simulation examples are presented, comparing the results provided by the novel integral equation technique to those retrieved with a finite elements software tool (ANSYS HFSS). A very good agreement between both method has been obtained, showing the accuracy and efficiency of the technique proposed in this contribution.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124208495","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

The role of low and high frequency asymptotes when deriving physical bounds for electromagnetically functional surfaces 在推导电磁功能表面的物理边界时，低频和高频渐近线的作用

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI: 10.1109/iceaa.2019.8879111

D. Sjöberg

{"title":"The role of low and high frequency asymptotes when deriving physical bounds for electromagnetically functional surfaces","authors":"D. Sjöberg","doi":"10.1109/iceaa.2019.8879111","DOIUrl":"https://doi.org/10.1109/iceaa.2019.8879111","url":null,"abstract":"Surfaces can be designed to have intentional electromagnetic functionality, for instance absorption, frequency or polarization selectivity, focusing, pulse shaping etc. These functions are often characterized in terms of some performance parameter like minimum acceptable absorption level, and the bandwidth over which this performance is achieved. Based on the physical principles of linearity, passivity, and time translational invariance, it can often be shown that the product of performance and bandwidth is bounded by a number which can be computed from knowledge of the low and high frequency asymptotes of the electromagnetic function in question. In this contribution, we show how these asymptotes (in particular the low frequency limit) can be computed or estimated for a number of canonical structures, and highlight the fundamental difficulties that arise when simplified models like PEC boundary conditions can not be applied. For instance, to compute the low frequency reflection and transmission coefficients for a perforated infinite periodic structure with finite conductivity proves to require significantly different local problems than the corresponding PEC structure, due to the partial transmission of electromagnetic waves in the static limit.","PeriodicalId":237030,"journal":{"name":"2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"273 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121413005","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