International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications最新文献

Modelling and B1 Shim Analysis of 16-Element Transceiver Array at 7 T. 7 T时16元收发器阵列的建模与B1 - Shim分析。

International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications Pub Date : 2019-09-01 Epub Date: 2019-10-24 DOI: 10.1109/iceaa.2019.8879006

Xin Li, Haoda Gong, Jullie W Pan, Hoby P Hetherington, Joseph V Rispoli

引用次数: 0

Multipath Characterisation of the MeerKAT Core Site MeerKAT核心站点的多路径表征

International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications Pub Date : 2017-09-01 DOI: 10.1109/ICEAA.2017.8065408

T. Phiri, D. Davidson, P. G. Wiid

引用次数: 2

Application of sfie for lossy dielectric bodies 5在损耗介质体中的应用

International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications Pub Date : 2017-09-01 DOI: 10.1109/ICEAA.2017.8065367

S. Ozdemir, A. Koksal

{"title":"Application of sfie for lossy dielectric bodies","authors":"S. Ozdemir, A. Koksal","doi":"10.1109/ICEAA.2017.8065367","DOIUrl":"https://doi.org/10.1109/ICEAA.2017.8065367","url":null,"abstract":"In this study, a new method, Shifted Frequency Internal Equivalence (SFIE) is used for calculating the electromagnetic scattering from arbitrarily shaped 3D lossy bodies in a wide frequency range for the first time. The novelty of the method lies in the application of Shifted Frequency Internal Equivalence (SFIE) for 3D electromagnetic problems. Two different equivalence equations are obtained using equivalent volume and surface sources with operating frequency ω and shifted frequency ω 0 . Most of the equations are formed using the fixed, shifted frequency, and these are coupled with the equations obtained for outer equivalence using the operating frequency ω, in order to have a solvable matrix equation. The Method of Moments (MoM) is chosen for the solution of equivalence equations because of simplicity although other numerical methods, e.g. Finite Element Method (FEM), iterative methods can be selected. The EM scattering from dielectric bodies with complex permittivity is investigated in a frequency sweep analysis. The solution obtained with SFIE is compared with Volume Integral Equation (VIE) solved using the classical MoM, simulation software and Mie scattering theory results. The improvements in CPU time compared to MoM is also presented.","PeriodicalId":89936,"journal":{"name":"International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications","volume":"116 1","pages":"788-791"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75483093","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 comparison of full pattern and response feature based modeling of antenna radiation patterns 基于全方向图和响应特征的天线辐射方向图建模比较

International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications Pub Date : 2017-09-01 DOI: 10.1109/ICEAA.2017.8065404

D. Villiers

引用次数: 1

Unified framework for an a posteriori error analysis of non-standard finite element approximations of H(curl)-elliptic problems H(旋度)椭圆问题非标准有限元近似后验误差分析的统一框架

International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications Pub Date : 2009-11-10 DOI: 10.1515/JNUM.2009.003

C. Carstensen, R. Hoppe

{"title":"Unified framework for an a posteriori error analysis of non-standard finite element approximations of H(curl)-elliptic problems","authors":"C. Carstensen, R. Hoppe","doi":"10.1515/JNUM.2009.003","DOIUrl":"https://doi.org/10.1515/JNUM.2009.003","url":null,"abstract":"Abstract A unified framework for a residual-based a posteriori error analysis of standard conforming finite element methods as well as non-standard techniques such as nonconforming and mixed methods has been developed in [Carstensen, Numer. Math. 100: 617 – 637, 2005, Carstensen, Gudi, and Jensen, A unifying theory of a posteriori error control for discontinuous Galerkin FEM, Department of Mathematics, Humboldt University of Berlin, 2008, Carstensen and Hoppe, J. Numer. Math. 13: 19 – 32, 2005, Carstensen and Hu, Numer. Math. 107: 473 – 502, 2007, Carstensen, Hu, and Orlando, SIAM J. Numer. Anal. 45: 68 – 82, 2007]. This paper provides such a framework for an a posteriori error control of nonconforming finite element discretizations of H(curl)-elliptic problems as they arise from low-frequency electromagnetics. These nonconforming approximations include the interior penalty discontinuous Galerkin (IPDG) approach considered in [Houston, Perugia, and Schötzau, SIAM J. Numer. Anal. 42: 434 – 459, 2004, Houston, Perugia, and Schötzau, IMA J. Numer. Anal. 27: 122 – 150, 2007], and mortar edge element approximations studied in [Belgacem, Buffa, and Maday, SIAM J. Numer. Anal. 39: 880 – 901, 2001, Hoppe, East-West J. Numer. Math. 7: 159 – 173, 1999, Hoppe, Adaptive domain decomposition techniques in electromagnetic field computation and electrothermomechanical coupling problems: Springer, 2002, Hoppe, J. Comp. Appl. Math. 168: 245 – 254, 2004, Hoppe, Contemporary Math. 383, 63 – 111, 2005, Rapetti, Buffa, Maday, and Bouillault, COMPEL 19: 332 – 340, 2000, Xu and Hoppe, SIAM J. Numer. Anal. 43: 1276 – 1294, 2005].","PeriodicalId":89936,"journal":{"name":"International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications","volume":"182 1","pages":"27 - 44"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75426731","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: 16

Shaping and resizing of multifed slot radiators used in conformal microwave antenna arrays for hyperthermia treatment of large superficial diseases. 适形微波天线阵列中用于大面积表面疾病热疗的多馈槽散热器的成型和尺寸调整。

International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications Pub Date : 2009-01-01 DOI: 10.1109/ICEAA.2009.5297299

Paolo F Maccarini, Kavitha Arunachalam, Titania Juang, Valeria De Luca, Sneha Rangarao, Daniel Neumann, Carlos Daniel Martins, Oana Craciunescu, Paul R Stauffer

{"title":"Shaping and resizing of multifed slot radiators used in conformal microwave antenna arrays for hyperthermia treatment of large superficial diseases.","authors":"Paolo F Maccarini, Kavitha Arunachalam, Titania Juang, Valeria De Luca, Sneha Rangarao, Daniel Neumann, Carlos Daniel Martins, Oana Craciunescu, Paul R Stauffer","doi":"10.1109/ICEAA.2009.5297299","DOIUrl":"https://doi.org/10.1109/ICEAA.2009.5297299","url":null,"abstract":"<p><p>It has been recently shown that chestwall recurrence of breast cancer and many other superficial diseases can be successfully treated with the combination of radiation, chemotherapy and hyperthermia. Conformal microwave antenna array for hyperthermia treatment of large area superficial diseases can significantly increase patient comfort while at the same time facilitate treatment of larger and more irregularly shaped disease. A large number of small efficient antennas is preferable for improved control of heating, as the disease can be more accurately contoured and the lower power requirement correlates with system reliability, linearity and reduced cost. Thus, starting from the initially proposed square slot antennas, we investigated new designs for multi-fed slot antennas of several shapes that maximize slot perimeter while reducing radiating area, thus increasing antenna efficiency. Simulations were performed with commercial electromagnetic simulation software packages (Ansoft HFSS) to demonstrate that the antenna size reduction method is effective for several dual concentric conductor (DCC) aperture shapes and operating frequencies. The theoretical simulations allowed the development of a set of design rules for multi-fed DCC slot antennas that facilitate conformal heat treatments of irregular size and shape disease with large multi-element arrays. Independently on the shape, it is shown that the perimeter of 10cm at 915 MHz delivers optimal radiation pattern and efficiency. While the maximum radiation is obtained for a circular pattern the rectangular shape is the one that feels more efficiently the array space.</p>","PeriodicalId":89936,"journal":{"name":"International Conference on Electromagnetics in Advanced Applications : proceedings : ICEAA. International Conference on Electromagnetics in Advanced Applications","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/ICEAA.2009.5297299","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31967144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6