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2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)最新文献

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On the geometry of the Square Kilometer Array Mid-Frequency Aperture Array 平方公里阵中频孔径阵的几何特性研究
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297172
A. El-Makadema, Yongwei Zhang, Ming Yang, A. Brown
{"title":"On the geometry of the Square Kilometer Array Mid-Frequency Aperture Array","authors":"A. El-Makadema, Yongwei Zhang, Ming Yang, A. Brown","doi":"10.1109/ICEAA.2015.7297172","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297172","url":null,"abstract":"This paper looks at the performance limits of reducing the total number of elements in a tightly coupled dense aperture arrays for radio astronomical applications particularly the case of the SKA-MFAA. It shows that by using a combination of triangular grid configuration and random thinning, a reduction of up to 20% of the total number of elements can be achieved without any significant sacrifice on performance. This has a major impact on reducing the cost since the number of elements is a main cost driver in such large array systems. The results are demonstrated through full wave simulation of the ORA array which is a major candidate for the SKA-MFAA.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130582797","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
Self-resonant frequencies, standing waves, and impedance behavior of air-core helical solenoidal coil 空心螺旋螺线管线圈的自谐振频率、驻波及阻抗特性
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297326
C. M. de Miranda, S. F. Pichorim
{"title":"Self-resonant frequencies, standing waves, and impedance behavior of air-core helical solenoidal coil","authors":"C. M. de Miranda, S. F. Pichorim","doi":"10.1109/ICEAA.2015.7297326","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297326","url":null,"abstract":"Microwave theory should be used anytime the electrical length of a circuit is comparable with the wavelength of the electromagnetic signal. In this sense, an air-core single-layer solenoid is a critical component, in which this condition is very often attained and lumped element theory is not valid. Besides the electromagnetic analysis of the solenoid helix not be an easy task, for many cases of interest some assumptions and conditions simplify the analysis. In this paper it is shown that the air-core solenoid coil can be treated as a lossless transmission line, or more precisely, as a helical transmission line, and that its impedance behavior and self-resonant frequencies can be found with this theory. Also two new configurations are here presented: a coil with both sides open and a coil with both sides short-circuited. It is shown that, in both configurations, the coils have similar behavior and same resonant frequencies. Simulations and measurements are conducted to validate the presented theory.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120967375","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
2D periodic structure featuring negative group velocity of bloch waves 布洛赫波群速度为负的二维周期结构
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297402
A. De Sabata, L. Matekovits, A. Silaghi, U. Rohde, M. Silaghi
{"title":"2D periodic structure featuring negative group velocity of bloch waves","authors":"A. De Sabata, L. Matekovits, A. Silaghi, U. Rohde, M. Silaghi","doi":"10.1109/ICEAA.2015.7297402","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297402","url":null,"abstract":"A 2D, volumetric (i.e., non-planar), structure consisting of two dielectric layers, loaded by various metal inclusions on multiple-periodic grids and closed by two confining metal planes is introduced in view of advanced dispersion engineering related applications. Full-wave simulation has been used to demonstrate that, for axial propagation, the structure presents (i) a large electromagnetic band-gap and (ii) two modes that have anti-parallel phase and group velocities in different frequency bands where they do not interact with other modes.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"267 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120990956","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
The transition radiation in the anisotropic magneto dielectric plate in a waveguide at passing of a charged particle perpendicular to the waveguide axis 垂直于波导轴的带电粒子通过波导中各向异性磁介质板时的跃迁辐射
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297060
E. Gevorkyan
{"title":"The transition radiation in the anisotropic magneto dielectric plate in a waveguide at passing of a charged particle perpendicular to the waveguide axis","authors":"E. Gevorkyan","doi":"10.1109/ICEAA.2015.7297060","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297060","url":null,"abstract":"Properties of transition radiation of charged particle in anisotropic magneto dielectric plate in a regular waveguide are considered at passing of charged particle perpendicular to the waveguide axis. Describing the transverse-magnetic (TM) field in different regions of the waveguide with help of the longitudinal component of the electric filed the wave equations and the analytical expressions for TM filed in the waveguide are found. The energy of transition radiation of moving charged particle is calculated using the obtained analytical expressions for TM filed and Poynting vector. The properties of transition radiation in the case of rectangular waveguide are analyzed. An analytical expression for the energy of transition radiation in the case when in the waveguide is placed a thin anisotropic magneto dielectric plate is calculated too. The frequency at which it is possible the Vavilov-Cerenkov radiation is found. On the Vavilov-Cerenkov radiation indicates the appearance of a sharp peak in the spectrum of the transition radiation.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116363215","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
Simultaneously improving the efficiency and compression of the adaptive cross approximation algorithm 同时提高了自适应交叉逼近算法的效率和压缩能力
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297064
A. Heldring, E. Ubeda, J. Rius
{"title":"Simultaneously improving the efficiency and compression of the adaptive cross approximation algorithm","authors":"A. Heldring, E. Ubeda, J. Rius","doi":"10.1109/ICEAA.2015.7297064","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297064","url":null,"abstract":"This paper proposes an adaptation of the conventional ACA algorithm for block-wise impedance matrix compression, yielding a substantial speed-up as well as a higher compression rate. The recently published stochastic Frobenius norm estimation is complemented with a new approach to allow applying it to blocks that represent touching regions. The stochastic method is then combined with SVD recompression to simultaneously eliminate the stochastic uncertainty and optimize the compression rate.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133717429","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
Implantable 400MHz PIFA for bio-telemetry system 植入式400MHz PIFA生物遥测系统
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297173
M. S. Islam, K. Esselle, L. Matekovits
{"title":"Implantable 400MHz PIFA for bio-telemetry system","authors":"M. S. Islam, K. Esselle, L. Matekovits","doi":"10.1109/ICEAA.2015.7297173","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297173","url":null,"abstract":"A miniaturized implantable antenna, to be implanted in small animal, designed for Medical Implantable Communications Services (MICS), is presented in this paper. The proximity couple-fed technique is applied to enhance the bandwidth of the antenna to overcome the out-of-band probability of the antenna due to frequency detuning by the surrounding tissue and encapsulation. The aim of this research is to transmit the extracted physiological signals from the body of a small animal wirelessly to an external RFID reader (400MHz) connected to a computer via USB cable. The overall dimensions of the antenna are 32mm×22mm×4mm and the ground plane of RFID tag is utilized to improve the performance of the antenna. Animal tissue model has been developed and the antenna is encapsulated by a bio-compatible material before putting it in this model. Effect of encapsulation material is explored in this paper which may be utilized to retune the antenna if needed. The predicted bandwidth of the proposed implanted antenna is found as approximately 8%.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116881257","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
Analysis of finite antenna arrays in the presence of arbitrary electromagnetic structures 任意电磁结构下有限天线阵的分析
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297072
D. Ludick, D. Davidson, U. Jakobus
{"title":"Analysis of finite antenna arrays in the presence of arbitrary electromagnetic structures","authors":"D. Ludick, D. Davidson, U. Jakobus","doi":"10.1109/ICEAA.2015.7297072","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297072","url":null,"abstract":"This work considers the analysis of finite antenna arrays in the presence of arbitrary electromagnetic structures, e.g. a focal plane array illuminating a parabolic dish antenna, or an antenna array located above a finite sized ground plane. The fast solution approach applies domain decomposition where the finite array is considered as one domain and the remainder of the geometry as the other. Two Method-of-Moment (MoM) based strategies will be considered to analyse the coupling between the domains, viz. the Numerical Greens Function Method (NGF) as well as an Iterative Field Bouncing (IFB) scheme. These methods will be compared in terms of accuracy and runtime when used to analyse a bow-tie antenna array situated above a finite size ground plane.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134105383","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 circuital approach for solving the problem of the two wedges 一种解决双楔问题的电路方法
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297115
V. Daniele, R. Zich
{"title":"A circuital approach for solving the problem of the two wedges","authors":"V. Daniele, R. Zich","doi":"10.1109/ICEAA.2015.7297115","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297115","url":null,"abstract":"In the problem of the two wedges, angular and planar regions are present. By resorting to the generalized Wiener Hopf technique, a circuital modelling is presented to represent these regions. This formulation yields integral equations in the spectral domain. Simple quadrature methods provide efficient numerical solutions. The validity of the proposed method will be illustrated by some examples in the oral presentation.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134293562","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: 7
Switchable Frequency Selective Surfaces reflector based on graphene for THz receiver 基于石墨烯的太赫兹接收机可切换频率选择表面反射器
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297197
A. Radwan, V. Verri, M. d'Amico, G. Gentili
{"title":"Switchable Frequency Selective Surfaces reflector based on graphene for THz receiver","authors":"A. Radwan, V. Verri, M. d'Amico, G. Gentili","doi":"10.1109/ICEAA.2015.7297197","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297197","url":null,"abstract":"In this paper we propose a beam reconfigurable antenna for THz applications, which is based on a switchable Graphene Frequency Selective Surface (G-FSS) that acts as a reflector for a primary radiator made of gold. The G-FSS structure consists of two layers of graphene cells arranged in a 5×5 matrix, the two planes being separated by a SiO2 layer; cells belonging to the same row are connected together, so that a common DC voltage can be applied to the entire row; this will control the graphene conductivity σ. The resonance frequency of the gold antenna located on the active G-FSS array is 1.6 THz. The results show that the shape of the radiation pattern can be changed by changing the voltage applied to each row of G-FSS array.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132937412","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
A 3D computational model for analysis of wireless power transfer system based on the magnetic resonance coupling method 基于磁共振耦合方法的无线电力传输系统三维计算模型分析
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI: 10.1109/ICEAA.2015.7297317
M. Joler, B. Stih
{"title":"A 3D computational model for analysis of wireless power transfer system based on the magnetic resonance coupling method","authors":"M. Joler, B. Stih","doi":"10.1109/ICEAA.2015.7297317","DOIUrl":"https://doi.org/10.1109/ICEAA.2015.7297317","url":null,"abstract":"This paper presents a 3D computational model we have created to enable easier and more accurate analysis of the wireless power transfer (WPT) based on the magnetic resonance coupling method (MRC). The model enables time-efficient analysis of practical issues in the design of an MRC WPT system, such as: the optimal size of the MRC system on the transmitting (Tx)- or receiving (Rx)- side, the effects that the distance between the Tx- and Rx- resonator, or between the excitation loop and the resonator, have on the power transfer efficiency and resonant frequency of the system, to mention a few. Experimental verification of the results has been performed and showed a good agreement with the simulation.","PeriodicalId":277112,"journal":{"name":"2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125622907","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
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