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2007 IEEE Applied Electromagnetics Conference (AEMC)最新文献

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Accurate and efficient computation of the periodic Green’s function in layered media using complex images technique 利用复杂图像技术精确高效地计算分层介质中的周期性格林函数
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638027
H. Alaian, R. Faraji-Dana
{"title":"Accurate and efficient computation of the periodic Green’s function in layered media using complex images technique","authors":"H. Alaian, R. Faraji-Dana","doi":"10.1109/AEMC.2007.4638027","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638027","url":null,"abstract":"In this paper a new method based on the complex images concept has been presented for the first time that can efficiently approximate the periodic Greenpsilas function in layered media. This approximation leads to a closed-form representation for the Greenpsilas function that is very useful in analyzing the periodic structures such as frequency selective surfaces and meta-materials using the integral equations. Accuracy of the results obtained by the proposed method is shown by comparing with other numerical methods.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120957886","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
An iterative algorithm for microwave tomography using multiple illuminations of the target 目标多重光照下的微波层析成像迭代算法
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638024
A. Kundu, B. Bandyopadhyay
{"title":"An iterative algorithm for microwave tomography using multiple illuminations of the target","authors":"A. Kundu, B. Bandyopadhyay","doi":"10.1109/AEMC.2007.4638024","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638024","url":null,"abstract":"An inverse iterative algorithm for microwave imaging based on moment method solution is presented here. This algorithm is based on Levenberg-Merquardt regularization technique with multiple illuminations of the target. It produces better reconstructed image of numerical model under noisy condition in comparison to that developed by our previous algorithms.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134565536","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
Square Split Ring Resonators: Modelling of resonant frequency and polarizability 方形分裂环谐振器:谐振频率和极化率的建模
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638039
C. Saha, J. Siddiqui, D. Guha, Y. Antar
{"title":"Square Split Ring Resonators: Modelling of resonant frequency and polarizability","authors":"C. Saha, J. Siddiqui, D. Guha, Y. Antar","doi":"10.1109/AEMC.2007.4638039","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638039","url":null,"abstract":"In this paper, we propose a theoretical model to estimate the resonance frequency and the magnetic polarizability of the square split ring resonators (S-SRR) having varying gap width within the rings. The model also predicts the quantitative change in polarizability depending on the geometrical orientation of the S-SRR. The computed results are verified with results obtained using an electromagnetic simulator.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133403014","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: 12
Microstrip and printed Antennas: Contributions from CREMA in the last decade 微带和印刷天线:CREMA在过去十年的贡献
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638064
P. Mohanan
{"title":"Microstrip and printed Antennas: Contributions from CREMA in the last decade","authors":"P. Mohanan","doi":"10.1109/AEMC.2007.4638064","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638064","url":null,"abstract":"A very brief and comprehensive survey of developments in antenna design at Centre for Research in Electromagnetics and Antennas for the last decade is presented in this article. The first part of the article deals with the contributions in the area of microstrip antennas while the second part concentrates on the recent trends in antenna research for UWB, WLAN applications.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130132721","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
Solution of BVPs in electrodynamics by stochastic methods 电动力学中BVPs的随机解
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638046
R. Janaswamy
{"title":"Solution of BVPs in electrodynamics by stochastic methods","authors":"R. Janaswamy","doi":"10.1109/AEMC.2007.4638046","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638046","url":null,"abstract":"Field computation by the stochastic differential equation (SDE) method is demonstrated for electrostatic and electrodynamic propagation problems by considering simple examples. The solution to the inhomogeneous Helmholtz equation is first related to that a Schrodinger type of equation (parabolic in nature) by means of Laplace transformation. The SDE method is directly applied to this parabolic equation. Presence of the imaginary term in the parabolic equation warrants analytic continuation into the complex space that is addressed in this paper.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134438524","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
A CAD neural model for shielded and conductor backed CPW 一种屏蔽式和导体背压式CPW的CAD神经模型
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638026
P. Selvan, S. Raghavan, S. Suganthi
{"title":"A CAD neural model for shielded and conductor backed CPW","authors":"P. Selvan, S. Raghavan, S. Suganthi","doi":"10.1109/AEMC.2007.4638026","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638026","url":null,"abstract":"In this paper a CAD approach based on ANNs was successfully introduced to determine the parasitic effects occurred in (effective dielectric and characteristics impedance) Coplanar Wave guide (CPW) with upper shielding and conductor backing. ANNs were trained with three learning algorithms to obtain better performance and faster convergence with simpler structure. The best results were obtained with Levenberg-marquardt algorithms. The quasi-static parameters of two different CPW configurations can be calculated using the neural model proposed in this work very accurately.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133333897","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: 4
Computation of induced fields in the human torso at low frequencies due to contact electrodes using the ADI-FDTD method 使用ADI-FDTD方法计算接触电极在低频下人体躯干的感应场
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638023
V. Singh, Ajeet, G. Lazzi
{"title":"Computation of induced fields in the human torso at low frequencies due to contact electrodes using the ADI-FDTD method","authors":"V. Singh, Ajeet, G. Lazzi","doi":"10.1109/AEMC.2007.4638023","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638023","url":null,"abstract":"The alternating-direction implicit (ADI) finite-difference time-domain (FDTD) method allows larger time steps than the traditional explicit method by bypassing the Courant limit, thus leading to shorter simulation times. In this paper, the use of the ADI-FDTD method in D-H formulation, to compute low-frequency induced fields due to contact electrodes in the human body is reported. Since the frequency is low (120 KHz), quasi-static assumptions have been used to reduce the number of time steps required. An averaging scheme based on Discrete-Fourier Transforms (DFT) have been used to obtain the ratio of the induced field magnitudes to the source, which can then be scaled for any applied signal magnitude.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133712337","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
High gain planar microstrip antenna at X-band x波段高增益平面微带天线
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638003
S. Chakrabarti
{"title":"High gain planar microstrip antenna at X-band","authors":"S. Chakrabarti","doi":"10.1109/AEMC.2007.4638003","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638003","url":null,"abstract":"In this paper a simple technique to develop a wide bandwidth, high gain circularly polarised planar microstrip patch antenna at X-band frequency has been presented. A two layer electromagnetically coupled stacked microstrip circular patch (EMCP) antenna has been designed, fabricated and tested. The design optimisation was carried out using commercial MoM based simulation software. The inter layer separation and size of the patches of the circularly polarised antenna were optimised by successive simulations using the commercial software. Measured gain flatness was better than 1dB and impedance bandwidth was better than 10% around the centre frequency at X-band. Measured results are also presented.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122059297","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: 3
Emerging trends in Microstrip Antenna Technology 微带天线技术的新趋势
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638060
H. R. Patnam
{"title":"Emerging trends in Microstrip Antenna Technology","authors":"H. R. Patnam","doi":"10.1109/AEMC.2007.4638060","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638060","url":null,"abstract":"This paper presents recent trends in microstrip antenna technology highlighting the bandwidth improvements, reflectarray antennas, reconfigurable antennas, electromagnetic band gap structures, frequency selective surfaces and genetic algorithm based antenna designs. Antennas developed at SAMEER, based on theses concepts are included along with measured results.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115074707","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
Parameters calculations of rectangular microstrip patch antenna using Particle Swarm Optimization technique 矩形微带贴片天线参数的粒子群优化计算
2007 IEEE Applied Electromagnetics Conference (AEMC) Pub Date : 2007-12-01 DOI: 10.1109/AEMC.2007.4638010
Vidya Sagar Chintakindi, S. Pattnaik, O. Bajpai, S. Devi, S. Gollapudi, P.K. Pradyumna
{"title":"Parameters calculations of rectangular microstrip patch antenna using Particle Swarm Optimization technique","authors":"Vidya Sagar Chintakindi, S. Pattnaik, O. Bajpai, S. Devi, S. Gollapudi, P.K. Pradyumna","doi":"10.1109/AEMC.2007.4638010","DOIUrl":"https://doi.org/10.1109/AEMC.2007.4638010","url":null,"abstract":"Particle swarm optimization is an evolutionary optimization technique conceived in recent time has many advantages over genetic algorithm. But it is yet to be applied in the parameters calculations of microstrip patch antenna. In this paper, a novel technique is developed to apply particle swarm optimization technique in conjunction with the developed standard equation to accurately calculate the resonant frequency and feed point of rectangular microstrip patch antenna of any dimension and of any substrate thickness. The technique developed in this paper seems to be a generalized soft computing tool to calculate parameters of microstrip antenna such as resonant frequency, feed point etc.","PeriodicalId":397229,"journal":{"name":"2007 IEEE Applied Electromagnetics Conference (AEMC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121492579","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
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