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2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting最新文献

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Microwave inverse scattering for breast tumor detection using finite difference frequency domain modeling 微波逆散射在乳腺肿瘤检测中的有限差分频域建模
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805103
Q. Dong, C. Rappaport
{"title":"Microwave inverse scattering for breast tumor detection using finite difference frequency domain modeling","authors":"Q. Dong, C. Rappaport","doi":"10.1109/ANTEMURSI.2009.4805103","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805103","url":null,"abstract":"We have implemented a new algorithm for the electromagnetic inverse scattering problem in inhomogeneous media using a MATLAB-based finite difference frequency domain (FDFD) forward model. This algorithm, referred to as FDFD-based inverse method, constructs a near-linear expression for inversion from the matrix form of the forward model and uses a vector-based Born approximation without employing an a priori Green's function. This algorithm is easily implemented and is robust to the heterogeneity of the background. 2D microwave breast tumor detection is investigated using an MRI-based breast model for the purpose of checking the application in highly heterogeneous material.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126619175","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 modified double layer Tapered Slot Antenna with improved cross polarization 一种改进交叉极化的双层锥形缝隙天线
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805096
M. Ostadrahimi, S. Noghanian, L. Shafai
{"title":"A modified double layer Tapered Slot Antenna with improved cross polarization","authors":"M. Ostadrahimi, S. Noghanian, L. Shafai","doi":"10.1109/ANTEMURSI.2009.4805096","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805096","url":null,"abstract":"A method for improving polarization purity of the Tapered Slot Antenna (TSA) is investigated. The conventional TSA antenna and the proposed new design are investigated. Simulation and measurement results show a significant improvement in the cross polarization level of the proposed geometry, within a wide frequency bandwidth.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133643328","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: 14
FDTD modeling of wave propagation in a planar waveguide with a biaxially anisotropic metamaterial 具有双轴各向异性超材料的平面波导中波传播的FDTD建模
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805091
S. Mirhadi, M. Kamyab
{"title":"FDTD modeling of wave propagation in a planar waveguide with a biaxially anisotropic metamaterial","authors":"S. Mirhadi, M. Kamyab","doi":"10.1109/ANTEMURSI.2009.4805091","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805091","url":null,"abstract":"In this paper, the electromagnetic behavior of waves created by a line source through a planar waveguide that is partially filled with a biaxial anisotropic dispersive metamaterial is numerically studied. The finite-difference time-domain (FDTD) method based on the piecewise linear recursive convolutional algorithm (PLRC) in conjuction with the convolutional perfectly matched layered (COML) is employed to visualize electric field distributions in several sets of constitutive parameters. In fact, we have tangibly shown that guidance conditions vary greatly with the change of the tensor components and the height of the metamaterial slab. Furthermore, the simulated results are in agreement with theoretical results.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115566261","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
Microstrip-line-fed snail-like slot antenna for ultra-wideband operation 用于超宽带操作的微带馈线蜗牛状槽天线
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805074
J. Jan, J. Yen, Hua‐Ming Chen
{"title":"Microstrip-line-fed snail-like slot antenna for ultra-wideband operation","authors":"J. Jan, J. Yen, Hua‐Ming Chen","doi":"10.1109/ANTEMURSI.2009.4805074","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805074","url":null,"abstract":"An UWB printed slot antenna with a snail-like slot has been presented. Experimental results show that a very wideband operation of presented microstrip-line-fed slot antenna can be obtained. And the impedance bandwidth, determined by 10 dB return loss, reaches nearly 10460 MHz, which is about 150.07%. The radiation patterns have been measured and presented by E- and H-planes, and slot-like patterns can be obtained. From measured results, antenna gain variation is larger than 3 dBi in the range of 3.1−10.6 GHz within this wide impedance bandwidth.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122995346","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
Circuits with light at the nanoscale 纳米级的光电路
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805062
N. Engheta
{"title":"Circuits with light at the nanoscale","authors":"N. Engheta","doi":"10.1109/ANTEMURSI.2009.4805062","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805062","url":null,"abstract":"Imagine circuit elements so small that you could fit many of them in a tiny microscale volume (e.g., a cell)! Imagine that such circuits could work with light at the nanoscale instead of electricity! What could you do with such optical nanocircuits? Would you be able to use them in wireless gadgets at nanoscales, like a “nanoradio”, that may connect our nanoworlds? Could these tiny optical nanocircuits be coupled with biological entities and thus provide nanoscale sensors? The fields of metamaterials and plasmonic optics may provide road maps for such futuristic nanocircuits and wireless nanosystems and sensors. We have been developing and investigating some of the fundamental concepts and theories, and key features of such metaplasmonic structures, devices, and circuits. These circuit elements and components may be envisioned as a tapestry of nanostructures of sizes much smaller than the wavelengths of light. This field, for which I have coined the term metactronics, addresses metamaterial-inspired optical nanocircuits and nanosystems (See references below).. In my group, a variety of ideas and paradigms for nanocircuit functions, optical antennas and sensors for beam shaping and photonic wireless at the nanoscale, optical nanoscopy, nanospectrometer for molecular spectroscopy, cloaking of particles, nanotagging and barcodes based on these optical circuits are being studied. In this talk, I will give an overview of these studies, present insights into these findings, and forecast future ideas and road maps in these areas. For more information, please see the references below.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125227352","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
Flat-top power patterns of arbitrary footprint produced by arrays of arbitrary planar geometry 由任意平面几何阵列产生的任意足迹的平顶功率模式
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805039
A. Aghasi, H. Amindavar, E. Miller
{"title":"Flat-top power patterns of arbitrary footprint produced by arrays of arbitrary planar geometry","authors":"A. Aghasi, H. Amindavar, E. Miller","doi":"10.1109/ANTEMURSI.2009.4805039","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805039","url":null,"abstract":"This paper presents a novel technique for synthesis of flat-top power patterns with desired footprints, generated by array elements positioned on an arbitrary planar geometry. Traditionally, this problem had been considered as a protracted complex nonlinear optimization problem specially when the number of array elements is large for obtaining a desired and detailed pattern. Using the formulation of patterns generated by circular apertures the problem is converted to a collocation problem which not only reduces the number of unknowns but also generalizes the method to any arbitrary planar aperture. Derivation of the closed form formulae specially for the the nonlinear problem simplifies implementation of the method.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117286417","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
Investigation of planar resonant dipole antennas for continuous-wave and ultra-wideband radar modes 用于连续波和超宽带雷达模式的平面谐振偶极子天线研究
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805071
R.B. Hartmann, J. Bray
{"title":"Investigation of planar resonant dipole antennas for continuous-wave and ultra-wideband radar modes","authors":"R.B. Hartmann, J. Bray","doi":"10.1109/ANTEMURSI.2009.4805071","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805071","url":null,"abstract":"This paper presents an investigation into the use of suboptimal planar resonant dipole elements to radiate ultra-wideband pulses in the context of a proposed air-to-air radar mode. By exciting a dipole with a pulse that is shorter than the physical length of the antenna, important properties relating to the radiation mechanism of the antenna are deduced. The results of simulations using the finite-difference time domain method reveal that pulse distortion can be reduced by making small changes to the physical structure of the resonant dipole.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133160125","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 wireless embedded sensor for structural health monitoring applications 用于结构健康监测应用的无线嵌入式传感器
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805063
M. Rad, L. Shafai
{"title":"A wireless embedded sensor for structural health monitoring applications","authors":"M. Rad, L. Shafai","doi":"10.1109/ANTEMURSI.2009.4805063","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805063","url":null,"abstract":"In this paper, a new embedded wireless sensor was presented. The requirements for remote sensing were explained and discussed. It was shown that by use of a foam cover layer, significant improvements in antenna gain (up to 25 dB) can be achieved. Remote detection of the sensors resonance was measured.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"273 21-24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114047438","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: 9
Ultra-wide band TEM horn antenna for microwave imaging of the breast 用于乳房微波成像的超宽带TEM喇叭天线
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805080
R. Amineh, A. Trehan, N. Nikolova
{"title":"Ultra-wide band TEM horn antenna for microwave imaging of the breast","authors":"R. Amineh, A. Trehan, N. Nikolova","doi":"10.1109/ANTEMURSI.2009.4805080","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805080","url":null,"abstract":"A novel TEM horn antenna enclosed in a dielectric medium is proposed for microwave imaging of the breast. The outer surface of the dielectric enclosure is covered partially by copper sheets and a microwave absorbing sheet in order to electromagnetically isolate the antenna from surrounding interferences and to couple most of the microwave energy to the tissue. The results show that the antenna operates well in the whole UWB frequency band without the need for a coupling medium.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121812996","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
Introducing symmetry conditions in the integral equation technique applied to quasi-waveguide structures 引入对称条件的积分方程技术在准波导结构中的应用
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI: 10.1109/ANTEMURSI.2009.4805070
L. Golestanirad, M. Mattes, J. Mosig
{"title":"Introducing symmetry conditions in the integral equation technique applied to quasi-waveguide structures","authors":"L. Golestanirad, M. Mattes, J. Mosig","doi":"10.1109/ANTEMURSI.2009.4805070","DOIUrl":"https://doi.org/10.1109/ANTEMURSI.2009.4805070","url":null,"abstract":"Integral Equation (IE) formulation solved by Method of Moments may be used efficiently to address the problem of quasi-waveguide structures, i.e. structures consisting of a main waveguide with a constant cross section that may bear an arbitrary number of printed circuits backed by dielectric substrates. In the case that the structure as well as the excitation has symmetry requirements, simplifications may be applied on the problem leading to a considerable improvement in the usage of computational resources and time. In this paper we have developed and tested the theoretical formulation to apply the symmetry conditions on the IE technique in the context of shielded multilayered structures excited by waveguide ports. The formulation has been successfully applied to waveguide filters which use frequency selective surfaces as coupling elements.","PeriodicalId":190053,"journal":{"name":"2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128137296","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
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