2010 URSI International Symposium on Electromagnetic Theory最新文献_第8页

The diffraction of a dipole-field by an impedance wedge 阻抗楔对偶极子场的衍射

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637212

M. Lyalinov, N. Zhu

引用次数: 0

“Virtual Drive” physical layer simulations for Vehicle-to-Vehicle communication 用于车对车通信的“虚拟驱动器”物理层模拟

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637337

L. Reichardt, T. Schipper, T. Zwick

{"title":"“Virtual Drive” physical layer simulations for Vehicle-to-Vehicle communication","authors":"L. Reichardt, T. Schipper, T. Zwick","doi":"10.1109/URSI-EMTS.2010.5637337","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637337","url":null,"abstract":"Future mobile communications, in the mean of Car-to-Car (C2C), Car-to-Infrastructure (C2I) or Vehicle-to-Vehicle (V2V) communication, will make use of multiple antenna systems like diversity or MIMO. Especially in multiple antenna systems finding the optimal antenna configuration in order to ensure the best performance is a very difficult task. Presently antennas in mobile communications systems, especially in cars, are selected in a rather expensive and time consuming test-drives, if at all. This will not be technically possible and affordable for multiple antenna systems in the future. Here a solution for this problem is demonstrated defined as Virtual Drive. In the Virtual Drive the quality of the antenna system is determined by simulating the mobile, driving through the EM-fields radiated from the transmitter. The multi-path propagation from the transmitter is calculated by a 3D ray-tracing tool, which is based on the theory of geometrical optics (GO) and the Uniform Theory of Diffraction (UTD). The combination of both yields a “virtual drive” through any scenario and allows optimization of antenna configurations without extensive measurement campaigns and without prototyping all configurations to be investigated. Additionally Virtual Drive provides a perfect repeatability of the testing environment.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133794341","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: 6

Near-field microwave holographic imaging: Target localization and resolution study 近场微波全息成像:目标定位与分辨率研究

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637038

M. Ravan, R. Amineh, N. Nikolova

引用次数: 6

A perturbation technique for improving the design of a planar slot array 一种改进平面槽阵设计的微扰技术

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637227

S. Rengarajan

引用次数: 2

A legendre pseudospectral frequency-domain method for solving Maxwell's equations 求解麦克斯韦方程组的legendre伪谱频域方法

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637287

Chih-Yu Wang, Shih-yung Chung, C. Teng, Chung-Ping Chen, Hung-chun Chang

引用次数: 0

Correlation between peak spatial-average SAR and maximum temperature elevation in layered cubical model in the frequency range above 3 GHz 层状立方体模式在3ghz以上频率范围内SAR峰值与最高温度升高的相关性

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637174

A. Hirata, K. Sugiura, Y. Kanai, O. Fujiwara

引用次数: 0

Gaussian beam summation algorithm for ultra wide band indoor channel characterization 超宽带室内信道表征的高斯波束和算法

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637011

V. Timchenko, E. Heyman, A. Boag

{"title":"Gaussian beam summation algorithm for ultra wide band indoor channel characterization","authors":"V. Timchenko, E. Heyman, A. Boag","doi":"10.1109/URSI-EMTS.2010.5637011","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637011","url":null,"abstract":"We present a software package INDOOR-GBS (Gaussian Beam Summation) designed to simulate indoor electro-magnetic field propagation in the ultra wideband (UWB) regime. The package is based on the GBS method where the field of the transmitting antenna is expanded into a superposition of GBs that emerge from the source in a discrete set of directions. Thereafter the beams are traced in the configuration through multiple reflections and transmissions at the walls/ceilings/floors and the field is calculated by summing the contributions of the beams that pass near the zone of interest. The algorithm consists mainly of two phases: a processing phase where the beams are traced through the medium, and a post-processing phase where the field and the channel parameters are calculated for the given source and receiver antennas. The processing phase utilizes a dyadic electromagnetic formulation so that the antennas' properties are used only in the post-processing phase, thus facilitating efficient post-processing calculations for antenna and channel optimization. The algorithm also employs a particular set of isodiffracting GBs (ID-GB), whose propagation characteristics are frequency independent and lead to efficient UWB calculations.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133215259","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

Experimental study on super-resolution 3-D imaging algorithm based on extended capon with reference signal optimization for UWB radars 基于扩展capon和参考信号优化的超宽带雷达超分辨三维成像算法实验研究

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637035

S. Kidera, T. Sakamoto, Toru Sato

{"title":"Experimental study on super-resolution 3-D imaging algorithm based on extended capon with reference signal optimization for UWB radars","authors":"S. Kidera, T. Sakamoto, Toru Sato","doi":"10.1109/URSI-EMTS.2010.5637035","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637035","url":null,"abstract":"Near field radar employing UWB (Ultra Wideband) signals with its high range resolution is promising as various sensing applications. It enables robotic or security sensors that can identify a human body in invisible situations. As one of the most promising radar algorithms, the RPM (Range Points Migration) is proposed. This offers an accurate 3-D (3-dimensional) surface extraction for various target shape. However, in the case of a complicated target surface whose variation scale is less than wavelength, it still suffers from image distortion caused by multiple interference signals with different waveforms. As a substantial solution, this paper proposes a novel range extraction algorithm by extending the Capon, known as frequency domain interferometry (FDI). This algorithm combines reference signal optimization with the original Capon to enhance the accuracy and resolution for an observed range into which a deformed waveform model is introduced. The results obtained from numerical simulations and an experiment prove that super-resolution UWB radar imaging is achieved by the proposed method, even for an extremely complex-surface target, including edges.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133146597","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

Digital optical microscopy using the MR-CSI method 使用MR-CSI方法的数字光学显微镜

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637137

P. M. van den Berg, A. Abubakar

引用次数: 1

New modelling aspects in the Method of Lines 线条法的新造型方面

2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637272

M. Furqan, L. Vietzorreck

{"title":"New modelling aspects in the Method of Lines","authors":"M. Furqan, L. Vietzorreck","doi":"10.1109/URSI-EMTS.2010.5637272","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637272","url":null,"abstract":"In this contribution new developments in the Methods of Lines (MoL) are shown, which make the method to a competitive tool for the analysis of cascaded structures with repetitive sections. The MoL is very well suited for the analysis of layered or cascaded elements, as it uses only a two-dimensional discretization, within the layers or sections analytic calculation is used. Nevertheless, due to the required eigenmode analysis the needed computation time needed is still high compared to commercial tools. Several approaches have been developed in order to make the MoL more efficient, here some of these features have been combined to a new algorithm. First Floquet`s theorem is efficiently used to analyze structures with repeating sections without significant increase in computation time. The number of employed modes is reduced by applying the principle of localized and accessible modes. Last an additional but fast 2D analysis is used to increase the accuracy in determining the loss of lossy conductors. A comparison is made for a distributed MEMS transmission line (DMTL) with up to 20 sections, comparing the results of the new MoL algorithm with commercial tools.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115977981","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