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2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)最新文献

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Worst-case sensitivity analysis (WCSA) by particle swarm optimization (PSO): Applications in realistic optimal antenna designs 基于粒子群优化的最坏情况灵敏度分析(WCSA):在天线优化设计中的应用
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731568
Botian Zhang, Y. Rahmat-Samii
{"title":"Worst-case sensitivity analysis (WCSA) by particle swarm optimization (PSO): Applications in realistic optimal antenna designs","authors":"Botian Zhang, Y. Rahmat-Samii","doi":"10.1109/ICEAA.2016.7731568","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731568","url":null,"abstract":"In practical implementation of engineering designs, the design performances may be subject to tolerances and uncertainties. Relying on a worst-case error tolerance model, this paper proposes the particle swarm optimization (PSO) as an approach of the worst-case sensitivity analysis (WCSA). The proposed method utilizes the absorbing boundary condition in PSO, thereby improving its ability to search the worst-case solution. Numerical tests demonstrate that PSO outperforms GA, vertex prediction, and random search in WCSA problems. The effectiveness of the concepts presented in this paper are examined through the analysis of etching tolerances applied to the design of a 60GHz microstrip patch antenna.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115030093","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
Mode converters for high-power microwaves 高功率微波模式转换器
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731383
D. Giri
{"title":"Mode converters for high-power microwaves","authors":"D. Giri","doi":"10.1109/ICEAA.2016.7731383","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731383","url":null,"abstract":"Quite often, the output of high-power microwave sources is extracted in a waveguide mode that is not directly useful to feed an antenna. This makes mode conversion essential at high powers. The power levels can be in the range of a few MW to a GW lasting for a time duration that typically contains hundred cycles of the microwave frequency. We consider the design of two mode converters 1) from TM01 circular to TEM coaxial and 2) TE 10 rectangular to TM01 circular. It is noted that the mode converters are reciprocal devices and can be used in either direction of mode conversion.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134594013","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
UWB in healthcare 医疗保健领域的UWB
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731489
D. Ghosh, P. Sahu
{"title":"UWB in healthcare","authors":"D. Ghosh, P. Sahu","doi":"10.1109/ICEAA.2016.7731489","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731489","url":null,"abstract":"The detection and monitoring of human vital signs through remote sensing is a challenging problem. It has applications in medicine, security and in search and rescue. Consequently, there is a growing market for devices and sensors that allow remote monitoring of human health parameters. Many methodologies have been proposed for this purpose, such as radar monitoring, video camera based recording and laser based detection. Among them, impulse radar or ultra-wideband (UWB) based techniques offer several advantages due to its penetration capabilities, low complexity and high accuracy. This article attempts to provide a glimpse into the ever-expanding world of UWB systems used for healthcare.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114145656","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
Recent advances in the spectral theory of open structures: Existence and distribution of the spectra of running waves for a class of open waveguides 开放结构谱理论的新进展:一类开放波导行波谱的存在与分布
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731402
Y. Shestopalov
{"title":"Recent advances in the spectral theory of open structures: Existence and distribution of the spectra of running waves for a class of open waveguides","authors":"Y. Shestopalov","doi":"10.1109/ICEAA.2016.7731402","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731402","url":null,"abstract":"We give a general description of mathematical background and a resume of the results about existence and distribution of the spectra of running waves in open waveguides, including metal-dielectric waveguides with arbitrary cylindrical in-homogeneities, layered concentric dielectric waveguides of circular cross section and Goubau lines with layered dielectric covers. The newly obtained results are reported concerning singularities (resonant states) of the transmission coefficient in the problems of the wave scattering by parallel-plate dielectric slabs in a waveguide and free space. The findings are based on recent advances in the spectral theory of open structures.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122050784","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
Computational research on calibration target for full-polarimetric scattering measurement 全偏振散射测量标定目标的计算研究
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731443
Y. Bai, H. Yin, C. Dong
{"title":"Computational research on calibration target for full-polarimetric scattering measurement","authors":"Y. Bai, H. Yin, C. Dong","doi":"10.1109/ICEAA.2016.7731443","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731443","url":null,"abstract":"Co-polarized and cross-polarized radar cross sections(RCS) characterize the scattering of complex target completely. Calibration target is required to measure polarimetric scattering matrix(PSM) accurately. The commonly used calibration targets, such as dihedral, cannot apply to bistatic polarimetric RCS calibration because of its narrow cross-polarized returns. This practice devises a new calibration target for PSM measurement. It is a special screw with ten grooves which circumgyrating extend over a flat cylinder. We study the monostatic and bistatic full-polarization RCS by numerical calculation, and confirm that this calibration target has similar co-polarized and cross-polarized responses over a wide band both in monostatic and bistatic. The larruping scattering characteristic makes this target be suitable for bistatic full-polarimetric scattering measurement calibration.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124968806","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
Simulation-driven particle swarm optimization of spatial phase shifters 空间移相器仿真驱动粒子群优化
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731418
A. Lalbakhsh, M. U. Afzal, K. Esselle
{"title":"Simulation-driven particle swarm optimization of spatial phase shifters","authors":"A. Lalbakhsh, M. U. Afzal, K. Esselle","doi":"10.1109/ICEAA.2016.7731418","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731418","url":null,"abstract":"This paper presents a technique to design electromagnetic devices by a combination of evolutionary algorithm and electromagnetic (EM) simulation. This technique, named simulation-driven particle swarm optimization (SDPSO), exploits particle swarm optimization (PSO) to design a microwave component matched to user's requirements. To justify the need for such SDPSO, a performance comparison is made between the presented method and built-in PSO in CST Microwave Studio by designing three spatial phase shifters (45°, 90° and 135°) at 9 GHz. Optimization results show that the SDPSO outperforms the available built-in PSO.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129779143","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: 33
On the effects of mutual coupling in the active reflection coefficient of wide-field scanning electrically large random phased arrays 互耦合对宽场扫描电大随机相控阵主动反射系数的影响
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731490
E. de Lera Acedo, M. Arts, C. Craeye, H. B. Van
{"title":"On the effects of mutual coupling in the active reflection coefficient of wide-field scanning electrically large random phased arrays","authors":"E. de Lera Acedo, M. Arts, C. Craeye, H. B. Van","doi":"10.1109/ICEAA.2016.7731490","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731490","url":null,"abstract":"Wide-angle scanning phased arrays suffer from bandwidth limitations due to the effects of mutual coupling. If the array is regular, blind scan anomalies can be found in the active reflection coefficient in band for even 2:1 bandwidth ratios. If the array has a random distribution of elements however, we can see how the effects of mutual coupling randomize out in the active reflection coefficient, effectively increasing the frequency and scan range bandwidth.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128817549","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
Exploring the effect of forest spatial heterogeneity using coherent three-dimensional radar backscattering model 利用相干三维雷达后向散射模型探讨森林空间异质性的影响
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731522
Le Yang, M. Moghaddam, Qinhuo Liu, Richard H. Chen
{"title":"Exploring the effect of forest spatial heterogeneity using coherent three-dimensional radar backscattering model","authors":"Le Yang, M. Moghaddam, Qinhuo Liu, Richard H. Chen","doi":"10.1109/ICEAA.2016.7731522","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731522","url":null,"abstract":"Modeling natural forest is challenging since the vertical and horizontal structural heterogeneity of variations of tree height, scatter shape, and pattern resulted from different tree species, growth stage, and environmental variables. The heterogeneous effect of mix-scene is not well understood quantitative so far, which might cause substantial uncertainty in the soil moisture and biomass estimations. We investigated effects of trunk tilt, trunk tapering, existence of understory and mix-scenes of forest combined with grass by using a coherence 3D vegetation radar model, which is firstly parametrized and validated using the ground measurements and airborne P band SAR data at pine forest of Metolius, Oregon, USA, 2013-2014. The airborne SAR data and simulated data are in good agreement with mean difference less than 1dB and correlation coefficient above 0.96. The tilt angle from 0 to 10 degree can reduce the backscatter coefficient of 1.55dB and 1.03dB for HH and VV, respectively. Tapering of trunk causes the decrease of 2.54dB and 6.35dB for HH and VV polarizations. Simulations of several mix-scenes of the same tree and ground parameters but difference tree clumping patterns indicate the largest difference can up to 3dB of extreme tree clumping patterns.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130200991","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
Impact of the evaluation precision of the reaction integrals of the method of moments on the solution of plasmonic problems near the quasi-static regime 矩量法的反应积分计算精度对准静态区附近等离子体问题求解的影响
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731552
D. M. Solís, J. M. Taboada, F. Obelleiro, L. Landesa, J. Rodríguez
{"title":"Impact of the evaluation precision of the reaction integrals of the method of moments on the solution of plasmonic problems near the quasi-static regime","authors":"D. M. Solís, J. M. Taboada, F. Obelleiro, L. Landesa, J. Rodríguez","doi":"10.1109/ICEAA.2016.7731552","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731552","url":null,"abstract":"The present work digs into some of the accuracy issues the authors have found when dealing with plasmonic problems in the vicinity of quasi-statics, where the dimension of the particles inevitably leads to extremely small mesh sizes to preserve the geometrical features. Obviously, these problems can always be traced back to a certain lack of precision in the evaluation of the reaction integrals, but some light is herein shed as to which term in the impedance matrix each inconsistency can be related to, in addition to some physical insight.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127590207","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
Phased array far field in the time domain 相控阵远场时域
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2016-09-01 DOI: 10.1109/ICEAA.2016.7731444
R. Haupt, P. Nayeri
{"title":"Phased array far field in the time domain","authors":"R. Haupt, P. Nayeri","doi":"10.1109/ICEAA.2016.7731444","DOIUrl":"https://doi.org/10.1109/ICEAA.2016.7731444","url":null,"abstract":"The far field definition used by the IEEE comes from a narrow band formulation (time-harmonic fields). This paper looks at the far field definition from a broadband signal perspective. A time domain definition of far field in terms of the pulse dispersion for large, wideband phased arrays is presented. It is shown that far field in the time domain depends upon the instantaneous bandwidth of the signal.","PeriodicalId":434972,"journal":{"name":"2016 International Conference on Electromagnetics in Advanced Applications (ICEAA)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124673972","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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