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2011 XXXth URSI General Assembly and Scientific Symposium最新文献

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Nonlinearity engineering of mode-locked fiber lasers: Similariton and soliton-similariton lasers 锁模光纤激光器的非线性工程:相似激光器和孤子相似激光器
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050587
F. Ilday, B. Oktem, C. Ulgudur
{"title":"Nonlinearity engineering of mode-locked fiber lasers: Similariton and soliton-similariton lasers","authors":"F. Ilday, B. Oktem, C. Ulgudur","doi":"10.1109/URSIGASS.2011.6050587","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050587","url":null,"abstract":"Fiber lasers are attractive with their simplicity, high powers and low cost. However, propagation of short pulses in optical fiber leads to nonlinear effects, which limit the technical performance. These effects drive rich dynamics, which is interesting from a fundamental perspective. The nonlinear waves community has unraveled the fascinating world of solitons and similaritons through experiments in fibers. This paper overviews the recent development of the soliton-similariton laser. The original similariton laser was the first to work with nonlinear effects, rather than minimizing or compensating them. In the soliton-similariton laser, the propagation is strongly nonlinear everywhere.","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123376327","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
Multi-antenna decoupling technique exploiting MISO channel on neighboring antennas 利用相邻天线MISO信道的多天线解耦技术
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050541
N. Honma, K. Shishido, K. Nishimori, Y. Tsunekawa
{"title":"Multi-antenna decoupling technique exploiting MISO channel on neighboring antennas","authors":"N. Honma, K. Shishido, K. Nishimori, Y. Tsunekawa","doi":"10.1109/URSIGASS.2011.6050541","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050541","url":null,"abstract":"In this paper, a novel decoupling technique suitable for a compact array antenna is proposed. In this technique, an orthogonal excitation weight in MISO channel between 2 × 1 antennas are utilized. The simulation results demonstrate the excellent isolation and matching characteristics can be obtained when the proposed decoupling technique is applied to a compact three inverted-F array. Also, the proposed technique offers high radiation efficiency over the broad bandwidth.","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"119 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120844060","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
Numerical calculation and experimental validation of RCS analysis for radome-enclosed scatterer by using PMCHWT-formulation 基于pmchwt公式的天线罩封闭散射体RCS分析的数值计算与实验验证
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050482
Y. Inasawa, Masayuki Saito, I. Naito, Y. Konishi
{"title":"Numerical calculation and experimental validation of RCS analysis for radome-enclosed scatterer by using PMCHWT-formulation","authors":"Y. Inasawa, Masayuki Saito, I. Naito, Y. Konishi","doi":"10.1109/URSIGASS.2011.6050482","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050482","url":null,"abstract":"This paper investigates the accuracy of RCS analysis for radome-enclosed scatterer by using the PMCHWT-formulation. The analysis method based on a surface integral equation known as the PMCHWT-formulation is outlined shortly. We show that calculated scattering cross section patterns of a dielectric coated conducting sphere agree with exact solutions. Then a RCS pattern of an acrylic hemisphere covered conducting disk is compared with measurement result. Calculated RCS patterns of ellipsoidal radome-enclosed scatterer are also presented. We verify the method of moments using the PMCHWT-formulation is sufficiently accurate for RCS analysis of radome-enclosed scatterer.","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121146410","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
Anti-resonant response of resonant inclusions? 共振内含物的抗共振响应?
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050344
Henrik Walien, H. Kettunen, J. Qi, A. Sihvola
{"title":"Anti-resonant response of resonant inclusions?","authors":"Henrik Walien, H. Kettunen, J. Qi, A. Sihvola","doi":"10.1109/URSIGASS.2011.6050344","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050344","url":null,"abstract":"When retrieving the material parameters of a metamaterial with resonant inclusions, the expected Lorentz-like resonance in one parameter typically yields an unexpected and unphysical so-called antiresonance in the other effective parameter. Using a simple model problem with plasmonic cylinders, we discuss some explanations for the antiresonance-problem and argue that the fundamental reason is that the assumed homogeneous model with sharp boundaries is insufficient when the retrieval fails to produce physically reasonable results. Some promising paths towards a better model are also briefly discussed.","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121263608","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
Sensitivity analysis of microwave backscattering and emission to snow water equivalent: Synergy of dual sensor observations 微波后向散射和发射对雪水当量的敏感性分析:双传感器观测的协同作用
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050830
M. Brogioni, G. Macelloni, S. Paloscia, P. Pampaloni, S. Pettinato, E. Santi, Chuan X'iong, A. Crepaz
{"title":"Sensitivity analysis of microwave backscattering and emission to snow water equivalent: Synergy of dual sensor observations","authors":"M. Brogioni, G. Macelloni, S. Paloscia, P. Pampaloni, S. Pettinato, E. Santi, Chuan X'iong, A. Crepaz","doi":"10.1109/URSIGASS.2011.6050830","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050830","url":null,"abstract":"An accurate sensitivity analysis of microwave emission and scattering to snow water equivalent (SWE) is performed by using a two layer Dense Medium Radiative Transfer Model implemented for both active and passive case. In order to evaluate the potential of the recent Cosmo-Skymed and TerrasarX missions, the study is mainly focussed on X band sensors. Model simulations have shown that an appreciable sensitivity of X-band backscattering and emission to dry snow can be found for Snow Water Equivalent higher than 70–100 mm and relatively high values of snow density and crystal dimensions. These results have been confirmed by experimental data taken from Cosmo Skymed mission and ground based multifrequency radiometers on a test site in the Italian Alps.","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116486023","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
Comparison of GPS-derived vTEC over Cyprus with IRI-2007 塞浦路斯gps衍生的vTEC与IRI-2007的比较
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050962
H. Haralambous, S. Anaksagora, L. Economou, P. Vryonides
{"title":"Comparison of GPS-derived vTEC over Cyprus with IRI-2007","authors":"H. Haralambous, S. Anaksagora, L. Economou, P. Vryonides","doi":"10.1109/URSIGASS.2011.6050962","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050962","url":null,"abstract":"This paper presents a comparison of ionospheric vertical total electron content (vTEC) values evaluated from Nicosia (35.1 N, 33.4 E) ground-based GPS station in Cyprus and the corresponding predictions with the latest version of the IRI model (IRI-2007) during periods of low (2008), and high (2001) solar activity for different seasons.","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121448273","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 low-profile omnidirectional planar antenna with vertical polarization employing two in-phase elements 采用两个同相单元的垂直极化的低轮廓全向平面天线
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050358
Jungsuek Oh, Kamal Sarabandi
{"title":"A low-profile omnidirectional planar antenna with vertical polarization employing two in-phase elements","authors":"Jungsuek Oh, Kamal Sarabandi","doi":"10.1109/URSIGASS.2011.6050358","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050358","url":null,"abstract":"A novel technique for designing a low-profile miniaturized omnidirectional planar antenna with vertical polarization is presented. The proposed antenna is designed using two short in-phase vertical elements. To achieve in-phase radiation the short vertical pins should be λ/2 away from each other. To minimize the λ/2 transmission line a T-type 180 degree phase shifter with a capacitive impedance inverter can be used. However, the drawback of using this phase shifter is the generation of an out-of-phase conduction current going vertically down through the capacitor. The radiated fields from the conduction current cancel out radiated fields from in-phase currents on the two vertical elements, leading to the suppression of vertically polarized radiation. In this study, the conduction current is eliminated by substituting the capacitor connected to the shorting via with an open stub. The geometry of the open stub is optimized to obtain appropriate capacitance values giving the antenna lateral dimensions (λ/8X λ/8) and height (λ/40). An important advantage of the proposed antenna is omnidirectional radiation pattern and high gain.","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"129 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113988858","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
Printing a novel compact triple-band monopole antenna on ceramic substrate 在陶瓷基板上印刷一种新型紧凑三波段单极天线
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050682
C. Kuo, Yu-jing Liao, Chia-Ching Wu, Cheng-Fu Yang, T. Meen, C. Huang, Meng-Chyi Wu
{"title":"Printing a novel compact triple-band monopole antenna on ceramic substrate","authors":"C. Kuo, Yu-jing Liao, Chia-Ching Wu, Cheng-Fu Yang, T. Meen, C. Huang, Meng-Chyi Wu","doi":"10.1109/URSIGASS.2011.6050682","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050682","url":null,"abstract":"A novel miniaturized monopole antenna was designed on the 0.4mm-thickness Al2O3 ceramic substrate and a printed method that generated minimal environmental pollution was used to get the designed pattern. For the proposed triple-band antenna, the compact W-shaped electrode with different length in three arms was used as radiation pattern. Owing to the higher dielectric constant of Al2O3, the size of the triple-band antenna was minimized to 30 mm × 20 mm. The novel triple-band monopole antenna was proposed to operate at 2.4 (WLAN), 3.5 GHz (WiMAX), and 5.2 GHz (WLAN).","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124317224","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
On distributions of fields and power in undermoded mode-stirred reverberation chambers 浅模模搅拌混响室内场和功率的分布
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050750
L. R. Arnaut, G. Gradoni
{"title":"On distributions of fields and power in undermoded mode-stirred reverberation chambers","authors":"L. R. Arnaut, G. Gradoni","doi":"10.1109/URSIGASS.2011.6050750","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050750","url":null,"abstract":"We derive sampling probability density functions (pdfs) of a nonlocal spatio-temporal random electromagnetic field and its intensity in an undermoded mode-stirred cavity, i.e., a statistically inhomogeneous time-varying environment generated by a stochastic process. The inhomogeneous field is represented as a subset (sample) of a homogeneous field (ensemble). The sample statistics of the inhomogeneous field are governed by the number of spatial degrees of freedom, in addition to the number of temporal (stir) degrees of freedom. The results are also of interest in nonergodic mesoscopic dynamical systems, as well as quantum/wave chaos in mixed regular and chaotic billiards beyond the semiclassical approximation.","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124385391","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
Higher-order Kerr effect in ultrashort laser pulse propagation and laser filamentation 超短激光脉冲传播和激光成丝中的高阶克尔效应
2011 XXXth URSI General Assembly and Scientific Symposium Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050603
P. Béjot, J. Kasparian, O. Faucher, É. Hertz, B. Lavorel, J. Wolf
{"title":"Higher-order Kerr effect in ultrashort laser pulse propagation and laser filamentation","authors":"P. Béjot, J. Kasparian, O. Faucher, É. Hertz, B. Lavorel, J. Wolf","doi":"10.1109/URSIGASS.2011.6050603","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050603","url":null,"abstract":"We discuss the contribution of the higher-order Kerr effect (HOKE) to the propagation of ultrashort laser pulses in several contexts. We show that their consideration is necessary to adequately reproduce experimental data about harmonics generation, propagation in hollow-core fibers, and laser filamentation. In the latter case, our results show that the HOKE play a key role for short pluses and/or long wavelengths, while the plasma contributes more for long pulses and/or short wavelengths.","PeriodicalId":325870,"journal":{"name":"2011 XXXth URSI General Assembly and Scientific Symposium","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124385444","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
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