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2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science最新文献

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Worst-Case Coupled Voltage Analysis of Printed Circuit Board Traces 印刷电路板走线的最坏情况耦合电压分析
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232151
K. Durbhakula, Ahmed M. Hassan, A. Caruso
{"title":"Worst-Case Coupled Voltage Analysis of Printed Circuit Board Traces","authors":"K. Durbhakula, Ahmed M. Hassan, A. Caruso","doi":"10.23919/URSIGASS49373.2020.9232151","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232151","url":null,"abstract":"A detailed worst-case coupled voltage study on various printed circuit board (PCB) trace shapes has been carried out. Different trace lengths and trace shapes have been considered to explore the response from worst-case coupled voltage under external electromagnetic field. As a first step, the coupled voltage to loads of a straight PCB trace is analytically calculated and compared with existing full-wave electromagnetic (EM) solver over a particular frequency spectrum. The worst-case coupled voltage, which is derived using the Parseval’s theorem averages out the frequency dependent coupled voltage for a certain trace length. The final comparative results indicate that a specific PCB trace shape couples less to EM field irrespective of its length.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"277 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123113183","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
Global Point-to-Point Ionospheric Ray Tracing Using the Direct Variational Method 使用直接变分方法的全球点对点电离层射线追踪
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232035
I. A. Nosikov, M. Klimenko, D. Kotova, P. Bessarab
{"title":"Global Point-to-Point Ionospheric Ray Tracing Using the Direct Variational Method","authors":"I. A. Nosikov, M. Klimenko, D. Kotova, P. Bessarab","doi":"10.23919/URSIGASS49373.2020.9232035","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232035","url":null,"abstract":"Global optimization of phase distance functional is a promising approach to the multipath problem of the point-to-point ionospheric ray tracing. The approach is involves systematic algorithm where all relevant rays between the fixed points are found one after another in a systematic manner, without the need to provide an accurate initial estimation for each solution. In particular for each 10-cal ray searching the direct variational method is applied. The global optimization is applied to a point-to-point ionospheric ray tracing, where the modeled ionosphere is three-dimensional inhomogeneous medium.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116768185","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 Statistical Estimation of 5G Massive MIMO’s Exposure using Stochastic Geometry 基于随机几何的5G海量MIMO暴露统计估计
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232290
Maarouf Al Hajj, Shanshan Wang, P. D. Doncker, Claude Oestges, J. Wiart
{"title":"A Statistical Estimation of 5G Massive MIMO’s Exposure using Stochastic Geometry","authors":"Maarouf Al Hajj, Shanshan Wang, P. D. Doncker, Claude Oestges, J. Wiart","doi":"10.23919/URSIGASS49373.2020.9232290","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232290","url":null,"abstract":"This paper aims to estimate the exposure in 5G massive MIMO networks using a stochastic geometric approach. The paper investigates the effect of beamforming, and the effect of multi-user massive MIMO on the exposure of a 5G network. The massive MIMO antenna pattern distribution is obtained by fitting the radiation pattern obtained by running a large amount of channel simulations on NYUSIM. The distribution is then implemented into an analytical framework based on stochastic geometry, so we can obtain a close form expression of the downlink exposure.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124876709","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
Defected Grounded Rectangular Patch Antenna with Rhombic-Shaped Slots for Early Phase 5G Applications 面向早期5G应用的菱形槽缺陷接地矩形贴片天线
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232027
B. G. Hakanoglu, O. Sen, B. Koc, Ş. Hayber, M. Turkmen
{"title":"Defected Grounded Rectangular Patch Antenna with Rhombic-Shaped Slots for Early Phase 5G Applications","authors":"B. G. Hakanoglu, O. Sen, B. Koc, Ş. Hayber, M. Turkmen","doi":"10.23919/URSIGASS49373.2020.9232027","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232027","url":null,"abstract":"This study presents a novel design of a rectangular patch antenna with rhombic shaped slots (RSS) on the radiating part and five additional slots on the ground plane to create defected ground structure. The first prototype is a conventional inset fed rectangular patch antenna operating at 3.51 GHz which is among the early phase 5G frequency spectrum. The antenna has a return loss level of -37.97 dB and a 10 dB bandwidth of 114.8 MHz. In order to achieve lower return loss levels and improved bandwidth RSS are etched on the radiating part and ground plane. Detailed analysis of the effects of RSS on the characteristics of patch antenna are performed. The results have shown that the final antenna has a 10 dB bandwidth of 116.4 MHz with a return loss level of -55.42 dB which is a 1600 Hz increase in bandwidth and 17.45 dB decrease in return loss levels compared to the reference antenna. As a result of these improved radiation characteristics, the proposed antenna is a suitable candidate for the early phase 5G applications.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"682 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116109882","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
Synchronizing Stock Market Clocks to UTC(NIST) 同步股票市场时钟到UTC(NIST)
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232016
M. Lombardi
{"title":"Synchronizing Stock Market Clocks to UTC(NIST)","authors":"M. Lombardi","doi":"10.23919/URSIGASS49373.2020.9232016","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232016","url":null,"abstract":"To reduce the possibility of fraudulent activity and market manipulation, the world’s major stock exchanges require every clock involved in a stock market transaction to be synchronized to agree with a common reference clock that keeps accurate and internationally traceable time. This paper describes a distributed system that synchronizes stock market clocks to UTC(NIST), the national time standard for the United States. This system is currently installed at stock market data centers in the United States, the European Union, and Asia, and meets the time synchronization regulatory requirements for all three regions.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122643696","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 Comparative Study of Different Phase Detrending Algorithms for Scintillation Monitoring 闪烁监测中不同相位去趋势算法的比较研究
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232349
H. Ghobadi, Caner Savas, L. Spogli, F. Dovis, A. Cicone, M. Cafaro
{"title":"A Comparative Study of Different Phase Detrending Algorithms for Scintillation Monitoring","authors":"H. Ghobadi, Caner Savas, L. Spogli, F. Dovis, A. Cicone, M. Cafaro","doi":"10.23919/URSIGASS49373.2020.9232349","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232349","url":null,"abstract":"Rapid and sudden fluctuations of phase and amplitude in Global Navigation Satellite System (GNSS) signals due to diffraction of the ionosphere phase components when signals passing through small-scale irregularities (less than hundreds meters) are commonly so-called ionospheric scintillation. The aim of the paper is to analyze the implementation and compare the performance of different phase detrending algorithms to improve scintillation monitoring. Three different phase detrending methods, namely, three cascaded second-order high pass filters, six order Butterworth filter conducted by cascading six first-order high pass Butterworth filters, and Fast Iterative Filter (FIF) are considered in this paper. The study exploits real GNSS signals (GPS L1, Galileo E1b) affected by significant phase scintillation effects, collected in early September 2017 at Brazilian Centro de Radioastronomia e Astrofisica Mackenzie (CRAAM) monitoring station and at Adventdalen (Svalbard, Norway) research station. In this study, a softwaredefined radio (SDR) based GNSS receiver is used to process GNSS signals and to implement the aforementioned detrending algorithms.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"94 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122701180","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
A System-Level Overview of Near-Field Meta-Steering 近场元导向的系统级概述
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232418
M. Afzal, K. Esselle, A. Lalbakhsh
{"title":"A System-Level Overview of Near-Field Meta-Steering","authors":"M. Afzal, K. Esselle, A. Lalbakhsh","doi":"10.23919/URSIGASS49373.2020.9232418","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232418","url":null,"abstract":"The paper provides a system-level overview of Near-Field Meta-Steering (NFMS) technology. The NFMS is upcoming antenna beam-steering method that uses the physical rotation of pair of thin metasurfaces that are placed in very close proximity to a high-gain feeding base antenna. This method neither uses any active radio frequency (RF) components nor physical tilting of any antenna part. It is for these reasons that this method yield antenna systems that superior to traditional electronically scanned phased array and mechanically rotated beamsteering antennas. The antenna systems can be developed for a range of applications including inflight connectivity, low-cost satellite terminal antennas to provide connectivity at remote places, and high-power micro- and millimetre-wave applications. The dynamic phase transformation that is achieved by the rotation of two metasurfaces, in a proof-of-concept prototype reported in 2017, indicate that an antenna beam can be scanned in a conical region having an apex angle of 102°.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114502942","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
Study of Surface Wave and Transmission Properties in Radome Surface 天线罩表面波及其传输特性研究
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232320
Varsha Mishra, F. Costa, A. Monorchio
{"title":"Study of Surface Wave and Transmission Properties in Radome Surface","authors":"Varsha Mishra, F. Costa, A. Monorchio","doi":"10.23919/URSIGASS49373.2020.9232320","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232320","url":null,"abstract":"Surface wave and the transmission properties of a radome are discussed. The analysis of transmission properties is based on the transmission line theory. The surface wave analysis of FSS based radome structure has been carried out in the ANSYS HFSS software 19.0. The analyzed radome surface consists of a lossless dielectric material $(varepsilon =2.65)$ coated with a Frequency Selective Surface (FSS).","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122080812","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 Dual-mesh Framework for Multiphysics Simulation of Photoconductive Terahertz Devices 光导太赫兹器件多物理场模拟的双网格框架
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232184
Liang Chen, H. Bağcı
{"title":"A Dual-mesh Framework for Multiphysics Simulation of Photoconductive Terahertz Devices","authors":"Liang Chen, H. Bağcı","doi":"10.23919/URSIGASS49373.2020.9232184","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232184","url":null,"abstract":"The operation of a photoconductive terahertz (THz) device relies on optoelectronic interactions and THz radiation. Although these two processes are coupled, in simulations, they are often modeled separately due to the large difference between the frequencies of optical and THz electromagnetic waves. To model both processes in a single simulation, we propose a dual-mesh discontinuous Galerkin (DG) scheme. Optoelectronic interactions and THz radiation are accounted for by solving, respectively, a coupled system of Maxwell and drift-diffusion equations discretized on a fine mesh and only the Maxwell equations discretized on a coarse mesh. This approach uses an efficient high-order interpolation scheme to “connect” electric field and current discretized on these two meshes. The proposed scheme is validated against experimental results.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129774346","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
Solar Activity And Water Content Of Closed Lake Ecosystems 封闭湖泊生态系统的太阳活动与水分含量
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science Pub Date : 2020-08-01 DOI: 10.23919/URSIGASS49373.2020.9232274
O. Alokhina, O. Ivantyshyn, M. Korus, V. Koshovyy, M. Popov, B. Rusyn
{"title":"Solar Activity And Water Content Of Closed Lake Ecosystems","authors":"O. Alokhina, O. Ivantyshyn, M. Korus, V. Koshovyy, M. Popov, B. Rusyn","doi":"10.23919/URSIGASS49373.2020.9232274","DOIUrl":"https://doi.org/10.23919/URSIGASS49373.2020.9232274","url":null,"abstract":"The question of “helio-dependence” of water level fluctuations within the closed type lakes in the Ukrainian West Polesie nature protected areas has been considered in the paper. The method of correlation analysis was used to define the interrelation between helio- and geophysical processes in the part that provides the ecological safety of the territory. The analysis has shown that the Total Solar Irradiance Index is more informative than the one including sunspot numbers.","PeriodicalId":438881,"journal":{"name":"2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128951835","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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