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2017 IV International Electromagnetic Compatibility Conference (EMC Turkiye)最新文献

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Diffraction and fringe effects in EMC problems 电磁兼容问题中的衍射和条纹效应
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090384
G. Apaydin, L. Sevgi
Understanding the nature of electromagnetic (EM) wave interference is essential in EMC engineering. EM wave interference mainly includes the diffraction and fringe effects. This paper aims to visualize the diffraction and fringe effects using the canonical wedge structure.
了解电磁波干扰的本质在电磁兼容工程中是必不可少的。电磁波干扰主要包括衍射效应和条纹效应。本文的目的是利用正则楔形结构可视化衍射和条纹效应。
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引用次数: 0
Monitoring of the change in electric field strength levels on Samsun light rail system 三星轻轨系统电场强度水平变化的监测
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090364
Ç. Kurnaz, B. Engiz, A. Turgut
Technological improvements and dense use of wireless systems has led to an increase in exposed electromagnetic radiation (EMR) levels in recent years. The effects of these EMRs on the population have not been completely characterized despite intense research on this topic. For this reason accurate evaluation of EMR levels in the environment have become essential. Therefore, this study aims to determine the electric field strength (E) levels on Samsun Light Rail System which can board around 90.000 passengers per day. To reach this goal; extensive E measurements were conducted on trams during the journey of total 36 stops for one week long using PMM 8053 EMR meter, and the E with a sampling period of 1 second was recorded. It is seen from the measurement results that the highest E is 5.44 V/m while the highest mean E is 0.40 V/m. Furthermore, contribution of E sources in total E determined on the basis of band selective measurements via SRM 3006 EMR meter, and the main E source is decided as cellular systems. In addition to that, the signal strengths of three existing operators for cellular systems were measured by using “NetMonitor” application.
近年来,技术进步和无线系统的密集使用导致暴露的电磁辐射(EMR)水平增加。尽管对这一主题进行了大量研究,但这些电子病历对人群的影响尚未完全表征。因此,准确评估环境中的电磁辐射水平变得至关重要。因此,本研究旨在确定三星轻轨系统的电场强度(E)水平,该系统每天可搭载约9万名乘客。达到这个目标;利用PMM 8053型电磁共振仪,在为期一周的36站有轨电车行程中进行了广泛的电磁共振测量,并记录了采样周期为1秒的电磁共振。从测量结果可以看出,最高E为5.44 V/m,最高平均E为0.40 V/m。通过SRM 3006型EMR计的波段选择性测量,确定了E源在总E中的贡献,确定了主要的E源为蜂窝系统。此外,利用“NetMonitor”应用程序测量了三家现有蜂窝系统运营商的信号强度。
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引用次数: 1
A method for calculating closed form integration of 2-D PMM impedance matrix 二维PMM阻抗矩阵闭合积分的计算方法
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090350
I. Catalkaya, S. Kent
Periodic moment method (PMM) is a useful tool to solve electromagnetic (EM) scattering problems for periodic structures. Double integrals over the cross section of the reference element are performed in the spectral domain formulation. Cross section of reference element of two-dimensional periodic structures; such as wedge absorber, is divided into different shape of cells to obtain scattering behavior. Cells are divided right-angled triangles and rectangles for PMM impedance matrix calculation. Integrating over multiple regions and summing results is needed more CPU time. In this paper, a square region based calculation technique instead of multiple regions technique is introduced for efficiently interpolating of two-dimensional PMM impedance matrices. Using this technique, arbitrary-shaped cells are transformed square cells, which have same area and centroid with existing cells. Thus, calculation of double integrals over cells are obtained easily. Contribution of the study is obtaining integration values by using a new and simple technique.
周期矩法(PMM)是求解周期结构电磁散射问题的有效工具。在谱域公式中对参考元件的横截面进行二重积分。二维周期结构参考单元截面;如楔形吸收器,被分成不同形状的电池来获得散射行为。单元被分成直角三角形和矩形,用于PMM阻抗矩阵的计算。对多个区域进行积分并对结果求和需要更多的CPU时间。本文提出了一种基于平方区域的计算方法来代替多区域的插值方法来实现二维PMM阻抗矩阵的高效插值。利用该技术,将任意形状的细胞转化为与现有细胞具有相同面积和质心的正方形细胞。因此,计算单元格上的二重积分是容易的。本研究的贡献在于利用一种新的、简单的方法获得积分值。
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引用次数: 0
An experimental study on conducted noise emission for PMSM drive with SiC inverter: Conducted noise reduction by snubber circuit SiC逆变器永磁同步电机驱动传导噪声的实验研究:缓冲电路传导降噪
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090353
Tomohiro Ozaki, T. Funaki, T. Ibuchi
Silicon carbide (SiC) devices are attracting attention as next generation power device because of their high breakdown voltage, low conduction loss, and fast switching speed compared with conventional Silicon (Si) device. SiC power device is expected to be used in electric vehicle and hybrid electric vehicle. The large di/dt and dv/dt in fast switching operation interact with parasitic component in circuit wiring, and causes conducted noise. This study focuses on the switching behavior of SiC MOSFET and the conducted noise characteristics in a inverter. The effect of snubber circuit is evaluated with its combination of installation for SiC module.
碳化硅(SiC)器件与传统硅(Si)器件相比,具有击穿电压高、导通损耗低、开关速度快等优点,正成为下一代功率器件。SiC功率器件有望应用于电动汽车和混合动力汽车。快速开关操作中较大的di/dt和dv/dt与电路布线中的寄生元件相互作用,产生传导噪声。本文主要研究了SiC MOSFET的开关特性和逆变器的传导噪声特性。对缓冲电路与SiC模块的组合安装效果进行了评价。
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引用次数: 1
EMC management and control plan for mass rapid transit railway project in Malaysia 马来西亚快速轨道交通项目电磁兼容管理与控制方案
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090375
S. Z. Sapuan, A. Sayegh, M. Jenu
Today, railways have numerous communication, navigation, propulsion, power and control systems. These systems are operating in a very limited space resulting in significant interference issues. Therefore, it is crucial to take into the account the Electromagnetic Compatibility (EMC) through the project life time starting in the design stage. This paper presents briefly the EMC management and control plan of Mass Rapid Transit (MRT) to ensure that the various railway subsystems can function satisfactorily in their intended electromagnetic environment. The EMC approach taken in the MRT Railway project in Malaysia is outlined in this paper. All the MRT railway communications systems should not disturb the operation of each other or the other nearby systems. These communications systems should not be also susceptible to any intentional/unintentional EMI sources in the MRT railway environment. The EMC management and control plan is helpful to avoid EMC/EMI issues of MRT such as EMI sources/ victims identification and risk assessment starting from the design to commissioning. Commonly, all the equipment on the railway must comply to the relevant EMC railway standards such as EN50121. Furthermore, cable management is significantly considered especially for very limited spaces such as tunnels. Finally, the necessary mitigation techniques are recommended to overcome the unexpected EMC challenges which may occur after commissioning.
今天,铁路拥有众多的通信、导航、推进、动力和控制系统。这些系统在非常有限的空间内运行,导致严重的干扰问题。因此,从设计阶段开始,在整个项目生命周期内考虑电磁兼容性(EMC)是至关重要的。简要介绍了轨道交通的电磁兼容管理与控制方案,以保证轨道交通各子系统在预定的电磁环境下能够正常工作。本文概述了马来西亚捷运铁路项目所采用的电磁兼容方法。所有捷运铁路通信系统不应干扰彼此或附近其他系统的运行。这些通信系统也不应受到地铁铁路环境中任何有意/无意的电磁干扰源的影响。EMC管理和控制计划有助于避免MRT从设计到调试的电磁干扰源/受害者识别和风险评估等EMC/EMI问题。一般情况下,铁路上的所有设备都必须符合相关的电磁兼容铁路标准,如EN50121。此外,电缆管理是非常重要的,特别是对于非常有限的空间,如隧道。最后,建议采用必要的缓解技术来克服调试后可能出现的意想不到的EMC挑战。
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引用次数: 2
Miniaturized wide-band supercell frequency selective surface for LTE band applications 用于LTE频段应用的小型化宽带超级细胞频率选择表面
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090378
S. Can, A. Yılmaz, Cenk Mülazımoğlu, E. Karakaya, B. Akaoglu
In this study, two wideband metasurfaces for LTE (Long Term Evolution) frequency applications has been proposed. The first design consists of two SRRs (split ring resonators) having gaps in opposite directions; and it has a S21 resonance at 3.7 GHz. The second design has identical SRRs; and it has a S21 resonance at 3.54 GHz. Both designs were realized via a CNC surface drilling tool. Fabricated SRR super cells were measured with WR229 waveguide. Simulated and measured results were compared and presented. By manipulating the capacitance and inductance values, miniaturization was achieved for the second design.
在本研究中,提出了两个用于LTE(长期演进)频率应用的宽带元表面。第一种设计由两个srr(分裂环谐振器)组成,它们在相反的方向上有间隙;它在3.7 GHz处有S21共振。第二种设计具有相同的srr;在3.54 GHz处具有S21共振。这两种设计都是通过CNC表面钻具实现的。用WR229波导对制备的SRR超级电池进行了测量。仿真结果与实测结果进行了比较。通过控制电容和电感值,实现了二次设计的小型化。
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引用次数: 0
Optically transparent frequency selective surface for filtering 2.6 GHz LTE band 用于滤波2.6 GHz LTE频段的光透明频率选择表面
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090349
F. Bagci, S. Can, E. Karakaya, Cenk Mulazimoglu, A. Yılmaz, B. Akaoglu
In this study, a frequency selective surface consisting of open ring resonator arrays on glass substrate is proposed for filtering TM-polarized 2.6 GHz frequency band by using equivalent inductance and capacitance expressions and full-wave electromagnetic simulation. The FSS is evaluated for different permittivity, strip and gap width as well as strip length and periodicity values and the transmission response is also verified experimentally.
本文利用等效电感和电容表达式和全波电磁仿真,提出了一种在玻璃基板上由开环谐振器阵列组成的频率选择表面,用于滤波tm极化2.6 GHz频段。在不同的介电常数、条带宽度和间隙宽度、条带长度和周期值下对FSS进行了评价,并对其传输响应进行了实验验证。
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引用次数: 3
Planar chiral metamaterial absorber composed of new crescent shaped split ring resonators 新型新月形裂环谐振器组成的平面手性超材料吸收体
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090380
M. Bute, U. Hasar
To support EMC test and measurements a single band chiral metamaterial absorber is suggested in this study for EMC absorber solutions. We analyze a novel chiral metamaterial absorber composed of crescent shaped split-ring resonators at the X-band (8.2–12.4 GHz). To supplement proposed absorber, different loss tangent (δ) values are also considered. Reflection and absorption spectra illustrated high-performance nearly unity absorption levels (maximum absorption) around resonance region. The proposed absorber can find applications in which ultra-thin absorbers are needed and can be a good candidate for promising applications since it is constructed ultra-thin 1.2 mm (0.04λ). All simulations are performed by CST Microwave Studio environment using frequency domain solver. Besides, by changing the geometrical parameters of proposed configuration, it can be scaled up to infrared bands.
为了支持电磁兼容测试和测量,本研究提出了一种单波段手性超材料吸收器作为电磁兼容吸收器的解决方案。在x波段(8.2-12.4 GHz)分析了一种由新月形裂环谐振器组成的新型手性超材料吸收体。为了补充所提出的吸收剂,还考虑了不同的损耗正切(δ)值。反射光谱和吸收光谱表明,在共振区周围,高性能的吸收水平接近统一(最大吸收)。所提出的吸收剂可以找到需要超薄吸收剂的应用,并且由于其构造超薄1.2 mm (0.04λ),因此可以成为有前途的应用的良好候选者。所有仿真均在CST Microwave Studio环境下使用频域求解器进行。此外,通过改变该结构的几何参数,可以将其扩展到红外波段。
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引用次数: 4
On the study of comparative analysis of dielectric loaded effects for rectangular cavity resonators 矩形腔谐振器介质负载效应的比较分析研究
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090360
Agah Oktay Ertay, Ergun Köseoğlu, S. Simsek, Bengül Demiralay
In this paper, a comparison study of dielectric loaded effects of rectangular resonant cavity in terms of resonance frequency, dielectric loading rate and various dielectric constant for different TEy and TMy modes is presented. This study includes two stage analysis procedures. Firstly, field expressions and resonance frequency of the dielectric loaded rectangular resonant cavity with respect to dielectric loading rate are obtained for different TEy and TMy modes by using semi-analytical approach. Secondly, perturbation method is applied for acquiring resonance frequency of each chosen different mode and dielectric constant with respect to dielectric loading rate. Comparison of two different method in terms of variation of resonant frequency with respect to relative dielectric thickness is performed for different dielectric loading case for the same mode and different modes for the same dielectric loading. The results show that perturbation approach can be good alternative to semi-analytical method to calculate the variation of the resonant frequency with respect to relative dielectric thickness.
本文从共振频率、介电加载速率和各介电常数三个方面对矩形谐振腔在不同TEy和TMy模式下的介电加载效应进行了比较研究。本研究包括两个阶段的分析程序。首先,利用半解析方法得到了不同TEy和TMy模式下,介质加载矩形谐振腔的场和谐振频率随介质加载率的表达式;其次,采用微扰法获得各模态的谐振频率和介电常数与介质加载率的关系;比较了相同模态下不同介质加载情况下谐振频率随相对介质厚度的变化情况和相同介质加载时不同模态下谐振频率随相对介质厚度的变化情况。结果表明,微扰法可以很好地替代半解析法来计算谐振频率随相对介质厚度的变化。
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引用次数: 0
Design for EMC compliance: A rugged voice & data terminal 符合EMC的设计:坚固的语音和数据终端
Pub Date : 2017-09-01 DOI: 10.1109/EMCT.2017.8090357
O. Aydin, Melek Kurnaz
Electromagnetic Compatibility (EMC) problems are one of the major problems that should be considered at every stage from the design to the production of electronic equipment. Especially, while designing the user terminals for harsh environments employing displays and various connectors, special attention should be paid to comply with EMC requirements. Because of tendency to reduce the device sizes, increasing the functionality, more complex circuits with higher clock speed is needed. Therefore, EMC compliance is becoming a more difficult task. Since product design is very costly and time consuming, especially for the products which have high operating frequency, there is a great need to evaluate EMC/EMI in the design environment. This paper focuses on the design for EMC compliance for a Rugged Voice & Data Terminal. The minimization of the radiated and conducted emission is described from the design of PCB to manufacturing of whole unit. Furthermore, electromagnetic tests, performance criteria and test results for the Rugged Voice & Data Terminal are given.
电磁兼容(EMC)问题是电子设备从设计到生产各个阶段都要考虑的主要问题之一。特别是在使用显示器和各种连接器的恶劣环境下设计用户终端时,应特别注意满足EMC要求。由于减小器件尺寸,增加功能的趋势,需要更复杂的电路和更高的时钟速度。因此,EMC合规性正成为一项更加艰巨的任务。由于产品设计是非常昂贵和耗时的,特别是对于高工作频率的产品,因此非常需要在设计环境中对EMC/EMI进行评估。本文重点研究了一种强固型语音数据终端的电磁兼容设计。从PCB的设计到整个装置的制造,描述了如何使辐射和传导发射最小化。并给出了坚固型语音数据终端的电磁测试、性能指标和测试结果。
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引用次数: 1
期刊
2017 IV International Electromagnetic Compatibility Conference (EMC Turkiye)
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