2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)最新文献_第2页

Analysis of Disturbance of the Propagation of Electromagnetic Wave at the Edge of Terrain Obstacle 地形障碍物边缘电磁波传播干扰分析

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8598232

M. Wnuk

引用次数: 0

Monitoring of Nanopowder Combustion Ignited by Laser Radiation 激光点燃纳米粉体燃烧的监测

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597658

Lin Li, A. Mostovshchikov, A. Ilyin, A. Smirnov, F. Gubarev

引用次数: 0

Novel Fractional-Dimensional Approach to Electromagnetics 新的分数维电磁学方法

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597949

M. Zubair, Y. Ang, L. Ang

{"title":"Novel Fractional-Dimensional Approach to Electromagnetics","authors":"M. Zubair, Y. Ang, L. Ang","doi":"10.23919/PIERS.2018.8597949","DOIUrl":"https://doi.org/10.23919/PIERS.2018.8597949","url":null,"abstract":"Fractional-dimensional approach has attracted widespread attention in recent years motivated by its fundamental importance and possible practical applications in electromagnetic (EM)modeling of complex, anisotropic, heterogeneous, disordered or fractal media. In this approach, a complex, rough structure lying in a real space is mapped into a simple structure embedded in a non-integer (fractional)space in an effective manner. Such an approach can provide unparalleled efficiency when handling complex EM structures. In this work, we introduce the basic theory of fractional electrodynamics via generalization of electromagnetic equations to non-integer (fractional)dimensional spaces including the definition of multi-poles and electric, magnetic field of charges in fractional spaces, the derivation of fractional Maxwell equations, the exact solutions of fractional Laplaces, Poissons and Helmholtzs equations in planar-, cylindrical-, and spherical-coordinates and the exact solutions of related electrostatic and electromagnetic wave propagation problems in generalized fractional spaces. We demonstrate the usefulness of this self-consistent theoretical framework in efficient modeling of numerous disordered systems in electronics and photonics. For all these examples, the complexity of the problem is reduced by solving the corresponding fractionalized governing equations under appropriate boundary conditions. The effectiveness of this approach is demonstrated by good agreement of calculated results with full-wave EM simulations or experiments.","PeriodicalId":355217,"journal":{"name":"2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114952604","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

Designs of High Power Ratio Dividers Using Left-Handed Transmission Line Transformers 采用左向传输线变压器的大功率比分压器设计

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8598234

Shi-Ang Xu, Pu-Hua Deng

{"title":"Designs of High Power Ratio Dividers Using Left-Handed Transmission Line Transformers","authors":"Shi-Ang Xu, Pu-Hua Deng","doi":"10.23919/PIERS.2018.8598234","DOIUrl":"https://doi.org/10.23919/PIERS.2018.8598234","url":null,"abstract":"In general, conventional high power ratio unequal Wilkinson power divider needs high and low characteristic impedance quarter-wavelength transformers between isolation resistor and input port. However, high impedance microstrip quarter-wavelength transformer is not easily implemented in microstrip line process because narrow line width is difficult to be realized. Each of the proposed high power ratio unequal power dividers uses left-handed transmission line transformer which has −90° phase delay to avoid the usage of high impedance quarter-wavelength transformer. The first proposed unequal modified Wilkinson power divider has one $pi$-shaped impedance transformer in top arm path and one 3/4 wavelength impedance transformer in bottom arm path between isolation resistor and input port. The $pi$-shaped transformer composed of two shunt short stubs and one series capacitor is used to design a −90° impedance transformer. In order to achieve impedance match and isolation design, the 3/4 wavelength impedance transformer is used to be equivalent to a −90° impedance transformer. To meet output matching requirements, two quarter-wavelength transformers are designed between the isolation resistor and output ports. Besides, to reduce the length of 3/4 wavelength impedance transformer in the first proposed divider, the second unequal split modified Wilkinson power divider is presented. The second divider is utilized three T-shaped transmission lines to realize the role of the 3/4 wavelength impedance transformer in the first divider. Each section of the T-shaped transmission lines uses two series lines and one shunt open stubs to design a 90° transformer, i.e., the total electrical length of the three T-shaped transmission lines equals 270° which is equivalent to the transmission property of the 3/4 wavelength impedance transformer in the first proposed divider. The proposed two dividers have been carefully implemented and verified.","PeriodicalId":355217,"journal":{"name":"2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)","volume":"25 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115061198","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 Compact Millimeter-Wave Array Element Design Combining Integrated Feed and External Taper Slot Structure 集成进给与外部锥形槽结构相结合的紧凑毫米波阵列元件设计

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8598189

H. Lee, J. Park, M. Kim

引用次数: 0

Radiation Characteristics of the Low Profile Dipole Antenna 低轮廓偶极天线的辐射特性

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597967

A. Gevorkyan, T. Privalova, Y. Yukhanov

引用次数: 8

Degradation of Radio Link Capacity with Directional Antennas 定向天线下无线电链路容量的退化

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8598199

J. Kelner, C. Ziółkowski, L. Nowosielski

引用次数: 2

Broadband RCS Reduction Using Digital Impedance Metasurfaces with 2-Bit Coding of Axes of Anisotropy and Eigen Reactances 利用各向异性和本征电抗轴2位编码的数字阻抗超表面来降低宽带RCS

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597701

A. Semenikhin, D. Semenikhina, Y. Yukhanov, P. V. Blagovisnyy

{"title":"Broadband RCS Reduction Using Digital Impedance Metasurfaces with 2-Bit Coding of Axes of Anisotropy and Eigen Reactances","authors":"A. Semenikhin, D. Semenikhina, Y. Yukhanov, P. V. Blagovisnyy","doi":"10.23919/PIERS.2018.8597701","DOIUrl":"https://doi.org/10.23919/PIERS.2018.8597701","url":null,"abstract":"The paper demonstrates the possibilities of broadband radar cross section (RCS) reduction of a fragment of a flat metal plate by means of a nonabsorbing thin-layer coating with a digital anisotropic metasurface (DAMS). The metasurface consists of anisotropic impedance modules of a new type. Modules differ not only of 2-bit coding of the orientation angle of the anisotropy axes, but also of coding the eigenvalues of the impedance tensor. The DAMS coding matrix is described by the binary codes 00, 01, 10, 11 and realizes a RCS reduction due to cancellation, diffuse scattering of waves and twist-effect. The MS coding matrix contains the smallest balanced 2 × 2 blocks consisting of two pairs of “antiphase” modules (for co-and cross-polarization waves). Two models of nonabsorbing meta-coating with a thickness of 3 mm with 2-bit DAMS are developed. The DAMS unit cell is characterized by two eigen reactances, which depend on the orientation of the anisotropy axes of the module. These modules provide twist effect no worse than minus 17 dB in the frequency band 10.2-20.2 GHz. Bistatic RCS patterns made it possible to estimate the levels, number and direction of propagation of intense diffraction lobes. The possibilities of the considered models of 2-bit DAMS to reduce the monostatic and bistatic RCS are compared.","PeriodicalId":355217,"journal":{"name":"2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122915785","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

All-Optical Fiber Power-Frequency Electric Field Sensor Using a Twin-Fbg Based Fiber-Optic Accelerometer with Charged Polyimide 利用带电荷聚酰亚胺的双光纤光纤加速度计的全光纤工频电场传感器

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8598176

Lutang Wang, N. Fang

{"title":"All-Optical Fiber Power-Frequency Electric Field Sensor Using a Twin-Fbg Based Fiber-Optic Accelerometer with Charged Polyimide","authors":"Lutang Wang, N. Fang","doi":"10.23919/PIERS.2018.8598176","DOIUrl":"https://doi.org/10.23919/PIERS.2018.8598176","url":null,"abstract":"In this report, we demonstrate a novel fiber-optic power frequency electric-field sensor. In the sensor structure, a charged polyimide-jacketed fiber cantilever is adopted to form an electric-field sensitive element. The lightweight fiber cantilever can vibrate in power frequency under the actions of the induced alternative electric field force. The vibrating amplitude of fiber cantilever is proportional to the strength of the electric field to be measured, which is optically detected by using a twin-FBG based fiber-optic Fabry-Perot interferometer which is embedded in the fiber beam. The concept and operation principles of this sensor technology including the detailed theoretical analyses will be presented. A sensor prototype is made and some preliminary experimental results for proving sensor concepts as well as for evaluating sensor's basic performances including the sensitivity, dynamic response and directionality will be presented. Experimental results for investigating the actual field distribution surrounding energized structures using this sensor prototype also are demonstrated. These experimental results further verify the feasibility of the proposed sensor technology applying in the power industry for power-frequency electric field sensing.","PeriodicalId":355217,"journal":{"name":"2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114175764","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

Algorithms to Detect and Localize the Source of a Wideband Pulse Signal 宽带脉冲信号源的检测与定位算法

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597993

R. Kadlec, P. Drexler, P. Machala

引用次数: 1