Progress In Electromagnetics Research B最新文献

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A Hermite-interpolation discretization and a uniform path deformation for the spatial spectral domain integral equation method in multilayered media for TE polarization 多层介质中TE偏振空间谱域积分方程法的hermite插值离散化和均匀路径变形
Progress In Electromagnetics Research B Pub Date : 2018-03-17 DOI: 10.2528/PIERB17112104
Rj Roeland Dilz, M. C. Beurden
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引用次数: 1
Eliminate Crosstalk Using Symmetry in MIMO Arrays of Inductive Antennas: an Introduction to Pie-Chart Antennas 利用对称性消除感应天线MIMO阵列中的串扰:饼图天线简介
Progress In Electromagnetics Research B Pub Date : 2017-07-26 DOI: 10.2528/PIERB17021204
J. Douarville-Blaise, D. Pouhè, Jun Hirai
{"title":"Eliminate Crosstalk Using Symmetry in MIMO Arrays of Inductive Antennas: an Introduction to Pie-Chart Antennas","authors":"J. Douarville-Blaise, D. Pouhè, Jun Hirai","doi":"10.2528/PIERB17021204","DOIUrl":"https://doi.org/10.2528/PIERB17021204","url":null,"abstract":"We present a topology of MIMO arrays of inductive antennas exhibiting inherent high crosstalk cancellation capabilities. A single layer PCB is etched into a 3-channels array of emitting/receiving antennas. Once coupled with another similar 3-channels emitter/receiver, we measured an Adjacent Channel Rejection Ratio (ACRR) as high as 70 dB from 150 Hz to 150 kHz. Another primitive device made out of copper wires wound around PVC tubes to form a 2-channels “non-contact slip-ring” exhibited 22 dB to 47 dB of ACRR up to 15MHz. In this paper we introduce the underlying theoretical model behind the crosstalk suppression capabilities of those so-called “Pie-Chart antennas”: an extension of the mutual inductance compensation method to higher number of channels using symmetries. We detail the simple iterative building process of those antennas, illustrate it with numerical analysis and evaluate there effectiveness via real experiments on the 3-channels PCB array and the 2-channels rotary array up to the limit of our test setup. The Pie Chart design is primarily intended as an alternative solution to costly electronic filters or cumbersome EM shields in wireless AND wired applications, but not exclusively.","PeriodicalId":20829,"journal":{"name":"Progress In Electromagnetics Research B","volume":"75 1","pages":"149-173"},"PeriodicalIF":0.0,"publicationDate":"2017-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2528/PIERB17021204","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46517504","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
Investigating Electron Beam Deflections by a Long Straight Wire Carrying a Constant Current using Direct Action, Emission-based and Field Theory Approaches of Electrodynamics 用电动力学的直接作用、发射和场论方法研究恒流长直导线对电子束的偏转
Progress In Electromagnetics Research B Pub Date : 2017-05-17 DOI: 10.2528/PIERB17021103
Ray T. Smith, S. Maher
{"title":"Investigating Electron Beam Deflections by a Long Straight Wire Carrying a Constant Current using Direct Action, Emission-based and Field Theory Approaches of Electrodynamics","authors":"Ray T. Smith, S. Maher","doi":"10.2528/PIERB17021103","DOIUrl":"https://doi.org/10.2528/PIERB17021103","url":null,"abstract":"Results are presented for the transverse de ection of an electron beam by a long, straight wire carrying direct current. The experimental de ections are compared with three calculation methods based on the Lorentz force law (field theory) and both the Weber (direct action) and Ritz (emission) force formulae. The Lorentz force calculation is the conventional approach expressed in terms of electric and magnetic eld components. By contrast the force formulae of Weber and Ritz do not contain any eld vectors relating to E or B. The Weber force is based on direct action whereas the Ritz force expression is based on an emission/ballistic principle and is formulated in terms of a dimensionless constant, λ. The experimental beam de ections are for low speed (non-relativistic) electrons. Good agreement between experiment and theory is demonstrated for each approach. In fact, for the case of an innitely long wire, all three calculation methods give identical results. Finally, the three approaches are contrasted when applied to the case of high speed electrons.","PeriodicalId":20829,"journal":{"name":"Progress In Electromagnetics Research B","volume":"75 1","pages":"79-89"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41330374","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: 10
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