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Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)最新文献

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The boundary problems of electromagnetic theory of planar chiral structures 平面手性结构电磁理论的边界问题
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888608
G. Goshin, N. Lugina
{"title":"The boundary problems of electromagnetic theory of planar chiral structures","authors":"G. Goshin, N. Lugina","doi":"10.1109/MMET.2000.888608","DOIUrl":"https://doi.org/10.1109/MMET.2000.888608","url":null,"abstract":"We present a theoretical investigation of two types of planar structure. One of them represents a chiral slab restricted by a perfectly conducting screen on its bottom (grounded chiral substrate). The other one is a planar system of isolated line wires located on the grounded chiral substrate. The influence of wire system on waveguide properties of a grounded chiral substrate and source radiation field is investigated.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126987993","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
2D matrix filtering of ground penetrating radar data 探地雷达数据的二维矩阵滤波
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888568
V. Kovalenko, S. Masalov
{"title":"2D matrix filtering of ground penetrating radar data","authors":"V. Kovalenko, S. Masalov","doi":"10.1109/MMET.2000.888568","DOIUrl":"https://doi.org/10.1109/MMET.2000.888568","url":null,"abstract":"Specially designed 2D matrix filters can provide a flexible tutorial for the processing of ground penetrating radar data. A brief overview of such filters application and design of the two filters is presented. The first adaptive filter is well suited for separation of large non-contrast objects, layered subsurface structures, etc. The second one provides migration of GPR data sets and increases the horizontal resolution of images.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123799477","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
Modeling of a slot-excited flat disk microstrip antenna 狭缝激励扁平圆盘微带天线的建模
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888585
N. Y. Bliznyuk, A. Nosich
{"title":"Modeling of a slot-excited flat disk microstrip antenna","authors":"N. Y. Bliznyuk, A. Nosich","doi":"10.1109/MMET.2000.888585","DOIUrl":"https://doi.org/10.1109/MMET.2000.888585","url":null,"abstract":"Galerkin's method combined with the method of analytical regularization in the Hankel transform domain is used to analyze a circular-disk metallic microstrip antenna excited by a horizontal magnetic dipole. This method has a controlled accuracy in the resonant range, and a much smaller matrix size in comparison to solutions obtained by direct applications of the method of moments.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123488013","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
New approach to diffraction problems solution by reducing it to Volterra integral equation 将衍射问题化为沃尔泰拉积分方程求解的新方法
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890538
I. Vorgul
{"title":"New approach to diffraction problems solution by reducing it to Volterra integral equation","authors":"I. Vorgul","doi":"10.1109/MMET.2000.890538","DOIUrl":"https://doi.org/10.1109/MMET.2000.890538","url":null,"abstract":"A new approach to solving diffraction problems is proposed. It is based on combining integral equation for the electromagnetic field inside the diffracting object with an integral expression, which determines the diffracted field in the external region after the field inside it. It allows one to obtain the Volterra integral equation with a free term containing the diffracted and incident fields, which can be solved by convergent iterations, giving as a result an expression for the field inside the object, determined after the external one. This expression enables one to obtain an equation connecting the external field and the object parameters, with lower dimension than the initial one. For the presented example as a 1D problem, this equation is just an algebraic one, which allows the solution of the direct problem as well as the inverse one.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121168745","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
Modeling of a slot-excited spherical-circular microstrip antenna 狭缝激励球圆微带天线的建模
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888554
V. V. Radchenko, A. Nosich, J. Daniel, S. Vinogradov
{"title":"Modeling of a slot-excited spherical-circular microstrip antenna","authors":"V. V. Radchenko, A. Nosich, J. Daniel, S. Vinogradov","doi":"10.1109/MMET.2000.888554","DOIUrl":"https://doi.org/10.1109/MMET.2000.888554","url":null,"abstract":"Conformal printed antennas are frequently used in mobile wireless communications and radar due to their low profile and light weight. In this paper, the problem of modeling of a spherical-disk conformal printed antenna is considered assuming excitation by a slot. The slot is modeled by a tangential magnetic dipole located at the surface of the metal sphere covered with dielectric. Previously, similar problems have been analyzed by the method-of-moments. However, the accuracy of these numerical approximations suffer if narrow resonances are present. We propose an exact mathematical method based on the analytical inversion of the free-space static problem for a spherical disk. This method is very stable and gives fast numerical solutions.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121402950","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
Electromagnetic wave scattering by a doubly-periodic magnetodielectric layer 双周期磁介质层对电磁波的散射
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890498
N. Sidorchuk, V. Yachin
{"title":"Electromagnetic wave scattering by a doubly-periodic magnetodielectric layer","authors":"N. Sidorchuk, V. Yachin","doi":"10.1109/MMET.2000.890498","DOIUrl":"https://doi.org/10.1109/MMET.2000.890498","url":null,"abstract":"The problem of electromagnetic wave scattering by a double-periodic magneto-dielectric layer is solved by a new method based on rigorous integro-differential equations. The Galerkin method is applied to reduce these equations to a set of second-order differential ones with constant coefficients in functionals. The general moments of the solution are given. Scattering by some magnetodielectric structures including perfectly conducting ones are studied. Numerical results for transmission and reflection coefficients are presented.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116273140","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
Scalar quantization in the PWL transform spectrum domain 在PWL变换频谱域的标量量化
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888560
R. Baran, D. Wiraszka, W. Dziech
{"title":"Scalar quantization in the PWL transform spectrum domain","authors":"R. Baran, D. Wiraszka, W. Dziech","doi":"10.1109/MMET.2000.888560","DOIUrl":"https://doi.org/10.1109/MMET.2000.888560","url":null,"abstract":"The problem of image compression using the PWL (periodic Walsh piecewise-linear) transform and optimal scalar quantization of the PWL spectrum is presented. A short description of the PWL transform is included. Optimal Lloyd-Max quantization is also presented. The procedure of the presented compression method is based on quantization of a class of scalar variables representing blocks of the image. The effectiveness of the compression method is examined and a visual representation of the results is included.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121648920","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: 8
Mathematical model of radiation from open-ended circular waveguide excited by symmetrical TM/sub 01/ and TE/sub 01/ modes 对称TM/sub - 01/和TE/sub - 01/模式激发开放式圆波导辐射的数学模型
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888591
A. Shishkova, L. Orlova, N. Gorobets
{"title":"Mathematical model of radiation from open-ended circular waveguide excited by symmetrical TM/sub 01/ and TE/sub 01/ modes","authors":"A. Shishkova, L. Orlova, N. Gorobets","doi":"10.1109/MMET.2000.888591","DOIUrl":"https://doi.org/10.1109/MMET.2000.888591","url":null,"abstract":"A mathematical model of the radiation from an open-ended circular waveguide excited by the symmetrical modes TM/sub 01/ and TE/sub 01/ has been developed. Easy to use and reliable approximation expressions, which allow calculation of the power radiation pattern both for TM/sub 01/ and TE/sub 01/ waveguide excitation on the whole observation space, have been obtained. The mathematical model is based on the accurate solution developed by Weinstein. It has been shown that the approximation absolute error does not exceed 0.6 dB and 1.5 dB till the level -30 dB for TM/sub 01/ and TE/sub 01/ modes respectively.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134383747","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
HF Doppler probing the disturbances originating in the ionosphere from natural and anthropogenic sources 高频多普勒探测电离层中来自自然和人为来源的干扰
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890526
L. Chernogor, L.S. Kostrov, V. Rozumenko
{"title":"HF Doppler probing the disturbances originating in the ionosphere from natural and anthropogenic sources","authors":"L. Chernogor, L.S. Kostrov, V. Rozumenko","doi":"10.1109/MMET.2000.890526","DOIUrl":"https://doi.org/10.1109/MMET.2000.890526","url":null,"abstract":"Measurements were made in 1995 to 2000 at the two frequencies of 2.8 MHz and 3.0 MHz. The moving solar terminator generated detectable effects only in the absence of other disturbances in the ionosphere, and, most of all, in the absence of magnetic storms. The response to the dawn terminator commenced immediately after sunrise in the lower part of the ionospheric F-region where the probing radio waves are reflected. HF Doppler radar investigations of a variety of processes associated with rocket launches were performed over the same period of time. The observations have been analysed of thirty two launches from different cosmodromes (Baikonur, Plesetsk, Cape Canaveral, Kourou, and others).","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131154297","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
Diffraction by a multilayer-coated bisinusoidal grating 多层涂覆双正弦光栅的衍射
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890495
Y. Okuno, T. Matsuda, M. Kinoshita
{"title":"Diffraction by a multilayer-coated bisinusoidal grating","authors":"Y. Okuno, T. Matsuda, M. Kinoshita","doi":"10.1109/MMET.2000.890495","DOIUrl":"https://doi.org/10.1109/MMET.2000.890495","url":null,"abstract":"Diffraction from a multilayer-coated bisinusoidal grating is analyzed by Yasuura's mode-matching method. The diffracted fields over the coating, inside the layers, and below the metal surface are represented in terms of finite modal expansions consisting of vector modal functions with unknown coefficients. Since the functions satisfy the vector wave equation and the periodicity and radiation condition, the coefficients are determined so that the representations meet the boundary condition in the least-squares sense. In the present problem where the geometry has several boundaries that are corrugated in two directions, however, the size of the least-squares problem becomes so large that we face the problem of memory deficiency in handling the problem on a computer. We, hence, employ the technique of sequential accumulation in solving the problem, a technique which considerably decreases the memory demand and enables us to solve the problem on a small-sized computer.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127464227","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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