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2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)最新文献

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Synthesis of circular aperture antenna by amplitude radiation pattern of Fourier harmonics 利用傅里叶谐波幅值辐射图合成圆孔径天线
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-11-12 DOI: 10.1109/DIPED.2015.7324281
N. N. Voitovich, O. O. Bulatsyk
{"title":"Synthesis of circular aperture antenna by amplitude radiation pattern of Fourier harmonics","authors":"N. N. Voitovich, O. O. Bulatsyk","doi":"10.1109/DIPED.2015.7324281","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324281","url":null,"abstract":"The synthesis problem by the amplitude radiation pattern is considered for the circular aperture antennas. The conception of circular harmonics is used. The representation by generating polynomials is used for each harmonic separately. The numerical results are presented for the harmonic of the first order (infundibular pattern).","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133720481","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
Application of the method of auxiliary sources in the 3D antenna synthesis problems 辅助源法在三维天线综合问题中的应用
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-11-12 DOI: 10.1109/DIPED.2015.7324261
V. Tabatadze, R. Zaridze, I. Petoev, B. Phoniava, T. Tchabukiani
{"title":"Application of the method of auxiliary sources in the 3D antenna synthesis problems","authors":"V. Tabatadze, R. Zaridze, I. Petoev, B. Phoniava, T. Tchabukiani","doi":"10.1109/DIPED.2015.7324261","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324261","url":null,"abstract":"The Method of Auxiliary Sources (MAS) is efficiently used in the synthesis problem of antenna with the given far field pattern, by means of the radiated field's fundamental singularities determination. The paper is the continuation and the generalization to the 3D cases our previous publications. As it is known, the same directivity pattern, at the given frequency, could be obtained with the different current distribution on different antenna surface. The problem is reduced to the finding of the more or less optimal current distribution, which is unique. This means the minimal values of the: currents, reactive near field values and also the best matching between antenna and radiation. In the given work is confirmed that the optimal currents' distribution is related to the fundamental singularities of the radiated field.","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115681201","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
Diffraction of the sound wave from a soft disc 从软盘发出的声波的衍射
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-11-12 DOI: 10.1109/DIPED.2015.7324293
D. Kuryliak, Victor Lysechko
{"title":"Diffraction of the sound wave from a soft disc","authors":"D. Kuryliak, Victor Lysechko","doi":"10.1109/DIPED.2015.7324293","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324293","url":null,"abstract":"The problem of a plane acoustic wave diffraction by a soft disc is analyzed and numerically computed for different angle of incident including axial and glancing cases. The problem is solved in terms of the velocity potential using the mode matching technique and the analytical regularization procedure. Using the mode matching technique and the property of orthogonality of associated Legendre functions the initial diffraction problem is reduced to the infinite system of linear algebraic equations (ISLAE). By means of the analytical regularization procedure, ISLAE is reduced to ISLAE of the second kind, which allows one to obtain the solution with the given accuracy. The numerical results of far-field radiation is given.","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128324744","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
Axially-symmetric wave diffraction by infinite bi-cone with truncated shoulder 截肩无限双锥的轴对称波衍射
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-11-12 DOI: 10.1109/DIPED.2015.7324243
D. Kuryliak, O. Sharabura
{"title":"Axially-symmetric wave diffraction by infinite bi-cone with truncated shoulder","authors":"D. Kuryliak, O. Sharabura","doi":"10.1109/DIPED.2015.7324243","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324243","url":null,"abstract":"The problem of axially-symmetric electromagnetic wave diffraction by a perfectly conducting bi-conical surface, one arm of which is a semi-infinite cone and the other is a semi-infinite truncated cone, is solved rigorously using the mode-matching method and the analytical regularization technique. The bi-cone is excited by the ring magnetic source. The coupling of the magnetic field components on the surface of spherical sectors of the bi-cone is analyzed.","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129369364","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
The analysis problem of antenna array with flat rectangular radiators 平面矩形辐射体天线阵的分析问题
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-09-01 DOI: 10.1109/DIPED.2015.7324265
L. Klakovych, Liubomyr Halamaha
{"title":"The analysis problem of antenna array with flat rectangular radiators","authors":"L. Klakovych, Liubomyr Halamaha","doi":"10.1109/DIPED.2015.7324265","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324265","url":null,"abstract":"In this paper the antenna array with flat rectangular radiators in the unlimited homogenous isotropic media is investigated. The analysis problem of this antenna system with account the mutual coupling of radiators is reduced to solving the system of integral equations with regard to the current distribution on radiators. By applying the Galerkin method the system of linear algebraic equations with block-Toeplitz matrix is got. The numerical results of solving the analysis problem of antenna arrays with different geometry are obtained.","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128494852","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
Directive gain of horizontal impedance vibrator located over finite-size perfectly conducting screen 有限尺寸完美导电屏上水平阻抗振子的定向增益
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-09-01 DOI: 10.1109/DIPED.2015.7324255
N. Yeliseyeva, S. Berdnik, V. Katrich, M. Nesterenko
{"title":"Directive gain of horizontal impedance vibrator located over finite-size perfectly conducting screen","authors":"N. Yeliseyeva, S. Berdnik, V. Katrich, M. Nesterenko","doi":"10.1109/DIPED.2015.7324255","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324255","url":null,"abstract":"The 3D vector problem of diffraction of the field of a thin impedance vibrator located over an ideally conducting infinitely thin rectangular screen is solved. The vibrator may have surface impedance distributed over its length. Asymptotic expressions for the current on a horizontal impedance vibrator placed over an infinite plane, obtained by averaging method were used. Full radiation fields in all observation space in the far zone were found by the uniform geometrical theory of diffraction. The directive gain and other characteristics of the resonant impedance vibrator placed above an infinite plane and square screen versus the vibrator dimensions, the surface impedance value, removing from the screen, and screen sizes were studied.","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128992084","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
Retarded potentials and Laguerre transform for initial-boundary value problems for the wave equation 波动方程初边值问题的迟滞势和拉盖尔变换
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-09-01 DOI: 10.1109/DIPED.2015.7324278
S. Litynskyy, A. Muzychuk
{"title":"Retarded potentials and Laguerre transform for initial-boundary value problems for the wave equation","authors":"S. Litynskyy, A. Muzychuk","doi":"10.1109/DIPED.2015.7324278","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324278","url":null,"abstract":"Generalized solutions of initial-boundary value problems for the wave equation are investigated in this article by using retarded layer potentials and Laguerre transform with respect to the time variable. Coefficients of Fourier-Laguerre expansion for densities of potentials are obtained in explicit form. As a result, integral equations in time domain were reduced to sequences of boundary integral equations with the same boundary operator on the left-hand side.","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124665680","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
Convergence of the regularization method in free phase problem 正则化方法在自由相位问题中的收敛性
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-09-01 DOI: 10.1109/DIPED.2015.7324282
Y. Topolyuk
{"title":"Convergence of the regularization method in free phase problem","authors":"Y. Topolyuk","doi":"10.1109/DIPED.2015.7324282","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324282","url":null,"abstract":"The problem with free phase is considered. Convergence of the regularization method for approximate a pseudosolutions with respect to the operator of the equation errors are proved.","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115628681","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
Eigen parameters of Bragg layered structures Bragg层状结构的本征参数
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-09-01 DOI: 10.1109/DIPED.2015.7324273
M. Andreev, V. Borulko, O. Drobakhin, D. Sidorov
{"title":"Eigen parameters of Bragg layered structures","authors":"M. Andreev, V. Borulko, O. Drobakhin, D. Sidorov","doi":"10.1109/DIPED.2015.7324273","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324273","url":null,"abstract":"The influence of various types of distortion of periodicity on the eigen parameters of the layered Bragg resonators has been analyzed. The conditions of reduction of the quality factor of unwanted side Bragg oscillations in quasiperiodic apodized resonators have been determined. It has been proposed the construction of periodic and quasiperiodic structures and apodized Bragg resonators with thin contrast layers, which are relatively easy technologically implemented in the microwave range. “Unsuccessful” positions of active layers and lumped elements are observed. The measurements results of reflection coefficient of periodic and quasiperiodic apodized structures and resonators with thin contrast layers are presented.","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132659635","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
Bragg coupling in corrugated circular waveguides 波纹圆波导中的布拉格耦合
2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2015-09-01 DOI: 10.1109/DIPED.2015.7324272
V. Borulko
{"title":"Bragg coupling in corrugated circular waveguides","authors":"V. Borulko","doi":"10.1109/DIPED.2015.7324272","DOIUrl":"https://doi.org/10.1109/DIPED.2015.7324272","url":null,"abstract":"Circular waveguides with nonperiodical corrugation of wall and longitudinally gyrotropic filling are considered. The Krylov-Bogoliubov-Mitropolsky asymptotic method is used for solving boundary-value problem describing electromagnetic wave propagation in the close waveguiding structure. Mutual transformations of a wave modes propagating in such waveguides are investigated. Analytical solutions for some coupling coefficients are obtained. A variation of polarization parameters along longitudinal coordinate is analyzed. An influence of combination of a helical corrugation and longitudinal gyrotropy for mode and polarization transformation is investigated.","PeriodicalId":437134,"journal":{"name":"2015 XXth IEEE International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127948219","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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