Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.890545
O. Sukharevsky, G.S. Zalevsky
The numerical modeling problem of electromagnetic wave scattering by a system of subsurface resonant objects is considered. The proposal technique based on using integral equations. The mathematical modeling results for the system of perfectly conducting objects, located in the ground are discussed.
{"title":"Electromagnetic fields scattered by the system of the subsurface objects","authors":"O. Sukharevsky, G.S. Zalevsky","doi":"10.1109/MMET.2000.890545","DOIUrl":"https://doi.org/10.1109/MMET.2000.890545","url":null,"abstract":"The numerical modeling problem of electromagnetic wave scattering by a system of subsurface resonant objects is considered. The proposal technique based on using integral equations. The mathematical modeling results for the system of perfectly conducting objects, located in the ground are discussed.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"9 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":"116769837","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}
Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.888512
M. Idemen
The edge conditions which dictate the asymptotic behaviour of the electromagnetic field near the edges play a crucial role in solving boundary-value problems involving boundaries having edges. In analytical studies they permit one to determine some unknown functions while in numerical investigations they enable one to improve the convergence of some processes by introducing beforehand the edge singularities into the field functions. This work is devoted to the analysis of wedge configurations bounded by material sheets having different constitutive parameters. From mathematical point of view, the problem can be reduced to 9 canonical types. These canonical types are investigated in full detail by introducing the confluence concept which permits one to reveal also the logarithmic singularities, if any.
{"title":"The concept of confluence and the edge conditions for a wedge bounded by material sheets","authors":"M. Idemen","doi":"10.1109/MMET.2000.888512","DOIUrl":"https://doi.org/10.1109/MMET.2000.888512","url":null,"abstract":"The edge conditions which dictate the asymptotic behaviour of the electromagnetic field near the edges play a crucial role in solving boundary-value problems involving boundaries having edges. In analytical studies they permit one to determine some unknown functions while in numerical investigations they enable one to improve the convergence of some processes by introducing beforehand the edge singularities into the field functions. This work is devoted to the analysis of wedge configurations bounded by material sheets having different constitutive parameters. From mathematical point of view, the problem can be reduced to 9 canonical types. These canonical types are investigated in full detail by introducing the confluence concept which permits one to reveal also the logarithmic singularities, if any.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"26 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":"121032155","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}
Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.888532
E. Gevorkyan
Propagation of electromagnetic TM waves in a waveguide filled with space-time multiperiodically modulated nonmagnetic dielectric filling is discussed. The analytic expressions for the TM filled are obtained on the assumption of a small modulation indexes of the filling. The frequency of the "strong interaction" between the signal wave and the modulation wave is found.
{"title":"Transverse-magnetic electromagnetic waves in a waveguide with space-time multiperiodically modulated filling","authors":"E. Gevorkyan","doi":"10.1109/MMET.2000.888532","DOIUrl":"https://doi.org/10.1109/MMET.2000.888532","url":null,"abstract":"Propagation of electromagnetic TM waves in a waveguide filled with space-time multiperiodically modulated nonmagnetic dielectric filling is discussed. The analytic expressions for the TM filled are obtained on the assumption of a small modulation indexes of the filling. The frequency of the \"strong interaction\" between the signal wave and the modulation wave is found.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"42 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":"121089845","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}
Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.888572
Y. Ulyanov, N. Maksimova
Atmosphere double frequency radio acoustic sounding (DF RAS) is considered as a method of indirect non-contact remote determination of radio physical properties of the low troposphere. As compared with the other non-contact methods, such as, for example, the laser and radiometric ones, this one stands out because of the high vertical resolution of tens of meters.
{"title":"The estimation of the air humidity in the lower troposphere with the use of the double-frequency radioacoustic sounding system","authors":"Y. Ulyanov, N. Maksimova","doi":"10.1109/MMET.2000.888572","DOIUrl":"https://doi.org/10.1109/MMET.2000.888572","url":null,"abstract":"Atmosphere double frequency radio acoustic sounding (DF RAS) is considered as a method of indirect non-contact remote determination of radio physical properties of the low troposphere. As compared with the other non-contact methods, such as, for example, the laser and radiometric ones, this one stands out because of the high vertical resolution of tens of meters.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"44 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":"126152744","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}
Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.888549
A.V. Brovenko, P. Melezhik, A. Poyedinchuk
A solution method is suggested to the diffraction problem of a homogeneous plane H-polarized wave on a partially screened dielectric anisotropic (hyrotropic) cylinder. In the method, the original boundary value problem in terms of the Maxwell's equation is equivalently reduced to the system of dual series equations whose singular part is converted using the direct solution of the corresponding Riemann-Hilbert boundary value problem with the specially developed analytical regularization procedure. The result is the second-kind system of linear algebraic equations with Hilbert-Schmidt operators in the l/sub 2/-space to be effectively solved with the reduction method.
{"title":"The electromagnetic wave diffraction by a partially screened anisotropic dielectric cylinder","authors":"A.V. Brovenko, P. Melezhik, A. Poyedinchuk","doi":"10.1109/MMET.2000.888549","DOIUrl":"https://doi.org/10.1109/MMET.2000.888549","url":null,"abstract":"A solution method is suggested to the diffraction problem of a homogeneous plane H-polarized wave on a partially screened dielectric anisotropic (hyrotropic) cylinder. In the method, the original boundary value problem in terms of the Maxwell's equation is equivalently reduced to the system of dual series equations whose singular part is converted using the direct solution of the corresponding Riemann-Hilbert boundary value problem with the specially developed analytical regularization procedure. The result is the second-kind system of linear algebraic equations with Hilbert-Schmidt operators in the l/sub 2/-space to be effectively solved with the reduction method.","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":"123300467","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}
Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.888592
E. A. Shorokhova, O. S. Rusakova, V. Yashnov
In this paper, a problem of radiation of longitudinal and transversal slot antennas placed on a circular perfectly conducting cylinder with magnetodielectric coating in a plane waveguide is considered. The calculation reduces to a solution of the Helmholz equations for the electric and magnetic vector potentials. The solution of the problem is obtained in an approximation of a thin antenna (in relation to the wavelength) and given distribution of electric field intensity along the slot. Expressions for the electromagnetic field intensity, radiation power, and conductivity of the longitudinal and transversal slot antennas are obtained. They are presented in a form of double series over the eigenfunctions of the perfect plane waveguide and the azimuth eigenfunctions of the cylinder. Such a representation is very convenient for numerical calculations. Using the expressions obtained the numerical calculations of real and imaginary parts of the radiation conductivity and impedance are performed. The influence of the magnetodielectric coating and geometrical parameters of the problem on antenna characteristics is analysed.
{"title":"Radiation of dielectric-coated longitudinal and transversal slot antennas in a plane waveguide","authors":"E. A. Shorokhova, O. S. Rusakova, V. Yashnov","doi":"10.1109/MMET.2000.888592","DOIUrl":"https://doi.org/10.1109/MMET.2000.888592","url":null,"abstract":"In this paper, a problem of radiation of longitudinal and transversal slot antennas placed on a circular perfectly conducting cylinder with magnetodielectric coating in a plane waveguide is considered. The calculation reduces to a solution of the Helmholz equations for the electric and magnetic vector potentials. The solution of the problem is obtained in an approximation of a thin antenna (in relation to the wavelength) and given distribution of electric field intensity along the slot. Expressions for the electromagnetic field intensity, radiation power, and conductivity of the longitudinal and transversal slot antennas are obtained. They are presented in a form of double series over the eigenfunctions of the perfect plane waveguide and the azimuth eigenfunctions of the cylinder. Such a representation is very convenient for numerical calculations. Using the expressions obtained the numerical calculations of real and imaginary parts of the radiation conductivity and impedance are performed. The influence of the magnetodielectric coating and geometrical parameters of the problem on antenna characteristics is analysed.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"6 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":"126846982","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}
Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.890465
Y. Yukhanov
The problem of a plane wave scattering from an inhomogeneous periodic impedance plane, which is covered with a homogeneous layer of lossy dielectric, is solved in rigorous formulation. The solution is obtained in closed analytical form. The wave is scattered from a plane with non-specular reflecting reactance produced by the periodic groove structure. The grooves are filled with a low-loss dielectric and covered with a uniform dielectric layer.
{"title":"Electromagnetic wave scattering from an impedance plane covered with a dielectric layer","authors":"Y. Yukhanov","doi":"10.1109/MMET.2000.890465","DOIUrl":"https://doi.org/10.1109/MMET.2000.890465","url":null,"abstract":"The problem of a plane wave scattering from an inhomogeneous periodic impedance plane, which is covered with a homogeneous layer of lossy dielectric, is solved in rigorous formulation. The solution is obtained in closed analytical form. The wave is scattered from a plane with non-specular reflecting reactance produced by the periodic groove structure. The grooves are filled with a low-loss dielectric and covered with a uniform dielectric layer.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"32 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":"122732802","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}
Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.888614
A.V. Malyuskin, M.P. Perepechai, S. Shulga
The macroscopic electromagnetic (EM) response of a strongly fluctuating statistically layered bianisotropic medium is obtained by using the renormalization approach of the strong fluctuation theory. Extending existing works for anisotropic media, this paper treats the effective constitutive parameters for a statistically layered bianisotropic medium with random permittivity and permeability dyads and random tensors of magneto-electric coupling.
{"title":"Effective electromagnetic parameters of strongly fluctuating statistically layered bianisotropic medium","authors":"A.V. Malyuskin, M.P. Perepechai, S. Shulga","doi":"10.1109/MMET.2000.888614","DOIUrl":"https://doi.org/10.1109/MMET.2000.888614","url":null,"abstract":"The macroscopic electromagnetic (EM) response of a strongly fluctuating statistically layered bianisotropic medium is obtained by using the renormalization approach of the strong fluctuation theory. Extending existing works for anisotropic media, this paper treats the effective constitutive parameters for a statistically layered bianisotropic medium with random permittivity and permeability dyads and random tensors of magneto-electric coupling.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"156 5 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":"128764735","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}
Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.890486
O. Tretyakov, Zheng Yu
The study of electromagnetic phenomena in the time domain within the scope of the classical approach has faced the problems of a principal nature. An evolutionary approach to electromagnetics (EAE) has been proposed as an alternative tool capable of overcoming the difficulties in the development of electromagnetics for the time domain. In this paper, the idea of EAE is explained and two examples of its application are demonstrated.
{"title":"New explicit solutions in time domain for waveguide signals","authors":"O. Tretyakov, Zheng Yu","doi":"10.1109/MMET.2000.890486","DOIUrl":"https://doi.org/10.1109/MMET.2000.890486","url":null,"abstract":"The study of electromagnetic phenomena in the time domain within the scope of the classical approach has faced the problems of a principal nature. An evolutionary approach to electromagnetics (EAE) has been proposed as an alternative tool capable of overcoming the difficulties in the development of electromagnetics for the time domain. In this paper, the idea of EAE is explained and two examples of its application are demonstrated.","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":"129089823","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}
Pub Date : 2000-09-12DOI: 10.1109/MMET.2000.890487
G. Zaginaylov, P. Turbin, K. Schuenemann, J. Raguin
Periodic waveguides have numerous applications in modern microwave technology mostly due to their two fundamental properties: support of slow waves and existence of stop bands. These properties are common for a great number of waves in periodic media regardless of their nature. However, a reliable approach allowing an adequate analysis of the dispersion properties of the plasma waves in periodic plasma-filled waveguides is addressed for the first time.
{"title":"Spectral properties of a periodic plasma waveguide","authors":"G. Zaginaylov, P. Turbin, K. Schuenemann, J. Raguin","doi":"10.1109/MMET.2000.890487","DOIUrl":"https://doi.org/10.1109/MMET.2000.890487","url":null,"abstract":"Periodic waveguides have numerous applications in modern microwave technology mostly due to their two fundamental properties: support of slow waves and existence of stop bands. These properties are common for a great number of waves in periodic media regardless of their nature. However, a reliable approach allowing an adequate analysis of the dispersion properties of the plasma waves in periodic plasma-filled waveguides is addressed for the first time.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"5 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":"130365176","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}
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