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2008 12th International Conference on Mathematical Methods in Electromagnetic Theory最新文献

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Calculation method for non-ideally conducting object with thin dielectric envelope 薄介电包层非理想导电物体的计算方法
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580936
V. Vasilets, O. Sukharevsky
{"title":"Calculation method for non-ideally conducting object with thin dielectric envelope","authors":"V. Vasilets, O. Sukharevsky","doi":"10.1109/MMET.2008.4580936","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580936","url":null,"abstract":"The scattered electromagnetic field calculation method for object with non-ideally conducting surface and thin dielectric envelope is considered. The base of method is the calculation of the field scattered by non-ideally conducting object in far and near zones of scatterer and the estimation for contribution of dielectric envelope to the field scattered by this object in far zone. The calculation results for object in thin dielectric envelope are given.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123082437","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
On eigenmodes of a spherical-mirror open resonator 球镜开口谐振器的本征模
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4581026
Yu. V. Svishchov
{"title":"On eigenmodes of a spherical-mirror open resonator","authors":"Yu. V. Svishchov","doi":"10.1109/MMET.2008.4581026","DOIUrl":"https://doi.org/10.1109/MMET.2008.4581026","url":null,"abstract":"A mathematically rigorous analysis is given to eigenmodes of an open resonator (OR) with spherical mirrors in the case when the wavelength is comparable with the resonator size. The traditional eigenmode classification based on OR approximate models has been refined and essentially generalized.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121779307","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
Two notched band two post waveguide section 两段陷波带两段柱波导
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580925
A. Kirilenko, D. Kulik, L. Mospan, L. Rud
{"title":"Two notched band two post waveguide section","authors":"A. Kirilenko, D. Kulik, L. Mospan, L. Rud","doi":"10.1109/MMET.2008.4580925","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580925","url":null,"abstract":"In this paper a two post rectangular waveguide section is presented. The posts are located side by side in a guide cross-section. The waveguide section provides a frequency response with two independently controllable notched bands. Each rejection frequency is tuned by a changing the height of one of two posts, whereas a rejection bandwidth is defined mainly by a post width.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124993422","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: 12
Steganographic communication channel using audio signals 使用音频信号的隐写通信信道
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4581017
S. Hernandez-Garay, R. Vázquez-Medina, L. Niño De Rivera, V. Ponomaryov
{"title":"Steganographic communication channel using audio signals","authors":"S. Hernandez-Garay, R. Vázquez-Medina, L. Niño De Rivera, V. Ponomaryov","doi":"10.1109/MMET.2008.4581017","DOIUrl":"https://doi.org/10.1109/MMET.2008.4581017","url":null,"abstract":"Using MP3 and WAV audio digital signals an algorithm to build a steganographic communication channel is presented. This algorithm is conformed by the insertion and extraction procedures and it use direct sequence spread spectrum (DSSS) to insert confidential (subliminal) information in MP3 and WAV audio digital signals. Evaluation tests were applied to the different steganographic communications channels. According with the obtained results this algorithm can be used to property or exploitation right protection of the audio digital signals.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123481526","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: 13
On the ideal gain of a radiating element in a planar array 平面阵列中辐射元件的理想增益
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580976
S. Skobelev
{"title":"On the ideal gain of a radiating element in a planar array","authors":"S. Skobelev","doi":"10.1109/MMET.2008.4580976","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580976","url":null,"abstract":"The well known formula for the ideal gain of an element in an infinite planar array is derived with methodical purposes on the basis of the general antenna theory applied to periodic structures. The derivation shows that the ideal element gain is a secondary array parameter determined by the ideal element pattern despite the fact that, historically, the formula for it was written earlier than it was done for the ideal array element pattern.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"237 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121477030","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
Use of WEB-splines of arbitrary domain for waveguides 在波导中使用任意域的web样条
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4581003
G. Apaydin, N. Ari
{"title":"Use of WEB-splines of arbitrary domain for waveguides","authors":"G. Apaydin, N. Ari","doi":"10.1109/MMET.2008.4581003","DOIUrl":"https://doi.org/10.1109/MMET.2008.4581003","url":null,"abstract":"This paper illustrates the weighted extended b-splines as basis functions of finite element method of arbitrary domain for waveguides. This method does not need mesh generation for applications. The results are compared with the finite element method with triangulation method using Lagrange basis functions. This method can be used in more electromagnetic applications for future studies.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132776366","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
Evolution of radiopulses radiated by Hertz’s dipole in vacuum 真空中赫兹偶极子辐射的放射性脉冲的演化
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580972
V. Naydenko, S. Piltyay
{"title":"Evolution of radiopulses radiated by Hertz’s dipole in vacuum","authors":"V. Naydenko, S. Piltyay","doi":"10.1109/MMET.2008.4580972","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580972","url":null,"abstract":"Properties of the fields and power descriptions are considered. It is shown that the form of radiopulses in a distant area is determined by a derivative from the form of impulse of current, given on Hertzpsilas dipole. Power descriptions of the electromagnetic field are proportional to the square of derivative from the form of impulse of current, given on Hertzpsilas dipole.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132433368","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: 15
Sharp step bended bar in a waveguide as a two-aperture iris 波导中用作双孔虹膜的一种锋利的阶梯弯曲条
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580926
N. Don, A. Kirilenko, S. Prikolotin
{"title":"Sharp step bended bar in a waveguide as a two-aperture iris","authors":"N. Don, A. Kirilenko, S. Prikolotin","doi":"10.1109/MMET.2008.4580926","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580926","url":null,"abstract":"The problem of the dominant TE10 mode diffraction by a thin sharp step bended metallic bar placed in a rectangular waveguide is considered. It is shown that unlike a straight bar such a bar provides the resonance of complete reflection of the TE10 mode in the single-mode band of frequencies. Influence of the bar geometrical dimensions on the frequency and Q factor of resonances is studied. The geometries providing resonances with the high Q factor were found.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116825585","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
Numerical modeling of dynamics of populations in hydrogen atom under the action of ultra-short laser pulses 超短激光脉冲作用下氢原子居群动力学的数值模拟
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580963
V. Derbov, N. I. Teper
{"title":"Numerical modeling of dynamics of populations in hydrogen atom under the action of ultra-short laser pulses","authors":"V. Derbov, N. I. Teper","doi":"10.1109/MMET.2008.4580963","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580963","url":null,"abstract":"We present the results of the research of population dynamics in a hydrogen atom driven by the ultra-short laser pulses. The possibility to produce a wave packet of Rydberg states with high values of orbital and magnetic quantum numbers is studied numerically depending on duration and shape of a pulse. The wave packet formation is simulated by direct numerical solution of the Schrodinger equation using a large number of basis states both of discrete and continuous spectrum. The continuous spectrum is approximated by a large finite number of states separated by a small wavenumber interval. The conditions of increasing of angular momentum and its projection in system are considered.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133115141","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
Mathematical modeling of disprersive distortions of the wideband chirp signal during its propogation in the ionospheric radiochannel 宽带啁啾信号在电离层无线电信道中传播过程中弥散畸变的数学建模
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580995
N. V. Ilyin, V. Khakhinov
{"title":"Mathematical modeling of disprersive distortions of the wideband chirp signal during its propogation in the ionospheric radiochannel","authors":"N. V. Ilyin, V. Khakhinov","doi":"10.1109/MMET.2008.4580995","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580995","url":null,"abstract":"Theoretical description of the chirp ionosonde operation has been made. Ionosonde registers spectrum sequence of window received-signal sampling. Mathematical modeling of dispersive distortions of spectra registered has been carried out.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133160439","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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