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2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)最新文献

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Complexity of Integral Algorithm for Calculation of Electromagnetic Field in Nonstationary Medium 非平稳介质中电磁场计算积分算法的复杂性
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294659
T. Remayeva, A. Nerukh
{"title":"Complexity of Integral Algorithm for Calculation of Electromagnetic Field in Nonstationary Medium","authors":"T. Remayeva, A. Nerukh","doi":"10.1109/MSMW.2007.4294659","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294659","url":null,"abstract":"The paper is devoted to estimation of complexity of an algorithm for calculating of a nonlinear medium with parameters dependent on time.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133624365","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
Waves in the Periodic Stratified Media with the Anharmonic Law of Change of Permittivity 具有介电常数非调和变化规律的周期性分层介质中的波
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294616
Y. Terentev
{"title":"Waves in the Periodic Stratified Media with the Anharmonic Law of Change of Permittivity","authors":"Y. Terentev","doi":"10.1109/MSMW.2007.4294616","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294616","url":null,"abstract":"In this paper, analysis of electromagnetic waves in periodic stratified media with anharmonic law of change of permittivity is carried out. The second order differential equations for amplitudes of transversal electromagnetic waves extending orthogonal to a direction of spatial heterogeneity are considered. The results obtained in this present work are applicable to quantum Bloch problem in a periodic field with anharmonic law of change.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115476276","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
Radially Three-Layered Dielectric Resonators for Millimeter Wavelengths 毫米波径向三层介质谐振器
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294770
I. A. Shipilova, O. Suvorova, Y. Filipov, Y. Prokopenko
{"title":"Radially Three-Layered Dielectric Resonators for Millimeter Wavelengths","authors":"I. A. Shipilova, O. Suvorova, Y. Filipov, Y. Prokopenko","doi":"10.1109/MSMW.2007.4294770","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294770","url":null,"abstract":"In the present paper eigen oscillations of radially three-layered cylindrical and spherical dielectric resonators are studied. The cylindrical resonator is limited with two perfectly conducting end plates. The resonator layers radii are denoted by r<sub>p</sub>, p=1;2;3 are the boundaries of resonator layers, the radial thicknesses of the middle layers are Delta=r<sub>2</sub>-r<sub>1</sub>, L is the axial size of the cylindrical resonator. All resonator layers are isotropic and they are characterized by complex permittivity epsiv<sub>nu</sub>=epsiv'<sub>nu</sub>(1+itandelta<sub>nu</sub>) and permeability mu<sub>nu</sub>=mu'<sub>nu</sub>+imu<sup>n</sup> <sub>nu</sub> where nu =1, 2, 3 is the number of a resonator layer counted off from the resonator center and nu =4 is the number of the ambient medium, tandelta<sub>nu</sub> is loss tangent of the respective layer.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115674022","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
A Novel Microwave High-Temperature Superconducting Reaction-Type Transmitting Filter for Mobile Base Stations 一种新型移动基站微波高温超导反应型发射滤波器
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294675
S. Futatsumori, T. Hikage, T. Nojima
{"title":"A Novel Microwave High-Temperature Superconducting Reaction-Type Transmitting Filter for Mobile Base Stations","authors":"S. Futatsumori, T. Hikage, T. Nojima","doi":"10.1109/MSMW.2007.4294675","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294675","url":null,"abstract":"A novel split open-ring reaction-type construction technique to achieve high power-handling capability for High-temperature superconducting (HTS) filters is presented. The purpose of this filter is to suppress the adjacent noise generated by transmitting power amplifiers for mobile base stations. First, it is explained that reaction-type filters are suitable for high power transmission. Secondly, novel split open-ring resonators, which reduce the maximum current density while maintaining high Q-factors are proposed. Current density dispersion effects are evaluated under the same coupling coefficient. Finally, a 5 GHz three-pole reaction-type filter using split open-ring resonators is designed. The frequency characteristics of the filter are investigated by using the method of moments. The results predict that the filter realizes both a higher power-handling capability than that of transmission-type filters and a better skirt property than existing HTS filters using dual-mode resonators.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124319496","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
Detailed Design of a 1 THz CW Gyrotron (Gyrotron FU CW III) Using a 20 T Superconducting Magnet 使用20 T超导磁体的1太赫兹连续回旋加速器(Gyrotron FU CW III)的详细设计
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294603
L. Agusu, H. Mori, T. Idehara, T. Saito, I. Ogawa, S. Mitsudo, T. Kanemaki
{"title":"Detailed Design of a 1 THz CW Gyrotron (Gyrotron FU CW III) Using a 20 T Superconducting Magnet","authors":"L. Agusu, H. Mori, T. Idehara, T. Saito, I. Ogawa, S. Mitsudo, T. Kanemaki","doi":"10.1109/MSMW.2007.4294603","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294603","url":null,"abstract":"The gyrotron consists of a 20 T superconducting magnet, a demountable gyrotron tube, a triode-type magnetron injection gun, and a sapphire output window. Additional coils are installed surrounding the electron gun centered at the emitter to adjust the beam radius and beam quality at the cavity region. The operation conditions of the cavity modes at second harmonic were investigated through the numerical experiments performed using a multi-mode time-dependent computer code.It is expected that the novel gyrotron will be able to the emit radiation at record of high frequency and unprecedented high output power for such frequency range.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114892480","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: 5
Status of Collective Thomson Scattering Experiment at Frascati Tokamak Upgrade (FTU) 弗拉斯卡蒂托卡马克升级装置(FTU)集体汤姆森散射实验现状
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294843
L. Lubyako, G. Granucci, G. Grosso, F. Orsitto, A. Shalashov, E. Suvorov, U. Tartari
{"title":"Status of Collective Thomson Scattering Experiment at Frascati Tokamak Upgrade (FTU)","authors":"L. Lubyako, G. Granucci, G. Grosso, F. Orsitto, A. Shalashov, E. Suvorov, U. Tartari","doi":"10.1109/MSMW.2007.4294843","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294843","url":null,"abstract":"A diagnostic experiment of collective Thomson scattering (CTS) on thermal density fluctuations designed to provide spatially-resolved measurements of the ion temperature is since long being carried out in the high-field tokamak FTU using a high-power 140 GHz gyrotron as a source of probing radiation. A peculiar feature of CTS experiment on FTU is that the propagation at 140 GHz is below the fundamental electron cyclotron (EC) harmonic (195 GHz-220 GHz). With the only exception of the low-power experiment attempted in TFTR, this is the first proof-of-principle experiment of CTS below the EC resonance, hence with accessibility from the low-field side of both ordinary and extraordinary plasma modes. Thus, this is the only experiment capable for an exhaustive demonstration of CTS in the configuration relevant for alpha CTS in ITER, in which the extraordinary mode at 50-60 GHz propagating below the EC resonance is assumed as most liable candidate. In spite of long lasting efforts to detect CTS from thermal density fluctuations, strong anomalous spectra including spectral lines were systematically detected both in aligned- and in misaligned-antenna conditions at spectral power densities orders-of-magnitude higher than those predicted for the thermal CTS spectra. In the present communication, we report on the interpretation of the anomalous spectra observed at FTU following the results of two experimental campaigns of 2004 and 2005 expressly performed to investigate the anomalous spectra.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124704724","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
Influence of Shadowing Aperture by the Focal Module on Directional Characteristics of Reflector Antennas 聚焦模块遮挡孔径对反射面天线方向特性的影响
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294775
N. Gorobets, V. Kijko
{"title":"Influence of Shadowing Aperture by the Focal Module on Directional Characteristics of Reflector Antennas","authors":"N. Gorobets, V. Kijko","doi":"10.1109/MSMW.2007.4294775","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294775","url":null,"abstract":"The present report aims to research the influence of the sizes of an irradiator on directivity, width of the main lobe and a level of side lobes of the sharp directional parabolic reflector antenna pattern. The analysis of directional characteristics of reflector antennas with big diameters of radiating aperture and other focal lengths results to the following important conclusions for practice: long focus reflector antennas are more wideband on gain and width of the main lobe than shortfocus; the more F/D, the less relative influence of shadowing on factor of gain and width of the main lobe; - the more F/D, the greater level of the maximal side lobe (both the minimal and average for any d/lambda); the more F/D, the more narrow the main lobe of the pattern.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129516335","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
Scattering Amplitude Error Analysis for the MoM Schemes in L2 Commonly Used for Solving a 2-D Scattering from Screens 用于求解屏幕二维散射的L2中MoM格式的散射振幅误差分析
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294648
A. Tyzhnenko, Y. Ryeznik
{"title":"Scattering Amplitude Error Analysis for the MoM Schemes in L2 Commonly Used for Solving a 2-D Scattering from Screens","authors":"A. Tyzhnenko, Y. Ryeznik","doi":"10.1109/MSMW.2007.4294648","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294648","url":null,"abstract":"The scattering amplitude error estimation problem for practically used MoM solutions in L2 function space for scattering from 2-D screens is addressed. To this end, a rigorous Galerkin solution in L2 to logarithmically singular and hypersingular EFIE is used as a reference solution for scattering amplitude error estimation by benchmarking. This one requires substantially lower computational efforts than using of the same MoM algorithm but with very high mesh density as a reference solution. To many, the approach helps to avoid unpredictable errors due to the ill-conditioning connected with high mesh density for any MoM solution to the EFIE in L2. Using the approach, the asymptotic decay rate of scattering amplitude error is investigated for some MoM algorithms widely used in practice.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128307524","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 Radiation Oscillator with Resonant Matching of Diffraction Grating in Open Resonator 开腔中衍射光栅谐振匹配的衍射辐射振荡器
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294744
M. Demchenko, V. Miroshnichenko, Y. Senkevich
{"title":"Diffraction Radiation Oscillator with Resonant Matching of Diffraction Grating in Open Resonator","authors":"M. Demchenko, V. Miroshnichenko, Y. Senkevich","doi":"10.1109/MSMW.2007.4294744","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294744","url":null,"abstract":"The diffraction grating (DG) is the important component of the open resonant system (ORS) used in diffraction radiation oscillator (DRO). The amplitude-phase distribution behavior of the DG space harmonics in a frequency band determines the power and spectral DRO characteristics in many respects. The space harmonics amplitude of DG depends on matching of DG with ORS field. Earlier the problem of the matching of an open resonator field with inhomogeneity in the form of DG was resolved by several ways: one of the open resonator mirrors was completely covered by the DG (orotron), the phase matching of a grating with ORS field was achieved due to rising of the restricted DG above a smooth part of a mirror.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129555205","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
Electrophysical Properties of Nematic Liquid Crystals under Stationary and Microwave Electric Fields 向列型液晶在静电场和微波电场下的电物理特性
2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI: 10.1109/MSMW.2007.4294665
M. Kukhtin, A. I. Kocherzhin, L. Lisetski, A. Nerukh, A. Fedoryako
{"title":"Electrophysical Properties of Nematic Liquid Crystals under Stationary and Microwave Electric Fields","authors":"M. Kukhtin, A. I. Kocherzhin, L. Lisetski, A. Nerukh, A. Fedoryako","doi":"10.1109/MSMW.2007.4294665","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294665","url":null,"abstract":"The electrophysical properties of nematic liquid crystals under stationary and microwave electric fields was investigated in this paper. It was shown that substantial changes in electrodynamic properties of liquid crystal (LC) depending upon controlling parameters at low frequencies. Studies of such effects at microwave frequencies are of great interest and require further studies. The proposed approach can be also generalized to LC systems of other types, in particular, ferroelectric LC (chiral smectics-C), as well as LC with dispersed micro- and nanoparticles (carbon nanotubes, crystal ferroelectrics, magnetics, etc.).","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125407774","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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