{"title":"FDTD Study of Defect Modes in Two-Dimensional Silver Metallo-Dielectric Photonic Crystal","authors":"M. Ustyantsev, G. Churyumov","doi":"10.1109/MSMW.2007.4294625","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294625","url":null,"abstract":"We model defective silver metallo-dielectric photonic crystal by the finite-difference time-domain (FDTD) method. The Drude model with parameters fit to empirical data was used.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"34 27","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113984289","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}
R. Barrera, A. Reyes-Coronado, A. García-Valenzuela, E. Gutiérrez-Reyes
{"title":"Insights into the Problem of Reflection from Colloidal Systems: An Effective Medium Approach","authors":"R. Barrera, A. Reyes-Coronado, A. García-Valenzuela, E. Gutiérrez-Reyes","doi":"10.1109/MSMW.2007.4294584","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294584","url":null,"abstract":"A colloid is defined as a system in which a dispersed phase is immersed in a homogeneous one. Here we model a colloidal system as a collection of a large number of identical spheres embedded at random in an otherwise homogeneous matrix. Recently developed effective-medium approach is used for the calculation of electromagnetic response in this model.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"49 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":"123061382","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}
V. Yeryomka, M. A. Kopot', O. Kulagin, V. D. Naumenko
{"title":"THz-Range Spatial-Harmonic Magnetrons","authors":"V. Yeryomka, M. A. Kopot', O. Kulagin, V. D. Naumenko","doi":"10.1109/MSMW.2007.4294635","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294635","url":null,"abstract":"The numerical simulation has been used to determine the tentative parameters submm- wavelength SHMs. The reliability of the developed 3-D models is evidenced by the results from testing of the operating laboratory prototypes of the THz-range thermionic-cathode SHMs. The 3-D model thus created can be used in developing the small-size THz-range cold secondary-emission SHMs. The concept of drift-orbital resonance in SHMs allows testing the basic parameters of THz-range magnetrons. It can be used to develop the submm-wavelength spatial-harmonic magnetrons. It can be used to develop the submm-wavelength spatial-harmonics magnetrons.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"24 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":"126830345","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}
{"title":"Ubitron Under Magnetostatic Resonance Regime","authors":"V. Goryashko, K. Ilyenko","doi":"10.1109/MSMW.2007.4294728","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294728","url":null,"abstract":"A possible chaotic behavior of electrons moving in the pump magnetic field of a hybrid planar ubitron may seriously influence its operating regimes. It turns out that some answers to the posed questions can be provided even in the framework of the linear theory.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"41 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":"126512568","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}
S. Bunyaev, A. Barannik, N. Cherpak, A. Gubin, S. Vitusevich
{"title":"Whispering-Gallery-Mode Sapphire Resonators in the Forms of Cylindrical Disc and Cone for Millimeter-Wave Resistance Measurements of HTS Films","authors":"S. Bunyaev, A. Barannik, N. Cherpak, A. Gubin, S. Vitusevich","doi":"10.1109/MSMW.2007.4294678","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294678","url":null,"abstract":"The technique using WGM sapphire disc dielectric resonators allows one to measure the HTS films surface resistance Rs in the interval from 4.2 to Tc with a high sensitivity and accuracy in mm wave band. The evaluation of measurement sensitivity at very low temperatures indicates possibility to study microwave residual resistance problem. However this approach to individual characterization of films is rather impractical. A new type of high g-factor sapphire WGM resonators in the form of a truncated cone with conducting endplate, was proposed for Rs measurements. The resonators were studied experimentally in the millimeter wavelength range. It was demonstrated experimentally that at alpha = 24.1deg sapphire cone resonator can be used to study the surface impedance properties of HTS films. As compared with a cylindrical WGM resonator, it demands only one endplate, which simplifies considerably the measurement process. In comparison to a hemisphere sapphire resonator the cone one is significantly easier to fabricate. Moreover, the resonators enable the control of the interaction of microwave field and HTS film by varying the cone angle a . This opens perspectives for application of this resonator technique in mm-wave range.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"133 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":"122568726","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}
{"title":"Intensity of Schumann Resonance: Universal Time and Local Time Variations","authors":"A. Nickolaenko","doi":"10.1109/MSMW.2007.4294804","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294804","url":null,"abstract":"Records of intensity of global electromagnetic resonance (Schumann resonance) contain two factors: one them depends of the local time and the other is the function of universal time that reflects the level of planetary thunderstorm activity. Three variants of a technique are considered, which allow for separation of local and universal time factors. Theses are applied toward the controlled numerical experiment and, finally, to the experimental records of distant observatories.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"40 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":"122888607","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}
{"title":"Open Resonators for Millimeter Wave Spectroscopy","authors":"G. Annino, T. Kolodiazhnyi, M. Martinelli","doi":"10.1109/MSMW.2007.4294586","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294586","url":null,"abstract":"This paper discusses two versions of resonator that appear well suited for millimetre wave applications. The first proposed solution is given by the whispering gallery mode (WGM) dielectric resonator. The second proposed solution is a variant of the so called nonradiative configuration (nonradiative metallic resonator). The key element of both the proposed solutions is given by their open configuration, namely by a configuration not completely shielded by metallic surfaces.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"26 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":"124466117","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}
{"title":"The Electro Magnetic Response of Human Skin in Submellimeter Frequency Range","authors":"Alexnder Puzenko, Andreas Caduff","doi":"10.1109/MSMW.2007.4294600","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294600","url":null,"abstract":"Summary form only given. For more than 50 years a number of phenomena of nonthermal effects (high Q factor resonances) of extremely high frequency microwaves (MMW) on biological systems have been reported. Intriguingly the reported resonant frequencies are virtually absent in natural biological surroundings, making these effect all the more unusual. While some insight has been gained their interpretation has remained controversial. Theoretical ideas discussed in earlier papers in connection with experimental observations have largely proved to be inconclusive, with poor reproducibility and several confounding results. Furthermore there is ample experimental evidence of the beneficiary effects of low power (less than 20 mW/cm2) MMW electromagnetic radiation in a number of therapeutic avenues such as coronary artery disease, various cancers, pain relief, wound regeneration and hyper tension. In short, while there has been extensive documentation and some serious theoretical consideration, the true cause of these phenomena remain a mystery. Clearly a more solid indication of the main biophysical mechanism(s) of the observed effects would offer the possibility to truly exploit these beneficial aspects, in a systematic fashion. In current presentation the other possible mechanisms are proposed and there validity is illustrated by experimental data.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"41 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":"127952206","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}
{"title":"Diffraction Radiation Antenna for 8-mm Waveband Radar Meant for Airfield Observation","authors":"A. Yevdokymov, V. V. Kryzhanovskiy","doi":"10.1109/MSMW.2007.4294783","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294783","url":null,"abstract":"High-resolution millimeter wave radars become an essential part of ground safety systems. Among them, radar systems for airfield traffic control are of special interest. The diffraction radiation antenna has been designed for it, using novel technology. The antenna consists of a ridged dielectric waveguide, diffraction grating, and focusing lens. The eigenwave of the ridged dielectric waveguide excites resonant oscillations in the elements of the diffraction grating.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"137 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":"121256249","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}
I. Shagimuratov, I. Efishov, I. Zakharenkova, N. Tepenitsina
{"title":"Occurrence of Phase Fluctuations of GPS Signals in the High Latitude Ionosphere During Geomagnetic Storms","authors":"I. Shagimuratov, I. Efishov, I. Zakharenkova, N. Tepenitsina","doi":"10.1109/MSMW.2007.4294801","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294801","url":null,"abstract":"Dual-frequency measurements of the differential carrier phase of GPS L1 (f1,= 1.575 GHz) and L2 (f2 = 1.228 GHz) signals have been used to study the development of phase fluctuations at high-latitude ionosphere during geomagnetic disturbances. The ionosphere irregularities are responsible for scintillations and phase fluctuations of GPS signals. Because of the depressive nature of the ionosphere the dual-frequency GPS phase measurements provide information about variations of the ionospheric total electron content (TEC). The paper analyses the occurrence of strong phase fluctuations of GPS observed at Antarctic stations. The fluctuations caused large scales ionospheric irregularities which were associated with occurrence of polar patches in TEC. The peculiarities of the latitude-longitudinal development of GPS signals phase fluctuations are described.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"61 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":"128613892","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}