Pub Date : 2018-07-01DOI: 10.1109/MMET.2018.8460249
Dariia O. Yevtushenko, Sergii V. Dukhopelnykov, E. Odarenko, A. Nosich
The optical diffraction radiation that accompanies the motion of a modulated beam of electrons near a dielectric nanowire scatterer is investigated in the two-dimensional formulation. Our goal is to compute the field in the near and far zones and analyze how it depends on electron beam parameters. We demonstrate the excitation of internal resonances of such a scatterer that can be useful in the design of nanoscale noninvasive beam position monitors.
{"title":"Diffraction Radiation of Electron Beam in the Presence of Dielectric Optical Nanowire Resonator","authors":"Dariia O. Yevtushenko, Sergii V. Dukhopelnykov, E. Odarenko, A. Nosich","doi":"10.1109/MMET.2018.8460249","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460249","url":null,"abstract":"The optical diffraction radiation that accompanies the motion of a modulated beam of electrons near a dielectric nanowire scatterer is investigated in the two-dimensional formulation. Our goal is to compute the field in the near and far zones and analyze how it depends on electron beam parameters. We demonstrate the excitation of internal resonances of such a scatterer that can be useful in the design of nanoscale noninvasive beam position monitors.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128356478","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 : 2018-07-01DOI: 10.1109/MMET.2018.8460392
V. Kharchenko, I. Chyrka
The presented paper benchmarks the performance of state-of-the-art methods of objects detection in the particular case of airplanes on the ground identification detection in aerial images taken from unmanned aerial vehicles or satellites. There were tested two popular single-stage neural networks YOLO v.3 and Tiny YOLO v.3 based on the “You Only Look Once” approach. The considered artificial neural network architectures for objects detection has been trained and applied over the specifically created image database. Experimental verification proves their high detection ability, location precision and realtime processing speed using modern graphics processing unit. That approach can be easily applied for detection of many different classes of ground objects.
{"title":"Detection of Airplanes on the Ground Using YOLO Neural Network","authors":"V. Kharchenko, I. Chyrka","doi":"10.1109/MMET.2018.8460392","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460392","url":null,"abstract":"The presented paper benchmarks the performance of state-of-the-art methods of objects detection in the particular case of airplanes on the ground identification detection in aerial images taken from unmanned aerial vehicles or satellites. There were tested two popular single-stage neural networks YOLO v.3 and Tiny YOLO v.3 based on the “You Only Look Once” approach. The considered artificial neural network architectures for objects detection has been trained and applied over the specifically created image database. Experimental verification proves their high detection ability, location precision and realtime processing speed using modern graphics processing unit. That approach can be easily applied for detection of many different classes of ground objects.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130962303","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 : 2018-07-01DOI: 10.1109/MMET.2018.8460366
M. Andreev, V. Borulko, O. Drobakhin
The advantages of the application of fractional-rational approximation in z-plane for analysis of frequency dependences of Bragg-type layered structures are demonstrated. The algorithm on base of continued fractions is under discussion. Connection of zeros behavior and properties of phase characteristics including minimal-phase properties, presence of negative group delay was revealed. The effect of coupling for poles and zeros behavior was investigated.
{"title":"Pole-Zero Characteristics of Bragg-Type Structures","authors":"M. Andreev, V. Borulko, O. Drobakhin","doi":"10.1109/MMET.2018.8460366","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460366","url":null,"abstract":"The advantages of the application of fractional-rational approximation in z-plane for analysis of frequency dependences of Bragg-type layered structures are demonstrated. The algorithm on base of continued fractions is under discussion. Connection of zeros behavior and properties of phase characteristics including minimal-phase properties, presence of negative group delay was revealed. The effect of coupling for poles and zeros behavior was investigated.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122461771","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 : 2018-07-01DOI: 10.1109/MMET.2018.8460267
Z. Eremenko, E. Kuznetsova, A. I. Shubnyi, A. V. Martunov
The propagation of electromagnetic waves in a circular two-layer metal waveguide with a central low loss dielectric rod surrounded by high loss liquid in the microwave range has been studied. The interaction of the electromagnetic waves with different radial indices has been observed. We have detected owing to a high loss medium, such a waveguide structure does not have a fixed value of cutoff frequencies. We have presented experimental complex permittivity measurement of different water solutions such as liquids food (grape wines/juices) components and also the time interaction of urea-water solution with urease that can find the application in microbiology research. The proposed structure can be applied as a measuring cell for the determination of the complex permittivity of high loss liquids in small volume in wide microwave range from centimeter to millimeter wavelengths.
{"title":"High Loss Liquid in Layered Waveguide at Microwaves and Applications","authors":"Z. Eremenko, E. Kuznetsova, A. I. Shubnyi, A. V. Martunov","doi":"10.1109/MMET.2018.8460267","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460267","url":null,"abstract":"The propagation of electromagnetic waves in a circular two-layer metal waveguide with a central low loss dielectric rod surrounded by high loss liquid in the microwave range has been studied. The interaction of the electromagnetic waves with different radial indices has been observed. We have detected owing to a high loss medium, such a waveguide structure does not have a fixed value of cutoff frequencies. We have presented experimental complex permittivity measurement of different water solutions such as liquids food (grape wines/juices) components and also the time interaction of urea-water solution with urease that can find the application in microbiology research. The proposed structure can be applied as a measuring cell for the determination of the complex permittivity of high loss liquids in small volume in wide microwave range from centimeter to millimeter wavelengths.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127677774","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 : 2018-07-01DOI: 10.1109/MMET.2018.8460332
I. Zavislyak, M. Popov
A rigorous analytical solution for the electrodynamic problem of the T-mode propagation in elliptical coaxial waveguide using modified elliptical coordinate system is presented. The advantage of such approach consists in convenient final expressions for electrodynamic characteristics of the given transmission line, that also allow for simple transition to the specific case of circular coaxial waveguide. Explicit formulae for the characteristic impedance, transmitted power and attenuation constant are given and their dependencies on waveguide's geometrical parameters are graphically analyzed.
{"title":"Modified Elliptical Coordinate System for the T-mode in Elliptical Coaxial Waveguide Eigenproblem","authors":"I. Zavislyak, M. Popov","doi":"10.1109/MMET.2018.8460332","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460332","url":null,"abstract":"A rigorous analytical solution for the electrodynamic problem of the T-mode propagation in elliptical coaxial waveguide using modified elliptical coordinate system is presented. The advantage of such approach consists in convenient final expressions for electrodynamic characteristics of the given transmission line, that also allow for simple transition to the specific case of circular coaxial waveguide. Explicit formulae for the characteristic impedance, transmitted power and attenuation constant are given and their dependencies on waveguide's geometrical parameters are graphically analyzed.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132631623","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 : 2018-07-01DOI: 10.1109/MMET.2018.8460279
D. Nikolayev
Emerging wireless in-body devices pave the way to many breakthroughs in healthcare and clinical research. This technology enables monitoring of physiological parameters while maintaining mobility and freedom of movement of its user. However, establishing reliable communication between an in-body device and external equipment is still a major challenge. The radiation efficiency is constrained by attenuation and reflection losses in tissues. Furthermore, the antennas suffer from impedance detuning issues caused by uncertain electromagnetic properties of body tissues. First, we show that choosing an optimal operating frequency depends on application scenarios and can reduce the losses. Specific designs are then discussed to mitigate the antenna detuning effects due to surrounding biological tissue. Modeling approaches are proposed to lessen the design and optimization complexity. Finally, we present an accurate characterization method of in-body antennas in canonical phantoms using analog fiber optic links.
{"title":"/ Modeling and Characterization of in-Body Antennas","authors":"D. Nikolayev","doi":"10.1109/MMET.2018.8460279","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460279","url":null,"abstract":"Emerging wireless in-body devices pave the way to many breakthroughs in healthcare and clinical research. This technology enables monitoring of physiological parameters while maintaining mobility and freedom of movement of its user. However, establishing reliable communication between an in-body device and external equipment is still a major challenge. The radiation efficiency is constrained by attenuation and reflection losses in tissues. Furthermore, the antennas suffer from impedance detuning issues caused by uncertain electromagnetic properties of body tissues. First, we show that choosing an optimal operating frequency depends on application scenarios and can reduce the losses. Specific designs are then discussed to mitigate the antenna detuning effects due to surrounding biological tissue. Modeling approaches are proposed to lessen the design and optimization complexity. Finally, we present an accurate characterization method of in-body antennas in canonical phantoms using analog fiber optic links.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124748184","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 : 2018-07-01DOI: 10.1109/MMET.2018.8460464
T. Tsaliev, S. Siden, R. Fokin
The topology and main characteristics of a wideband low-profile disc-ring antenna are presented. The main features of the antenna are the wideband properties of the antenna (2.2 … 6 GHz), both by the input impedance and by the directional characteristics. The antenna has relatively small dimensions and is fairly simple to implement.
{"title":"Wideband Low-Profile Disc-Ring Antenna","authors":"T. Tsaliev, S. Siden, R. Fokin","doi":"10.1109/MMET.2018.8460464","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460464","url":null,"abstract":"The topology and main characteristics of a wideband low-profile disc-ring antenna are presented. The main features of the antenna are the wideband properties of the antenna (2.2 … 6 GHz), both by the input impedance and by the directional characteristics. The antenna has relatively small dimensions and is fairly simple to implement.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122004427","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 : 2018-07-01DOI: 10.1109/MMET.2018.8460371
S. A. Stankevich, M. Lubskyi, S. Mosov
The technique for spatial resolution enhancement of natural color aerial image, which utilizes the Bayer filter mosaic native geometrical shift between red and blue image band, is described. The quantitative estimates of demo image resolution enhancement are provided.
{"title":"Natural Color Aerial Imagery Superresolution with Bands Radiometric Conversion","authors":"S. A. Stankevich, M. Lubskyi, S. Mosov","doi":"10.1109/MMET.2018.8460371","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460371","url":null,"abstract":"The technique for spatial resolution enhancement of natural color aerial image, which utilizes the Bayer filter mosaic native geometrical shift between red and blue image band, is described. The quantitative estimates of demo image resolution enhancement are provided.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131723314","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 : 2018-07-01DOI: 10.1109/MMET.2018.8460334
A. Shmat’ko, V. Lysytsya, O. V. Zhuk
The theoretical and algorithmic bases of construction of effective computer models of random surfaces are considered in the given work. A model of sea surface, which changes under the influence of wind has been created. This model does not require much resources for its computer implementation.
{"title":"Computer Simulation and Visualization of Random Dynamical Processes on the Sea Surface by Characteristic Signal Reflection","authors":"A. Shmat’ko, V. Lysytsya, O. V. Zhuk","doi":"10.1109/MMET.2018.8460334","DOIUrl":"https://doi.org/10.1109/MMET.2018.8460334","url":null,"abstract":"The theoretical and algorithmic bases of construction of effective computer models of random surfaces are considered in the given work. A model of sea surface, which changes under the influence of wind has been created. This model does not require much resources for its computer implementation.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"327 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113985524","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 : 2018-07-01DOI: 10.1109/mmet.2018.8460375
E. Velichko
We investigate the plasmon resonances in the scattering and absorption of the TE-polarized light by the solid aluminium wires and tubes of circular cross-section with diameters from nanometers to microns. In the case of tube we keep its thickness at the nanoscale however thick enough to allow using the classical electromagnetics analysis. Here, analytical solution of the scattering problem is applied. To characterize the aluminium complex dielectric permittivity function in the visible range, we use experimental data. Our results show that aluminium wires and nanothin tubes display intensive plasmon resonances in the scattering in the deep ultra-violet range if their radius is less than 50 nm however less bright multipole resonances can be seen even if it is as large as 2 µm.
{"title":"Transverse Plasmon Resonances of Aluminium Circular Wire and Tube","authors":"E. Velichko","doi":"10.1109/mmet.2018.8460375","DOIUrl":"https://doi.org/10.1109/mmet.2018.8460375","url":null,"abstract":"We investigate the plasmon resonances in the scattering and absorption of the TE-polarized light by the solid aluminium wires and tubes of circular cross-section with diameters from nanometers to microns. In the case of tube we keep its thickness at the nanoscale however thick enough to allow using the classical electromagnetics analysis. Here, analytical solution of the scattering problem is applied. To characterize the aluminium complex dielectric permittivity function in the visible range, we use experimental data. Our results show that aluminium wires and nanothin tubes display intensive plasmon resonances in the scattering in the deep ultra-violet range if their radius is less than 50 nm however less bright multipole resonances can be seen even if it is as large as 2 µm.","PeriodicalId":343933,"journal":{"name":"2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129408590","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：