Pub Date : 2010-06-21DOI: 10.1109/MSMW.2010.5546124
A. Boriskin, R. Sauleau
Paper describes designing procedure of dielectric lens antennas (DLA) for multibeam applications. Two configurations of DLAs are considered, namely: two-shell circularly-layered lens excited by a horn antenna and shaped homogeneous flat-bottom lens excited by an array of printed feeds. Synthesis of the antennas is carried out in the 2-D formulation using highly-efficient in-house softwares based on rigorous mathematical approaches (Mie-type series solution for the former and Muller's boundary integral equations for the latter). It is demonstrated that simultaneous optimization of lens and feeding structure parameters enables one to design a beam-switching DLA with improve performance characteristics (boresight directivity and steering ability) using standard low-loss dielectric materials.
{"title":"Design of dielectric lens antennas for multibeam applications","authors":"A. Boriskin, R. Sauleau","doi":"10.1109/MSMW.2010.5546124","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546124","url":null,"abstract":"Paper describes designing procedure of dielectric lens antennas (DLA) for multibeam applications. Two configurations of DLAs are considered, namely: two-shell circularly-layered lens excited by a horn antenna and shaped homogeneous flat-bottom lens excited by an array of printed feeds. Synthesis of the antennas is carried out in the 2-D formulation using highly-efficient in-house softwares based on rigorous mathematical approaches (Mie-type series solution for the former and Muller's boundary integral equations for the latter). It is demonstrated that simultaneous optimization of lens and feeding structure parameters enables one to design a beam-switching DLA with improve performance characteristics (boresight directivity and steering ability) using standard low-loss dielectric materials.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114701676","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 : 2010-06-21DOI: 10.1109/MSMW.2010.5546115
O. Ovsyannikova, A. Shishkova, N. Gorobets
The thorough investigation of the distribution of electromagnetic radiation in the near-field reactive region of square aperture with different amplitude illumination laws was carried out. It has been shown, that extension of reactive field region significantly depends on the illumination law especially for small radiators. The ratio between the reactive and active power density has been calculated and analyzed at different planes in near-field region as well as along the axis normal to radiator aperture. It has been shown that, the reactive component of power flux density was absent in all planes of observation in sections |x|=|y| for the uniform amplitude distribution. The pattern of the spatial distribution of reactive power component is symmetric with respect to sections |x|=|y|.
{"title":"Distribution of reactive power density in the near-field region of aperture antennas with different illumination laws","authors":"O. Ovsyannikova, A. Shishkova, N. Gorobets","doi":"10.1109/MSMW.2010.5546115","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546115","url":null,"abstract":"The thorough investigation of the distribution of electromagnetic radiation in the near-field reactive region of square aperture with different amplitude illumination laws was carried out. It has been shown, that extension of reactive field region significantly depends on the illumination law especially for small radiators. The ratio between the reactive and active power density has been calculated and analyzed at different planes in near-field region as well as along the axis normal to radiator aperture. It has been shown that, the reactive component of power flux density was absent in all planes of observation in sections |x|=|y| for the uniform amplitude distribution. The pattern of the spatial distribution of reactive power component is symmetric with respect to sections |x|=|y|.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123118152","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 : 2010-06-21DOI: 10.1109/MSMW.2010.5546012
E. Ramos, V. Ponomaryov
It has been demonstrated that it is possible to reconstruct 3D video sequences using depth information. Novel framework can be realized in all formats in video sequences because it does not depend on a specific hardware usually needed in existed techniques for depth map calculations. Proposed technique is applicable in other methods of 3D perception, such as polarized lens, etc. The applications of the proposed method can be useful in areas: real time 3D remote sensing, robot navigation, or 3D medical visual demonstrations.
{"title":"Reconstruction of three-dimensional objects using video sequences","authors":"E. Ramos, V. Ponomaryov","doi":"10.1109/MSMW.2010.5546012","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546012","url":null,"abstract":"It has been demonstrated that it is possible to reconstruct 3D video sequences using depth information. Novel framework can be realized in all formats in video sequences because it does not depend on a specific hardware usually needed in existed techniques for depth map calculations. Proposed technique is applicable in other methods of 3D perception, such as polarized lens, etc. The applications of the proposed method can be useful in areas: real time 3D remote sensing, robot navigation, or 3D medical visual demonstrations.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123414254","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 : 2010-06-21DOI: 10.1109/MSMW.2010.5546005
Y. Suarez-Hernandez, Duchen Gonzalo, Ponomaryov Volodymyr
The recognizing of cancer in mammograms implemented on the FPGA platform is pretty much similar than PC result evaluation. With less than 0.6% error, this program can be used in other image processing applications that require the neural networks employment with good results in characteristic recognizing of the images.
{"title":"Recognition FPGA system for detection of anomalies in mammograms","authors":"Y. Suarez-Hernandez, Duchen Gonzalo, Ponomaryov Volodymyr","doi":"10.1109/MSMW.2010.5546005","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546005","url":null,"abstract":"The recognizing of cancer in mammograms implemented on the FPGA platform is pretty much similar than PC result evaluation. With less than 0.6% error, this program can be used in other image processing applications that require the neural networks employment with good results in characteristic recognizing of the images.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124282330","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 : 2010-06-21DOI: 10.1109/MSMW.2010.5546153
V. Bezruk, E. Belov, O. Voitovych, G. Rudnev, G. Khlopov, S. Homenko
1. The algorithm of radar recognition of meteorological objects on the base of autoregressive model is proposed. 2. The measurement complex is developed on the base of the modernized incoherent pulse meteorological radar MRL-1 and experimental study of the signal reflected from various meteorological objects are performed, including high-altitude cumulus clouds, some worse for cumulonimbus clouds and not satisfactory for the “angel-echo” which are formed by Bragg reflections from inhomogeneities in surface layer of a clear atmosphere. 3. It is shown that the probability of correct recognition is extremely high >0,95 for high-altitude cumulus clouds even in the case of small AR model order and the probability is some worse for cumulonimbus clouds. 4. In the case of the “angel-echo” the probability of correct recognition is lowest because diffuse scattering from the “angel-echo” cannot be satisfactory described by a set of harmonic oscillations which are typical for the AR model.
{"title":"Radar identification of clouds","authors":"V. Bezruk, E. Belov, O. Voitovych, G. Rudnev, G. Khlopov, S. Homenko","doi":"10.1109/MSMW.2010.5546153","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546153","url":null,"abstract":"1. The algorithm of radar recognition of meteorological objects on the base of autoregressive model is proposed. 2. The measurement complex is developed on the base of the modernized incoherent pulse meteorological radar MRL-1 and experimental study of the signal reflected from various meteorological objects are performed, including high-altitude cumulus clouds, some worse for cumulonimbus clouds and not satisfactory for the “angel-echo” which are formed by Bragg reflections from inhomogeneities in surface layer of a clear atmosphere. 3. It is shown that the probability of correct recognition is extremely high >0,95 for high-altitude cumulus clouds even in the case of small AR model order and the probability is some worse for cumulonimbus clouds. 4. In the case of the “angel-echo” the probability of correct recognition is lowest because diffuse scattering from the “angel-echo” cannot be satisfactory described by a set of harmonic oscillations which are typical for the AR model.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126332365","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 : 2010-06-21DOI: 10.1109/MSMW.2010.5546057
A. Koval
The heliograph of radio decameter wavelengths started to be created and developed else in 1976 on the base of antenna system UTR-2 (Ukrainian T-shaped radio telescope). Basically, the main features of the heliograph are determined by the characteristics of UTR-2. To observe stars, Sun, planets and others within the frequency range 10 – 30 MHz, the radio telescope forms five independent pencil-shaped beams with angular width 25′ × 25′. The scanning of sky area is provided discretely in declination and hour angle. The sensitivity of heliograph is about 104 Jy (1 Jy = 10−26 W/m2/Hz). At first the radio astronomy observations by the radio telescope UTR-2 (and the heliograph too) were carried out at a few discrete frequencies. This led to difficulties in distinguishing solar burst features (for example, fine structure of the solar Type II bursts and so on) with confidence. Last time the facilities of radio telescope UTR-2 have been essentially extended due to an effective broadband telescope amplifier system and a new back-end. Now the observations are conducted by means of the DSP (digital spectrum processor) in the frequency band of 16.5 MHz divided on 4096 channels. Therefore, the basic scheme of the heliograph and its properties have been improved.
{"title":"Heliograph of radio decameter wavelengths","authors":"A. Koval","doi":"10.1109/MSMW.2010.5546057","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546057","url":null,"abstract":"The heliograph of radio decameter wavelengths started to be created and developed else in 1976 on the base of antenna system UTR-2 (Ukrainian T-shaped radio telescope). Basically, the main features of the heliograph are determined by the characteristics of UTR-2. To observe stars, Sun, planets and others within the frequency range 10 – 30 MHz, the radio telescope forms five independent pencil-shaped beams with angular width 25′ × 25′. The scanning of sky area is provided discretely in declination and hour angle. The sensitivity of heliograph is about 104 Jy (1 Jy = 10−26 W/m2/Hz). At first the radio astronomy observations by the radio telescope UTR-2 (and the heliograph too) were carried out at a few discrete frequencies. This led to difficulties in distinguishing solar burst features (for example, fine structure of the solar Type II bursts and so on) with confidence. Last time the facilities of radio telescope UTR-2 have been essentially extended due to an effective broadband telescope amplifier system and a new back-end. Now the observations are conducted by means of the DSP (digital spectrum processor) in the frequency band of 16.5 MHz divided on 4096 channels. Therefore, the basic scheme of the heliograph and its properties have been improved.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122019968","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 : 2010-06-21DOI: 10.1109/MSMW.2010.5546019
V. Baryshevsky, E. Gurnevich
Photonic crystals, formed by the periodically strained parallel metallic threads, can be used (and already are in use) in the most various applications, first of all for microwave antenna applications [1]. Moreover, such structures are applied as resonators in volume free electron lasers (VFEL) [2].
{"title":"The possibility of Cherenkov radiation generation in a photonic crystal formed by parallel metallic threads","authors":"V. Baryshevsky, E. Gurnevich","doi":"10.1109/MSMW.2010.5546019","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546019","url":null,"abstract":"Photonic crystals, formed by the periodically strained parallel metallic threads, can be used (and already are in use) in the most various applications, first of all for microwave antenna applications [1]. Moreover, such structures are applied as resonators in volume free electron lasers (VFEL) [2].","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121338632","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 : 2010-06-21DOI: 10.1109/MSMW.2010.5545999
D. Churikov
In this report, the application of the analytical Kravchenko wavelets for the digital UWB signal processing is proposed and justified. A numerical experiment carried out and also an analysis of physical results show potential opportunities arising from application of the suggested and proved wavelets into problems of digital ultra wideband signal processing.
{"title":"Analytical Kravchenko wavelets in the digital UWB signal processing","authors":"D. Churikov","doi":"10.1109/MSMW.2010.5545999","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5545999","url":null,"abstract":"In this report, the application of the analytical Kravchenko wavelets for the digital UWB signal processing is proposed and justified. A numerical experiment carried out and also an analysis of physical results show potential opportunities arising from application of the suggested and proved wavelets into problems of digital ultra wideband signal processing.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127070641","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 : 2010-06-21DOI: 10.1109/MSMW.2010.5545987
V. Denysenkov, V. K. Kiseliov, M. Prandolini, M. Gafurov, A. Krahn, F. Engelke, V. Bezborodov, Y. Kuleshov, P. Nesterov, M. S. Yanovsky, T. Prisner
Transmission of microwave signals under low-losses conditions is highly demanding task in sub-mm EPR and DNP spectroscopy. We have designed and built a quasioptical setup in the Michelson interferometer configuration using oversized metallo-dielectric waveguides (MDW) of a square-shape cross-section and components such as attenuators, beam splitters, wavemeter, tapers to fundamental TE10 mode which have extremely low losses in sub-mm wave range. Following features of the setup such as total transmission losses below 2 dB from the source port to a resonator with a sample inside the cryomagnet; fine balance tuning between signal and reference channels affording up to 36 dB background signal suppression, linear-to-circular polarization conversion with a possibility to tune its phase, which allows effective suppression of reflected signal with respect to induction signal; switching between two microwave sources; and high power handling up to 20 Watt helped to reach high performance of the 9.2 Tesla DNP/NMR/EPR spectrometer. First liquid-state DNP results on nitroxide radicals in water will be presented.
{"title":"260 GHz quasioptical setup for EPR and DNP experiments on the 9.2 Tesla DNP/NMR/EPR spectrometer","authors":"V. Denysenkov, V. K. Kiseliov, M. Prandolini, M. Gafurov, A. Krahn, F. Engelke, V. Bezborodov, Y. Kuleshov, P. Nesterov, M. S. Yanovsky, T. Prisner","doi":"10.1109/MSMW.2010.5545987","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5545987","url":null,"abstract":"Transmission of microwave signals under low-losses conditions is highly demanding task in sub-mm EPR and DNP spectroscopy. We have designed and built a quasioptical setup in the Michelson interferometer configuration using oversized metallo-dielectric waveguides (MDW) of a square-shape cross-section and components such as attenuators, beam splitters, wavemeter, tapers to fundamental TE10 mode which have extremely low losses in sub-mm wave range. Following features of the setup such as total transmission losses below 2 dB from the source port to a resonator with a sample inside the cryomagnet; fine balance tuning between signal and reference channels affording up to 36 dB background signal suppression, linear-to-circular polarization conversion with a possibility to tune its phase, which allows effective suppression of reflected signal with respect to induction signal; switching between two microwave sources; and high power handling up to 20 Watt helped to reach high performance of the 9.2 Tesla DNP/NMR/EPR spectrometer. First liquid-state DNP results on nitroxide radicals in water will be presented.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127134876","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 : 2010-06-21DOI: 10.1109/MSMW.2010.5545985
V. V. Meriakri, E. E. Chigray, I. P. Nikitin, L. Pan, R. Pan, M. Parkhomenko
In [1] the dielectric properties of liquid crystals (LCs) of homological series n·CB (n = 5, 6, 7, 8) were measured in the millimeter -wave (MMW) range (frequencies 50–70 GHz) using. Here we describe the new method for measuring these properties and an experimental setup that implements this method at wavelengths of about 2 mm (frequencies from 130 to 180 GHz). These samples were investigated also at frequency of 0.6 THz with help Time Domain Spectroscopy method. The new method employs the Michelson interferometer (IM) designed on a quasi-optic square metal-dielectric waveguide of cross section 20 × 20 mm [2] (Figure1).
{"title":"Measurement of dielectric properties of liquid ctystals in the millimeter and THz ranges","authors":"V. V. Meriakri, E. E. Chigray, I. P. Nikitin, L. Pan, R. Pan, M. Parkhomenko","doi":"10.1109/MSMW.2010.5545985","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5545985","url":null,"abstract":"In [1] the dielectric properties of liquid crystals (LCs) of homological series n·CB (n = 5, 6, 7, 8) were measured in the millimeter -wave (MMW) range (frequencies 50–70 GHz) using. Here we describe the new method for measuring these properties and an experimental setup that implements this method at wavelengths of about 2 mm (frequencies from 130 to 180 GHz). These samples were investigated also at frequency of 0.6 THz with help Time Domain Spectroscopy method. The new method employs the Michelson interferometer (IM) designed on a quasi-optic square metal-dielectric waveguide of cross section 20 × 20 mm [2] (Figure1).","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124024598","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：