Pub Date : 2013-06-23DOI: 10.1109/MSMW.2013.6622186
N. Goncharuk, N. Karushkin, V. Malyshko, V. A. Orehovskiy
Present-day technology allows manufacturing of GaAs/AlGaAs heterostructures with layers width down to a nanometer. Time of electron tunneling through AlGaAs potential barrier with such width and height of a few tenths of electron volt is less than a picosecond. It makes possible to create microwave diode on base of the single-barrier nanostructure with electron tunnel injection through AlGaAs potential barrier and electron drift in GaAs transit layer with comparable time delays of electron tunneling and transit. Microwave impedance of the diode we study in framework of small-signal theory but with considering electron injection delay along with transit delay as for resonant-tunneling diode.
{"title":"Submillimeter diode on gallium arsenide nanostructure","authors":"N. Goncharuk, N. Karushkin, V. Malyshko, V. A. Orehovskiy","doi":"10.1109/MSMW.2013.6622186","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622186","url":null,"abstract":"Present-day technology allows manufacturing of GaAs/AlGaAs heterostructures with layers width down to a nanometer. Time of electron tunneling through AlGaAs potential barrier with such width and height of a few tenths of electron volt is less than a picosecond. It makes possible to create microwave diode on base of the single-barrier nanostructure with electron tunnel injection through AlGaAs potential barrier and electron drift in GaAs transit layer with comparable time delays of electron tunneling and transit. Microwave impedance of the diode we study in framework of small-signal theory but with considering electron injection delay along with transit delay as for resonant-tunneling diode.","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":" 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120830703","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 : 2013-06-23DOI: 10.1109/MSMW.2013.6622048
V. Lukin, S. Abramov, R. Kozhemiakin, M. Uss, B. Vozel, K. Chehdi
Essential improvements in quality of original images formed by multichannel (multi- and hyperspectral) sensors have been gained in recent years. In particular, level of thermal noise in acquired images has been sufficiently reduced [1]. However, there are still component (sub-band) images in obtained data for which noise level is quite high [2, 3]. One more peculiarity is that signal-dependent noise component is characterized by dominant contribution [3] for new generation of sensors. Sometimes, the component images with the lowest signal-to-noise ratio (SNR) are ignored at stages of multichannel image classification and interpreting [1, 2]. However, recent studies have demonstrated that useful information can be extracted from “noisy” sub-band images under condition that noise is reduced by an efficient pre-filtering technique [2]. Thus, an actual task is to design such efficient techniques able to cope with signal-dependent noise and to analyze their performance.
{"title":"Denoising efficiency for multichannel images corrupted by signal-dependent noise","authors":"V. Lukin, S. Abramov, R. Kozhemiakin, M. Uss, B. Vozel, K. Chehdi","doi":"10.1109/MSMW.2013.6622048","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622048","url":null,"abstract":"Essential improvements in quality of original images formed by multichannel (multi- and hyperspectral) sensors have been gained in recent years. In particular, level of thermal noise in acquired images has been sufficiently reduced [1]. However, there are still component (sub-band) images in obtained data for which noise level is quite high [2, 3]. One more peculiarity is that signal-dependent noise component is characterized by dominant contribution [3] for new generation of sensors. Sometimes, the component images with the lowest signal-to-noise ratio (SNR) are ignored at stages of multichannel image classification and interpreting [1, 2]. However, recent studies have demonstrated that useful information can be extracted from “noisy” sub-band images under condition that noise is reduced by an efficient pre-filtering technique [2]. Thus, an actual task is to design such efficient techniques able to cope with signal-dependent noise and to analyze their performance.","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126343302","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 : 2013-06-23DOI: 10.1109/MSMW.2013.6622089
I. Dmitrieva
Landau-Lifshitz equation (L-Le) [1] is one of the most important of magnetic resonance theory in ferromagnetic dielectrics [2], and is related to evolutionary class. Representatives of the latter allow to be interpreted as the differential law of development (evolution) of some non stationary phenomenon. L-Le is used not only in the dynamical ferromagnetic processes, but also in paramagnetic and in nuclear magnetism theory as well [2], [3].
{"title":"Explicit solution of the Landau-Lifshitz equation in the case of arbitrary genus of covering","authors":"I. Dmitrieva","doi":"10.1109/MSMW.2013.6622089","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622089","url":null,"abstract":"Landau-Lifshitz equation (L-Le) [1] is one of the most important of magnetic resonance theory in ferromagnetic dielectrics [2], and is related to evolutionary class. Representatives of the latter allow to be interpreted as the differential law of development (evolution) of some non stationary phenomenon. L-Le is used not only in the dynamical ferromagnetic processes, but also in paramagnetic and in nuclear magnetism theory as well [2], [3].","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121797623","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 : 2013-06-23DOI: 10.1109/MSMW.2013.6622026
A. M. Sorochak, V. Kostenko, L. V. Chevnyuk, T. G. Chamor
Self-biased millimeter wave (mm-wave) notch filter consists of a resonator based on single crystal barium hexaferrite (BaFe12O19), which is operated in the multidomain region has been realized and investigated. The filter is designed using the length of dielectric waveguide. Depending on the type of preliminary created regular domain structure in hexaferrite the filter resonance frequency fr can vary in the range of 47-51 GHz, with a maximum rejection at the frequency fr of about 22-24 dB and 3dB-bandwidth of about Δf = 50 MHz. Also, it is shown that the resonance frequency fr of such a filter is tunable in the range of 45-57 GHz by applying a low external DC magnetic biasing fields H0 <; 4πMs to the hexaferrite resonator.
{"title":"Self-biased millimeter wave notch filter based on single crystal hexaferrite resonator with regular domain structure for 45–57 GHz region","authors":"A. M. Sorochak, V. Kostenko, L. V. Chevnyuk, T. G. Chamor","doi":"10.1109/MSMW.2013.6622026","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622026","url":null,"abstract":"Self-biased millimeter wave (mm-wave) notch filter consists of a resonator based on single crystal barium hexaferrite (BaFe<sub>12</sub>O<sub>19</sub>), which is operated in the multidomain region has been realized and investigated. The filter is designed using the length of dielectric waveguide. Depending on the type of preliminary created regular domain structure in hexaferrite the filter resonance frequency f<sub>r</sub> can vary in the range of 47-51 GHz, with a maximum rejection at the frequency f<sub>r</sub> of about 22-24 dB and 3dB-bandwidth of about Δf = 50 MHz. Also, it is shown that the resonance frequency f<sub>r</sub> of such a filter is tunable in the range of 45-57 GHz by applying a low external DC magnetic biasing fields H<sub>0</sub> <; 4πM<sub>s</sub> to the hexaferrite resonator.","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130142652","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 : 2013-06-23DOI: 10.1109/MSMW.2013.6622013
S. Steshenko, S. Prikolotin, D. Kulik, A. Kirilenko, L. Rud, L. Mospan
Waveguide units with coordinate boundaries in the cylindrical coordinate system are widely used in microwave devices based on circular and coaxial waveguides. Besides the universal finite element methods more accurate and efficient algorithms were built for the analysis waveguides of this kind. However, all of the currently available algorithms were developed for the analysis of individual structures of interest, mainly for ridge waveguides. So far the general algorithm suitable for the analysis of any waveguide of this class has not been developed yet. In this paper we eliminate this gap by a generalization of the mode matching technique to the waveguides with coordinate boundaries in the cylindrical coordinate system taking into account field singularities. The final goal was to obtain a tool for fast calculation of the mode spectrum (up to hundreds) as it was previously built for the waveguides with piesewise Cartesian coordinate boundaries.
{"title":"Numerical determination of eigenmodes of an arbitrary waveguide with coordinate boundaries in cylindrical coordinate system","authors":"S. Steshenko, S. Prikolotin, D. Kulik, A. Kirilenko, L. Rud, L. Mospan","doi":"10.1109/MSMW.2013.6622013","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622013","url":null,"abstract":"Waveguide units with coordinate boundaries in the cylindrical coordinate system are widely used in microwave devices based on circular and coaxial waveguides. Besides the universal finite element methods more accurate and efficient algorithms were built for the analysis waveguides of this kind. However, all of the currently available algorithms were developed for the analysis of individual structures of interest, mainly for ridge waveguides. So far the general algorithm suitable for the analysis of any waveguide of this class has not been developed yet. In this paper we eliminate this gap by a generalization of the mode matching technique to the waveguides with coordinate boundaries in the cylindrical coordinate system taking into account field singularities. The final goal was to obtain a tool for fast calculation of the mode spectrum (up to hundreds) as it was previously built for the waveguides with piesewise Cartesian coordinate boundaries.","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130159178","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 : 2013-06-23DOI: 10.1109/MSMW.2013.6622027
E. Prokhorov, O. Botsula, O. A. Reutina
Operation principles of diodes with lateral borders which possess difference mobility have been described earlier. Lateral borders can be represented by tunnel border (TB), resonant-tunnel border (RTB), heteroborder (HB), etc. Diodes with lateral boundaries can be fabricated in a “sandwich” structure, based on n-type semiconductor grown on heavily doped n+ - substrate, or in a planar structure based on n-type semiconductor, grown on semi-insulating (i) substrate.
{"title":"Influence of lateral borders length on current voltage characteristics and oscillation efficiency of planar diode","authors":"E. Prokhorov, O. Botsula, O. A. Reutina","doi":"10.1109/MSMW.2013.6622027","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622027","url":null,"abstract":"Operation principles of diodes with lateral borders which possess difference mobility have been described earlier. Lateral borders can be represented by tunnel border (TB), resonant-tunnel border (RTB), heteroborder (HB), etc. Diodes with lateral boundaries can be fabricated in a “sandwich” structure, based on n-type semiconductor grown on heavily doped n+ - substrate, or in a planar structure based on n-type semiconductor, grown on semi-insulating (i) substrate.","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134088437","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 : 2013-06-23DOI: 10.1109/MSMW.2013.6622204
S. Polevoy, S. Tarapov
The experimental model of the gyrotropic medium for the millimeter wavelength band is designed on the bulk metamaterial - an array of flat chiral rosette-shaped structures. It is shown that the bulk metamaterial under study can rotate the polarization plane of the transmitted wave at quite large angles. Experimentally observed and investigated the region of maximum frequency dispersion of the rotation angle of the incident wave with the plane polarization. It was found that when rotation angle is closely to 90°, the level of the cross-polarization signal does not exceed -8 dB. The chirality parameters for the structures with several values of the length have been calculated. The possibility to control the position of area of the maximal frequency dispersion for polarization plane rotation angle by varying the structure length is demonstrated.
{"title":"Frequency dispersion of the polarization properties of chiral structure in the millimeter waveband","authors":"S. Polevoy, S. Tarapov","doi":"10.1109/MSMW.2013.6622204","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622204","url":null,"abstract":"The experimental model of the gyrotropic medium for the millimeter wavelength band is designed on the bulk metamaterial - an array of flat chiral rosette-shaped structures. It is shown that the bulk metamaterial under study can rotate the polarization plane of the transmitted wave at quite large angles. Experimentally observed and investigated the region of maximum frequency dispersion of the rotation angle of the incident wave with the plane polarization. It was found that when rotation angle is closely to 90°, the level of the cross-polarization signal does not exceed -8 dB. The chirality parameters for the structures with several values of the length have been calculated. The possibility to control the position of area of the maximal frequency dispersion for polarization plane rotation angle by varying the structure length is demonstrated.","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131867022","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 : 2013-06-23DOI: 10.1109/MSMW.2013.6622041
Y. Pedenko
As the optimal solutions choice which corresponds to target can be considered a method in which the target is assigned the angle of elevation that is closest to the direction equal to half the width of antenna pattern formed by the array antenna. Not yielding to the accuracy of other methods of solution choice, it is relatively easy to implement.
{"title":"The choise of solution during measuring the elevation angles of low-altitude targets with use of the root-MUSIC algorithm","authors":"Y. Pedenko","doi":"10.1109/MSMW.2013.6622041","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622041","url":null,"abstract":"As the optimal solutions choice which corresponds to target can be considered a method in which the target is assigned the angle of elevation that is closest to the direction equal to half the width of antenna pattern formed by the array antenna. Not yielding to the accuracy of other methods of solution choice, it is relatively easy to implement.","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127412090","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 : 2013-06-23DOI: 10.1109/MSMW.2013.6622053
V. Sugak, A. Sugak
The phase isoclines close to the plexiglass box location moves down. So it is the criterion of dielectric object presence. The phase isoclines close to the metallic object location moves up. So it is the criterion of metallic object presence. Also we can make conclusion that using both the SAR and phase structure images allows detecting and recognition objects similar a landmine. But in the hard soil conditions the detection probability will be not very high.
{"title":"SFCW GPR sensor with phase processing for landmine detection and recognition","authors":"V. Sugak, A. Sugak","doi":"10.1109/MSMW.2013.6622053","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622053","url":null,"abstract":"The phase isoclines close to the plexiglass box location moves down. So it is the criterion of dielectric object presence. The phase isoclines close to the metallic object location moves up. So it is the criterion of metallic object presence. Also we can make conclusion that using both the SAR and phase structure images allows detecting and recognition objects similar a landmine. But in the hard soil conditions the detection probability will be not very high.","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":"84 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114338597","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 : 2013-06-23DOI: 10.1109/MSMW.2013.6622185
V. Derkach, R. Golovashchenko, N. K. Zaetz, V. Korzh, A. S. Plevako, S. Tarapov
To meet requirements, which arise while design of equipment for research the dielectric parameters of low-loss materials in the millimeter waveband, the necessity of high-precision temperature stabilization and measurement appear. Despite the fact that a lot of attention [1,2] is devoted to this task already, it reminds still actual, due to a plenty of specific features, which each given measuring complex possess.Thermometers intended to measure low and very low temperatures, as a rule use the temperature dependence of certain physical properties of basis substances. There is known quite large amount of temperature controllers [3-6], which are able to operate in a wide temperature range. However, some of them operate in direct current DC-mode [4], and others, which are used AC-mode, intended for operation in too narrow temperature range ≈ 1 K [3, 6]. Besides, they are able to use only one type of sensor and possess, in our opinion, too complicated feedback scheme for the temperature stabilization [5]. In this paper we consider the scheme of the temperature regulator-stabilizer with two temperature sensors having both positive and negative temperature coefficients of resistance (TCR). It designed for low temperature measurements on the cryodielectrometer “TORNADO” in the temperature range 0.5-300 K. As well results of the low-temperature radiospectroscopy experiment using the device designed are given.
{"title":"Temperature control and stabilization in the cryodielectrometer for temperatures 0.5 – 300 K","authors":"V. Derkach, R. Golovashchenko, N. K. Zaetz, V. Korzh, A. S. Plevako, S. Tarapov","doi":"10.1109/MSMW.2013.6622185","DOIUrl":"https://doi.org/10.1109/MSMW.2013.6622185","url":null,"abstract":"To meet requirements, which arise while design of equipment for research the dielectric parameters of low-loss materials in the millimeter waveband, the necessity of high-precision temperature stabilization and measurement appear. Despite the fact that a lot of attention [1,2] is devoted to this task already, it reminds still actual, due to a plenty of specific features, which each given measuring complex possess.Thermometers intended to measure low and very low temperatures, as a rule use the temperature dependence of certain physical properties of basis substances. There is known quite large amount of temperature controllers [3-6], which are able to operate in a wide temperature range. However, some of them operate in direct current DC-mode [4], and others, which are used AC-mode, intended for operation in too narrow temperature range ≈ 1 K [3, 6]. Besides, they are able to use only one type of sensor and possess, in our opinion, too complicated feedback scheme for the temperature stabilization [5]. In this paper we consider the scheme of the temperature regulator-stabilizer with two temperature sensors having both positive and negative temperature coefficients of resistance (TCR). It designed for low temperature measurements on the cryodielectrometer “TORNADO” in the temperature range 0.5-300 K. As well results of the low-temperature radiospectroscopy experiment using the device designed are given.","PeriodicalId":104362,"journal":{"name":"2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114589012","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}
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