Pub Date : 2016-06-20DOI: 10.1109/MSMW.2016.7538109
A. Guler, C. Boyraz, D. Shulgin, G. Mozzhukhin, B. Rameev
Thermoelectric materials have attracted much attention due to their potential applications in conversion of heat into electrical power or vice versa to cool the heat-generating elements using electrical power. Tetrahedrite is copper antimony sulfosalt mineral with the formula of Cu12Sb4S13, where Cu could be partially replaced by another 3d (Mn, Ag, Al, Cr, Zn, Fe) or other (4d,5d) metal. This group of compounds is very prospective for large-scale thermoelectric applications. The compounds could be represented by common formula of the compound Cu10-xM2-xSb4-yQyS13-zTz. M=Au, Mn, Ag, Al, Cr, Zn, Fe; Q=As, Sn, Zn, Pb; Z=O, Se. The procedure of solid state reaction for tetrahedrite powder samples of various composition have been developed. The single phase tetrahedrite samples of Cu12Sb2As2S13, Cu11.8Au0.2Sb4S13, and Cu10Fe2Sb4S13 have been synthesized as proved by XRD. Characterization of their magnetic properties by VSM PPMS have been done.
{"title":"Synthesis & characterization of tetrahedrite compounds for thermoelectric applications","authors":"A. Guler, C. Boyraz, D. Shulgin, G. Mozzhukhin, B. Rameev","doi":"10.1109/MSMW.2016.7538109","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538109","url":null,"abstract":"Thermoelectric materials have attracted much attention due to their potential applications in conversion of heat into electrical power or vice versa to cool the heat-generating elements using electrical power. Tetrahedrite is copper antimony sulfosalt mineral with the formula of Cu<sub>12</sub>Sb<sub>4</sub>S<sub>13</sub>, where Cu could be partially replaced by another 3d (Mn, Ag, Al, Cr, Zn, Fe) or other (4d,5d) metal. This group of compounds is very prospective for large-scale thermoelectric applications. The compounds could be represented by common formula of the compound Cu<sub>10-x</sub>M<sub>2-x</sub>Sb<sub>4-y</sub>Q<sub>y</sub>S<sub>13-z</sub>Tz. M=Au, Mn, Ag, Al, Cr, Zn, Fe; Q=As, Sn, Zn, Pb; Z=O, Se. The procedure of solid state reaction for tetrahedrite powder samples of various composition have been developed. The single phase tetrahedrite samples of Cu<sub>12</sub>Sb<sub>2</sub>As<sub>2</sub>S<sub>13</sub>, Cu<sub>11.8</sub>Au<sub>0.2</sub>Sb<sub>4</sub>S<sub>13</sub>, and Cu<sub>10</sub>Fe<sub>2</sub>Sb<sub>4</sub>S<sub>13</sub> have been synthesized as proved by XRD. Characterization of their magnetic properties by VSM PPMS have been done.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"75 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80799383","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 : 2016-06-20DOI: 10.1109/MSMW.2016.7538104
R. Golovashchenko, N. K. Zaetz, Y. Ostryzhnyi, A. S. Plevako, V. Derkach
The description of the precision temperature measurement unit for measuring temperature of the investigated samples in the low-temperature dielectrometer in the range of 0.3 - 300 K with an accuracy of 0.05 K is given. Four-wire measurement circuit on an alternating current with use of the semiconductor temperature sensor (semiconductor film resistance thermometer) in the whole temperature range is implemented. The dielectric losses in a number of low-loss materials were measured in the millimeter wavelength range and a wide temperature range by using the designed unit. The example of the temperature dependence of the dielectric loss in gold doped silicon (Si:Au) is given.
{"title":"Precision temperature measurement unit for the low temperature dielectrometer","authors":"R. Golovashchenko, N. K. Zaetz, Y. Ostryzhnyi, A. S. Plevako, V. Derkach","doi":"10.1109/MSMW.2016.7538104","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538104","url":null,"abstract":"The description of the precision temperature measurement unit for measuring temperature of the investigated samples in the low-temperature dielectrometer in the range of 0.3 - 300 K with an accuracy of 0.05 K is given. Four-wire measurement circuit on an alternating current with use of the semiconductor temperature sensor (semiconductor film resistance thermometer) in the whole temperature range is implemented. The dielectric losses in a number of low-loss materials were measured in the millimeter wavelength range and a wide temperature range by using the designed unit. The example of the temperature dependence of the dielectric loss in gold doped silicon (Si:Au) is given.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"59 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91004718","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 : 2016-06-20DOI: 10.1109/MSMW.2016.7538030
I. Kudintseva, A. Nickolaenko, M. Rycroft, A. Odzimek
Apparent discrepancy is discussed between the height profiles of atmospheric conductivity derived from Schumann resonance parameters in the Earth-ionosphere cavity and using the model of the DC global atmospheric electric circuit. The issue is resolved by creating a hybrid profile of these two profiles. Close to the ground, where the resistance of the atmosphere is largest, the properties of the DC global model exert the greatest influence, whereas in the middle atmosphere, at heights between 40 and 100 km, the full wave computations show that the AC results are the more crucial. This globally averaged hybrid profile harmonizes the AC and DC conductivity data, and it might be important for future studies.
{"title":"AC and DC global electric circuit and the height profile of atmospheric conductivity","authors":"I. Kudintseva, A. Nickolaenko, M. Rycroft, A. Odzimek","doi":"10.1109/MSMW.2016.7538030","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538030","url":null,"abstract":"Apparent discrepancy is discussed between the height profiles of atmospheric conductivity derived from Schumann resonance parameters in the Earth-ionosphere cavity and using the model of the DC global atmospheric electric circuit. The issue is resolved by creating a hybrid profile of these two profiles. Close to the ground, where the resistance of the atmosphere is largest, the properties of the DC global model exert the greatest influence, whereas in the middle atmosphere, at heights between 40 and 100 km, the full wave computations show that the AC results are the more crucial. This globally averaged hybrid profile harmonizes the AC and DC conductivity data, and it might be important for future studies.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"72 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90290856","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 : 2016-06-20DOI: 10.1109/MSMW.2016.7538167
L. Filins’kyy
Model of water foam was presented as same layers with different dielectric and structural characteristics. Data of experimental research of dielectric properties ε and tg δ of the water foam specimens was used for calculations in wide microwave band of 8 - 12 GHz. The reflection and transmission characteristics of electromagnetic waves from foam structures with foaming ratio of layers in range from 6 till 350 were calculated. The results show an opportunity to use water foam structures in conditions of electromagnetic influences as absorbers which are able to protect working personnel from dangerous influence of electromagnetic waves.
{"title":"Modelling and calculation of reflection and transmission characteristics from water foam specimens in kind of layered structure","authors":"L. Filins’kyy","doi":"10.1109/MSMW.2016.7538167","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538167","url":null,"abstract":"Model of water foam was presented as same layers with different dielectric and structural characteristics. Data of experimental research of dielectric properties ε and tg δ of the water foam specimens was used for calculations in wide microwave band of 8 - 12 GHz. The reflection and transmission characteristics of electromagnetic waves from foam structures with foaming ratio of layers in range from 6 till 350 were calculated. The results show an opportunity to use water foam structures in conditions of electromagnetic influences as absorbers which are able to protect working personnel from dangerous influence of electromagnetic waves.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"48 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84428288","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 : 2016-06-20DOI: 10.1109/MSMW.2016.7538018
J. Sorocki, I. Piekarz, K. Wincza, S. Gruszczynski
A novel method of dielectric sample detection has been presented. The proposed measurement setup is composed of coupled-line section sensor inserted in-between two identical Marchand baluns, which provide differential excitation to the sensor. The setup allows for measurement of dielectric samples of size as small as separation between sensor's coupled strips. The proposed sensor has been theoretically investigated and confirmed by EM simulations. Additionally, the utilized miniaturized Marchand balun has been manufactured and measured. The obtained results prove the usefulness of the presented approach.
{"title":"Miniaturized microstrip Marchand balun and coupled-line section as microwave sensor for dielectric material detection","authors":"J. Sorocki, I. Piekarz, K. Wincza, S. Gruszczynski","doi":"10.1109/MSMW.2016.7538018","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538018","url":null,"abstract":"A novel method of dielectric sample detection has been presented. The proposed measurement setup is composed of coupled-line section sensor inserted in-between two identical Marchand baluns, which provide differential excitation to the sensor. The setup allows for measurement of dielectric samples of size as small as separation between sensor's coupled strips. The proposed sensor has been theoretically investigated and confirmed by EM simulations. Additionally, the utilized miniaturized Marchand balun has been manufactured and measured. The obtained results prove the usefulness of the presented approach.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"17 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84537222","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 : 2016-06-20DOI: 10.1109/MSMW.2016.7538192
K. G. Zloshchastiev
Using the formal analogy between a certain class of Maxwell equations and the Schrdinger equation, we derive the effective Hamiltonian operator that governs the propagation of electromagnetic (EM) wave modes inside nonconducting linear media, which include a large range of nanophotonic and plasmonic waveguides. It turns out that this Hamiltonian is essentially non-Hermitian, and thus requires a special treatment. We formulate the density operator approach for dynamical systems with non-Hermitian Hamiltonians, and derive a master equation that describes the statistical ensembles of EM wave modes. The method provides a theoretical instrument which can be used when designing the next generation of quantum EM devices for sensitive and non-invasive measurements.
{"title":"Non-Hermitian Hamiltonian approach for electromagnetic wave propagation and dissipation in dielectric media","authors":"K. G. Zloshchastiev","doi":"10.1109/MSMW.2016.7538192","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538192","url":null,"abstract":"Using the formal analogy between a certain class of Maxwell equations and the Schrdinger equation, we derive the effective Hamiltonian operator that governs the propagation of electromagnetic (EM) wave modes inside nonconducting linear media, which include a large range of nanophotonic and plasmonic waveguides. It turns out that this Hamiltonian is essentially non-Hermitian, and thus requires a special treatment. We formulate the density operator approach for dynamical systems with non-Hermitian Hamiltonians, and derive a master equation that describes the statistical ensembles of EM wave modes. The method provides a theoretical instrument which can be used when designing the next generation of quantum EM devices for sensitive and non-invasive measurements.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"14 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82855078","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 : 2016-06-20DOI: 10.1109/MSMW.2016.7538207
K. Lukin, P. Vyplavin, V. Palamarchuk, V. Kudriashov, S. Lukin, P. Sushchenko, N. Zaets, L. Yurchenko, D. Tatyanko, Andriy Shelekhov, O. Zemlyaniy, Yu. A. Shyian
SAR tomography based upon MIMO concept with channels time-division is described and some results of its experimental validation using Ka-band ground based noise waveform SAR are presented. Two different linear synthetic apertures have been used for both transmit and receive antennas oriented in vertical and horizontal directions, respectively. Range resolution in SAR tomography is determined by power spectrum width of the transmitted signal, while its cross-range resolution is defined by 2D aperture dimensions and working wavelength. The approach suggested is applicable for generation of 2D and 3D coherent SAR images and radio-films provided data acquisition and signal processing in real time.
{"title":"Millimeter-wave noise radar tomography","authors":"K. Lukin, P. Vyplavin, V. Palamarchuk, V. Kudriashov, S. Lukin, P. Sushchenko, N. Zaets, L. Yurchenko, D. Tatyanko, Andriy Shelekhov, O. Zemlyaniy, Yu. A. Shyian","doi":"10.1109/MSMW.2016.7538207","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538207","url":null,"abstract":"SAR tomography based upon MIMO concept with channels time-division is described and some results of its experimental validation using Ka-band ground based noise waveform SAR are presented. Two different linear synthetic apertures have been used for both transmit and receive antennas oriented in vertical and horizontal directions, respectively. Range resolution in SAR tomography is determined by power spectrum width of the transmitted signal, while its cross-range resolution is defined by 2D aperture dimensions and working wavelength. The approach suggested is applicable for generation of 2D and 3D coherent SAR images and radio-films provided data acquisition and signal processing in real time.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"93 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74209758","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 : 2016-06-20DOI: 10.1109/MSMW.2016.7538198
M. Legenkiy, A. Butrym
During a pulse signal propagation in a dielectric waveguide pulse surface wave can be excited. This wave represents a “precursor” of wave structure. Above mentioned wave have some parts inside the dielectric rod and near the rod surface. The field distribution for this wave inside the dielectric rod is a rhombus-shape and consists of cones similar to Cherenkov wavefront. A part of this wave propagates in free space near the dielectric surface with the speed of light in free space. This wave propagates along the waveguide with the speed of light in free space as a whole wave structure. Such a guided wave structure differs from conventional waveguide modes since it does not have the same transverse field distribution in any cross-section. First this effect was investigated as a wave structure created by a localized source inside the open dielectric waveguide. The aim of this paper is to consider excitation of such a wave in closed circular waveguide with a dielectric rod and explore the possibility to create some resonance devices using this wave type. For the calculations BOR-FDTD method was used with PML boundary conditions.
{"title":"Pulse surface wave in closed circular waveguide with dielectric rod pulse surface wave","authors":"M. Legenkiy, A. Butrym","doi":"10.1109/MSMW.2016.7538198","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538198","url":null,"abstract":"During a pulse signal propagation in a dielectric waveguide pulse surface wave can be excited. This wave represents a “precursor” of wave structure. Above mentioned wave have some parts inside the dielectric rod and near the rod surface. The field distribution for this wave inside the dielectric rod is a rhombus-shape and consists of cones similar to Cherenkov wavefront. A part of this wave propagates in free space near the dielectric surface with the speed of light in free space. This wave propagates along the waveguide with the speed of light in free space as a whole wave structure. Such a guided wave structure differs from conventional waveguide modes since it does not have the same transverse field distribution in any cross-section. First this effect was investigated as a wave structure created by a localized source inside the open dielectric waveguide. The aim of this paper is to consider excitation of such a wave in closed circular waveguide with a dielectric rod and explore the possibility to create some resonance devices using this wave type. For the calculations BOR-FDTD method was used with PML boundary conditions.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"38 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85199613","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 : 2016-06-20DOI: 10.1109/MSMW.2016.7538083
I. Kuz’michev, V. Yeryomka, A. May
Studied the excitation efficiency of axially asymmetric oscillation TEM10q in an open resonator (OR) with the waveguide wave TE20. Found, that when consistent oscillations excitation in the OR took place, the latter had an angular and frequency selective spectrum. With the proper selection of geometric dimensions of the active coupling elements with the OR, one can provide a high power combining coefficient in the millimeter (mm) and submillimeter (submm) wave ranges.
{"title":"Open resonator for powers combining in the millimeter and submillimeter ranges","authors":"I. Kuz’michev, V. Yeryomka, A. May","doi":"10.1109/MSMW.2016.7538083","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538083","url":null,"abstract":"Studied the excitation efficiency of axially asymmetric oscillation TEM10q in an open resonator (OR) with the waveguide wave TE20. Found, that when consistent oscillations excitation in the OR took place, the latter had an angular and frequency selective spectrum. With the proper selection of geometric dimensions of the active coupling elements with the OR, one can provide a high power combining coefficient in the millimeter (mm) and submillimeter (submm) wave ranges.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"44 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75678897","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 : 2016-06-20DOI: 10.1109/MSMW.2016.7538126
A. Girich, S. Tarapov, O. Kravchuk
Numerically and experimentally demonstrated the appearance of the Tamm States peak in the band gap of a planar photonic crystal. The increasing of quality factor as well as Tamm State frequency falling with rising of inhomogeneity length is demonstrated.
{"title":"Influence of structural inhomogeneity on Tamm State frequency for bounded planar photonic crystal","authors":"A. Girich, S. Tarapov, O. Kravchuk","doi":"10.1109/MSMW.2016.7538126","DOIUrl":"https://doi.org/10.1109/MSMW.2016.7538126","url":null,"abstract":"Numerically and experimentally demonstrated the appearance of the Tamm States peak in the band gap of a planar photonic crystal. The increasing of quality factor as well as Tamm State frequency falling with rising of inhomogeneity length is demonstrated.","PeriodicalId":6504,"journal":{"name":"2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)","volume":"42 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75726416","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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