Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037149
Fabiola Sapienza, G. Bacci, F. Giannetti, V. Lottici, A. Colicelli, A. Vaccaro, M. Gammone, Nicola Davini, O. Picchi, Giovanni Serafino, F. Caparrini, A. Antonini, A. Mazza, S. Melani, A. Ortolani, E. Adirosi, L. Baldini, G. Rallo, F. Policelli, G. Huffman
This paper presents a practical application of an opportunistic technique for the estimation of rainfall intensity and accumulated precipitation. The proposed technique is based upon signal strength measurements made by commercial-grade interactive satellite terminals. By applying some processing, the rain-induced attenuation on the microwave downlink from the satellite is first evaluated; then the rain attenuation is eventually mapped into a rainfall rate estimate via a tropospheric model. This methodology has been applied to a test area of 30 ×30 km2 around the city of Dortmund (North Rhine-Westphalia, upper basin of Ermscher river), for the heavy rain event that devastated western Germany in July, 2021. A rainfall map on this area is obtained from the measurements collected by a set of satellite terminals deployed in the region, and successfully compared with a map obtained with a conventional weather radar.
{"title":"Rainfall Field Reconstruction by Opportunistic Use of the Rain-Induced Attenuation on Microwave Satellite Signals: The July 2021 Extreme Rain Event in Germany as a Case Study","authors":"Fabiola Sapienza, G. Bacci, F. Giannetti, V. Lottici, A. Colicelli, A. Vaccaro, M. Gammone, Nicola Davini, O. Picchi, Giovanni Serafino, F. Caparrini, A. Antonini, A. Mazza, S. Melani, A. Ortolani, E. Adirosi, L. Baldini, G. Rallo, F. Policelli, G. Huffman","doi":"10.1109/UkrMW58013.2022.10037149","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037149","url":null,"abstract":"This paper presents a practical application of an opportunistic technique for the estimation of rainfall intensity and accumulated precipitation. The proposed technique is based upon signal strength measurements made by commercial-grade interactive satellite terminals. By applying some processing, the rain-induced attenuation on the microwave downlink from the satellite is first evaluated; then the rain attenuation is eventually mapped into a rainfall rate estimate via a tropospheric model. This methodology has been applied to a test area of 30 ×30 km2 around the city of Dortmund (North Rhine-Westphalia, upper basin of Ermscher river), for the heavy rain event that devastated western Germany in July, 2021. A rainfall map on this area is obtained from the measurements collected by a set of satellite terminals deployed in the region, and successfully compared with a map obtained with a conventional weather radar.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115430525","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 : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037126
O. Manko, Oleksiy Konovalov, L. Kharlai, Yuliia Sotnichenko, N. Kunah
The principle of construction of wide-band self-controlled power limiters mm - wavelength range is proposed in the work. The operating range, which includes the 28 GHz and 38 GHz frequency range used by 5G technology, is considered. Losses of the limiter in the small signal mode in this range do not exceed 2 dB. At the same time, the attenuation in the high-power input signal mode is about 30 dB in the entire range of operating frequencies. Methods of calculating the characteristics of self-controlled power limiters are provided. Ways to optimize their design are considered. A similar construction of the limiter can be used in the 60 GHz frequency range, which is also used by 5G technology.
{"title":"Features of the Application of Protective Devices in 5G Technology","authors":"O. Manko, Oleksiy Konovalov, L. Kharlai, Yuliia Sotnichenko, N. Kunah","doi":"10.1109/UkrMW58013.2022.10037126","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037126","url":null,"abstract":"The principle of construction of wide-band self-controlled power limiters mm - wavelength range is proposed in the work. The operating range, which includes the 28 GHz and 38 GHz frequency range used by 5G technology, is considered. Losses of the limiter in the small signal mode in this range do not exceed 2 dB. At the same time, the attenuation in the high-power input signal mode is about 30 dB in the entire range of operating frequencies. Methods of calculating the characteristics of self-controlled power limiters are provided. Ways to optimize their design are considered. A similar construction of the limiter can be used in the 60 GHz frequency range, which is also used by 5G technology.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131596641","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 : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037055
T. Gavasheli, G. Mamniashvili, G. Ghvedashvili, T. Gegechkori
The pinning force of domain walls was studied by the NMR two-pulse spin-echo method using the action of an additional magnetic video-pulse. It is shown that the pinning force value Ho is inversely proportional to the duration $tau_{mathrm{m}}$ of the magnetic video-pulse. In addition, the area of the magnetic video-pulse $A_{m}=H_{0} tau_{m}$ turned out to be the constant for all threshold durations of the magnetic video-pulse. The dependence of the pinning force $H_{0}$ on the external magnetic field $H_{mathrm{e}}$ is also studied. It is shown that up to 3 kOe, a linear dependence of $H_{0}$ on $H_{mathrm{e}}$ is observed. This indicates that, as $H_{mathrm{e}}$ increases, the domain walls are distributed over positions corresponding to the stronger pinning centers.
{"title":"NMR Spin-Echo Study of the Domain Wall Pinning in Cobalt Micropowders","authors":"T. Gavasheli, G. Mamniashvili, G. Ghvedashvili, T. Gegechkori","doi":"10.1109/UkrMW58013.2022.10037055","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037055","url":null,"abstract":"The pinning force of domain walls was studied by the NMR two-pulse spin-echo method using the action of an additional magnetic video-pulse. It is shown that the pinning force value Ho is inversely proportional to the duration $tau_{mathrm{m}}$ of the magnetic video-pulse. In addition, the area of the magnetic video-pulse $A_{m}=H_{0} tau_{m}$ turned out to be the constant for all threshold durations of the magnetic video-pulse. The dependence of the pinning force $H_{0}$ on the external magnetic field $H_{mathrm{e}}$ is also studied. It is shown that up to 3 kOe, a linear dependence of $H_{0}$ on $H_{mathrm{e}}$ is observed. This indicates that, as $H_{mathrm{e}}$ increases, the domain walls are distributed over positions corresponding to the stronger pinning centers.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127532828","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 : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037027
L. Grishchenko, V. A. Moiseienko, V. Malyshev, I. Matushko, V. Kuryliuk, A. Vakaliuk, O. Mischanchuk, O. Boldyrieva, Vladyslav V. Lisnyak, V. Diyuk
Here we reported the effect of the amination of the brominated polyacrylonitrile carbon fibers (PAN CFs) on the efficiency of absorption of electromagnetic radiation studied for the X- and Ka-bands. The fiber modification was carried out by bromination with bromine liquid followed by amination with one of the amines: ethylenediamine (En), sulfolanylethylenediamine (SuEn), diethylamine (Et2N), monoethanolamine (MEA), and piperazine (Py). The amination caused the replacement of attached bromine groups with amino groups. The thermal desorption properties of the prepared PAN CFs were investigated using TGA and TPD MS methods. Thermal desorption of the products of amino groups decomposition from the surface of PAN CFs ranges from 140 to 415 °C with maxima at 240–258 °C depending on the modifying amine and the surface concentration of the amino groups. For the X-band, the type of amine used is not of significant importance, and the value of the absorption for electromagnetic radiation does not exceed −18 dB. In the Ka range, the brominated PAN CFs modified with Py, En, and SuEn reduce the electromagnetic radiation by about −19 dB, −23 dB, and −28 dB, correspondingly. From all the above, it is clear that the brominated PAN CFs modified with amines have a perspective for use as a protective material against the harmful effects of electromagnetic radiation on biological tissues in the Ka-band frequency range. By choice of amine modifier, the absorption magnitude can be regulated when forming a surface protective-and-absorptive layer.
{"title":"Electromagnetic Microwave Absorption Performances of Aminated Carbon Fibers","authors":"L. Grishchenko, V. A. Moiseienko, V. Malyshev, I. Matushko, V. Kuryliuk, A. Vakaliuk, O. Mischanchuk, O. Boldyrieva, Vladyslav V. Lisnyak, V. Diyuk","doi":"10.1109/UkrMW58013.2022.10037027","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037027","url":null,"abstract":"Here we reported the effect of the amination of the brominated polyacrylonitrile carbon fibers (PAN CFs) on the efficiency of absorption of electromagnetic radiation studied for the X- and Ka-bands. The fiber modification was carried out by bromination with bromine liquid followed by amination with one of the amines: ethylenediamine (En), sulfolanylethylenediamine (SuEn), diethylamine (Et2N), monoethanolamine (MEA), and piperazine (Py). The amination caused the replacement of attached bromine groups with amino groups. The thermal desorption properties of the prepared PAN CFs were investigated using TGA and TPD MS methods. Thermal desorption of the products of amino groups decomposition from the surface of PAN CFs ranges from 140 to 415 °C with maxima at 240–258 °C depending on the modifying amine and the surface concentration of the amino groups. For the X-band, the type of amine used is not of significant importance, and the value of the absorption for electromagnetic radiation does not exceed −18 dB. In the Ka range, the brominated PAN CFs modified with Py, En, and SuEn reduce the electromagnetic radiation by about −19 dB, −23 dB, and −28 dB, correspondingly. From all the above, it is clear that the brominated PAN CFs modified with amines have a perspective for use as a protective material against the harmful effects of electromagnetic radiation on biological tissues in the Ka-band frequency range. By choice of amine modifier, the absorption magnitude can be regulated when forming a surface protective-and-absorptive layer.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123032954","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 : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037150
Luny Vesperum, A. Bulashenko, S. Piltyay, V. Potapenko, H. Matkovska, Vitalina Dmytrenko
In present work, a theoretical and computer-aided studies of a waveguide phase shifter for the frequency band 7.5-8.5 GHz were carried out. Frequency dependences of phase differential at the external port of the device, the standing wave coefficient and the voltage were analyzed, respectively, for a phase of 45 and 90 degrees. A theoretical analysis of the basic performances of a phase-shifting device that was created on the basis of a rectangular guide with conductiong diaphragms has been carried out. The design and characteristics of the phase shifter were given to obtain a phase shift of 45 and 90 degrees. It has been shown that designs of such devices that consist of several such sections have sufficiently effective characteristics. The paper demonstrates a comparison of the numerical dependences of the developed phase-shifting device obtained by FEM, FDTD and wave matrix methods. Proposed designs of phase shifters can be used for modern telecommunication systems for transmitting and processing information.
{"title":"FEM, FDTD and Wave Matrix Methods Application for Modeling of Phase Shifting Devices Based on a Waveguide with Diaphragms","authors":"Luny Vesperum, A. Bulashenko, S. Piltyay, V. Potapenko, H. Matkovska, Vitalina Dmytrenko","doi":"10.1109/UkrMW58013.2022.10037150","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037150","url":null,"abstract":"In present work, a theoretical and computer-aided studies of a waveguide phase shifter for the frequency band 7.5-8.5 GHz were carried out. Frequency dependences of phase differential at the external port of the device, the standing wave coefficient and the voltage were analyzed, respectively, for a phase of 45 and 90 degrees. A theoretical analysis of the basic performances of a phase-shifting device that was created on the basis of a rectangular guide with conductiong diaphragms has been carried out. The design and characteristics of the phase shifter were given to obtain a phase shift of 45 and 90 degrees. It has been shown that designs of such devices that consist of several such sections have sufficiently effective characteristics. The paper demonstrates a comparison of the numerical dependences of the developed phase-shifting device obtained by FEM, FDTD and wave matrix methods. Proposed designs of phase shifters can be used for modern telecommunication systems for transmitting and processing information.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122579471","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 : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037002
N. Ruzhentsev, S. Zhyla, V. Pavlikov, Valeriy Volosyuk, G. Cherepnin, V. Kosharskyi
The optimal design and efficient operation of unmanned aerial vehicle (UAV) detection systems require the ability to adequately predict the expected contrast values of target types of interest and their weather stability in different wavebands. This work is devoted to the experimental and theoretical study of the contrasts of various types of small UAV in the CM and MM wavelength ranges (WR) in relation to systems operating in the passive radiothermal location mode.
{"title":"UAV Radio Thermal Contrasts in MM and CM Wavelength Ranges","authors":"N. Ruzhentsev, S. Zhyla, V. Pavlikov, Valeriy Volosyuk, G. Cherepnin, V. Kosharskyi","doi":"10.1109/UkrMW58013.2022.10037002","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037002","url":null,"abstract":"The optimal design and efficient operation of unmanned aerial vehicle (UAV) detection systems require the ability to adequately predict the expected contrast values of target types of interest and their weather stability in different wavebands. This work is devoted to the experimental and theoretical study of the contrasts of various types of small UAV in the CM and MM wavelength ranges (WR) in relation to systems operating in the passive radiothermal location mode.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128972680","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 : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037110
N. Yeliseyeva, S. Berdnik, N. Gorobets
The directional and polarization 3D patterns of the field of two orthogonal in-phase excited pairs of pairwise parallel impedance dipoles placed parallel to a square screen have been calculated and analyzed based on personally developed software. The radiators are considered at certain values of dipoles surface impedances providing the maximum of the field modulus square or the circularly polarized field in the normal to the screen. It is found that in the case of the circularly polarized radiator with optimal distances between dipoles and screen sizes, the spatial power patterns to relative level of -20dB and distribution of the field ellipticity coefficient have axial symmetry in the range of observation angles up to 70° and ±45°, when ellipticity coefficient is more 0.8. In the main observation planes the main lobes of the orthogonal field components patterns coincide up to 70° to relative level of - 20dB and the ellipticity coefficient at the same time is 1…0.9.
{"title":"Directional and Polarization Patterns of Four Impedance Dipoles Placed Parallel to Screen","authors":"N. Yeliseyeva, S. Berdnik, N. Gorobets","doi":"10.1109/UkrMW58013.2022.10037110","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037110","url":null,"abstract":"The directional and polarization 3D patterns of the field of two orthogonal in-phase excited pairs of pairwise parallel impedance dipoles placed parallel to a square screen have been calculated and analyzed based on personally developed software. The radiators are considered at certain values of dipoles surface impedances providing the maximum of the field modulus square or the circularly polarized field in the normal to the screen. It is found that in the case of the circularly polarized radiator with optimal distances between dipoles and screen sizes, the spatial power patterns to relative level of -20dB and distribution of the field ellipticity coefficient have axial symmetry in the range of observation angles up to 70° and ±45°, when ellipticity coefficient is more 0.8. In the main observation planes the main lobes of the orthogonal field components patterns coincide up to 70° to relative level of - 20dB and the ellipticity coefficient at the same time is 1…0.9.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124807212","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 : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037021
M. Andriychuk, V. Tkachuk
The study of radiation properties of a focusing radiating system is conducted by the numerical modeling and obtaining the experimental data. The geometrical and physical parameters of system are chosen in such a way to satisfy the quasioptical conditions. The reflection and transmission coefficients are optimized in order to get the radiation in a far zone as close as possible to a desired one. The total radiation pattern (RP) is calculated as sum of the RPs of separate elements of array. The experimental data at the range of low GHz frequencies testify about the possibility to extend approach proposed for higher frequencies.
{"title":"Numerical and Experimental Study of Focusing Radiating Array","authors":"M. Andriychuk, V. Tkachuk","doi":"10.1109/UkrMW58013.2022.10037021","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037021","url":null,"abstract":"The study of radiation properties of a focusing radiating system is conducted by the numerical modeling and obtaining the experimental data. The geometrical and physical parameters of system are chosen in such a way to satisfy the quasioptical conditions. The reflection and transmission coefficients are optimized in order to get the radiation in a far zone as close as possible to a desired one. The total radiation pattern (RP) is calculated as sum of the RPs of separate elements of array. The experimental data at the range of low GHz frequencies testify about the possibility to extend approach proposed for higher frequencies.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121411580","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 : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037166
A. G. Koshovy, G. Koshovy, O.O. Ahapova
Two different modifications of the integral equation technique are presented for correct modeling of the plane electromagnetic wave scattering by flat grating of finite number of impedance strips. The first modification is reworked to examine the plane E-polarized wave scattering problem. The second modification is reworked to studying of the plane H-polarized wave scattering problem. These modifications give the possibility to rework full-wave flat impedance strips gratings theory. Considerable attention is focused on asymptotic models of the plane EM wave scattering by sparsely filled pre-fractal strip grating. In that case corresponding integral equations' systems have explicit solutions. Scattered electromagnetic field in the far-zone can be successfully analyzed on the base of the asymptotic electrically narrow strip models.
{"title":"Modifications of the Integral Equation Technique in the Modeling of the Plane EM Wave Scattering by a Flat Impedance Strips' Grating","authors":"A. G. Koshovy, G. Koshovy, O.O. Ahapova","doi":"10.1109/UkrMW58013.2022.10037166","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037166","url":null,"abstract":"Two different modifications of the integral equation technique are presented for correct modeling of the plane electromagnetic wave scattering by flat grating of finite number of impedance strips. The first modification is reworked to examine the plane E-polarized wave scattering problem. The second modification is reworked to studying of the plane H-polarized wave scattering problem. These modifications give the possibility to rework full-wave flat impedance strips gratings theory. Considerable attention is focused on asymptotic models of the plane EM wave scattering by sparsely filled pre-fractal strip grating. In that case corresponding integral equations' systems have explicit solutions. Scattered electromagnetic field in the far-zone can be successfully analyzed on the base of the asymptotic electrically narrow strip models.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122988683","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 : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037114
N. Blinova, A. Selutin, Andrey Liakhovskiv, V. Kiyko
In this work, computational studies of directional characteristics in the wavelength range of a waveguide-slot antenna, consisting of transverse slot radiators, having two layers of different dielectrics in the waveguide and an air gap, are carried out. A comparative analysis of the directivity characteristics for the investigated options for filling the waveguide with dielectrics is carried out under the condition of equality of the slow-wave coefficients at the central wavelength. Experimental studies of the angular frequency dependences of such an antenna have been carried out. The conditions for the optimal ratio of the dielectric permittivities of the layers, their width and mutual arrangement in the waveguide to obtain the necessary directional and energy characteristics of the array in the wavelength range are shown.
{"title":"Directivity Characteristics of a Waveguide - Slot Antenna Array with Multilayer Dielectric Filling of the Waveguide","authors":"N. Blinova, A. Selutin, Andrey Liakhovskiv, V. Kiyko","doi":"10.1109/UkrMW58013.2022.10037114","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037114","url":null,"abstract":"In this work, computational studies of directional characteristics in the wavelength range of a waveguide-slot antenna, consisting of transverse slot radiators, having two layers of different dielectrics in the waveguide and an air gap, are carried out. A comparative analysis of the directivity characteristics for the investigated options for filling the waveguide with dielectrics is carried out under the condition of equality of the slow-wave coefficients at the central wavelength. Experimental studies of the angular frequency dependences of such an antenna have been carried out. The conditions for the optimal ratio of the dielectric permittivities of the layers, their width and mutual arrangement in the waveguide to obtain the necessary directional and energy characteristics of the array in the wavelength range are shown.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115864191","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：