{"title":"Physical Interpretation of the Solution to the Problem of Diffraction on the Impedance Half-plane","authors":"M. Vesnik","doi":"10.1109/RMC50626.2020.9312342","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312342","url":null,"abstract":"On the basis of the recently developed method of fundamental components, using heuristic formulas, a physical interpretation of the solution of the problem of diffraction of an electromagnetic wave on a half-plane with impedance boundary conditions is carried out. The results are analyzed for the cases of opaque and semi-transparent half-planes.","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124398577","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}
{"title":"Millimeter-continuous-wave radar for creating array imaging system with higher range","authors":"S. Korolyov, A. Shikov, V. Parshin","doi":"10.1109/RMC50626.2020.9312250","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312250","url":null,"abstract":"A 94 GHz frequency-modulated continuous-wave radar with a 3-element array receiver is developed as a base for creating a focal-plane array imaging system with higher range. Each array element consists of a low-barrier Schottky diode that is mounted on a modified slot antenna, with the array pitch of about 4 mm. The intermediate frequency current of the diode is transformed to the output voltage with a transimpedance amplifier. A design of the developed radar and its modules is described in this paper, and the results of studying 3-element receiver sensitivity are presented. It is shown that the application of the frequency-modulated continuous-wave radar method allows increasing the range of the focal-plane array imaging system by 30 times.","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116033435","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}
{"title":"An Excitation of Anisotropic Impedance Metasurface in the Form of Elliptical Cylinder","authors":"A. Semenikhin, D. Semenikhina","doi":"10.1109/RMC50626.2020.9312320","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312320","url":null,"abstract":"The problem of arbitrary excitation of waves by a system of external sources near an anisotropic metasurface (MS) in the form of an elliptical cylinder with a surface homogenized impedance tensor of general form is solved. The solution to the problem is written as a superposition of E- and H-waves in elliptical coordinates. The partial reflection coefficients of waves were found from the boundary conditions using the orthogonality of the Mathieu angular functions. The conditions under which the solution of the excitation problem is obtained in an explicit form are found and analyzed. It is shown that for this, the surface impedance tensor of a uniform MS must belong to a class of deviators. In the particular case of a mutual (most easily realized) metasurface, its impedance tensor should only be reactance. In another special case, such impedance describes a class of anisotropic nonreciprocal MSs with the so-called perfect electromagnetic conductivity (PEMC).","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130412752","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}
V. Denisenko, V. N. Kozlov, R. Kolesnikov, Y. Korchemkin, Yjuri V. Krivosheev, A. Shitikov, A. Shishlov, Z. A. Janukian, M. Uhm, S. Yun
{"title":"The Concept of a Flat Active Phased Array Antenna on a Multilayer Printed Circuit Board","authors":"V. Denisenko, V. N. Kozlov, R. Kolesnikov, Y. Korchemkin, Yjuri V. Krivosheev, A. Shitikov, A. Shishlov, Z. A. Janukian, M. Uhm, S. Yun","doi":"10.1109/RMC50626.2020.9312235","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312235","url":null,"abstract":"The concept of an active phased array antenna made on a multilayer printed circuit board is presented. Main parts of the antenna are considered. Feasibility of the antenna is discussed.","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123929048","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}
A. Vikharev, Yu.S. Oparina, I. Osharin, N. Peskov, A. Savilov, D. Shchegolkov
{"title":"Electron Masers Based on Selective Excitation of Talbot-Type Supermodes in Oversized Cavities","authors":"A. Vikharev, Yu.S. Oparina, I. Osharin, N. Peskov, A. Savilov, D. Shchegolkov","doi":"10.1109/RMC50626.2020.9312294","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312294","url":null,"abstract":"A natural problem arising in the case of realization of a electron maser operating in the terahertz frequency range is the use of oversized microwave system (with characteristic sized significantly exceeding the operating wavelength). In this situation, it is difficult to provide selective excitation of a definite operating transverse mode. We propose to give up working on a fixed transverse mode, and to use excitation of a supermode formed by a fixed set of several transverse modes of an oversized waveguide. The use of the Talbot effect is proposed to create oversized microwave systems that provide high Q-factors for operating supermode. As an example, in this work we describe our simulations for a 2 THz Free-Electron Maser fed by a high-current relativistic electron beam. In addition, we discuss possibilities for using this approach in THz gyrotrons.","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130169189","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}
A. S. Kryukovsky, D. S. Lukin, E. Mikhaleva, O. V. Popchenko, D. Rastyagaev
{"title":"Diagnostics of the Effective Frequency of Electronic Collisions in the Ionosphere Based on Analysis of the Amplitude Characteristics of Continuous Linear Frequency Modulated Radio Signals","authors":"A. S. Kryukovsky, D. S. Lukin, E. Mikhaleva, O. V. Popchenko, D. Rastyagaev","doi":"10.1109/RMC50626.2020.9312352","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312352","url":null,"abstract":"On the basis of the bicharacteristics method, an algorithm recovering the effective frequency of electron collisions in the ionosphere, using data on signal attenuation during vertical sounding of the ionospheric plasma with a continuous frequency-modulated decameter signal has been developed for. The results of numerical simulation are presented.","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130204235","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}
{"title":"Possibilities of resonant near-field microwave sounding in the diagnosis of burn wounds","authors":"A. Galka, A. Martusevich, D. Yanin, A. Kostrov","doi":"10.1109/RMC50626.2020.9312323","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312323","url":null,"abstract":"The possibilities of the method of resonant near-field microwave sounding in relation to the diagnosis of burn wounds are considered. Resonant sensors have been developed and the impedance model of measurement systems has been developed. It is experimentally established that the real part of the dielectric permittivity of a burn wound is less than in the area of the intact site. The dependence of the electrodynamic parameters of wound tissues on the depth of penetration of the burn was also established, which can be used for rapid analysis of the degree of thermal damage.","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131891462","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}
A. Palitsin, A. Gashturi, M. Proyavin, A. Gromov, S. Filchenkov, A. Panin, M. Goykhman, Yuri V. Rodin, R. Rozental, D. Sobolev
{"title":"Tunable Waveguide Notch Filter for Plasma Diagnostics","authors":"A. Palitsin, A. Gashturi, M. Proyavin, A. Gromov, S. Filchenkov, A. Panin, M. Goykhman, Yuri V. Rodin, R. Rozental, D. Sobolev","doi":"10.1109/RMC50626.2020.9312347","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312347","url":null,"abstract":"A design of a tunable notch filter based on prismatic and pyramidal resonators is proposed. In Ka frequency band, two samples of the filter with a prismatic resonator were manufactured, one of them by mechanical processing, and another using polymer 3D printing technology, followed by surface metallization. A good agreement was shown between simulated and measured characteristics of the fabricated filter samples, including a 20% stopband tuning. The attenuation of the single-cavity Ka band notch filter at the central frequency of stopband was -25 dB. Numerical simulations showed that when the number of resonators is increased to four, the attenuation increased to −60 dB in the absence of parasitic stopbands in the frequency range from 26 to 47 GHz. For a three-cavity filter with a pyramidal cavity in the numerical simulation, attenuation of −92 dB at a frequency of 240 GHz was obtained, which makes this filter attractive for plasma diagnostics systems in a promising prototype of an industrial fusion reactor of the next generation (DEMO).","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133591659","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}
{"title":"Analysis of the Ionosphere Influence on the Probability of Broadband Signal with Phase-Shift Keying Reception in Satellite Communication Systems","authors":"L. Nazarov, V. V. Batanov","doi":"10.1109/RMC50626.2020.9312332","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312332","url":null,"abstract":"Methods for describing signal distortions during their propagation through ionosphere channels of satellite communication systems are presented. Descriptions of methods for estimating energy losses in the correlation processing of distorted signals with respect to propagation in free space are given. A numerical estimation of energy losses for a class of broadband signals with multi-position phase-shift keying has been carried out.","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124623861","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}
A. Khudchenko, A. Baryshev, R. Hesper, L. Filipenko, K. Rudakov, V. Koshelets
{"title":"Efficiency of the Image Band Suppression in Sideband Separating SIS Receivers for Radio Astronomy","authors":"A. Khudchenko, A. Baryshev, R. Hesper, L. Filipenko, K. Rudakov, V. Koshelets","doi":"10.1109/RMC50626.2020.9312246","DOIUrl":"https://doi.org/10.1109/RMC50626.2020.9312246","url":null,"abstract":"The sideband separating SIS receivers are known as the most sensitive instruments for millimeter and submillimeter ground based radio astronomy. Sideband Ratio or Sideband Rejection Ration (SRR), is one of the key parameters of heterodyne receivers, because it is strongly influencing the system sensitivity. This effect takes place due to sufficient signal losses in the atmosphere or in the instrument optics, which is reducing the signal to noise ratio. To develop high performance receiver SIS sideband separating receiver with have performed a comprehensive analysis of the signal transformation in both high frequency (RF) and low frequency (IF) parts of the receiver. As result, the entire IRR pattern was simulated. It was found that SRR performance is very much restricted by reflections in RF and IF parts of the receiver. Minimization of these reflections is curtail for achieving SRR levels of 15 dB or higher. This knowledge is used in development of sideband separating SIS receiver for ground based telescope APEX and for Millimetron space mission.","PeriodicalId":239235,"journal":{"name":"2020 7th All-Russian Microwave Conference (RMC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124665516","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}