{"title":"Microwave irradiator in the form of a piece of rectangular waveguide with dielectric insertion and narrow slot","authors":"N. Blinova, L. Yatsuk, A. Selutin","doi":"10.1109/ICATT.2017.7972633","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972633","url":null,"abstract":"The microwave irradiator in the form of a piece of a rectangular waveguide with a dielectric insert inside and a narrow slot in the end wall was experimentally investigated. The irradiated object is located near the slot in the outer region. It is shown that with the help of a dielectric insert it is possible to practically completely match this system, which ensures a high efficiency of irradiation of fragments of a material medium or dielectric samples of finite dimensions.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128884602","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":"Tuning range of microwave devices with micromechanical control","authors":"V. Kazmirenko, Y. Prokopenko, Y. Poplavko","doi":"10.1109/ICATT.2017.7972582","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972582","url":null,"abstract":"The paper presents generalization of micromechanical control principle for number of microwave devices, such as tunable phase shifters and resonator based filters. Starting with one dimensional dielectric discontinuity model, control principle is propagated to microstrip line devices and dielectric resonators. Maximum possible tuning range is discussed along with accompanying insertion loss.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131239154","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":"Active antenna with switchable beams for wireless sensor networks and IoT","authors":"J. Rigelsford, H. Hussein, R. J. Alkhudhairi","doi":"10.1109/ICATT.2017.7972628","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972628","url":null,"abstract":"An active antenna capable of changing the beamwidth and pointing direction of its main radiating beam is presented. The design exploits the use of a novel frequency selective surface (FSS) and variable capacitance diodes (varactors) to control the main beam of an antenna. The main beam azimuthal pointing direction can be steered ±18° from boresight and the −3dB beamwidth varied from 100° to 140°. Narrower beamwidths can be achieved by changing the size and shape of the active ground plane. The design is suitable for applications where even small changes to the antenna parameters (gain, beamwidth and pointing direction) can have a positive impact on coverage and performance. Operating within the 2.4GHz ISM band, the proposed antenna design is suitable for adaptive indoor WiFi networks, dynamic wireless sensor networks and the internet of things.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132855067","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":"Bragg structures with thin lossy layers","authors":"M. Andreev, V. Borulko, O. Drobakhin, D. Sidorov","doi":"10.1109/ICATT.2017.7972651","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972651","url":null,"abstract":"The behavior of quasi-periodic and aperiodic (chirp) Bragg structures with thin lossy layers was examined. In order to determine the frequency dependence of the reflection coefficient transmission matrix method was used. A deep minimum of the reflection coefficient for any frequency is implemented by proper choice of the thickness of the last thin film and its optical distance to the substrate. The possibility of providing broadband reflection by aperiodic structures has been offered.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134278971","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}
Ya. M. Chepurnyy, L. Emelyanov, D. O. Iskra, M. Shulga
{"title":"Estimation of clutters from aircrafts during ionospheric measurements using incoherent scatter radar with 100-meter two-mirror antenna","authors":"Ya. M. Chepurnyy, L. Emelyanov, D. O. Iskra, M. Shulga","doi":"10.1109/ICATT.2017.7972675","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972675","url":null,"abstract":"The analysis of clutters generated by the reflections from aircrafts at distances up to 400 km and received by the side lobes of the antenna pattern of 100-meter two-mirror antenna of the incoherent scatter radar is carried out. The conditions under which clutters arise from aircrafts at an altitude of about 10 km above the earth's surface are determined. Experimental data that illustrate influence of these clutters on the results of ionospheric measurements are presented.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131853154","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":"Two-band circular polarization antenna for Argos-3","authors":"A. A. Bezgin, A. Savochkin","doi":"10.1109/ICATT.2017.7972639","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972639","url":null,"abstract":"The article deals with an two-band circular polarization antenna for the marine terminal satellite communications system Argos-3. Satellite communication system Argos-3 is designed to collect meteorological and oceanographic information and determine the coordinates of moving objects. The antenna consists of two patches, which are located one above the other and flat screen. With the aim of forming a circular polarization the top patch has a pair of truncated square corners, and the bottom patch has a pair of truncated isosceles triangular corners. Antenna model was created in CAD FEKO. The main characteristic of the model was calculated in the program. The antenna prototype was created and its characteristics were measured.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132387721","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}
Y. Kremenetskaya, Igor O. Liskovskiy, Elena Zhukova
{"title":"Quasi-optical approach to the analysis of the energy model of millimeter wave propagation and antenna characteristics","authors":"Y. Kremenetskaya, Igor O. Liskovskiy, Elena Zhukova","doi":"10.1109/ICATT.2017.7972673","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972673","url":null,"abstract":"Millimeter-wave communication systems, unlike, for example, classical ones operating in the decimeter wave band, have fundamental differences related to the formation, radiation, propagation properties and signal losses. A new quasi-optical approach to the estimation of the energy losses of the millimeter wave (MMW) radiation and antenna amplification is proposed in the article. Such method makes it possible to construct a loss and interference model for the millimeter wave band (MMB) under conditions of direct visibility over greater than one kilometer distances and multipath propagation models in small cells of mobile systems in urban conditions.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125983403","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":"Analytical description of polar coordinates of random vectors in case of arbitrary fluctuations its Cartesian coordinates","authors":"S. Chabdarov, A. A. Korobkov","doi":"10.1109/ICATT.2017.7972663","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972663","url":null,"abstract":"There are many tasks where analytical description of the random signals is used. For instance, representation of signals and waves in polar coordinates is widely used in antenna theory and techniques. In this report, we present the results of implementation of the polygaussian approach for describing polar coordinates of random vectors as mixtures of Rayleigh and Rice distributions. Moreover, polygaussian approach gives an opportunity to generalize it to the case of multidimensional vectors.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125537298","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":"Novel high performance coherent dual-wideband orthomode transducer for coaxial horn feeds","authors":"F. Dubrovka, S. Piltyay","doi":"10.1109/ICATT.2017.7972642","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972642","url":null,"abstract":"In this paper we present the design and simulated characteristics of a novel high performance coherent orthomode transducer to be used in dual-wideband coaxial horn feeds of reflector antennas with polarization diversity or polarization processing of radio signals. The main stages of the development process are described. For both polarizations the simulated VSWR is less than 1.06 within both operating frequency bands (3.4–4.2 GHz and 10.7–12.8 GHz). Calculated crosspolar isolation is higher than 70 dB. Simulated differential phase shift between the output signals with orthogonal linear polarizations is less than 1° in both operating frequency bands.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124538381","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":"Radome integrated slotted waveguide antennas","authors":"S. Sekretarov, D. Vavriv","doi":"10.1109/ICATT.2017.7972586","DOIUrl":"https://doi.org/10.1109/ICATT.2017.7972586","url":null,"abstract":"The development of slotted waveguide antennas with an integrated radome is discussed. The integrated radome is intended to improve the resistance of slotted-waveguide antennas against complex environmental conditions and to extend application areas of the antennas. Efficient approaches to the design, simulation, and fabrication of such antennas are considered. The development of a single plane monopulse Ku-band circular array is presented as an example of the implementations of such approaches. The antenna test results are presented to verify the design, simulation, and manufacturing solutions proposed.","PeriodicalId":321624,"journal":{"name":"2017 XI International Conference on Antenna Theory and Techniques (ICATT)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122818465","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}