2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)最新文献

{"title":"3D print X-band horn antenna for ground-based SAR application","authors":"Yohandri, Rahmad Arif Syafrindo, J. Sumantyo, C. E. Santosa, A. Munir","doi":"10.1109/PIERS.2017.8261940","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8261940","url":null,"abstract":"The Ground-Based Synthetic Aperture Radar (GB-SAR) system is developed in our research. The system which is proposed for landslide monitoring operates in X-band frequency with the center frequency 10 GHz. In this paper, the light pyramidal X-band horn antenna implemented for the system is presented. The optimization of antenna design is carried out using CST software. Based on the optimum design, the proposed pyramidal X-band horn antenna is fabricated using a high resolution 3D printer with a polylactic acid (PLA) applied as 3D printing filaments. The printed antenna is then coated using polyurethane on its surface. From the characterization result, it shows that the working bandwidth of proposed pyramidal X-band horn antenna is about 2.9 GHz with reflection coefficient of −69 dB and −16 dB for simulation and measurement, respectively. A good agreement has been achieved between the simulated and measured results indicating that the proposed antenna has satisfied for our GB-SAR system.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126131394","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":"Regular TEC variations in mid-latitude and polar regions","authors":"A. Yasyukevich, Y. Yasyukevich, A. Mylnikova","doi":"10.1109/PIERS.2017.8261700","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8261700","url":null,"abstract":"We carry out morphological spectral analysis of regular total electron content (TEC) variations, based on the data of dual-frequency GPS/GLONASS receivers located in mid-latitude and polar regions for the period from 2002 till 2015. We reveal basic harmonics, existent in TEC spectrum and determine their features. It is shown that variations with periods of 1, 1/2 … and up to 1/5 of a day, 27-days as well as 1, 1/2 … of a year constantly present in TEC spectrum. The amplitude and the number of clearly prominent harmonics vary according to solar activity level. It is noted that TEC variations patterns throughout the year in the mid- and high-latitude regions are similar. We also compared the dynamics of TEC variations with global electron content and F10.7 solar radio flux changes and showed that in general, all the ionospheric harmonics repeat F10 7 dynamics.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126913605","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":"Hand-held radar with video positioning system for microwave imaging","authors":"V. Razevig, A. Zhuravlev, M. Chizh, S. Ivashov, A. Bugaev","doi":"10.1109/PIERS.2017.8262279","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262279","url":null,"abstract":"Obtaining microwave images of subsurface objects with scanning radar systems requires positioning of the radar antenna within a fraction of the wavelength in the medium. At the frequencies of several gigahertz the positioning of the radar is achieved by a distance measuring wheel, which can be used only on smooth surfaces. In such a positioning system the data acquisition requires collecting data samples along parallel lines to get plan view images. In this paper a hand-held radar equipped with a video-based positioning system is considered. The video-based positioning system, which uses a web-camera and a contrast graphical marker (an AR-marker), enables positioning the radar in 3D with sufficient precision without any constraints on the sampling pattern. The radar position is calculated using correspondence between the physical coordinates of the marker corners and their projections on the web-camera image. Reconstruction of the microwave image is performed by a back projection method which uses 3D coordinates of each data sample. The result of data processing can be presented as a traditional microwave image, or as an overlay to the image of the scene (augmented reality). This way of data visualization removes the problem of radar data remapping from the computer screen to the probed scene. Several application areas of the developed technique are outlined. Among the considered problems are: obtaining radar images of concealed objects under clothing by a hand-held radar scanner and obtaining radar images over uneven surfaces (arched ceilings, columns, statues, natural soil etc.). The first of these applications is illustrated with experimentally obtained results.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129018272","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":"Spectral problem in a generalized theory of electromagnetic waves","authors":"G. Islamov, A. K. Tomilin","doi":"10.1109/PIERS.2017.8261785","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8261785","url":null,"abstract":"It is shown theoretically that electromagnetic process is potentially-vortex. This extends Maxwell's theory. We detected four-dimensional vector potential which is a fundamental characteristic of the electromagnetic field. It has been shown that it describes unambiguously a velocity field of physical vacuum in the selected frame. As in the theory of elasticity, an electromagnetic wave process is described by a superposition of two vectors and two scalar functions. It solved the problem of generating a spectral electromagnetic signal with a predetermined frequency range.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133682444","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":"Coherent perfect absorption in a coupled electric-magnetic-resonator system","authors":"Lei Zhu, Liang Dong, Jing Guo, F. Meng, Qun Wu","doi":"10.1109/PIERS.2017.8262415","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262415","url":null,"abstract":"We proved numerically and experimentally that coherent perfect absorption (CPA) can be achieved in a coupled electromagnetic induced transparency (EIT) system. Unit cell of EIT system consists of a “T-type” cut wire (CW) electric resonator and a pair of double split rings (DSRs) magnetic resonator, placed on the same side of microstrip line. Intermediate coupling between electric and magnetic resonators and their respectively appropriate loss lead to the CPA, where an ideal Parity-time (PT) symmetry is also achieved. These results provide a potential way for designing absorption devices.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"227 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131647688","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":"Design of ring-shaped circular microstrip antenna for ULB application","authors":"C. Hamrouni, Chafai Abdel Hamid, H. Sakli, A. Kachouri, Naceur Abdelkrim","doi":"10.1109/PIERS.2017.8261729","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8261729","url":null,"abstract":"With the increasing need for high through puts and the scarcity of available frequency, we propose in the research paper new solutions that meet these requirements. Ultra Wide Band (UWB) technology seems a very promising solution. we developed a new small circular modified Microstrip antenna design to lift the bandwidth lock while maintaining a valued performance properties quality. This new antenna consists of a circular microstrip antenna with ring slot inscribed in a patch resonator and a modified partial ground plane with slots to form a single wide bandwidth. Indeed, we studied the performance of a patch antenna made of FR4epoxy substrates (20 × 20 × 1.57). The bandwidths range from [3.6 GHz; 4.9 GHz] for a width of 1.3 GHz and a band of [9.7 GHz; 26.7 GHz] of 17 GHz and for frequencies above 27.9 GHz the bandwidth is of the order of 7.2 GHz. Antenna various simulations performance are carried out and obtained tests results are validated with requirements agreement.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130936031","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":"Simulation of intelligent public light system in smart city","authors":"R. Fujdiak, P. Mlynek, J. Misurec, J. Slacik","doi":"10.1109/PIERS.2017.8262176","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262176","url":null,"abstract":"The technological changes bring us closer to the smart cities solutions. New wireless technologies are opening different areas of city management, smart sensing and measurements. These technologies might be used for more efficient solutions. Through the smart solution, the smart public light management is currently quite hot area, where might be saved systems costs or power. We are focused on proving that the efficiency increase might be done only with changing the management schemes. The paper provides different simulations of public light management schemes. It is shown, that the efficiency might be noticeably higher with appropriate management schema.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114505052","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":"Invisibility cloak scheme with composite plasmonic waveguides and metsurface overlayers","authors":"Y. Galutin, E. Falek, A. Karabchevsky","doi":"10.1109/PIERS.2017.8262231","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262231","url":null,"abstract":"Here, we report on an invisibility cloak scheme with composite plasmonic waveguide and metsurface overlayers. Designated structures create a ‘black hole’ which conceal a nano-scale object placed on a waveguide. Using the calculated effective permittivity of plasmonic overlayer on waveguide, we analyze the mode using Finite-difference time-domain method (FTDT) based Maxwell solver of Lumerical. We show that evanescent fields of composite plasmonic waveguide structure do not interact with the object, i.e., resulting in object's invisibility.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115421800","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":"Generation of chaotic and quasi-periodic oscillations in multi-contour self-generator","authors":"N. Stankevich, O. Astakhov, E. Seleznev","doi":"10.1109/PIERS.2017.8262293","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262293","url":null,"abstract":"In the present paper in radiophysical experiments formation of multi-modes chaotic attractor, based on the multi-dimensional quasiperiodic torus is observed. Character phase portraits are shown.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115665707","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":"Photonic interferometry based optical carrier cancellation for optical interference noise reduction","authors":"S. Kang, S. Jung, K. Mun, S. K. Han","doi":"10.1109/PIERS.2017.8262135","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262135","url":null,"abstract":"In the coherent optical access network, two major optical interference noise (OIN) including Rayleigh back scattering (RBS) at fiber link and optical beating noise (OBI) at the uplink receiver need to considered. RBS noise is a nonlinearly back-scattered component due to non-uniformity in single-fiber loopback system when reflective-type modulator is used as an uplink modulator. Influence of this noise would be stronger for high power of the optical carrier and this carrier-induced reflecting component can beat with optical carrier at local oscillator (LO) due to square-law detection in uplink coherent receiver. In addition, OBI noise is unwanted beating term due to optical signal carrier-to-LO carrier beat by the same receiving principle. Thus, alive optical carrier causes OIN of both noises enabling to inevitable obstacles for uplink signal. Moreover, OIN becomes more severe as increasing fiber input power and transmission distance which are important requirements for the next generation passive optical network (PON). In this paper, a novel photonic interferometry-based optical carrier cancellation (OCC) technique is proposed to mitigate these OIN for multiple access in coherent PON. Our goal is to cancel out the optical carrier at optical network unit (ONU) which is main cause of OIN. Basic principle of the proposed technique is making a photonic interferometry consisted of two optical interferometric paths and generating a destructive interference through phase difference of 180 degrees between two paths. In-line optical phase shifter was used considering its advantages of cost-effectiveness and easy bias control properties. In addition, power imbalance and fluctuation of the state of polarization between two paths were minimized by using a variable optical attenuator and simple polarization control at ONU. Furthermore, transparency for modulation format was possible because the proposed technique is applied at ONU after uplink signal modulation. Through experimental demonstration for the proposed technique, optical carrier was cancelled out up to about 30 dB and this cancellation facilitates OIN mitigation at the overall uplink signal band. Under the severely OIN-induced condition of the high fiber input power more than minimally required fiber launch power, a remarkable performance improvement in terms of the noise floor and eye-pattern were verified as a proof of concept. The proposed technique shows a good tolerance to OIN-induced uplink transmission by taking advantages of the low-complexity, cost-effectiveness and transparency for modulation format of uplink signal.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114851012","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}