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5-6 GHz band GaAs MMIC five bit digital attenuator 5-6 GHz频段GaAs MMIC 5位数字衰减器
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676314
A. Osipov, L. M. Semyonova, V. Radchenko
{"title":"5-6 GHz band GaAs MMIC five bit digital attenuator","authors":"A. Osipov, L. M. Semyonova, V. Radchenko","doi":"10.1109/CRMICO.2008.4676314","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676314","url":null,"abstract":"The results of design of the MMIC of five-bit microwave frequency attenuator are presented. The attenuator is executed on a crystal of gallium arsenide with dimensions 2.6 times 1.6 mm2 and provides in a strip of frequencies 5 - 6 GHz signal amplitude control in a band 0 - 31 dB with a step 1 dB and initial losses - 6 dB. Research of a channel resistance of the transistor made on two types of epitaxial structures is carried out.","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129148875","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}
引用次数: 3
Candy site finder, a planning tool for wireless networks Candy site finder，一个无线网络规划工具
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676412
L. Andriy, U. Stefan, S. Alexander
{"title":"Candy site finder, a planning tool for wireless networks","authors":"L. Andriy, U. Stefan, S. Alexander","doi":"10.1109/CRMICO.2008.4676412","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676412","url":null,"abstract":"The given work examines peculiarities of development and implementation of computer-aided design tools for high-performance combined fixed, wireless and mobile communication networks, corporate networks (CN). In the scope of authors interests a Planning Tool for Wireless Networks (IEEE 802.11a, b, g and 802.16) is situated. Site Finder, a Wireless Planning Tool is integrated within the CANDY Framework [1-3] and aimed to optimization of constellation of Access Points and Base Stations on PHY-layer under use of built-in project data visualization and documenting features. The obtained wireless networks solutions can be easily coupled with wired part of the designed CN as well as provide the further phases of integrated design workflow (cable system route tracing, load evaluation, performance and costs analysis).","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125682586","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}
引用次数: 0
Microwave oscillations in log-periodic antenna integrated with a field-effect transistor 场效应晶体管集成对数周期天线中的微波振荡
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676298
V. Lyubchenko, E. Yunevich, V. D. Kotov, V. I. Kalinin
{"title":"Microwave oscillations in log-periodic antenna integrated with a field-effect transistor","authors":"V. Lyubchenko, E. Yunevich, V. D. Kotov, V. I. Kalinin","doi":"10.1109/CRMICO.2008.4676298","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676298","url":null,"abstract":"Microwave oscillations in the hybrid integrated circuit consisted of field-effect transistor and microstrip log-periodical antenna is experimentally studied. The oscillations were observed both at the basic resonant frequency of the antenna and at the harmonics from 6 GHz to 60 GHz. The opportunities for set-up optimization were studied in application to millimeter wave frequency region.","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132457053","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}
引用次数: 0
Electrodynamic characteristics of radiating systems in electronic diffraction devices 电子衍射器件中辐射系统的电动力学特性
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676350
G. Vorobyov, M. V. Petrovsky, Y.A. Krutko, A. Rybalko, Y. Shulga
{"title":"Electrodynamic characteristics of radiating systems in electronic diffraction devices","authors":"G. Vorobyov, M. V. Petrovsky, Y.A. Krutko, A. Rybalko, Y. Shulga","doi":"10.1109/CRMICO.2008.4676350","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676350","url":null,"abstract":"Spatial and waveguide properties of reflection grating at its excitation by dielectric waveguide have been examined. Experimental results and numerical calculation using FDTD technique have been compared.","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132469074","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}
引用次数: 0
Zebra-structure of solar microwave bursts 太阳微波爆发的斑马结构
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676640
Y. Yurovsky
{"title":"Zebra-structure of solar microwave bursts","authors":"Y. Yurovsky","doi":"10.1109/CRMICO.2008.4676640","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676640","url":null,"abstract":"The dynamic spectrum of radio emission is used for diagnostics of geo-affectivity of solar flares. But sometimes the spectrum contains many stripes of radiation named as zebra-pattern, the origin of which is not clear. The great number of hypotheses of its origin is published but all of them do not take into account the change of signal during its propagation through a corona. The presented analysis showed that the effects of propagation can form the dynamic spectrum containing zebra-patterns. The properties of designed spectrum coincide with basic properties of the observed spectrum. It is found out that a ldquospikerdquo structure of strips is a natural property of radio wave interference and its existence indicates the interference nature of formation of a zebra-pattern. Consequently the zebra pattern can be formed not in a source of emission, but can arise up as a result of radio wave propagation through the inhomogeneous refractive coronal medium.","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"291 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132138090","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}
引用次数: 0
Experimental research of field structure in microstrip line using the method of magnetic probe on the basis of ferromagnetic resonance 基于铁磁共振的磁探针法微带线场结构实验研究
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676567
V. S. Vountesmery, O.P. Komarova, A. Osipov
{"title":"Experimental research of field structure in microstrip line using the method of magnetic probe on the basis of ferromagnetic resonance","authors":"V. S. Vountesmery, O.P. Komarova, A. Osipov","doi":"10.1109/CRMICO.2008.4676567","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676567","url":null,"abstract":"The method of magnetic probe on the basis of ferromagnetic resonance for electromagnetic field structure investigation in microstrip line is presented. Magnetic components of electromagnetic field with circular polarization of left-hand and right-hand rotation above and inside the dielectric were measured. Using the known algorithm, magnetic field components were determined.","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123074380","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}
引用次数: 0
Integrated design tools for combined LAN 用于组合局域网的集成设计工具
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676413
A. Luntovskyy, S. Uhlig, D. Gutter, A. Schill
{"title":"Integrated design tools for combined LAN","authors":"A. Luntovskyy, S. Uhlig, D. Gutter, A. Schill","doi":"10.1109/CRMICO.2008.4676413","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676413","url":null,"abstract":"Nowadays high-performance combined wired and wireless LANs are of great importance for companies and organizations of any size. However, efficient remains a challenge, since existing design tools only provide limited and hardly integrated support. The CANDY project was launched in 2003 with the aim to improve this situation by proposing an integrated design methodology with extensive tool support for all network design sub-tasks. This paper illustrates the CANDY network design methodology by giving an overview of the integrated design approach and presenting two advanced algorithms for design of wireless local area networks.","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"33 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125710604","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}
引用次数: 4
Circuits of combined absorptive filters 组合式吸收滤波器电路
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676470
N. D. Maljutin, A. Loschilov, A. A. Ladur
{"title":"Circuits of combined absorptive filters","authors":"N. D. Maljutin, A. Loschilov, A. A. Ladur","doi":"10.1109/CRMICO.2008.4676470","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676470","url":null,"abstract":"Absorptive filters with good selectivity and low input reflection are designed. It is the most efficient to use designed filters as combination with reflective band-pass filters.","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114229692","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}
引用次数: 2
Broad-band microwave absorbing covers on the base of multilayered structures of sputtered hydrogenated carbon with magnetic 3d-metal nanoparticles 基于磁性三维金属纳米颗粒溅射氢化碳多层结构的宽带微波吸收罩
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676511
G. A. Nikolaychuk, S. Yakovlev, L. Lutsev, V. Petrov, A. A. Tsvetkova, O. Moroz, E.Yu. Nakvasina, S. Trifonov
{"title":"Broad-band microwave absorbing covers on the base of multilayered structures of sputtered hydrogenated carbon with magnetic 3d-metal nanoparticles","authors":"G. A. Nikolaychuk, S. Yakovlev, L. Lutsev, V. Petrov, A. A. Tsvetkova, O. Moroz, E.Yu. Nakvasina, S. Trifonov","doi":"10.1109/CRMICO.2008.4676511","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676511","url":null,"abstract":"Results of the study and technology of the new generation of microwave absorbing covers on the base of thin amorphous hydrogenated carbon films a-C:H with ferromagnetic 3d-metal nanoparticles (Co, Fe, Ni) sputtered on aramide tissue (kevlar) are presented. Electromagnetic wavespsila losses in the produced microwave absorbing covers with the thickness of 1.5 - 2 mm are equal to 10 - 15 dB in the frequency range 8 - 80 GHz. The covers weight is 1.0 - 1.5 kG/m2.","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"247 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116055693","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}
引用次数: 1
AlInGaN/GaN heterostructures with 2D electron gas and quantum wells for transistors and light emitting diodes 用于晶体管和发光二极管的具有二维电子气体和量子阱的AlInGaN/GaN异质结构
2008 18th International Crimean Conference - Microwave & Telecommunication Technology Pub Date : 2008-11-18 DOI: 10.1109/CRMICO.2008.4676513
G. P. Yablonskii, E. Lutsenko, H. Kalish, M. Heuken
{"title":"AlInGaN/GaN heterostructures with 2D electron gas and quantum wells for transistors and light emitting diodes","authors":"G. P. Yablonskii, E. Lutsenko, H. Kalish, M. Heuken","doi":"10.1109/CRMICO.2008.4676513","DOIUrl":"https://doi.org/10.1109/CRMICO.2008.4676513","url":null,"abstract":"AlInGaN/GaN heterostructures with 2D electron gas and quantum wells were grown on Si substrates. Optical and electrical properties of the heterostructure were investigated; high electron mobility transistors (HEMT) and light emitting diodes (LED) were fabricated.","PeriodicalId":328074,"journal":{"name":"2008 18th International Crimean Conference - Microwave & Telecommunication Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115319186","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}
引用次数: 1
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