Pub Date : 2002-09-09DOI: 10.1109/CRMICO.2002.1137238
M. Ivashina, J.D.B.A. van Ardenne
We consider a problem of increasing the field of view (FOV) of the radio telescope by means of multi beam performance of the prime focus hybrid reflector systems. It was shown that array feeds of waveguide and horn elements currently used cannot provide closely spaced beams over a wide FOV and a high aperture efficiency in each beam due to the element spacing restrictions imposed by a size of the element aperture. We proposed a feed design in a form of an integrated dense array with a small physical size of the grid element and a volumetric form of the array element. For the feed, the original excitation system of the array elements has been developed to perform the desirable beam illumination pattern with low spillover level. The results have been obtained both for theoretical and experimental radiation patterns of the array feed. Scanning and multi beam capabilities and limitations of the hybrid reflector antenna have been investigated on the basis of the focal field distribution analysis. As an example, 0.35 F/D ratio reflector (Westerbork Telescope) has been considered. It has been shown that the proposed array antenna is a good candidate be used as the feed to improve the properties of source images by the reflector systems and therefore to increase the FOV of the radio telescope.
{"title":"A way to improve the field of view of the radiotelescope with a dense focal plane array","authors":"M. Ivashina, J.D.B.A. van Ardenne","doi":"10.1109/CRMICO.2002.1137238","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137238","url":null,"abstract":"We consider a problem of increasing the field of view (FOV) of the radio telescope by means of multi beam performance of the prime focus hybrid reflector systems. It was shown that array feeds of waveguide and horn elements currently used cannot provide closely spaced beams over a wide FOV and a high aperture efficiency in each beam due to the element spacing restrictions imposed by a size of the element aperture. We proposed a feed design in a form of an integrated dense array with a small physical size of the grid element and a volumetric form of the array element. For the feed, the original excitation system of the array elements has been developed to perform the desirable beam illumination pattern with low spillover level. The results have been obtained both for theoretical and experimental radiation patterns of the array feed. Scanning and multi beam capabilities and limitations of the hybrid reflector antenna have been investigated on the basis of the focal field distribution analysis. As an example, 0.35 F/D ratio reflector (Westerbork Telescope) has been considered. It has been shown that the proposed array antenna is a good candidate be used as the feed to improve the properties of source images by the reflector systems and therefore to increase the FOV of the radio telescope.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116330567","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 : 2002-09-09DOI: 10.1109/CRMICO.2002.1137281
A. Ivanov, O.I. Soldatenkov, N. Samoilov, S. Augunova, A. Tumarkin, Kyung-Yong Kim
The main goal of this work is the manufacture of a Ka-band ferroelectric (FE) phase shifter suitable for phase array antennas. The Ka-band (FE) phase shifters, which are viewed in this work, are based on the periodically loaded microstrip line.
{"title":"30 GHz ferroelectric phase-shifter on the basis of loaded microstrip line","authors":"A. Ivanov, O.I. Soldatenkov, N. Samoilov, S. Augunova, A. Tumarkin, Kyung-Yong Kim","doi":"10.1109/CRMICO.2002.1137281","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137281","url":null,"abstract":"The main goal of this work is the manufacture of a Ka-band ferroelectric (FE) phase shifter suitable for phase array antennas. The Ka-band (FE) phase shifters, which are viewed in this work, are based on the periodically loaded microstrip line.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125732018","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 : 2002-09-09DOI: 10.1109/CRMICO.2002.1137233
E.F. Baburov, O.V. Siobodnyuk
At present along with digital VHF communication systems, analog radio channels are widely used. At present the problem of antijamming is critical. The noise source is spurious emission from CATV systems, private VHF networks, personal extenders, etc. This paper is devoted to a problem of antijamming.
{"title":"Concentrated interference control in the open analog radio channels","authors":"E.F. Baburov, O.V. Siobodnyuk","doi":"10.1109/CRMICO.2002.1137233","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137233","url":null,"abstract":"At present along with digital VHF communication systems, analog radio channels are widely used. At present the problem of antijamming is critical. The noise source is spurious emission from CATV systems, private VHF networks, personal extenders, etc. This paper is devoted to a problem of antijamming.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121591123","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 : 2002-09-09DOI: 10.1109/CRMICO.2002.1137153
B. Dmitriyev, L. Zavgorodny, V. Pokatayev, V. Tkalych, Y. Litvinov, V. Kozlov, A. Kuchnirenco, I. Chabanenco, A. Yatsunenko, P. Zabolotny, B. Nalivaiko
This report considers the rehabilitation of people with locomotor apparatus dysfunction including those diseases complicated by inflammatory processes. The proposed system provides required mutual location of fracture separate fragments as well as their movement by three independent actuators with unique kinematics. The actuators generate specified movement velocity of either of three kinematics pairs within the range 0.05-5 mm/24 hours. We have proposed unique methods of bone tissue stimulation by microwaves with radiation intensity up to 10 mW/cm/sup 2/. Experimental models of the autodistracktoric system with microwave stimulation of regeneration in combination with simulation by a constant magnetic field and microelectrophoresis in biologically active points (e.g. using mumye solution) are patented in Ukraine. Some experimental laboratory elements of the autodistracktoric system have been manufactured and tested. The following tasks are to be fulfilled: development of both schematic and structure of the automatic autodistracktoric system, providing movement of separate fracture fragments to optimize the bones knitting; wide introduction of elements stimulating processes of tissues regeneration, where the regeneration is accelerated by 10 times owing to the complex influence on the fracture region and biologically active points of various physical factors, such as microwave radiation, constant magnetic fields, and microelectrophoresis; development of a system for domestic utilization; manufacture of autodistracktoric system pilot models, testing, and preparation of documents for batch production.
{"title":"Autodistracktoric treatment of locomotor apparatus dysfunction by microwave stimulation of tissue regeneration","authors":"B. Dmitriyev, L. Zavgorodny, V. Pokatayev, V. Tkalych, Y. Litvinov, V. Kozlov, A. Kuchnirenco, I. Chabanenco, A. Yatsunenko, P. Zabolotny, B. Nalivaiko","doi":"10.1109/CRMICO.2002.1137153","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137153","url":null,"abstract":"This report considers the rehabilitation of people with locomotor apparatus dysfunction including those diseases complicated by inflammatory processes. The proposed system provides required mutual location of fracture separate fragments as well as their movement by three independent actuators with unique kinematics. The actuators generate specified movement velocity of either of three kinematics pairs within the range 0.05-5 mm/24 hours. We have proposed unique methods of bone tissue stimulation by microwaves with radiation intensity up to 10 mW/cm/sup 2/. Experimental models of the autodistracktoric system with microwave stimulation of regeneration in combination with simulation by a constant magnetic field and microelectrophoresis in biologically active points (e.g. using mumye solution) are patented in Ukraine. Some experimental laboratory elements of the autodistracktoric system have been manufactured and tested. The following tasks are to be fulfilled: development of both schematic and structure of the automatic autodistracktoric system, providing movement of separate fracture fragments to optimize the bones knitting; wide introduction of elements stimulating processes of tissues regeneration, where the regeneration is accelerated by 10 times owing to the complex influence on the fracture region and biologically active points of various physical factors, such as microwave radiation, constant magnetic fields, and microelectrophoresis; development of a system for domestic utilization; manufacture of autodistracktoric system pilot models, testing, and preparation of documents for batch production.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134272666","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 : 2002-09-09DOI: 10.1109/CRMICO.2002.1137321
P. Markov, I. Onishchenko, G. Sotnikov
Primary results of developing a numerical electromagnetic code for researching a virtual cathode in the presence of plasma are presented. These results are a part of Project 1569 titled 'development of the group ion accelerator based on a plasma vircator and periodic magnetic field' executed under an agreement with the Science and Technology Center of Ukraine. The description of an algorithm for a numerical simulation of a virtual cathode in a cylindrical drift chamber is adduced. The algorithm is implemented through a set of programs written in the C++ language. Numerical calculations were made for the upgraded Agat experimental facility; the results are presented in graphical form.
{"title":"Development of the numerical code for researching a virtual cathode in a group ion accelerator","authors":"P. Markov, I. Onishchenko, G. Sotnikov","doi":"10.1109/CRMICO.2002.1137321","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137321","url":null,"abstract":"Primary results of developing a numerical electromagnetic code for researching a virtual cathode in the presence of plasma are presented. These results are a part of Project 1569 titled 'development of the group ion accelerator based on a plasma vircator and periodic magnetic field' executed under an agreement with the Science and Technology Center of Ukraine. The description of an algorithm for a numerical simulation of a virtual cathode in a cylindrical drift chamber is adduced. The algorithm is implemented through a set of programs written in the C++ language. Numerical calculations were made for the upgraded Agat experimental facility; the results are presented in graphical form.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132986083","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 : 2002-09-09DOI: 10.1109/CRMICO.2002.1137221
V. V. Kislov, R. Belyayev, V. Kalinin, V. Kolesov
Considered in this paper is the application of pseudorandom signals, generated by chaotic algorithms, as coding sequences for broadband systems with channel code division, operating in an interference environment.
本文考虑了在干扰环境下使用混沌算法产生的伪随机信号作为信道分码宽带系统的编码序列。
{"title":"Random coding application in broadband communication systems","authors":"V. V. Kislov, R. Belyayev, V. Kalinin, V. Kolesov","doi":"10.1109/CRMICO.2002.1137221","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137221","url":null,"abstract":"Considered in this paper is the application of pseudorandom signals, generated by chaotic algorithms, as coding sequences for broadband systems with channel code division, operating in an interference environment.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132932077","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 : 2002-09-09DOI: 10.1109/CRMICO.2002.1137363
Y.I. Budaretskiy, A. Zubkov, V.P. Kovalyov, S.N. Neporada, I.D. Ladnich
This paper presents an autonomous radar Doppler navigator which is used to measure ground vehicle movement parameters. It is a mm-wave radar, which supports precision measurement of movement velocity, path and time of motion. The radar is specially designed for application on vehicles for navigation and control purposes.
{"title":"Autonomous Doppler radar meter of transport movement parameters","authors":"Y.I. Budaretskiy, A. Zubkov, V.P. Kovalyov, S.N. Neporada, I.D. Ladnich","doi":"10.1109/CRMICO.2002.1137363","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137363","url":null,"abstract":"This paper presents an autonomous radar Doppler navigator which is used to measure ground vehicle movement parameters. It is a mm-wave radar, which supports precision measurement of movement velocity, path and time of motion. The radar is specially designed for application on vehicles for navigation and control purposes.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128839677","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 : 2002-09-09DOI: 10.1109/CRMICO.2002.1137184
A. Kosov, V. Zotov, V.M. Vaid-Perlov
A new circuit for low noise cavity stabilized millimeter wave oscillators has been developed. The circuit consists of stabilizing H/sub 011/ cavity, /spl lambda//sub g//4 electrical length transmission line, diode section and load. The diode section has a series resonance at the working frequency. To test the circuit, the 42 GHz GaAs IMPATT diode oscillator has been developed and investigated. The oscillator showed the phase noise reduction factor of about 50 dB. The noise level was at -89 dBc (1 Hz) at the 1 kHz offset frequency.
{"title":"A new circuit for stabilizing frequencies of low noise millimeter wave oscillators","authors":"A. Kosov, V. Zotov, V.M. Vaid-Perlov","doi":"10.1109/CRMICO.2002.1137184","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137184","url":null,"abstract":"A new circuit for low noise cavity stabilized millimeter wave oscillators has been developed. The circuit consists of stabilizing H/sub 011/ cavity, /spl lambda//sub g//4 electrical length transmission line, diode section and load. The diode section has a series resonance at the working frequency. To test the circuit, the 42 GHz GaAs IMPATT diode oscillator has been developed and investigated. The oscillator showed the phase noise reduction factor of about 50 dB. The noise level was at -89 dBc (1 Hz) at the 1 kHz offset frequency.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133731971","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 : 2002-09-09DOI: 10.1109/CRMICO.2002.1137218
I. Antipov, V. V. Bavykina, Y. Koval', G. Nesterenko
This paper considers the methods of reference generator clocking in Ukrainian communication networks. It is shown that radio-meteoric clocking systems can be used independently, as well as for calibration of clocking systems with unknown fixed and random measurement errors.
{"title":"Clock systems of reference generators in communication networks of Ukraine","authors":"I. Antipov, V. V. Bavykina, Y. Koval', G. Nesterenko","doi":"10.1109/CRMICO.2002.1137218","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137218","url":null,"abstract":"This paper considers the methods of reference generator clocking in Ukrainian communication networks. It is shown that radio-meteoric clocking systems can be used independently, as well as for calibration of clocking systems with unknown fixed and random measurement errors.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115587468","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 : 2002-09-09DOI: 10.1109/CRMICO.2002.1137366
Y. Yurovsky
Radio telescopes for the registration of solar radio emission at centimeter and meter wavelengths are described. On the basis of observations, the properties of radio bursts are determined and the probable nature of their origin is discussed.
{"title":"Radiotelescopes for observation of /spl mu/S pulsations of solar radiation","authors":"Y. Yurovsky","doi":"10.1109/CRMICO.2002.1137366","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137366","url":null,"abstract":"Radio telescopes for the registration of solar radio emission at centimeter and meter wavelengths are described. On the basis of observations, the properties of radio bursts are determined and the probable nature of their origin is discussed.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115645368","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}
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