Pub Date : 2002-09-09DOI: 10.1109/CRMICO.2002.1137188
N. S. Boltovets, V. N. Ivanov, O.E. Rengevych
We present the results of our research into morphological and electrical properties of ZrB/sub x/-n-SiC 6H and Au-ZrB/sub x/-n-SiC 6H surface-barrier structures. They were studied both before and after a 90 s rapid thermal annealing (RTA) in vacuum at the temperature T=1000/spl deg/C. The ZrB/sub x/ films were obtained using magnetron sputtering from pressed targets of stoichiometric composition. It was shown that the RTA changed neither contact layered structure nor the abrupt character of the interface, and the contact barrier properties were retained. For the initial (pre-RTA) samples the Schottky barrier height /spl phi//sub B/ was 0.69-0.78 eV; post-RTA, it became 0.59-0.70 eV.
{"title":"Heat-resistant Au-ZrB/sub x/-n-SiC 6H Schottky barriers","authors":"N. S. Boltovets, V. N. Ivanov, O.E. Rengevych","doi":"10.1109/CRMICO.2002.1137188","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137188","url":null,"abstract":"We present the results of our research into morphological and electrical properties of ZrB/sub x/-n-SiC 6H and Au-ZrB/sub x/-n-SiC 6H surface-barrier structures. They were studied both before and after a 90 s rapid thermal annealing (RTA) in vacuum at the temperature T=1000/spl deg/C. The ZrB/sub x/ films were obtained using magnetron sputtering from pressed targets of stoichiometric composition. It was shown that the RTA changed neither contact layered structure nor the abrupt character of the interface, and the contact barrier properties were retained. For the initial (pre-RTA) samples the Schottky barrier height /spl phi//sub B/ was 0.69-0.78 eV; post-RTA, it became 0.59-0.70 eV.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"68 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":"132629659","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.2002.1137335
Y. Gaidai, V. Sidorenko, A. V. Sirota, A. V. Taranenko
A wide-band magnetooptic spectrum analyser for microwave signals, operating within the frequency band of 1-10 GHz, is designed. Operation of this device is based on Bragg diffraction of optical guided waves (OGW) by magnetostatic waves (MSW), excited in yttrium iron garnet films.
{"title":"Magnetooptic diffraction spectrum analyser of microwave signal","authors":"Y. Gaidai, V. Sidorenko, A. V. Sirota, A. V. Taranenko","doi":"10.1109/CRMICO.2002.1137335","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137335","url":null,"abstract":"A wide-band magnetooptic spectrum analyser for microwave signals, operating within the frequency band of 1-10 GHz, is designed. Operation of this device is based on Bragg diffraction of optical guided waves (OGW) by magnetostatic waves (MSW), excited in yttrium iron garnet films.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"24 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":"131598216","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.2002.1137234
V.A. Komagorkin
The problem of distribution of electromagnetic waves in range 200-4500 MHz along a surface with deep modulation of a relief is reviewed in case when the source of radiation is located on border or it is directly situated in the area of spatial modulation of a relief. The methods used for the decision of similar problems are analyzed, their comparative analysis is conducted, conditions and limits of applicability are investigated. The new theoretical concept of distribution of electromagnetic waves in conditions of an actual urban or geographic landscape founded on a hypothesis of the resonant interaction of electromagnetic fields with low intensity high harmonics of Fur'e-decomposition of a surface relief is offered. The theoretical model and the mathematical method of the description were developed.
{"title":"Microwave communications in real urban conditions","authors":"V.A. Komagorkin","doi":"10.1109/CRMICO.2002.1137234","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137234","url":null,"abstract":"The problem of distribution of electromagnetic waves in range 200-4500 MHz along a surface with deep modulation of a relief is reviewed in case when the source of radiation is located on border or it is directly situated in the area of spatial modulation of a relief. The methods used for the decision of similar problems are analyzed, their comparative analysis is conducted, conditions and limits of applicability are investigated. The new theoretical concept of distribution of electromagnetic waves in conditions of an actual urban or geographic landscape founded on a hypothesis of the resonant interaction of electromagnetic fields with low intensity high harmonics of Fur'e-decomposition of a surface relief is offered. The theoretical model and the mathematical method of the description were developed.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"126 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":"122898873","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.2002.1137328
I. Magda, A.V. Paschenko, I. Shapoval, V. Novikov
The application of the adaptive testing and data processing (ATDP) software suite in electromagnetic tests of microwave receivers demonstrated the possibility for analysing and interpreting dynamic characteristics of a complex nonlinear system.
{"title":"Application of ATDP suite for electronic system evolution operator restoration and classification [microwave receiver EMI testing]","authors":"I. Magda, A.V. Paschenko, I. Shapoval, V. Novikov","doi":"10.1109/CRMICO.2002.1137328","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137328","url":null,"abstract":"The application of the adaptive testing and data processing (ATDP) software suite in electromagnetic tests of microwave receivers demonstrated the possibility for analysing and interpreting dynamic characteristics of a complex nonlinear system.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"38 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":"116875728","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.2002.1137192
A. Galdetskiy, B. Sazonov
The conditions for achieving maximal emission current in multipactors are investigated analytically on the basis of single-particle models with regard to the mirror image field. The possibility of increasing emission current are suggested. The experimental results of a 3 GHz alenotron research are considered. A current of 150 mA has been achieved.
{"title":"Theoretical and experimental investigation of cold emitters for alenotron amplifiers","authors":"A. Galdetskiy, B. Sazonov","doi":"10.1109/CRMICO.2002.1137192","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137192","url":null,"abstract":"The conditions for achieving maximal emission current in multipactors are investigated analytically on the basis of single-particle models with regard to the mirror image field. The possibility of increasing emission current are suggested. The experimental results of a 3 GHz alenotron research are considered. A current of 150 mA has been achieved.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"5 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":"123905853","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.2002.1137278
D. Afonin, A.K. Malyshkin
This paper contains the results of experimental investigations of the electrodynamic system, that consists of metal tube with inner periodic structure, under different excitations. As a result, colour 3D images of spectral characteristics were obtained, and the Q-factor values were calculated for excited oscillation types.
{"title":"Electrodynamic system with periodic structure","authors":"D. Afonin, A.K. Malyshkin","doi":"10.1109/CRMICO.2002.1137278","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137278","url":null,"abstract":"This paper contains the results of experimental investigations of the electrodynamic system, that consists of metal tube with inner periodic structure, under different excitations. As a result, colour 3D images of spectral characteristics were obtained, and the Q-factor values were calculated for excited oscillation types.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"39 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":"123347431","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.2002.1137136
D. I. Voskresensky, A. Grinev
Subsurface penetrating radars (SPR) are designed for subsurface monitoring and are able to execute detection, location determination and diagnosis of subsurface areas and objects at a new quality standard level. Basic problems regarding the design of such radars are examined in this paper. They are: the choice of frequency band for radio probing and the type of probing signal, information acquisition strategy, aperture generating method, estimation of resolution, dynamic range and capabilities of the system; algorithm design for radar imaging with respect to specific character of super wide band probing signal; system components design, including antenna, transmitting and receiving modules, information processing and screening module.
{"title":"Subsurface penetrating radars","authors":"D. I. Voskresensky, A. Grinev","doi":"10.1109/CRMICO.2002.1137136","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137136","url":null,"abstract":"Subsurface penetrating radars (SPR) are designed for subsurface monitoring and are able to execute detection, location determination and diagnosis of subsurface areas and objects at a new quality standard level. Basic problems regarding the design of such radars are examined in this paper. They are: the choice of frequency band for radio probing and the type of probing signal, information acquisition strategy, aperture generating method, estimation of resolution, dynamic range and capabilities of the system; algorithm design for radar imaging with respect to specific character of super wide band probing signal; system components design, including antenna, transmitting and receiving modules, information processing and screening module.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"75 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":"125367854","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.2002.1137164
V. Maltsev, V. Myakinkov, Y. Rudy, I.K. Goryunov, A. Kondrashova, A. Korolyov, V. N. Lebedev, A.V. Tyrtyshnikov
Recently, multiple frequency oscillator units providing the switching of stable microwave signal sources have attracted considerable interest. These units provide a frequency switching rate below 5 /spl mu/s while retaining the parameters of an individual dielectric resonator (DR) stabilized microwave oscillator. These oscillator units use sharp suppression and excitation of self-induced oscillations in the oscillator circuit, in addition to a high-speed multichannel p-i-n switch (up to 10 channels).
{"title":"Sets of driving oscillators with fast frequency switching","authors":"V. Maltsev, V. Myakinkov, Y. Rudy, I.K. Goryunov, A. Kondrashova, A. Korolyov, V. N. Lebedev, A.V. Tyrtyshnikov","doi":"10.1109/CRMICO.2002.1137164","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137164","url":null,"abstract":"Recently, multiple frequency oscillator units providing the switching of stable microwave signal sources have attracted considerable interest. These units provide a frequency switching rate below 5 /spl mu/s while retaining the parameters of an individual dielectric resonator (DR) stabilized microwave oscillator. These oscillator units use sharp suppression and excitation of self-induced oscillations in the oscillator circuit, in addition to a high-speed multichannel p-i-n switch (up to 10 channels).","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"100 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":"116297534","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.2002.1137359
O. Morozov
The principles of information derivation of the allocation of thermal fields in working chambers, with the help of fibre-optical sensors, are briefly considered. The concept of a uniform field of complexed fibre-optical sensors for monitoring microwave technological process system parameters is put forward. The principles of integration, methods of information acquisition by means of complexed fibre-optical sensors, and variants of their configuration, are considered.
{"title":"Fiber-optic sensor of thermal field distribution in work chambers of microwave process installations","authors":"O. Morozov","doi":"10.1109/CRMICO.2002.1137359","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137359","url":null,"abstract":"The principles of information derivation of the allocation of thermal fields in working chambers, with the help of fibre-optical sensors, are briefly considered. The concept of a uniform field of complexed fibre-optical sensors for monitoring microwave technological process system parameters is put forward. The principles of integration, methods of information acquisition by means of complexed fibre-optical sensors, and variants of their configuration, are considered.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"25 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":"124116902","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.2002.1137256
V. Ruchenkov, K. Klimov, B. V. Sestroretsky
The authors consider the application of a flat multibeam Rotman lens in feed systems of array antennas. Satisfactory results are obtained by strict electrodynamic modeling of the elementary case of similar devices that allows optimistic forecasts on the improvement of radio engineering characteristics of the proposed device.
{"title":"Strict electrodynamic simulation of Rotman lens","authors":"V. Ruchenkov, K. Klimov, B. V. Sestroretsky","doi":"10.1109/CRMICO.2002.1137256","DOIUrl":"https://doi.org/10.1109/CRMICO.2002.1137256","url":null,"abstract":"The authors consider the application of a flat multibeam Rotman lens in feed systems of array antennas. Satisfactory results are obtained by strict electrodynamic modeling of the elementary case of similar devices that allows optimistic forecasts on the improvement of radio engineering characteristics of the proposed device.","PeriodicalId":378024,"journal":{"name":"12th International Conference Microwave and Telecommunication Technology","volume":"18 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":"126877444","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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