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2015 Conference on Microwave Techniques (COMITE)最新文献

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Development of a multichannel vector network analyzer for "In Situ" measurement of radar antennas 用于雷达天线“原位”测量的多通道矢量网络分析仪的研制
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120317
Adam Szullo, J. Orban, G. Mikó
{"title":"Development of a multichannel vector network analyzer for \"In Situ\" measurement of radar antennas","authors":"Adam Szullo, J. Orban, G. Mikó","doi":"10.1109/COMITE.2015.7120317","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120317","url":null,"abstract":"This paper presents how a developed multichannel vector network analyzer, combined with the near-field measurement method, can significantly increase the reliability of surveillance services to air traffic control, by providing a faster measurement potential of the radar antenna's radiation pattern. A systematic radiation pattern check is vital to maintain the expected radar performance and safe operation.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128165391","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
Linearly polarized HMSIW U-slot antenna 线极化HMSIW u槽天线
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120225
P. Hubka, J. Lacik
{"title":"Linearly polarized HMSIW U-slot antenna","authors":"P. Hubka, J. Lacik","doi":"10.1109/COMITE.2015.7120225","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120225","url":null,"abstract":"In this paper, a linearly polarized half-mode substrate integrated waveguide (HMSIW) U-slot antenna is proposed. It is based on a combination of U-shaped slot etched in the HMSIW top wall and two shorts placed in this slot. Thanks to this configuration, a linearly polarized antenna with maximum radiation in the normal direction is obtained. The antenna is designed for the operating frequency band of 10 GHz with help of CST Microwave Studio. Experimental results prove that the antenna with a HMSIW-to-GCPW (grounded coplanar waveguide) transition radiates linearly polarized electromagnetic wave and achieves the impedance bandwidth of 3.2 % for reflection coefficient less than -10 dB and gain of 6.01 dBi.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124818048","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
Dielectric resonator antenna 介电谐振器天线
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120334
Petr Kopecký, V. Závodný
{"title":"Dielectric resonator antenna","authors":"Petr Kopecký, V. Závodný","doi":"10.1109/COMITE.2015.7120334","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120334","url":null,"abstract":"This article is focused on using a dielectric resonator as a radiating element of a antenna with the aim to reduce dimensions of such antennas compared to classical microstrip antennas. Such antenna was build and its parameters tested in frequency band of 2.9 to 3.1 GHz.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123750819","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: 54
Modeling of precise indoor positioning system 精确室内定位系统建模
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120322
Luděk Zaplatílek, M. Pola, P. Bezousek
{"title":"Modeling of precise indoor positioning system","authors":"Luděk Zaplatílek, M. Pola, P. Bezousek","doi":"10.1109/COMITE.2015.7120322","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120322","url":null,"abstract":"Precision indoor positioning system intended for fire fighters and members of rescue corps is currently developed at the University of Pardubice. Each team member is equipped with a transmitter, generating a unique UWB OFDM signal in periodic pulses. Around the surveyed building several receiver stations are deployed receiving the UWB signals and measuring their time of arrivals. Several TDOA methods are used namely 2D iterative, 3D iterative and the Ralph Bucher method to extract transmitters' positions. Unfortunately each received signal contains not only a direct signal but also its echoes due to reflections at walls. That is why the signals are at first correlated with the known transmitted signal to obtain a rough estimation of the pulses time positions and then a spectral analysis method (SAM) is applied to separate the direct signal from its echoes to get precise time delay of the direct signal (the pseudorange). In this paper a virtual experiment with a model of this system is described and position accuracy is analyzed.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126470274","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
Numerical and experimental studies of multimode waveguide Van-Atta array 多模波导Van-Atta阵列的数值与实验研究
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120318
Y. Yukhanov, I. Merglodov, E. V. Kriuk, T. Privalova, I. Ilyin
{"title":"Numerical and experimental studies of multimode waveguide Van-Atta array","authors":"Y. Yukhanov, I. Merglodov, E. V. Kriuk, T. Privalova, I. Ilyin","doi":"10.1109/COMITE.2015.7120318","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120318","url":null,"abstract":"This paper represents numerical and experimental studies of multimode waveguide Van-Atta array. It is shown that the use of multimode waveguides under certain conditions, allows to expand the angular sector of monostatic diagram of radar cross-section to the maximum possible value of ±450 relative to the normal to the plane of the array. Radiation pattern of the radiating elements in this case is equal to the radiation pattern of the Huygens element. Conducted research has shown good match between the numerical and experimental data.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133257758","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: 7
Methodology for realization of given BER in FSO systems under effect of internal and external noises 内外噪声作用下FSO系统给定误码率的实现方法
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120319
Tsvetan Mitsev, E. Ferdinandov
{"title":"Methodology for realization of given BER in FSO systems under effect of internal and external noises","authors":"Tsvetan Mitsev, E. Ferdinandov","doi":"10.1109/COMITE.2015.7120319","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120319","url":null,"abstract":"A methodology to compensate for the influence of external noises on the set value of BER, respectively the SNR, at the output of the optical receiver of the FSO systems has been developed. This compensation is achieved by increasing the power in the input of the receiver's photodetector together with a corresponding expansion of the optical beam of the transmitter. An important point in the methodology is finding the optimal angle of divergence of the laser beam. At this angle, the required transmitter's power obtains a minimum value.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123519003","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
Design of varactor tuned bandpass filter 变容调谐带通滤波器的设计
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120341
A. Gołaszewski, M. Zukocinski, A. Abramowicz
{"title":"Design of varactor tuned bandpass filter","authors":"A. Gołaszewski, M. Zukocinski, A. Abramowicz","doi":"10.1109/COMITE.2015.7120341","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120341","url":null,"abstract":"The tunable bandpass filter is presented. The filter is realized in microstrip technology employing two stepped-impedance resonators tuned with varactor diodes. The filter has constant absolute bandwidth of 30 MHz in the frequency range from 380 MHz to 920 MHz. The insertion loss is lower than 5 dB and return loss higher than 17 dB in the full tuning range. The out of band attenuation is higher than 40 dB at frequencies below the passband and is higher than 50 dB at frequencies above the passband. The first spurious modes are observed at 3 GHz. Absolute bandwidth and the time delay in the full tuning range change by 33% only while center frequency changes 242%.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129139925","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
Statistical approach to measurements with microwave multi-port reflectometer and optimization of its construction 微波多端口反射计测量的统计方法及结构优化
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120229
A. L’vov, R. V. Geranin, N. Semezhev, P. A. L'vov
{"title":"Statistical approach to measurements with microwave multi-port reflectometer and optimization of its construction","authors":"A. L’vov, R. V. Geranin, N. Semezhev, P. A. L'vov","doi":"10.1109/COMITE.2015.7120229","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120229","url":null,"abstract":"A new universal technique for microwave load complex reflection coefficient estimation with an arbitrary multiport reflectometer based on the solution of its quadric equations by the maximum likelihood method is proposed. The expressions for error matrix of estimating parameters are obtained in linear approximation that allows one to investigate analytically the measuring uncertainties. An optimization method of multiport parameters for measurement in narrow and wide frequency ranges is described. The results of computer simulation confirming the theoretical conclusions are given.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116286838","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: 8
Tests of wind parameters as predictors of free space optic link attenuation 风参数作为自由空间光链路衰减预测因子的试验
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120329
O. Fiser, V. Brazda, V. Schejbal
{"title":"Tests of wind parameters as predictors of free space optic link attenuation","authors":"O. Fiser, V. Brazda, V. Schejbal","doi":"10.1109/COMITE.2015.7120329","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120329","url":null,"abstract":"Institute of Atmospheric Physics has measured in cooperation with University of Pardubice atmospheric attenuation on experimental FSO link on 830 and 1550 nm for 4 years. Experimental site is located at meteorological observatory on the isolated mountain with frequent fog, low clouds and strong wind occurrence. Measured attenuation is correlated with the mean horizontal wind speed, mean 3D wind speed, turbulence intensity, turbulent energy, standard deviation of the wind speed and the highest wind gust. Simple empirical models estimating attenuation of FSO link from wind parameters are formulated and verified through our experimental activity.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114838132","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
A prototype of pulse electromagnetic field standard setup with envelope shaping 带包络整形的脉冲电磁场标准装置样机
2015 Conference on Microwave Techniques (COMITE) Pub Date : 2015-04-22 DOI: 10.1109/COMITE.2015.7120336
P. Bieńkowski, Jaroslaw Emilianowicz, B. Zubrzak
{"title":"A prototype of pulse electromagnetic field standard setup with envelope shaping","authors":"P. Bieńkowski, Jaroslaw Emilianowicz, B. Zubrzak","doi":"10.1109/COMITE.2015.7120336","DOIUrl":"https://doi.org/10.1109/COMITE.2015.7120336","url":null,"abstract":"Paper presents a concept of pulse electromagnetic field (PEMF) standard setup with envelope shaping. Analysis of EMF sources with particular pulse envelopes is performed. Authors presented novel approach to build standard setup, that allow to shape envelope of generated PEMF. A prototype and principal of operation was described, two methods of envelope data handling presented and also a preliminary results of prototype testing.","PeriodicalId":250220,"journal":{"name":"2015 Conference on Microwave Techniques (COMITE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121546029","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
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