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2008 14th Conference on Microwave Techniques最新文献

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A New Transformation of Bandpass Filter to Bandstop Filter Using Multilayer-Technique and U-Defected Ground Structure (DGS) 基于多层技术和u型缺陷接地结构(DGS)的带通滤波器到带阻滤波器的新型转换
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569919
A. Boutejdar, A. Batmanov, J. Macháč, E. Burte, A. Omar
{"title":"A New Transformation of Bandpass Filter to Bandstop Filter Using Multilayer-Technique and U-Defected Ground Structure (DGS)","authors":"A. Boutejdar, A. Batmanov, J. Macháč, E. Burte, A. Omar","doi":"10.1109/COMITE.2008.4569919","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569919","url":null,"abstract":"A novel compact microstrip bandpass/Bandstop filters realized by combining new Multilayer Method with electrically coupled microstrip U-shaped DGS resonators, is proposed. The proposed filters have low insertion loss and are compact in size due to the slow-wave effect. They also have sharp transition regions due to the presence of two- transmission zeros on both sides of their passband. The measured center frequency, bandwidth and insertion loss are 3.4 GHz, 40%, and 0.5 dB respectively. The simulated and measured results show good agreement and validate the proposed approach.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130783993","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
Volume of Atmospheric Turbulences Evaluation on the Basis of the Turbulent Area Quantification 基于湍流面积量化的大气湍流量评估
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569954
L. Dordová, O. Wilfert
{"title":"Volume of Atmospheric Turbulences Evaluation on the Basis of the Turbulent Area Quantification","authors":"L. Dordová, O. Wilfert","doi":"10.1109/COMITE.2008.4569954","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569954","url":null,"abstract":"This paper is focused on the Gaussian beam properties in the turbulent atmosphere. At first the optical wireless link is briefly introduced and the atmospheric transmission media is presented. The atmospheric turbulences are introduced and laser beam geometry is analyzed. For the Gaussian beam in the turbulent atmosphere we can calculate correlation between influenced laser beam and ideal Gaussian beam. The correlation is in relation with the volume of atmospheric turbulences, which can be evaluated by structure parameter refractive index. Idea of the turbulent area, the turbulent optical intensity envelope and the substitutive function is introduced. Expression of the volume of atmospheric turbulences by turbulent area is presented in this work.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131183984","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
Temperature Distribution Inside Wire Patch Cell 电线贴片单元内部温度分布
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569907
M. Salovarda, K. Malaric
{"title":"Temperature Distribution Inside Wire Patch Cell","authors":"M. Salovarda, K. Malaric","doi":"10.1109/COMITE.2008.4569907","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569907","url":null,"abstract":"In this paper the temperature distribution inside WPC is done. As most of biological effects caused by RF electromagnetic radiation are thermal, it was necessary to separate temperature rise because of WPC construction itself and temperature rise due to electromagnetic field levels. WPC is very popular structure for EMC tests because it is easy to build at very affordable cost. And what should not be ignored, WPC environment conditions inside are very easy controllable due to the fact that it fits to incubator.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129476000","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
Verification of Four Elements Helical Antennas Array Design Procedure 四元螺旋天线阵列设计程序的验证
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569937
J. Zemanovic, P. Hajach, P. Podhoransky
{"title":"Verification of Four Elements Helical Antennas Array Design Procedure","authors":"J. Zemanovic, P. Hajach, P. Podhoransky","doi":"10.1109/COMITE.2008.4569937","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569937","url":null,"abstract":"This paper is focused on design, simulation, realization and parameters measurement of the four element helical antennas array. First part of the article is dedicated to the design of helical antenna and their electrical characteristic calculation. The second part is dedicated to the four elements helical antennas array design and realization. Single helical element and array characteristics were calculated and then simulated using CST Microwave Studio software package. Measured, calculated and simulated antenna characteristics were compared to each other, to verify correlation between the theoretically and experimentally obtained data.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129190010","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: 5
Measurement of Electrical and Mechanical Oscillations of Yeast Cells Membrane in Acoustic Frequency Range 声学频率范围内酵母细胞膜电振荡和机械振荡的测量
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569909
F. Jelínek, J. Pokorný, J. Vanis, J. Hasek, J. Šimša
{"title":"Measurement of Electrical and Mechanical Oscillations of Yeast Cells Membrane in Acoustic Frequency Range","authors":"F. Jelínek, J. Pokorný, J. Vanis, J. Hasek, J. Šimša","doi":"10.1109/COMITE.2008.4569909","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569909","url":null,"abstract":"Frohlich postulated coherent polar oscillations as a fundamental biophysical property of biological systems. Pelling et al. detected recently mechanical vibrations of yeast cell membrane in the frequency range 0.5-2 kHz with atomic force microscope (AFM). This paper describes the measurement of electric activity of yeast cells at frequencies around 1 kHz and of mechanical vibrations of cell membrane. Synchronized and non- synchronized tubulin mutants of yeast cells were measured. The paper includes a description of the laboratory equipment with a platinum wire point sensor and a spectrum analyzer. Obtained results are in good agreement with AFM findings.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123806083","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
Design of Stripline for EMC Testing 电磁兼容测试带状线设计
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569925
M. Válek, T. Kořínek, T. Boštík
{"title":"Design of Stripline for EMC Testing","authors":"M. Válek, T. Kořínek, T. Boštík","doi":"10.1109/COMITE.2008.4569925","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569925","url":null,"abstract":"A comprehensive approach to the design of a stripline for EMC testing is given in this paper. The authors attention has been focused on the design items that are most crucial by the achievement of satisfactory value of the VSWR and the impedance matching at the feeding ports in the extended frequency range from 80 MHz to 1000 GHz. For this purpose, the Vivaldi-structure and other advanced structures were considered. The theoretical approach based on numerical simulations lead to conclusions which have been applied by the physical design and also evaluated by experimental results.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132632381","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
Measurement of Dielectric Properties of Moisture Textile 湿纺织品介电性能的测定
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569904
Marika Pourova, Radim Zajicek, L. Oppl, Jan Vrba
{"title":"Measurement of Dielectric Properties of Moisture Textile","authors":"Marika Pourova, Radim Zajicek, L. Oppl, Jan Vrba","doi":"10.1109/COMITE.2008.4569904","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569904","url":null,"abstract":"The measurement of dielectric parameters of wet textile materials is very important for the design of microwave drying and heating applicators in textile industry. In this contribution there are presented results of two measurement systems - Six-port measurement system and Agilent Impedance/material analyzer. Dielectric properties generally depend on the frequency of applied electromagnetic field, moisture content, temperature and density of materials. However, the amount of water in the drying materials is mostly a dominant factor.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129260757","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: 5
Bandwidth of Invisible Cloak Realized with Split Ring Resonators 用分环谐振器实现隐形斗篷的带宽
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569943
B. Ivsic, Z. Šipuš, J. Bartolić
{"title":"Bandwidth of Invisible Cloak Realized with Split Ring Resonators","authors":"B. Ivsic, Z. Šipuš, J. Bartolić","doi":"10.1109/COMITE.2008.4569943","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569943","url":null,"abstract":"Recently, an uniaxial multilayer cylinder cloak which does not scatter electromagnetic wave was proposed. The purpose of this paper is to analyze such a cloak and to characterize the achieved \"invisibility\" in mathematical terms by calculating the scattered field and equivalent blockage width - the structure width that is actually \"perceived\" by EM waves. For that purpose we have developed the GIDMULT algorithm for analyzing uniaxial multilayer structures of planar, circular-cylindrical and spherical shape. The results show that the analyzed metamaterial realization reduces the scattered field and is suitable only for excitation by a TM-polarized wave. Furthermore, due to the dispersion it works only in a narrow frequency band. It seems that analyzed structure is inferior to already known realizations of invisibility, e.g. by hard surfaces that can work for arbitrary polarization within larger frequency bandwidth, although suitable for only one direction of incoming wave.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123910717","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
On Using Orthogonal Polynomials for Transient Analysis of Wire Antennas 正交多项式在线天线瞬态分析中的应用
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569892
J. Laciki, Z. Raida
{"title":"On Using Orthogonal Polynomials for Transient Analysis of Wire Antennas","authors":"J. Laciki, Z. Raida","doi":"10.1109/COMITE.2008.4569892","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569892","url":null,"abstract":"In this paper two kinds of orthogonal polynomials - weighted Laguerre and Hermite polynomials - are used as temporal basis functions for the approximation of the transient responses of wire structures. Numerical schemes with these polynomials are derived and their properties are compared on an analysis of straight wires of different lengths. The comparisons and investigations show that the scheme with Hermite polynomials requires the lower number of temporal basis functions for short responses than the scheme with Laguerre polynomials, and vice versa.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"2008 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116051802","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
Slotted Applicator for Microwave Local Hyperthermia 用于微波局部热疗的开槽涂抹器
2008 14th Conference on Microwave Techniques Pub Date : 2008-04-23 DOI: 10.1109/COMITE.2008.4569942
J. Safarik, J. Vrba
{"title":"Slotted Applicator for Microwave Local Hyperthermia","authors":"J. Safarik, J. Vrba","doi":"10.1109/COMITE.2008.4569942","DOIUrl":"https://doi.org/10.1109/COMITE.2008.4569942","url":null,"abstract":"The object of this work is to design a microwave applicator for local thermotherapy, which is work on the principle of a slot line. The working frequency of this applicator is 434 MHz. A 3D simulator of electromagnetic field is used for numeric simulation and consequential optimalization. After that, the designed applicator is made and its reflectance and specific absorption rate is measured in phantom of biologic texture. At the end of the work results of all measurements are compared to results of simulation.","PeriodicalId":306289,"journal":{"name":"2008 14th Conference on Microwave Techniques","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123535276","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
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