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1986 16th European Microwave Conference最新文献

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A Portable Six-Port - Network Analyzer - Application in X and Ka Band 便携式六端口网络分析仪-在X和Ka波段的应用
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334286
M. Malkomes, R. Walsdorf, F. Reiffert, D. Seidenberg, P. Pogatzki
{"title":"A Portable Six-Port - Network Analyzer - Application in X and Ka Band","authors":"M. Malkomes, R. Walsdorf, F. Reiffert, D. Seidenberg, P. Pogatzki","doi":"10.1109/EUMA.1986.334286","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334286","url":null,"abstract":"The design and performance of a portable 6-port network analyzer is presented. A data acquisition concept utilizing high performance electronic integrated circuitry together with integrated microstrip and fin-line 6-port detector modules have been developed and employed for two experimental setups in X- and Ka-band respectively. Full waveguide band operation with high accuracy performance has been achieved with fully automated and error corrected measurement procedures.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125554551","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
Reflection Monitor for an Oversized Circular Waveguide 超大圆波导反射监视器
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334300
M. Kitliński, G. Hochschild, W. Wiesbeck
{"title":"Reflection Monitor for an Oversized Circular Waveguide","authors":"M. Kitliński, G. Hochschild, W. Wiesbeck","doi":"10.1109/EUMA.1986.334300","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334300","url":null,"abstract":"A new set-up to determine the power relation between transmitted and reflected waves propagating in a highly oversized cylindrical waveguide is presented. This system is up to now the only known possibility of a high directivity measurement in a highly oversized waveguide, where arbitrary modes in broad range are propagated alternatively or even simultaneously. The function of a bidirectional coupler is achieved from the free space radiation of a linear array of holes in the wall of the waveguide. The radiated electromagnetic field is sampled by two receiving antennas placed at opposite locations. The present application is the reflection monitor used at the output of high-power gyrotrons in the 130 - 160 GHz frequency range.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128857876","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
Efficient Modelling Technique of Lossy Microstrip Line Sections in Digital GaAs Circuits 数字砷化镓电路中有损微带线段的高效建模技术
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334274
N. Moisan, J. Floc'h, J. Citerne
{"title":"Efficient Modelling Technique of Lossy Microstrip Line Sections in Digital GaAs Circuits","authors":"N. Moisan, J. Floc'h, J. Citerne","doi":"10.1109/EUMA.1986.334274","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334274","url":null,"abstract":"An engineering solution based on an \"ad hoc\" synthesis of the impulse response, the forward and the backward characteristic impedances at a given terminal node is presented. The governing principle of this synthesis is to ensure a continuous transition from the quite distributed behaviour of the network (at high frequencies) to the quite lumped one (at low frequencies). Once this \"adhoc\" synthesis is done, the lossy line sections is interpreted as a recursive filter in order to combine high accuracy and stability with low computing time and storage requirements. Efficiency of this new extension is confirmed by several direct comparisons between computed and measured results on loaded or unloaded single and coupled microstrip line sections etched on GaAs substrates.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129171548","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
A Low-Cost Phase-Measurement Extension for Scalar Network-Analyzers 一种用于标量网络分析仪的低成本相位测量扩展
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334287
B. Neumeyer
{"title":"A Low-Cost Phase-Measurement Extension for Scalar Network-Analyzers","authors":"B. Neumeyer","doi":"10.1109/EUMA.1986.334287","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334287","url":null,"abstract":"This paper presents the extension of a scalar Network-Analyzer to a Vector-Network-Analyzer by a simple phase-measurement module. A complete phase-error correction is shown with one matched load and four (offset) shorts as calibration standards. Experimental results measured from 26,5 to 40 GHz confirm the high accuracy of the system.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129757630","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
Supercomputer-Aided Generalized Mixer Analysis and Optimization 超级计算机辅助广义混频器分析与优化
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334273
V. Rizzoli, C. Cecchetti, A. Neri
{"title":"Supercomputer-Aided Generalized Mixer Analysis and Optimization","authors":"V. Rizzoli, C. Cecchetti, A. Neri","doi":"10.1109/EUMA.1986.334273","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334273","url":null,"abstract":"The high computational power of modern supercomputers can be exploited by suitable program architectures to solve CAD problems that are practically beyond the reach of conventional scalar systems. In this way a direct harmonic-balance treatment of nonlinear circuits under multiple-frequency excitation becomes possible with attractive cost-to-performance ratios. The application of such an approach to microwave mixers is presented in the paper, and for the first time a direct mixer optimization is demonstrated.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127854729","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
Effects of Modulated Microwave and RF Fields on the Membrane of Neuronal Cells 调制微波和射频场对神经元细胞膜的影响
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334255
P. Bernardi, G. D'Inzeo, S. Pisa
{"title":"Effects of Modulated Microwave and RF Fields on the Membrane of Neuronal Cells","authors":"P. Bernardi, G. D'Inzeo, S. Pisa","doi":"10.1109/EUMA.1986.334255","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334255","url":null,"abstract":"In previous works we have developed a theoretical model simulating a nonthermal interaction mechanism suitable to justify possible electromagnetic wave effects at cellular membrane level. The model has been used to analyze the effects of the injection of an ELF sinusoidal current on the firing rate of pacemaker neurons. The analysis is useful also to study the effects of amplitude-modulated RF and microwave fields in view of possible, although not proven, detection effects. We now extend the theoretical analysis scanning the frequency and the amplitude of the sinusoidal exciting current and determining the effects on the spontaneous firing frequency. Finally, we perform a serie of experiments on snail neuronal cells carrying out a comparison between theoretical and experimental results.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124479384","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
Non-Invasive Measurement of Loss Factor in Dielectric Bodies by Microwave Phase Tomography 微波相位层析成像法无损测量介质损耗因子
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334277
R. Aitmehdi, A. Anderson, S. Sali
{"title":"Non-Invasive Measurement of Loss Factor in Dielectric Bodies by Microwave Phase Tomography","authors":"R. Aitmehdi, A. Anderson, S. Sali","doi":"10.1109/EUMA.1986.334277","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334277","url":null,"abstract":"The feasibility of phase tomography as a non-invasive measurement of loss factor is presented. Limitations of first order Born approximation using accurate simulation models are examined.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122431051","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 Analysis of Backed Cavity Archimedean Spiral Antenna 后腔阿基米德螺旋天线的数值分析
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334218
C. Brochard, J. Martinaud, J. Tourneur
{"title":"Numerical Analysis of Backed Cavity Archimedean Spiral Antenna","authors":"C. Brochard, J. Martinaud, J. Tourneur","doi":"10.1109/EUMA.1986.334218","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334218","url":null,"abstract":"A method of calculating the radiation and directivity pattern of planar Archimedean printed spiral antenna backed with an arbitrarily shaped reflector is described. Application of the equivalence principle and the reaction concept of Rumsey leads to the variational formulation of the integral equation expressing the electric field in terms of equivalent currents. The method takes into account the 2-D nature of the strips making it possible to handle the problem of the kernel singularity using on exact analytical method in the case of self-reaction. In other cases the current is assumed to be tangential to the centre-line and constant over the width of the strip which can be approximated by its centre-line. The current and its divergence are approximated by a finite element method (1-D linear elements for the spiral and 2-D linear elements for the reflector). The electromagnetic field radiated by these currents is then calculated and integrated over total space in order to obtain the directivity of the antenna.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130811634","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
Microwave Propagation Studies 微波传播研究
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334181
Y. Furuhama, J. Awaka
{"title":"Microwave Propagation Studies","authors":"Y. Furuhama, J. Awaka","doi":"10.1109/EUMA.1986.334181","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334181","url":null,"abstract":"Present status of microwave propagation research in Japan is presented. Three major fields, i.e. Terrestrial, Earth-space and Mobile propagation are extensively investigated. Multipath and rain effects, two major causes which degrade microwave propagation characteristics and countermeasures to reduce propagation impairments are also studied. Results of these studies are significant for designing new communication links.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128455060","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
Millimetre - Wavelength Cellular Radio: Propagation Measurements at 55GHz 毫米波蜂窝无线电:55GHz的传播测量
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334197
H. Thomas, G. L. Siqueira, R. Cole
{"title":"Millimetre - Wavelength Cellular Radio: Propagation Measurements at 55GHz","authors":"H. Thomas, G. L. Siqueira, R. Cole","doi":"10.1109/EUMA.1986.334197","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334197","url":null,"abstract":"Initial results obtained from a study of multipath propagation at 55GHz in a heavily built up urban mobile radio environment are presented. Statistical analysis of the results show a near Rayleigh distribution when the mobile receiver is distant from the transmitter, with significant deviations from Rayleigh when the reciever is near the transmitter, and line of sight transmission is possible. The power spectra obtained for the urban environment show a far greater high frequency component than power spectra obtained in an \"open countryside\" environment where propagation is less nultipath dependent. Initial results are very promising and indicate that millimetre wavelength cellular radio is a worthwhile area of study for future mobile communication systems.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131228078","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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