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1986 16th European Microwave Conference最新文献

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A New System for Microwave Holographic Imaging of Buried Services 埋地服务微波全息成像新系统
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334278
G. Junkin, A. Anderson
{"title":"A New System for Microwave Holographic Imaging of Buried Services","authors":"G. Junkin, A. Anderson","doi":"10.1109/EUMA.1986.334278","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334278","url":null,"abstract":"A new method for improving resolution without increasing operating frequency is proposed. This bistatic version of the holographic technique involves illuminating the buried services from a source antenna placed on, or implanted slightly below the interface. Resolution is improved by scanning in the surface wave region close to the interface. Computer simulations are used to predict the scattered field in sandy soils with 10 and 20% gravimetric moisture content at 300MHz. Some experimental simulations at 500MHz in tap water at 15°C illustrate the improvement in resolution gained by scanning in close proximity to the surface.","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":"130683706","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
A Cylindrical System for Quasi-Real Time Microwave Tomography 准实时微波层析成像的圆柱形系统
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334258
L. Jofre, E. Reyes, M. Ferrando, A. Elias, J. Romeu, M. Baquero, J. Rius
{"title":"A Cylindrical System for Quasi-Real Time Microwave Tomography","authors":"L. Jofre, E. Reyes, M. Ferrando, A. Elias, J. Romeu, M. Baquero, J. Rius","doi":"10.1109/EUMA.1986.334258","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334258","url":null,"abstract":"A cylindrical system for biomedical microwave tomography is presented. The circular algorithms and some numerical reconstructions are discussed. Finally the experimental set-up is described and some preliminary measurements are presented.","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":"121905688","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: 10
High Performance Beam Forming Network for Multi Contoured Beam Antennas 多轮廓波束天线的高性能波束形成网络
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334220
F. Rispoli, P. Vita, G. Doro, F. De Gennaro, G. Crone
{"title":"High Performance Beam Forming Network for Multi Contoured Beam Antennas","authors":"F. Rispoli, P. Vita, G. Doro, F. De Gennaro, G. Crone","doi":"10.1109/EUMA.1986.334220","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334220","url":null,"abstract":"A compact Beam Forming Network (BFN) for contoured beam antennas has been developed and tested in the 10.9 to 12.8 GHz band (16%). The BFN components are designed with efficient electromagnetic tools to reduce the insertion loss and the amplitude and phase spreadings at the output ports. Particular care has been dedicated to the mechanical design in order to minimize the mass, to avoid critical resonances and thermal gradients. The BFN is composed of two independent sections connected together. These are the power divider section with sixteen output signals and the phase shifter section which establishes the correct phase distribution. The BFN utilizes as key components branch guide couplers and ireses phase shifters whose the predicted electrical characteristics are in excellent agreement with the experiments. Moreover an innovative technique is adopted to compensate the phase errors of the network in the relative wide band without additional tuning elements.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"25 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":"124063950","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
Design and Synthesis of Patch Microwave Couplers 贴片微波耦合器的设计与合成
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334225
Vincent Fusco, J.A.C. Stewart
{"title":"Design and Synthesis of Patch Microwave Couplers","authors":"Vincent Fusco, J.A.C. Stewart","doi":"10.1109/EUMA.1986.334225","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334225","url":null,"abstract":"This paper describes a simple design and synthesis technique that allows an alternative to the standard quadrature hybrid coupler to be constructed. The alternative coupler consists of a rectangular patch of microstrip material whose dimensions have been selected in order to achieve a specified power coupling factor between output ports at a given frequency. Experimental and theoretical results are presented for the behaviour of these couplers as a function of frequency.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"23 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":"126533358","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: 6
A Waveguide-To-Microstrip Transition 波导到微带的转换
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334243
J. Piotrowski, W. Wojtasiak
{"title":"A Waveguide-To-Microstrip Transition","authors":"J. Piotrowski, W. Wojtasiak","doi":"10.1109/EUMA.1986.334243","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334243","url":null,"abstract":"The design and performance of a waveguide-to-microstrip transition is presented. The optimum bilateral finline taper has been used to match the fundamental mode waveguide characteristic impedance to a 50-ohm micro-strip mounted on a low dielectric substrate. The transverse resonance method has been applied to calculate characteristic impedance of bilateral finline taking into consideration the finite metallization thickness and substrate holding grooves. The experimental results of X-band transition are also given.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"145 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":"116105778","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 and Technology for High Yield Decade Bandwidth GaAs Monolithic Feedback Amplifier (0,3 - 3GHz) 高良率十频带砷化镓单片反馈放大器(0,3 - 3GHz)的设计与技术
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334261
M. Renvoise, N. Sebati, C. Kermarrec
{"title":"Design and Technology for High Yield Decade Bandwidth GaAs Monolithic Feedback Amplifier (0,3 - 3GHz)","authors":"M. Renvoise, N. Sebati, C. Kermarrec","doi":"10.1109/EUMA.1986.334261","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334261","url":null,"abstract":"A monolithic GaAs two stage feedback amplifier, with one decade bandwidth, 0,3 - 3 GHz, has been developped to demonstrate the validity of the MMIC's production technology. It yields 15db small signal gain, less than 5db noise figure with input and output VSWR better than 1,6. High processing and circuit yields are obtained.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"8 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":"126393450","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 High Power Millimeter Passive Solid State Limiter 大功率毫米级无源固态限幅器
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334185
A. Armstrong, J. Goodrich, W. Moroney
{"title":"A High Power Millimeter Passive Solid State Limiter","authors":"A. Armstrong, J. Goodrich, W. Moroney","doi":"10.1109/EUMA.1986.334185","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334185","url":null,"abstract":"The design of an array of limiter diodes arranged in series/parallel configuration to form an RF activated control window has enhanced significantly the performance of solid state control components. A monolithic element is formed using high resistivity silicon and fabricated in a beam lead form for easy mounting in a waveguide structure. Key features are high power, low loss and broad band characteristics. Results to date have shown 500 watt (1 microsec pulse) power capability with 25 dB limiting and 1.0 dB insertion loss for a dual element Q-band passive limiter. This is ~15 dB greater power handling than with conventional packaged diodes.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"102 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":"132017230","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
New Synthesis Method of Tapered Wire Antennas for Broadband Applications 宽带应用锥形线天线合成新方法
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334270
E. Vollmer, J. Hinken
{"title":"New Synthesis Method of Tapered Wire Antennas for Broadband Applications","authors":"E. Vollmer, J. Hinken","doi":"10.1109/EUMA.1986.334270","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334270","url":null,"abstract":"A broadband tapered V-antenna is designed by a new synthesis method for the geometry of the antenna. Because of its application to a broadband spectrometer, over a bandwidth of at least 20 : 1 the gain of the antenna should be nearly constant and the VSWR should be low. The characteristics of the designed antenna are analysed by a numerical method described by Richmond. An antenna version with resistively loaded ends of the wires has a maximum gain variation of 3.2 dB. The VSWR is equal to 1.7 over almost the entire frequency range, only peaking to 2.6 at the lowest frequency.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"121 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":"123681686","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
Analysis of Microslab Waveguide 微板波导分析
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334240
B. Young, T. Itoh
{"title":"Analysis of Microslab Waveguide","authors":"B. Young, T. Itoh","doi":"10.1109/EUMA.1986.334240","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334240","url":null,"abstract":"A rigorous mode matching analysis is applied to find the propagation characteristics of the microslab waveguide. An effective dielectric constant approach using the spectral domain method is used to support the results. The results agree well with experimental data for a ring oscillator.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"44 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":"116439829","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 Dual Reflector High Gain Microwave Omnidirectional Antenna 一种双反射面高增益微波全向天线
1986 16th European Microwave Conference Pub Date : 1986-10-01 DOI: 10.1109/EUMA.1986.334219
M. R. Staker
{"title":"A Dual Reflector High Gain Microwave Omnidirectional Antenna","authors":"M. R. Staker","doi":"10.1109/EUMA.1986.334219","DOIUrl":"https://doi.org/10.1109/EUMA.1986.334219","url":null,"abstract":"The design of a reflector system consisting of conic section reflectors rotated about an axis and fed using a biconical horn is outlined. Shaping of the main reflector to meet a required elevation radiation pattern is then described and some theoretical predictions of performance presented.","PeriodicalId":227595,"journal":{"name":"1986 16th European Microwave Conference","volume":"108 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":"124816517","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
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