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1987 17th European Microwave Conference最新文献

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Determination of the MESFET Resistive Parameters using Rf-Wafer Probing 利用rf晶圆探针测定MESFET电阻参数
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333673
R. Vogel
{"title":"Determination of the MESFET Resistive Parameters using Rf-Wafer Probing","authors":"R. Vogel","doi":"10.1109/EUMA.1987.333673","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333673","url":null,"abstract":"A simple method has been proposed to measure the resistive parameters of MESFET's. An equivalent circuit of the forward biased FET valid in a low frequency limit which allows to determine the gate, source and drain parasitic resistances from the measured parameters was developed. The ideality factor of the gate diode and the channel resistance can also be simply determined. The method does not require separate DC characterisation and can be applied in conjunction with the small-signal microwave S-matrix measurements.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115701838","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: 9
A Fully-Integrated, 0.5 Watt, 2 to 6 GHz MMIC Amplifier 全集成，0.5瓦，2至6 GHz MMIC放大器
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333722
B. Maoz, H. Badawi, J. Faguet, R. Pengelly
{"title":"A Fully-Integrated, 0.5 Watt, 2 to 6 GHz MMIC Amplifier","authors":"B. Maoz, H. Badawi, J. Faguet, R. Pengelly","doi":"10.1109/EUMA.1987.333722","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333722","url":null,"abstract":"A fully integrated 2-6 GHz, two-stage, 0.5 watt MMIC amplifier has been designed, fabricated and tested. This single-chip amplifier features a gain of 14.5 +/- 0.9 dB, an input VSWR better than 2:1 and an output power greater than 0.5 watt. Chip size is only 1.0 by 2.0 mm. Both small and large signal FET models used in the design are software generated, with measured data used for comparison. We believe this to be the first published paper reporting such a single-ended MMIC power amplifier with high gain and output power over such bandwidths within a chip area of 2 square mm.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115732947","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
A Unified Ridge Structure for Evanescent Mode Wideband Harmonic Filters: Analysis and Applications 一种用于倏逝模宽带谐波滤波器的统一脊结构:分析与应用
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333719
A. Saad
{"title":"A Unified Ridge Structure for Evanescent Mode Wideband Harmonic Filters: Analysis and Applications","authors":"A. Saad","doi":"10.1109/EUMA.1987.333719","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333719","url":null,"abstract":"This paper present an accurate analysis of various applications of a double antipodal ridge waveguide structure which is loaded with different dielectric materials Design parameters, i.e. the cutofff frequencies of the TE10 and TE20 modes, equivalent dielectric constant, characteristic and gap impedances have been calculated. This versatile type of ridge structure can be considered a unified structure for evanescent-mode ridge waveguide lowpass and bandpass harmonic filters. A great deal of flexibility in the choice of size, power handling capability, out-of-band isolation, and bandwidth can be achieved. The accuracy of the analysis has been verified by the development of a widehand bandpass filter using evanescent mode serrated double antipodal ridge structure. Test results are provided.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125230309","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: 15
Recent Advances in the Use of Sub-Millimetric Wave Techniques to Obtain Backscatter Information at the UK National Scale Modelling Centre 利用亚毫米波技术获取后向散射信息的最新进展，英国国家尺度模型中心
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333648
S. Bathe, B. E. Prewer, G. Villis
{"title":"Recent Advances in the Use of Sub-Millimetric Wave Techniques to Obtain Backscatter Information at the UK National Scale Modelling Centre","authors":"S. Bathe, B. E. Prewer, G. Villis","doi":"10.1109/EUMA.1987.333648","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333648","url":null,"abstract":"Systems at sub-millimetric wavelengths used for obtaining detailed radar backscatter information on scale model targets are discussed. A full illumination 890 GHz amplitude and phase measuring system and a new spot scanning radar which provides complementary information are described. The innovative development of polarization transformation techniques which provide data at all desired radar polarization combinations, and the consequent development of a full scattering-matrix system, are presented. The extension of these methods to other submillimetric wavelengths obtained from optically pumped laser sources is also discussed.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127362577","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
Theoretical and Experimental Characterisation of a Travelling-Wave Frequency Doubler using Generalised Volterra Series Representation 用广义Volterra级数表示的行波倍频器的理论和实验表征
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333736
V. Krozer, K. Fricke, H. Hartnagel
{"title":"Theoretical and Experimental Characterisation of a Travelling-Wave Frequency Doubler using Generalised Volterra Series Representation","authors":"V. Krozer, K. Fricke, H. Hartnagel","doi":"10.1109/EUMA.1987.333736","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333736","url":null,"abstract":"Applying the generalized Volterra series approach we have analyzed a four-port frequency doubler. With this new analysis technique it has become possible to determine the influence of several distinct circuit parameters on output power. Especially, the contribution of the reflection coefficients has been evaluated. Comparison with experimental results revealed good agreement with theoretical values.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127458559","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
A Novel Method for Calculating the Noise Figure of Microwave MESFET Mixers 一种计算微波MESFET混频器噪声系数的新方法
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333779
J. Dreifuss, A. Madjar, A. Bar-Lev
{"title":"A Novel Method for Calculating the Noise Figure of Microwave MESFET Mixers","authors":"J. Dreifuss, A. Madjar, A. Bar-Lev","doi":"10.1109/EUMA.1987.333779","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333779","url":null,"abstract":"A new computer analysis method is presented by which the noise contributions of the various noise sources within a MESFET mixer can be determined and its overall single side-band and double sideband noise figure and noise temperature calculated. The method utilizes a frequency conversion matrix of a MESFET mixer which was described previously. The simulation program was run for a mixer circuit based on NEC720 transistor and the results for the noise sources and noise figure behaviour as functions of the LO power are presented and compared to measured values. An optimal operating point, from the standpoint of minimum noise figure, can thus be determined for transistor biasing conditions and the LO input power.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125329621","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
Eualuation of a Contacting Phased Array for Hyperthermic Treatment of Lung Tumours 一种接触式相控阵热疗肺肿瘤的评价
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333755
J. Conway, A. Anderson, P. Cudd, F. Smith, M. Hawley
{"title":"Eualuation of a Contacting Phased Array for Hyperthermic Treatment of Lung Tumours","authors":"J. Conway, A. Anderson, P. Cudd, F. Smith, M. Hawley","doi":"10.1109/EUMA.1987.333755","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333755","url":null,"abstract":"Hyperthermia is now recognised as a valuable aid to orncologists in the treatment of many cancers [1,21. The usual therapy regime combines radiotherapy or chemotherapy with hyperthermia, and the ideal treatmernt with microwave hyperthermia would allow a tumour to be heated to 430C or higher without damaging any healthy tissue. Localised hyperthermia techniques are an attempt to reach this ideal situation, while regional and whole body hyperthermia are more systemic. Since each tumour presents a different problem (e.g. shape and location), it is ur-nlikely that an ideal solution will be achieved, certainly not from a single type of applicator system.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"15 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122366423","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
Modular Source-Type 3D Analysis of Scattering Parameters for General Discontinuities, Components and Coupling Effects in (M)MICs (M)MICs中一般不连续面散射参数、分量及耦合效应的模源型三维分析
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333772
R. Jansen, W. Wertgen
{"title":"Modular Source-Type 3D Analysis of Scattering Parameters for General Discontinuities, Components and Coupling Effects in (M)MICs","authors":"R. Jansen, W. Wertgen","doi":"10.1109/EUMA.1987.333772","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333772","url":null,"abstract":"A deterministic full-wave solution to the hybrid-mode characterisation of basic and non-elementary structures in (M)MICs is described. It is modular, not restricted to a few specific shapes and involves surface wave excitation and coupling effects. Results up to the full-wave 3d analysis of simple strip filters treating these structures as one field-theoretical block are presented. They demonstrate the potential of the approach for the solution of highly complex (M)MIC design problems.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122121113","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: 23
A Millimeter-Wave Low-Range Radar altimeter for Helicopter Applications - System Design 直升机用毫米波低距离雷达高度计-系统设计
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333769
M. Lange, J. Detlefsen, M. Bockmair, U. Trampnau
{"title":"A Millimeter-Wave Low-Range Radar altimeter for Helicopter Applications - System Design","authors":"M. Lange, J. Detlefsen, M. Bockmair, U. Trampnau","doi":"10.1109/EUMA.1987.333769","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333769","url":null,"abstract":"A 35 GHz high resolution helicopter altimeter using the FMCW principle is described, which gives precise height information especially in the region close to ground. The system uses full digital data processing including the FM sweep linearisation and a near reflection cancellation. Inflight tests confirm the ability of the system to effectively support helicopter autorotation landings.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128574677","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
Integrated Slot Line Antenna with SIS Mixer for Focal Plane Imaging Applications 集成槽线天线与SIS混频器的焦平面成像应用
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333778
R. Murowinski, A. Skalare, J. Johansson, E. Kollberg
{"title":"Integrated Slot Line Antenna with SIS Mixer for Focal Plane Imaging Applications","authors":"R. Murowinski, A. Skalare, J. Johansson, E. Kollberg","doi":"10.1109/EUMA.1987.333778","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333778","url":null,"abstract":"Recently, the possibility of constructing millimeter wave imaging array receivers for use in radio astronomy has excited much interest, In this paper, we present results obtained to date in efforts to design a prototype imaging receiver for operation at 100 GHz.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126999054","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
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