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1990 20th European Microwave Conference最新文献

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Multiple Coupled Asymecal Coplanar Waveguides and Tiheir Application in Interdigitaied Filters 多耦合非对称共面波导及其在互数滤波器中的应用
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336159
M. Naghed, I. Wolff
{"title":"Multiple Coupled Asymecal Coplanar Waveguides and Tiheir Application in Interdigitaied Filters","authors":"M. Naghed, I. Wolff","doi":"10.1109/EUMA.1990.336159","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336159","url":null,"abstract":"The quasistatic characteristics of multiconductor coplanar waveguides are calculated using a simple and accurate finite difference method by taking the losses and metallization thickness of conductors into consideration. Its application in coplanar interdigitated bandpass filters on ceramic substrate is demonstrated. The comparison between calculated and measured scattering parameters up to 18 GHz shows a very good agreement.","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128715391","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
Lens-Fed Microwave and Millimetre-Wave Receivers with Integral Antennas 带集成天线的透镜馈源微波和毫米波接收机
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336084
C. Alder, C.R. Taylor, M. Dixon, R. Hodges, L. Irving, H. D. Rees
{"title":"Lens-Fed Microwave and Millimetre-Wave Receivers with Integral Antennas","authors":"C. Alder, C.R. Taylor, M. Dixon, R. Hodges, L. Irving, H. D. Rees","doi":"10.1109/EUMA.1990.336084","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336084","url":null,"abstract":"A family of microwave receivers is described with antenna and semiconductor components integrated on a common substrate, in a space small enough for packing into arrays. The antenna pattern is suitable for feeding via a dielectric lens, and a balanced mixer and I.F. amplifier are integrated on the antennas. Such receivers have been built to operate around 10 and 35 GHz, and show conversions loss similar to more conventional designs.","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128164553","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
Very High Performance d.c. Coupled MMIC FET Amplifiers 高性能直流耦合MMIC场效应管放大器
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336326
A. Mauri, E. Bastida, P. Chiappa, M. Feudale
{"title":"Very High Performance d.c. Coupled MMIC FET Amplifiers","authors":"A. Mauri, E. Bastida, P. Chiappa, M. Feudale","doi":"10.1109/EUMA.1990.336326","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336326","url":null,"abstract":"A new design approach for broadband d.c. coupled MMIC FET amplifier stages allowing substantial improvements as gain, bandwidth, noise, input matching and stability over the state of the art solutions is described. Design and performances of two MMIC amplifiers accordingly developed are reported.","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129733663","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
Effect of Anisotropic Layers on the Characteristcs of MMIC's 各向异性层对MMIC特性的影响
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336255
G. Maze, S. Tedjini, J. Bonnefoy
{"title":"Effect of Anisotropic Layers on the Characteristcs of MMIC's","authors":"G. Maze, S. Tedjini, J. Bonnefoy","doi":"10.1109/EUMA.1990.336255","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336255","url":null,"abstract":"This paper adresses the effect of anisotropic layers on the properties of Microwave and millimeterwave integrated circuits. A dynamic full wave analysis based on the Spectral Domain Technique has been developped and applied to calculate the propagation characteristics of microstrips, coplanar waveguides and slotlines for several orientations of the anisotropic substrates. We give the effect of the anisotropy on the effective permittivity, the characteristic impedance and the field pattern. This effect may be significant in several configurations. Some experimental results concerning the effective permittivity are given for Epsilam 10 substrate.","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127432637","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
Evaluation of Attenuations for Melting Snow and the Melting Layer 融雪和融雪层衰减的评价
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336271
Wei Zhang, E. Salonen, S. Karhu
{"title":"Evaluation of Attenuations for Melting Snow and the Melting Layer","authors":"Wei Zhang, E. Salonen, S. Karhu","doi":"10.1109/EUMA.1990.336271","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336271","url":null,"abstract":"Melting layer has been described with two melting particle models. The specific attenuation of melting snow, the average specific attenuation and the excess attenuation of the melting layer have been calculated by using two melting particle models and an approximate method in a frequency range of 1-1000 GHz for the precipitation rate below 12.5 mm/h. Numerical calculations have been performed with four drop-size distributions. The parameters a and b of the power law relation aRb for the average specific attenuation of the melting layer have been given in the frequency range.","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127193498","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
MESFET Shunt Oscillator Design with Dielectric Resonator as a Feedback Element 以介电谐振器为反馈元件的MESFET分流振荡器设计
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336328
L. Urshev, S. Haimov, S. Georgiev
{"title":"MESFET Shunt Oscillator Design with Dielectric Resonator as a Feedback Element","authors":"L. Urshev, S. Haimov, S. Georgiev","doi":"10.1109/EUMA.1990.336328","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336328","url":null,"abstract":"MESFET oscillators with dielectric resonators in the shunt feedback exhibit excellent performance, but their design is usually based on empirical methods or on computer optimization. In this paper a systematic approach, which allows direct determination of all circuit embedding elements for prescribed value of the load conductance and the resonator coupling coefficient, is described. Experimental results which verify the design technique are also presented.","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129951531","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 a Shaped Beam Antenna for AM-TV Broadcasting System 调幅电视广播系统的异形波束天线设计
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336291
B. Ladányi-Turóczy
{"title":"Design of a Shaped Beam Antenna for AM-TV Broadcasting System","authors":"B. Ladányi-Turóczy","doi":"10.1109/EUMA.1990.336291","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336291","url":null,"abstract":"In this paper a design method of a special shaped beam antenna is presented, which was constructed for the Hungarian PTT as a part of a microwave AM-TV broadcasting system. A special reflector and a new type of hybrid mode primary feed - \"box-horn\" - is discussed.","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131044860","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
Network Analyzer Calibration Without Impedance Standards 无阻抗标准的网络分析仪校准
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336044
A. Jostingmeier, G. Faby, M. Jenett, K. Schunemann
{"title":"Network Analyzer Calibration Without Impedance Standards","authors":"A. Jostingmeier, G. Faby, M. Jenett, K. Schunemann","doi":"10.1109/EUMA.1990.336044","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336044","url":null,"abstract":"This paper presents an alternative method for network analyzer calibration which shows three advantages: It avoids de-embedding the device under test, it does not need any impedance standard, and it allows characterizing an unknown two-port behind an arbitrary number of cascaded two-ports. It is thus directly applicable to planar circuits and to MICs.","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132886268","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
Two-Terminal Devices in Millimeter-Wave Range: Physical Analysis and Future Trends 毫米波范围内的双端器件:物理分析和未来趋势
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336168
P. Rolland, M. Friscourt, C. Dalle, D. Lippens, N. Haese
{"title":"Two-Terminal Devices in Millimeter-Wave Range: Physical Analysis and Future Trends","authors":"P. Rolland, M. Friscourt, C. Dalle, D. Lippens, N. Haese","doi":"10.1109/EUMA.1990.336168","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336168","url":null,"abstract":"This paper reviews the advance made in the perfomance of millimeter-wave two-terminal devices, mainly Gunn, IMPATT and resonant-tunneling diodes, on the basis of the semiconductor material systems used (Si, GaAs, InP).","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130864314","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
Microwave On-Wafer Characterization and Modelling of Schottky Barrier Diodes 肖特基势垒二极管的微波片上表征与建模
1990 20th European Microwave Conference Pub Date : 1990-10-01 DOI: 10.1109/EUMA.1990.336136
R. Vogel
{"title":"Microwave On-Wafer Characterization and Modelling of Schottky Barrier Diodes","authors":"R. Vogel","doi":"10.1109/EUMA.1990.336136","DOIUrl":"https://doi.org/10.1109/EUMA.1990.336136","url":null,"abstract":"A simple method is described to determine the equivalent circuit of the forward- and reverse-biased Schottky diode. The parameters of the circuit can be extracted from S-matrix measurements carried out in a relatively wide frequency range (90-18090 MHz) with the use of the Cascade probe station and the HP8510 network analyser. In particular, the bias dependence of the series resistance of the semiconductor region under the Schottky junction can be determined. The additional advantage of this technique is the ability to derive from the measurements, the values of the junction capacitance even for forward-bias conditions which exclude the use of the conventional C-V characterization technique.","PeriodicalId":248044,"journal":{"name":"1990 20th European Microwave Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125429804","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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