发布求助
文献互助 智能选刊 最新文献

1975 5th European Microwave Conference最新文献

筛选
英文 中文
SICARID-TCL a New Microwave System for the Transfer of Informations from the Track to the Wagon in Railway Networks SICARID-TCL是一种用于铁路网络中从轨道到车厢信息传输的新型微波系统
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332217
F. Becker, W. Mermolia
{"title":"SICARID-TCL a New Microwave System for the Transfer of Informations from the Track to the Wagon in Railway Networks","authors":"F. Becker, W. Mermolia","doi":"10.1109/EUMA.1975.332217","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332217","url":null,"abstract":"The transfer of information from the railway network to passing locomotives is a very important factor in all systems for automatic train control. Systems with intermittent transfer of information from fixed points to the locomotives offer in addition to the information transfer the advantage of exact locating the locomotive. Thus direct train control without reply to central control points is possible. SICARID-TCL (Train Control and Locating) is such a system operating in a broadband scanning made from 2.9 to 4.05 GHz. By applying MIC-technology with integrated semiconductor chips for the microwave moduls and the latest techniques for the analogue and digital circuitry a failure rate of lower than 10-6 with an information capacity of 1013 bit at high transmission rate is achieved.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124894981","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
Doppler Speed Sensors for Automotive Applications 汽车用多普勒速度传感器
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332218
R. Ross, M. Howes
{"title":"Doppler Speed Sensors for Automotive Applications","authors":"R. Ross, M. Howes","doi":"10.1109/EUMA.1975.332218","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332218","url":null,"abstract":"The problem of wheel and vehicle speed measurements in automotive antiskid systems is discussed and a microwave doppler radar solution proposed. A straightforward design approach for self-mixing Gunn device radar detectors using a new current waveform approximation is presented allowing simple observation of the effects of device and circuit parameter variations on the overall performance of the detector. The operation of transferred-electron and baritt devices is compared with particular reference to sensitivity and reliability under the strict environmental conditions imposed by the application. The use and performance of fully integrated microstrip circuitry is considered in the light of the cost/performance ratios required in the motor industry, the result being a hybrid integrated circuit with the oscillator, antenna and amplifier located on the same substrate.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115988324","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 Cooled GaAs Mesfet Amplifier Operating at 12 GHz with 1.6 dB Noise Figure 一种工作频率为12 GHz、噪声系数为1.6 dB的制冷GaAs Mesfet放大器
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332213
C. Liechti, R. B. Larrick, D. Mellor
{"title":"A Cooled GaAs Mesfet Amplifier Operating at 12 GHz with 1.6 dB Noise Figure","authors":"C. Liechti, R. B. Larrick, D. Mellor","doi":"10.1109/EUMA.1975.332213","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332213","url":null,"abstract":"The performance of a three-stage GaAs MESFET amplifier operating in the 11.7 to 12.2 GHz U.S. satellite communication band is characterized between 40°K and 300°K. At room temperature, the noise figure is 5.3 dB (Te=700°K) and the gain is 18 dB. By cooling to 40°K, the noise figure decreases to 1.6 dB (Te=130°K) while the gain increases to 31 dB.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122780551","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 26.5-to-40-GHz Planar Balanced Mixer 26.5- 40 ghz平面平衡混频器
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332119
U. Gysel
{"title":"A 26.5-to-40-GHz Planar Balanced Mixer","authors":"U. Gysel","doi":"10.1109/EUMA.1975.332119","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332119","url":null,"abstract":"The design and performance of a MIC 26.5-40 GHz mixer is described. The mixer utilizes GaAs beam lead Schottky barrier diodes with a cutoff frequency of 750 GHz in a balanced arrangement with slot-line and coplanar waveguide. Conversion loss for the full waveguide band is 7.6 ± 0.5 dB with + 6 dBm LO drive. VSWRs are less than 2:1 for the RF port and 3.4:1 for the LO port. The mixer exhibits excellent LO to RF isolation, typically 25 dB and handles IF frequencies up to 8 GHz.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"52 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114045134","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: 19
Equations for Microstrip Circuit Design 微带电路设计方程
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332206
E. Hammerstad
{"title":"Equations for Microstrip Circuit Design","authors":"E. Hammerstad","doi":"10.1109/EUMA.1975.332206","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332206","url":null,"abstract":"A method for determining the accuracy of computed impedance and wavelength data for microstrip is proposed. It is shown that the standard equations of Wheeler and Schneider have rather large errors. Revised equations for microstrip impedance and wavelength are given both for analysis and synthesis with accuracy better than 1%. A simple, accurate equation for the microstrip open circuit is presented. Experimental data on microstrip T-junctions are compared with existing theories. A new accurate equation is given for the reference plane displacement in the stub arm. Corrections are proposed in the existing equations for the other parameters of the equivalent circuit.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"452 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122162011","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: 537
New Design Techniques for Microstrip Antenna Arrays 微带天线阵列的新设计技术
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332161
J. James, G. Wilson
{"title":"New Design Techniques for Microstrip Antenna Arrays","authors":"J. James, G. Wilson","doi":"10.1109/EUMA.1975.332161","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332161","url":null,"abstract":"The radiation resistance of an open-circuit microstrip termination is to a good approximation, a simple function of the strip width thus suggesting a straightforward yet effective means of element control when used in a large array; furthermore the array bandwidth can be controlled to some extent. The design of linear and two dimensional resonant arrays based on this design procedure is formulated and examples at X and J band are outlined; the beamwidths and sidelobe levels are of the order ± 4.5° and -16dB respectively. The extension of the new technique to travelling wave arrays, circular polarisation and various substrates is under investigation and will be mentioned; computational aspects throughout will be discussed.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117108994","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: 21
Microwave Tube Evolution over the Past Decade 微波管在过去十年的发展
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332170
P. Guenard
{"title":"Microwave Tube Evolution over the Past Decade","authors":"P. Guenard","doi":"10.1109/EUMA.1975.332170","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332170","url":null,"abstract":"This falloff in the number of microwave-tube communications has not been accompanied by a corresponding reduction in industrial activity, as the sales figures show, but instead illustrates an evolution in the nature of the work going on in this field. In particular, it shows that research activitv has been largely replaced by develoDment2 which by its very nature gives rise to fewer publications. In addition, the publications made over the past decade have been concentrated on the conventional tube models: klystrons, traveling-wave tubes and crossed-field tubes.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123353756","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
Recent Advances in Radio-Wave Propagation Above 10 GHz 10ghz以上无线电波传播的最新进展
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332131
F. Fedi
{"title":"Recent Advances in Radio-Wave Propagation Above 10 GHz","authors":"F. Fedi","doi":"10.1109/EUMA.1975.332131","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332131","url":null,"abstract":"In this survey attention is focused on attenuation and depolarisation of radiowaves due to rainfall or multipath activity which play a major role in the design of terrestrial digital radio relay systems at these frequencies and which may compromise the possibility of frequency re-use by employing two orthogonally polarised carriers at the same frequency. Re cent theoretical and experimental results are illustrated and prediction methods presently available for system design are reviewed. Research activit ies 'in this sphere under way in Europe are outlined.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"339 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114074064","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
Acoustic Model L-Band Aircraft Antenna Radiation Coverage Questions 声学模型l波段飞机天线辐射覆盖问题
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332188
H. Hayre
{"title":"Acoustic Model L-Band Aircraft Antenna Radiation Coverage Questions","authors":"H. Hayre","doi":"10.1109/EUMA.1975.332188","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332188","url":null,"abstract":"The number and location of cavity-blocked T-slot antenna for a specified radiation coverage on F-102 aircraft were optimized using an acoustic airframe model, and a special 0.2 MHz (thickness mode) spherical transducer to model the antenna. The model results were verified using the full-scale electromagnetic field data obtained at 1775 MHz for circular polarization. This technique is inexpensive, easy and quick to implement, and as exact as the match between the radiation patterns of the transducer and the antenna it represents. Computer simulation usually yields approximate results since surface wave, shadow, and multiple scattering effects cannot be incorporated. Similarly high frequency R.F. modeling, when feasible, is sensitive to model surface roughness, and is not suited for studying antenna location effects.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128005324","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
Power Amplification of Microwave FM Communications Signals using a Phase-Locked Voltage-Tuned Oscillator 锁相调频振荡器对微波调频通信信号的功率放大
1975 5th European Microwave Conference Pub Date : 1975-10-01 DOI: 10.1109/EUMA.1975.332193
M. Hines, R. Posner, A. Sweet
{"title":"Power Amplification of Microwave FM Communications Signals using a Phase-Locked Voltage-Tuned Oscillator","authors":"M. Hines, R. Posner, A. Sweet","doi":"10.1109/EUMA.1975.332193","DOIUrl":"https://doi.org/10.1109/EUMA.1975.332193","url":null,"abstract":"This paper describes the use of a \"single-stage\" phase-lock-loop oscillator to provide high gain power amplification of FM communication signals as used in radio relay of multiplex telephone and television. The paper is largely theoretical, dealing with the relationship of the loop parameters to the expected performance. Measured data are also provided for two experimental amplifiers of this type. Both theory and experiment indicate that the technique offers distinct advantages for the intended application compared with multi-stage reflection amplifiers.","PeriodicalId":372159,"journal":{"name":"1975 5th European Microwave Conference","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132668559","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
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书