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1978 8th European Microwave Conference最新文献

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All FET Front-End for 12 GHz Satellite Broadcasting Reception 所有FET前端用于12 GHz卫星广播接收
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332617
R. Dessert, P. Harrop, B. Kramer, T. Vlek
{"title":"All FET Front-End for 12 GHz Satellite Broadcasting Reception","authors":"R. Dessert, P. Harrop, B. Kramer, T. Vlek","doi":"10.1109/EUMA.1978.332617","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332617","url":null,"abstract":"A 12 GHz receiver front-end has been designed and realised which uses field-effect transistors for each of the three major functions of r.f. preamplifier, mixer and local oscillator. In each of these functions, the FET presents its particular advantages of low noise figure as an amplifier, a conversion gain as a mixer and a relatively high efficiency as an oscillator. An overall noise figure of 4 dB should be possible in production quantities. The structure and overall system performance will be described.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130121796","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
The Reflective Dot Array -- A New Technique for High Performance Signal Processing 反射点阵列——一种高性能信号处理新技术
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332605
L. Solie
{"title":"The Reflective Dot Array -- A New Technique for High Performance Signal Processing","authors":"L. Solie","doi":"10.1109/EUMA.1978.332605","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332605","url":null,"abstract":"High performance signal processing devices using reflective array (etched groove) devices have been made. These have been used as pulse compression filters in radar systems and more recently as the critical components in a SAW implementation of the chirp transform algorithm. A lower cost alternative to the etched groove technique, called the reflective dot array (RDA), is presented in which the etched grooves are replaced by rows of metallic or etched dots. The RDA technique has been applied to bandpass filters, linear FM expansion and compression filters, and PN code correlation. Experimental results from these devices are presented.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130702612","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
Waveforms and Saturation in GaAs Power MESFETs GaAs功率mesfet的波形和饱和
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332550
F. Sechi, H. Huang, B. Perlman
{"title":"Waveforms and Saturation in GaAs Power MESFETs","authors":"F. Sechi, H. Huang, B. Perlman","doi":"10.1109/EUMA.1978.332550","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332550","url":null,"abstract":"Measurements of voltage and current waveforms in power MESFETs have shown that voltage breakdown of the Schottky barrier is responsible for power saturation and consequent nonlinearity of MESFET amplifiers. Also, high peak drain-gate voltages affect device reliability and noise in FET oscillators.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133473637","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
Microwave Field Influence on Some Chemical and Biological Objects 微波场对某些化学和生物物体的影响
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332514
A. I. Tereshchenko
{"title":"Microwave Field Influence on Some Chemical and Biological Objects","authors":"A. I. Tereshchenko","doi":"10.1109/EUMA.1978.332514","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332514","url":null,"abstract":"The investigation of the microwave field influence on substance has reached such a level when it is possible to make an attempt of the definite generalisation of some questions on the basis of particular results.Among these questions are the defrostation of biological objects and the technological treatment of chemical substances connected with their heating.The increase of efficiency of such processes calls for creation of the maximum homogenous electromagnetic field in the applicator.The task considerably complicates if the treated objects themselves have electric and thermal properties which are unequal in volume and changing in the process of treatment.The general analyses is illustrated by the examples of the solution of appearing difficulties through the utilisation of heat conductivity phenomenon,combined effect of the microwave field and presaure,and also by the processes where unhomogeneity of substance properties acts as a positive factor.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115375387","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 Limitations and Experimental Results of High Power CW PPM-Focused TWT's from 30 to 50 GHz 30 ~ 50 GHz高功率连续波分频聚焦行波管的设计限制与实验结果
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332626
H. Seunik, F. Gross, F. Weinzierl
{"title":"Design Limitations and Experimental Results of High Power CW PPM-Focused TWT's from 30 to 50 GHz","authors":"H. Seunik, F. Gross, F. Weinzierl","doi":"10.1109/EUMA.1978.332626","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332626","url":null,"abstract":"For mobile millimeter wave satellite communications terminals two types of TWT have been developed: A Ka band tube with an output power exceeding 1 kW in the band 36.7 to 38.2 GHz (1) and a Q band (40 to 50 GHz) TWT with an output power of more than 400 W (2). Additionally a 30 GHz 1 kW TWT is presently being developed under contract to the German Space Administration.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114710253","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
vsb-RADAR - A 35 GHz Doppler Radar For Velocity Distance And Acceleration Measurements On Railbound Vehicles vsb-RADAR是一种35ghz多普勒雷达，用于轨道车辆的速度、距离和加速度测量
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332602
Bertram Keller, H. Meinel, B. Rembold
{"title":"vsb-RADAR - A 35 GHz Doppler Radar For Velocity Distance And Acceleration Measurements On Railbound Vehicles","authors":"Bertram Keller, H. Meinel, B. Rembold","doi":"10.1109/EUMA.1978.332602","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332602","url":null,"abstract":"Certain problems associated with conventional vehicular speed sensing such as wheel slip or wheel lock can be avoided by employing a microwave sensing technique. A 35 GHz doppler-radar has been developed to measure velocity, distance and acceleration of railbound vehicles. This radar, the vsb-RADAR, employs a Gunn-Device, a wave-guide slot antenna and a digital signal processor to provide the measuring data. Because of the small dimensions of the entire microwave unit, (86 × 456 × 114) mm, the radar can be directly mounted to the locomotive bogie. In 1975 the system was developed and since then has been under continuing tests at the \"Deutsche Bundesbahn\" (DB), the German Federal Railway. Concerning distance measurements an accuracy of 0.1% standard deviation has been achieved. Velocity and acceleration is measured with an accuracy of 1 %. These data hold for the velocity range of 20 to 250 km/h.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116914813","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
Posibilities and Limitations of SAW Signal Processing Devices : SAW Hadamard Transformer 声表面波信号处理装置的可能性与局限性:声表面波阿达玛变压器
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332608
J. Rebourg
{"title":"Posibilities and Limitations of SAW Signal Processing Devices : SAW Hadamard Transformer","authors":"J. Rebourg","doi":"10.1109/EUMA.1978.332608","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332608","url":null,"abstract":"SAW transversal filters are very interesting devices in signal processing. We shall check the limitations of a class of such devices: SAW tapped delay lines and give solutions when possible to avoid or compensate for those limitations. Fran this we shall see the possible solutions for performuing linear transformations using SAW devices and give the results obtained with SAW Hadamard transformers, Hadarnard transform being of great interest in picture transmission.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117150113","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
Processing Requirements for Mass Production of Microwave Hybrid Integrated Circuits 微波混合集成电路量产的工艺要求
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332577
M. Fache, J. Joly
{"title":"Processing Requirements for Mass Production of Microwave Hybrid Integrated Circuits","authors":"M. Fache, J. Joly","doi":"10.1109/EUMA.1978.332577","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332577","url":null,"abstract":"The works undertaken by L.T.T. to master the different operations for low cost and mass production of MIC (in TO 8 package) components are described. A certain number of devices representative of the whole of microwave components one can realize in MIC technology were selected. They were used both for a comparative study of the explored technologies (from both technical and economical points of view) and for systematic reliability and reproductibility tests. The most performing technologies will be described in detail.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"150 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124612297","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
Optimum Computer-Aided Design of Hyperabrupt Varactors 超突变变容管的计算机辅助优化设计
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332555
N. Saleh, M. Sheira, W. Anees
{"title":"Optimum Computer-Aided Design of Hyperabrupt Varactors","authors":"N. Saleh, M. Sheira, W. Anees","doi":"10.1109/EUMA.1978.332555","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332555","url":null,"abstract":"This paper presents design computations of the optimum doping profiles that maximise each of the following electrical parameters: Q, VBD and (CR)m of hyperabrupt varactors. Optimum design computations are also carried out for the generalized problem when Q, VBD and (CR)m are considered with equal or unequal weights. A digital simulation of the device characteristics using the computed optimum process parameters is then carried out to verify the optimum solutions and to investigate the sensitivity of the electrical parameters to variations in the technological parameters. The results obtained from the present work represent an important improvement in the device characteristics when compared to the present state of art.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128352476","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
Time-Domain Spectrometry of High Frequency Transistors Measured under Transient Bias Conditions 瞬态偏置条件下高频晶体管的时域光谱测量
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332552
R. Hawkins
{"title":"Time-Domain Spectrometry of High Frequency Transistors Measured under Transient Bias Conditions","authors":"R. Hawkins","doi":"10.1109/EUMA.1978.332552","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332552","url":null,"abstract":"Time-Domain Spectrometry has been used to measure S-parameters of high frequency power transistors, bipolar and MOS, under pulsed bias conditions to reduce the mean dissipation and hence the rise in temperature of the active device. For the bipolar transistors, |S2l| shows a much slower decrease at high currents than conventional measurements made under steady bias. In the case of the MOS device, |S2l| approaches a constant value at high currents showing that the fall in magnitude normally observed is due entirely to the increase in device temperature. It is suggested that this method can be applied to measurements under other transient conditions provided that the system response does not change within the sampling window of 10 ns.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132333688","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
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