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1978 8th European Microwave Conference最新文献

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Mode Conversion in Oblique Bragg Gratings for Integrated Optics 集成光学斜布拉格光栅的模式转换
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332627
N. Gremillet, G. Thomin, J. Marcou
{"title":"Mode Conversion in Oblique Bragg Gratings for Integrated Optics","authors":"N. Gremillet, G. Thomin, J. Marcou","doi":"10.1109/EUMA.1978.332627","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332627","url":null,"abstract":"High density component integration in guided optics needs reflecting devices. A holographic grating on the guide acting under Bragg conditions deviate the guided light. This reflexinn causes polarization changes so that a T.E. incident wave will give some T.M. reflected wave. Devices of this type have been experimentally studied with special attention to mode conversion efficacity. Theorical study is also reported in a two dimensional calculation. Vectorial normalization conditions in the unperturbed case are derived from Maxwell's equations. Coupled mode treatment of the perturbed propagation is given explaining main experimental results.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"10 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":"125321675","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
Utilisation of Microwave Bands for Digital Radio-Relay Systems 微波波段在数字无线电中继系统中的应用
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332630
R. S. Swain
{"title":"Utilisation of Microwave Bands for Digital Radio-Relay Systems","authors":"R. S. Swain","doi":"10.1109/EUMA.1978.332630","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332630","url":null,"abstract":"This paper discusses the influence that some geographical, national and system constraints can have on the utilisation of microwave frequency bands for the digital transmission of public communications by radio. Consideration is given to the digitalisation of the analogue networks currently occupying bands between 1 and 12 GHz, the further use of bands in the range 12 to 40 GHz, and the possible exploitation of frequency bands above 40 GHz.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"16 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":"122303674","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 Performance of a 2 to 18 GHz Medium Power Ga As Mesfet Amplifier 一种2 ~ 18 GHz中功率砷化镓介面效应放大器的设计与性能
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332547
G. Basawapatna
{"title":"Design and Performance of a 2 to 18 GHz Medium Power Ga As Mesfet Amplifier","authors":"G. Basawapatna","doi":"10.1109/EUMA.1978.332547","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332547","url":null,"abstract":"This paper discusses the design and performance of a multi-stage wideband GaAs MESFET amplifier. The amplifier had a small signal gain of 12 to 20 dB in the frequency range of 2 to 18 GHz. The l-dB gain-compression point of the amplifier was 13 dBm and the saturated power output exceeded 16 dBm. The wideband matching techniques used and the trade-offs involved are discussed. Also discussed are the device parameters and their relationships to the performance of the amplifier.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"248 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":"125531487","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
Active X-Band Phased Array Modulesand their Phase Stability 有源x波段相控阵模块及其相位稳定性
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332526
H. Steyskal
{"title":"Active X-Band Phased Array Modulesand their Phase Stability","authors":"H. Steyskal","doi":"10.1109/EUMA.1978.332526","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332526","url":null,"abstract":"Two identical MIC-transmit-receive units wlih 1 W CW output each were. forming a twin module. GaAs IMPATT diode power amplifiers and ferrite phase shifters were used. This type of components produced phase tracking of about 0.8 phase degrees/°C in CW operation, thereby setting limits for uncontrolled temperature differences in larger arrays. With 3 m us pulses, an intra-pulse phase variation of less tan 10 degrees was measured. Improvements concerning phase stability and efficiency are expected by the use of GaAs FETs and temperature compesated ferrites or replacement of ferrites by nonferrite components.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"25 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":"126510204","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
Commensurate Stripline Bandpass Filters with Equalized Group Delay Characteristics 具有均衡群延迟特性的相称带状带通滤波器
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332507
V. Tulaja
{"title":"Commensurate Stripline Bandpass Filters with Equalized Group Delay Characteristics","authors":"V. Tulaja","doi":"10.1109/EUMA.1978.332507","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332507","url":null,"abstract":"A new structure for realization of commensurate TEM bandpass filters having equalized group delay in the passband has been developed and successfully tested. Two layers carrying the same short-shunt-stub structure are coupled over a dielectric interface. For the symmetrical case, the synthesis is described and the results obtained with trial filters are discussed.","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":"128877509","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
The Power Method: A Technique for Guiding Structure Analysis and an Approach to Microwave Circuit Synthesis 功率法:一种指导结构分析和微波电路合成的方法
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332542
A. Mohsen
{"title":"The Power Method: A Technique for Guiding Structure Analysis and an Approach to Microwave Circuit Synthesis","authors":"A. Mohsen","doi":"10.1109/EUMA.1978.332542","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332542","url":null,"abstract":"The matrix eigenvalue problem resulting from the finite-difference analysis of waveguides is treated using the power method. The method does not require prior estimate of the eigenvalue and demands minimum computer storage. The rapidity of convergence is demonstrated and methods to accelerate the convergence are presented. The advantages of the method compared to direct and other iterative approaches are discussed. The reduction of some design criterion to forms which can be treated by the method is also 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":"129367901","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
Microwave FET's - What's Next? 微波场效应管——下一步是什么?
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332511
C. Liechti
{"title":"Microwave FET's - What's Next?","authors":"C. Liechti","doi":"10.1109/EUMA.1978.332511","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332511","url":null,"abstract":"Over the last decade, GaAs FET's have made dramatic advances in low-noise and efficient power amplification. These advances are highlighted and possible pathways for future developments are shown. Looking further ahead, it is important to realize that GaAs technology holds the key to microwave monolithic-integrated circuits.** \"Where are GaAs IC's today, and where do we go from here?\" These and related questions are briefly covered in this paper.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"35 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":"132820845","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
Gunn Effect Diodes for Millimeter Wavelengths 用于毫米波长的冈恩效应二极管
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332634
P. Gibeau, J. Lacombe
{"title":"Gunn Effect Diodes for Millimeter Wavelengths","authors":"P. Gibeau, J. Lacombe","doi":"10.1109/EUMA.1978.332634","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332634","url":null,"abstract":"","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"47 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":"133933249","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
Microstrips for Microwave Circuits Made by ION Plating 离子镀微波微带
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332575
B. Raicu, G. Dinca
{"title":"Microstrips for Microwave Circuits Made by ION Plating","authors":"B. Raicu, G. Dinca","doi":"10.1109/EUMA.1978.332575","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332575","url":null,"abstract":"","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":"129932137","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
An 18 Channel, Phase-Matched, Single-Conversion Upconverter from 30MHz to L-Band 一个18通道，相位匹配，从30MHz到l波段的单转换上变频器
1978 8th European Microwave Conference Pub Date : 1978-10-01 DOI: 10.1109/EUMA.1978.332529
A.A. Goaaher
{"title":"An 18 Channel, Phase-Matched, Single-Conversion Upconverter from 30MHz to L-Band","authors":"A.A. Goaaher","doi":"10.1109/EUMA.1978.332529","DOIUrl":"https://doi.org/10.1109/EUMA.1978.332529","url":null,"abstract":"An 18 channel, phase-matched Upconverter has been developed by Marconi Space and Defence Systems Ltd. The Upconverter translates the 18 separate IF signals from 30MHz to L-Band while maintaining the channel phase and amplitude relationships. To ease phase tracking problems a sub-harmonically pumped mixer is used. This provides an effective LO rejection greater than 50dB and thus enables a single conversion to be used without high-order filtering. The applications and limitations of sub-harmonically pumped mixing schemes applied to upconverters are discussed.","PeriodicalId":429268,"journal":{"name":"1978 8th European Microwave Conference","volume":"19 23-24 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":"133283275","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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