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1979 9th European Microwave Conference最新文献

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Noise in Mutually Coupled Oscillators 互耦振荡器中的噪声
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332641
K. Schunemann, R. Knochel, J. Kalinski
{"title":"Noise in Mutually Coupled Oscillators","authors":"K. Schunemann, R. Knochel, J. Kalinski","doi":"10.1109/EUMA.1979.332641","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332641","url":null,"abstract":"A general noise theory for microwave oscillators, which is based upon the describing function method, is developed and applied to the cases of mutually coupled and multiple-device oscillators. Explicit expressions are derived for the output power, the FM-and the AM-noise. Both theoretical and experimental results are given concerning the dependence of the output noise on the number of active devices and on the parameters of the coupling network.","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"243 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127315662","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
2 GHZ MIC Front End Designed for a Microwave Radio Relay Link 为微波无线电中继链路设计的2ghz MIC前端
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332650
K. Otremba
{"title":"2 GHZ MIC Front End Designed for a Microwave Radio Relay Link","authors":"K. Otremba","doi":"10.1109/EUMA.1979.332650","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332650","url":null,"abstract":"A low-noise 2 GHz front end has been developed, consisting of MIC isolator, RF preamplifier, SSB downconverter and conventional IF preamplifier. An overall 3 dB SSB noise figure and 12 % RF bandwidth has been achieved. The RF preamplifier, using a bipolar transistor, exhibits a noise figure of 2.2 dB and has about 15 dB gain. No filter network between RF preamplifier and mixer is needed because a novel single sideband downconverter circuit with 6 dB SSB noise figure is used.","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126609991","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
Interactive Computer Technique for the Design of Solid State Microwave Oscillators 固态微波振荡器设计的交互式计算机技术
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332766
R. Pollard, M. Howes
{"title":"Interactive Computer Technique for the Design of Solid State Microwave Oscillators","authors":"R. Pollard, M. Howes","doi":"10.1109/EUMA.1979.332766","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332766","url":null,"abstract":"The full characterisation of the admittance of a two-terminal negative resistance device as a function of r.f. amplitude and frequency is used as the basis for an interactive oscillator design technique. Employing a display of the device characteristics - the \"device surface\" - and the prototype microwave circuit, the designer can study the device-circuit interaction and select an operating point. The technique also permits the examination of the tuning properties and determination of the noise properties of a device-circuit combination.","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126190891","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
A Circularly Polarized Traveling-Wave Chain Antenna 圆极化行波链天线
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332695
J. Henriksson, K. Markus, M. Tiuri
{"title":"A Circularly Polarized Traveling-Wave Chain Antenna","authors":"J. Henriksson, K. Markus, M. Tiuri","doi":"10.1109/EUMA.1979.332695","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332695","url":null,"abstract":"A novel traveling-wave antenna array with bent conductors as elements can give circularly polarized radiation. An expression for the far-field has been derived, from which the lengths and bending angle of the conductors can be calculated for circular polarization. A useful application would be printed circuit microwave antenna for different purposes. Antennas have been made and work well over reasonable large bandwidths. They can also function on their broadside frequency.","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122197493","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
Recent Advances in Beam Lead Diode Mixers for Millimeter Systems Applications 毫米波导联二极管混频器的最新进展
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332749
A. Cardiasmenos
{"title":"Recent Advances in Beam Lead Diode Mixers for Millimeter Systems Applications","authors":"A. Cardiasmenos","doi":"10.1109/EUMA.1979.332749","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332749","url":null,"abstract":"This paper describes ongoing development of suspended strip1ine mixers at 30, 35, 40-50, 60, 94 and 140 GHz. These mixers, exhibiting the lowest commercially available noise figures, have been designed specifically for millimeter wave systems requirements. They utilize advanced beam lead diode technology, making possible cost-effective and reliable receiver components for use at millimeter wavelengths. 4.5 dB DSB noise figure including the IF contribution has been achieved in production mixer-preamplifiers at 94 GHz using beam lead suspended strip line technology. A survey of units already in the field and a forecast to future possible potential and capabilities for this class of devices will be explored.","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128458156","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
The Hi-OVIS Optical Communication System Hi-OVIS光通信系统
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332680
M. Kawahata
{"title":"The Hi-OVIS Optical Communication System","authors":"M. Kawahata","doi":"10.1109/EUMA.1979.332680","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332680","url":null,"abstract":"","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131674170","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
Analysisof Six-Portmeasurement Resolution by Conformal Mapping 保角映射法分析六端口测量分辨率
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332662
R. Speciale
{"title":"Analysisof Six-Portmeasurement Resolution by Conformal Mapping","authors":"R. Speciale","doi":"10.1109/EUMA.1979.332662","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332662","url":null,"abstract":"Microwave measurement systems based on the six-port principle fully reconstruct complex wave-vector ratios from sets of redundant magnitude-only readings. This leads to determining the representative points in the complex plane of the vector-ratios as intersections of three or more circles. A simple conformal mapping may be used to visualize the resolution of this method and its sensitivity to errors in the magnitude readings. This mapping transforms families of constant-magnitude-ratio circles in straight parallel lines. The coordinates in the transformed plane are the measured magnitude ratio in dB and the angle between the tangents to the intersecting circles at the intersection points. An example of computer-generated mapping representing a typical location of the q-points is presented and discussed.","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132207485","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
Analysis and Design of Triplate Corporate Feeds at High Frequencies 高频三极板共用馈源分析与设计
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332682
P. Hall, J. James
{"title":"Analysis and Design of Triplate Corporate Feeds at High Frequencies","authors":"P. Hall, J. James","doi":"10.1109/EUMA.1979.332682","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332682","url":null,"abstract":"The analysis and design of an integrated triplate corporate feed for a microstrip antenna array has been examined. A mode matching technique is used to calculate the reactive behaviour of each junction and taper in the feed and the results are compared to those obtained using static approximations. The spurious radiation generated at the triplate to microstrip interface is also estimated and methods of reduction are considered. The measured phase and amplitude characteristics at 17GHz, of feeds manufactured using computer graphic production incorporating the phase corrections obtained from the mode matching method are given. The limiting performance levels due to manufacturing tolerances, spurious mode generation and radiation loss are estimated.","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132267527","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 Novel MIC Slot-Line Antenna 一种新型MIC槽线天线
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332685
S. Prasad, S. Mahapatra
{"title":"A Novel MIC Slot-Line Antenna","authors":"S. Prasad, S. Mahapatra","doi":"10.1109/EUMA.1979.332685","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332685","url":null,"abstract":"A new Microwave Integrated Circuit (MIC) slot-line antenna has been developed. This is intended for application in short range radar and phased array systems. The new antenna can replace the conventional MIC dipole and resonator antennas with its distinct advantages of a sharper beam for the same order of gain. The antenna is light, compact, easily reproducible and could be integrated with rest of the MIC circuitry. The antenna operates in the X-band with a gain of 6 dB and a side lobe level of 10 dB. The radiation characteristics of the antenna are controllable.","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130005965","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: 54
A Reliability Study of Power GaAs FETs 功率GaAs场效应管的可靠性研究
1979 9th European Microwave Conference Pub Date : 1979-10-01 DOI: 10.1109/EUMA.1979.332713
I. Drukier, J. Silcox
{"title":"A Reliability Study of Power GaAs FETs","authors":"I. Drukier, J. Silcox","doi":"10.1109/EUMA.1979.332713","DOIUrl":"https://doi.org/10.1109/EUMA.1979.332713","url":null,"abstract":"Accelerated life tests on power GaAs FETs have shown these devices to be reliable components. At an operating temperature of 125°C a MTTF of 4 × 106 hours is predicted. The activation energy of this process is 1.8eV. Failures are related to the gate.","PeriodicalId":128931,"journal":{"name":"1979 9th European Microwave Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1979-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134465671","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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