Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333210
W. Keydel
{"title":"Microwave Technology, Science and Tool for Remote Sensing","authors":"W. Keydel","doi":"10.1109/EUMA.1983.333210","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333210","url":null,"abstract":"","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121519224","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}
Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333276
Zhou Zheng-ou, Ding Yi-Yuan, Gong Yao-huan, Huang Shun-ji
This paper describes noncontact measurements of the permittivity of a smooth convex target. Two methods are presented. The first one is developed by modifying Erteza and Doran's method[l]. The second one is measuring the reflection coefficient of the target and then evaluating the desired permittivity. Both methods are implemented in the open with a S-band bistatic radar. The experimental results are in good agreement with those obtained by the perturbation method.
{"title":"Noncontact Measurements of Permittivity of a Smooth Convex Target with bistatic Radar","authors":"Zhou Zheng-ou, Ding Yi-Yuan, Gong Yao-huan, Huang Shun-ji","doi":"10.1109/EUMA.1983.333276","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333276","url":null,"abstract":"This paper describes noncontact measurements of the permittivity of a smooth convex target. Two methods are presented. The first one is developed by modifying Erteza and Doran's method[l]. The second one is measuring the reflection coefficient of the target and then evaluating the desired permittivity. Both methods are implemented in the open with a S-band bistatic radar. The experimental results are in good agreement with those obtained by the perturbation method.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124955126","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}
Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333215
J. Collins
Over the past 30 years microwave technology has matured and grown with ever increasing civil and military systems applications and the industry is now enjoying for the first time an important status with the investment community. The 1980's will witness massive research and development funding in the microwave technology required to be deployed in major new operational systems of the late 1980's and 1990's, including large communication satellites, direct broadcast satellites, Navstar global positioning systems, phased-array and airborne multimode radars, electronic warfare and remote sensing systems. By the 1990's sophisticated computer-aided design and computer-aided manufacturing techniques will be employed by the microwave industry and operational frequencies to 200 GHz will be commonplace. Thereby, microwaves will move from its current batch production techniques to the mass production techniques now commonplace in the semiconductor industry and, in turn, this will require optimum use of the scarce skilled manpower resource.
{"title":"Microwaves in the 1990's","authors":"J. Collins","doi":"10.1109/EUMA.1983.333215","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333215","url":null,"abstract":"Over the past 30 years microwave technology has matured and grown with ever increasing civil and military systems applications and the industry is now enjoying for the first time an important status with the investment community. The 1980's will witness massive research and development funding in the microwave technology required to be deployed in major new operational systems of the late 1980's and 1990's, including large communication satellites, direct broadcast satellites, Navstar global positioning systems, phased-array and airborne multimode radars, electronic warfare and remote sensing systems. By the 1990's sophisticated computer-aided design and computer-aided manufacturing techniques will be employed by the microwave industry and operational frequencies to 200 GHz will be commonplace. Thereby, microwaves will move from its current batch production techniques to the mass production techniques now commonplace in the semiconductor industry and, in turn, this will require optimum use of the scarce skilled manpower resource.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128646810","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}
Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333232
E. Rammos
A new type of planar antenna using low loss Suspended Substrate Lines (S.S.L.) has been studied for 12 GHz satellite TV reception. The design and optimisation of the S.S.L. feed network and of the antenna element are presented. A 4 × 4 element planar array using this design is described giving better than 2:1 VSWR in the frequency range of 11-13 GHz. Its gain of about 22 dB from 11.6 to 12.6 GHz gives an antenna efficiency lying between 90% and 70% in the above mentioned bandwidth.
{"title":"A New Wideband, High Gain Suspended Substrate Line Planar Array for 12 GHz Satellite T.V.","authors":"E. Rammos","doi":"10.1109/EUMA.1983.333232","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333232","url":null,"abstract":"A new type of planar antenna using low loss Suspended Substrate Lines (S.S.L.) has been studied for 12 GHz satellite TV reception. The design and optimisation of the S.S.L. feed network and of the antenna element are presented. A 4 × 4 element planar array using this design is described giving better than 2:1 VSWR in the frequency range of 11-13 GHz. Its gain of about 22 dB from 11.6 to 12.6 GHz gives an antenna efficiency lying between 90% and 70% in the above mentioned bandwidth.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126161797","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}
Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333263
I. Lindell, M. Oksanen
A novel stationary functional is introduced for the analysis of open dielectric waveguides with transverse and/or longitudinal anisotropy. The functional is applicable to arbitrary dielectric and anisotropic profiles. As an example it is applied for two types of anisotropic optical fibers, one with anisotropic core and isotropic cladding and the other with both core and cladding anisotropic.
{"title":"Variational Method for Anisotropic Dielectric Waveguides","authors":"I. Lindell, M. Oksanen","doi":"10.1109/EUMA.1983.333263","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333263","url":null,"abstract":"A novel stationary functional is introduced for the analysis of open dielectric waveguides with transverse and/or longitudinal anisotropy. The functional is applicable to arbitrary dielectric and anisotropic profiles. As an example it is applied for two types of anisotropic optical fibers, one with anisotropic core and isotropic cladding and the other with both core and cladding anisotropic.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125238771","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}
Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333266
N. H. Sabhnani, B. G. Rao
Assuming a quasi-TEM mode of wave propagation and using Conformal Mapping Technique, simple, closed-form and accurate expressions have been arrived at for the Offset - Parallel Strip Transmission Line (abbrv. Offset-PSTL) in free space. A model has been proposed for evaluating the effective dielectric constant of the Offset-PSTL photo-etched on the dielectric sheet.
{"title":"Analysis of a Novel Offset Parallel Strip Transmission Line on a Dielectric Substrate","authors":"N. H. Sabhnani, B. G. Rao","doi":"10.1109/EUMA.1983.333266","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333266","url":null,"abstract":"Assuming a quasi-TEM mode of wave propagation and using Conformal Mapping Technique, simple, closed-form and accurate expressions have been arrived at for the Offset - Parallel Strip Transmission Line (abbrv. Offset-PSTL) in free space. A model has been proposed for evaluating the effective dielectric constant of the Offset-PSTL photo-etched on the dielectric sheet.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126450846","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}
Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333212
M. Bujatti
The most recent developments in GaAs MESFET's are reviewed and compared to the progress of other fast three-terminal devices potentially of interest for mm-wave applications. An attempt is made at predicting future performance by extrapolating the present trends.
{"title":"Technological Trends in GaAs MESFET's for Mm-Wave Applications","authors":"M. Bujatti","doi":"10.1109/EUMA.1983.333212","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333212","url":null,"abstract":"The most recent developments in GaAs MESFET's are reviewed and compared to the progress of other fast three-terminal devices potentially of interest for mm-wave applications. An attempt is made at predicting future performance by extrapolating the present trends.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117140989","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}
Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333190
M. Malkomes, H. Schmitt
The design and performance of a receiving 8-element microstrip antenna array for X-band operation is discussed. A new phase and amplitude control concept using electronically tunable antenna loads is presented which has been employed in the design of a planar phased array antenna with integrated control network.
{"title":"A New Amplitude and Phase Control Concept for Microstrip Phased Array Antennas","authors":"M. Malkomes, H. Schmitt","doi":"10.1109/EUMA.1983.333190","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333190","url":null,"abstract":"The design and performance of a receiving 8-element microstrip antenna array for X-band operation is discussed. A new phase and amplitude control concept using electronically tunable antenna loads is presented which has been employed in the design of a planar phased array antenna with integrated control network.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121956287","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}
Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333248
C. Snowden, M. Howes, D. Morgan
A method of accurately designing microwave FET oscillators using a two terminal large-signal characterisation technique is described. Measurements are used to characterise a one-port microwave oscillator circuit in terms of admittance, frequency and signal level, with the FET embedded in a feedback network. Device surfaces are used in the optimal design of low noise FET oscillators. The technique is applied to several microstrip MESFET oscillator circuits.
{"title":"Microwave FET Oscillator Design Based on Large-Signal Characterisation","authors":"C. Snowden, M. Howes, D. Morgan","doi":"10.1109/EUMA.1983.333248","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333248","url":null,"abstract":"A method of accurately designing microwave FET oscillators using a two terminal large-signal characterisation technique is described. Measurements are used to characterise a one-port microwave oscillator circuit in terms of admittance, frequency and signal level, with the FET embedded in a feedback network. Device surfaces are used in the optimal design of low noise FET oscillators. The technique is applied to several microstrip MESFET oscillator circuits.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114848583","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}
Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333245
M. Bester, K. Jacobs, B. Vowinkel
A new design for millimeter-wave Gunn oscillators has been developed, yielding a mechanical tuning range of about 15 GHz (70-85 GHz) and an output power up to 16 mW. The GaAs Gunn oscillator is tuned at the fundamental frequency (Q-band) in a crossed-waveguide resonator. In addition the output frequency of the Gunn oscillator is phase-locked by an active servo loop to an atomic clock.
{"title":"Phase-Locked Millimeter Wave Gunn Oscillators with Large Mechanical Tuning Range","authors":"M. Bester, K. Jacobs, B. Vowinkel","doi":"10.1109/EUMA.1983.333245","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333245","url":null,"abstract":"A new design for millimeter-wave Gunn oscillators has been developed, yielding a mechanical tuning range of about 15 GHz (70-85 GHz) and an output power up to 16 mW. The GaAs Gunn oscillator is tuned at the fundamental frequency (Q-band) in a crossed-waveguide resonator. In addition the output frequency of the Gunn oscillator is phase-locked by an active servo loop to an atomic clock.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121762426","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}
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