Pub Date : 1992-10-01DOI: 10.1109/EUMA.1992.335878
M. Vindevoghel, M. Hochedez, J. Legier
We present, in this article, some of the problems often encountered by the students when they start on a microwave course. We bring answers to these problems by means of Computer Assisted Learning and state in the conclusion our observations following an experiment of C.A.L. carried out at the University of Lille.
{"title":"How to Solve Your Pedagogical Problems in Microwaves","authors":"M. Vindevoghel, M. Hochedez, J. Legier","doi":"10.1109/EUMA.1992.335878","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335878","url":null,"abstract":"We present, in this article, some of the problems often encountered by the students when they start on a microwave course. We bring answers to these problems by means of Computer Assisted Learning and state in the conclusion our observations following an experiment of C.A.L. carried out at the University of Lille.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131856773","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 : 1992-10-01DOI: 10.1109/EUMA.1992.335810
M. Piloni, M. Brambilla
This paper describes a novel design of MESFET based frequency multipliers with automatically stabilized output power level. This particular circuit configuration beside generating the desired output harmonic, allows to stabilize the output power level without inserting any additive control and detector circuit. To detail and verify theoretical performances, electrical results obtained on a 12/24 GHz freq. doubler are given and commented.
{"title":"MESFET Frequency Multipliers Including Detectorless ALC","authors":"M. Piloni, M. Brambilla","doi":"10.1109/EUMA.1992.335810","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335810","url":null,"abstract":"This paper describes a novel design of MESFET based frequency multipliers with automatically stabilized output power level. This particular circuit configuration beside generating the desired output harmonic, allows to stabilize the output power level without inserting any additive control and detector circuit. To detail and verify theoretical performances, electrical results obtained on a 12/24 GHz freq. doubler are given and commented.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131978302","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 : 1992-10-01DOI: 10.1109/EUMA.1992.335861
T. Wakabayashi, T. Itoh
Laterally displaced microstrip lines which are coupled through a rectangular slot in a common ground plane are analyzed. Microstrips are displaced each other from the center of the slot. The analysis is based on the spectral domain method and the reciprocal theorem. Numerical results of the S parameters are shown for different values of displacement distance.
{"title":"Coupled Displaced Microstrip Lines Through a Rectangular Slot in a Common Ground Plane","authors":"T. Wakabayashi, T. Itoh","doi":"10.1109/EUMA.1992.335861","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335861","url":null,"abstract":"Laterally displaced microstrip lines which are coupled through a rectangular slot in a common ground plane are analyzed. Microstrips are displaced each other from the center of the slot. The analysis is based on the spectral domain method and the reciprocal theorem. Numerical results of the S parameters are shown for different values of displacement distance.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133774513","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 : 1992-10-01DOI: 10.1109/EUMA.1992.335781
J. Romeu, L. Jofre
Cylindrical Near to far field antenna transformation is expressed as a plane wave synthesis problem where a plane wave is produced by a cylindrical current distribution that encloses the Antenna Under Test (AUT). The current distribution that produces the plane wave is directly derived from the near to far field transformation algorithm.
{"title":"Truncation Errors in Cylindrical Near to Far Field Transform. A Plane Wave Synthesis Approach","authors":"J. Romeu, L. Jofre","doi":"10.1109/EUMA.1992.335781","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335781","url":null,"abstract":"Cylindrical Near to far field antenna transformation is expressed as a plane wave synthesis problem where a plane wave is produced by a cylindrical current distribution that encloses the Antenna Under Test (AUT). The current distribution that produces the plane wave is directly derived from the near to far field transformation algorithm.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133960249","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 : 1992-10-01DOI: 10.1109/EUMA.1992.335898
Zang ding, Hu Jiadong
A multiple-function instrument for medical treatment is described in this paper. A special type microstrip antenna is adopted. The radiations of micromave and laser beams are merged into a single direction to stimulate the acupuncture points of human body. These two kinds of radiations work in coordination with each other, so that the curative effect is notable. The instrument is composed of a He-Ne laser, a laser beam which is called "light needle", a microwave generator, and a ring type microstrip antenna which merges the microwave and laser energy into one. Since microwave-laser beam technique has no pain effect in clinical practice, it has some advantages over the traditional "silver needle". Therefore this kind of medical instrument is of practical values.
{"title":"A Microwave-Laser Instrument for Medical Treatment","authors":"Zang ding, Hu Jiadong","doi":"10.1109/EUMA.1992.335898","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335898","url":null,"abstract":"A multiple-function instrument for medical treatment is described in this paper. A special type microstrip antenna is adopted. The radiations of micromave and laser beams are merged into a single direction to stimulate the acupuncture points of human body. These two kinds of radiations work in coordination with each other, so that the curative effect is notable. The instrument is composed of a He-Ne laser, a laser beam which is called \"light needle\", a microwave generator, and a ring type microstrip antenna which merges the microwave and laser energy into one. Since microwave-laser beam technique has no pain effect in clinical practice, it has some advantages over the traditional \"silver needle\". Therefore this kind of medical instrument is of practical values.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"430 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122872394","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 : 1992-10-01DOI: 10.1109/EUMA.1992.335841
C. Lhiaubet, G. Cottard, J. Ciccotelli, J. Portala, J. Bolomey
This paper has two main-purposes. First of all, it presents recent technological developments of microwave linear sensors based on the Modulated Scattering Technique (MST). Secondly, it reports results of in-situ assessments conducted with such sensors on wood and paper materials. As a conclusion, the impact of the availability of such microwave multipoint sensors is analysed.
{"title":"On-Line Control in Wood and Paper Industries by means of Rapid Microwave Linear Sensors","authors":"C. Lhiaubet, G. Cottard, J. Ciccotelli, J. Portala, J. Bolomey","doi":"10.1109/EUMA.1992.335841","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335841","url":null,"abstract":"This paper has two main-purposes. First of all, it presents recent technological developments of microwave linear sensors based on the Modulated Scattering Technique (MST). Secondly, it reports results of in-situ assessments conducted with such sensors on wood and paper materials. As a conclusion, the impact of the availability of such microwave multipoint sensors is analysed.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124224533","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 : 1992-10-01DOI: 10.1109/EUMA.1992.335721
N. Keen
We review the physical phenomena associated with environmental measurements at millimeter and submillimeter wavelengths, and present some technical solutions.
我们回顾了与毫米波和亚毫米波环境测量相关的物理现象，并提出了一些技术解决方案。
{"title":"Environmental Measurements at Millimeter and Submillimeter Wavelengths","authors":"N. Keen","doi":"10.1109/EUMA.1992.335721","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335721","url":null,"abstract":"We review the physical phenomena associated with environmental measurements at millimeter and submillimeter wavelengths, and present some technical solutions.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"298 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129299884","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 : 1992-10-01DOI: 10.1109/EUMA.1992.335897
V. Ponomaryov, A. I. Gorb, O. A. Ksenofontov
The method of tropospheric refractive index height profile remote sensing by radiosignal integral Doppler frequency measurements and method of tropospheric statistical parameter height profile remote sensing by refractometry phase measurements were explored byf conducted experiments. Numerical analysis of remote sensing input data model and stable inverse algorithms was executed to choose optimal algorithm of tropospheric refractive index height profile restoration. The accuracy of the estimated statistical parameters was analised in terms of the statistical solutions theory. Restoration experimental results of refractive index height profile and structural constant height profile are cited.
{"title":"Tropospheric Remote Sensing by Radiodata","authors":"V. Ponomaryov, A. I. Gorb, O. A. Ksenofontov","doi":"10.1109/EUMA.1992.335897","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335897","url":null,"abstract":"The method of tropospheric refractive index height profile remote sensing by radiosignal integral Doppler frequency measurements and method of tropospheric statistical parameter height profile remote sensing by refractometry phase measurements were explored byf conducted experiments. Numerical analysis of remote sensing input data model and stable inverse algorithms was executed to choose optimal algorithm of tropospheric refractive index height profile restoration. The accuracy of the estimated statistical parameters was analised in terms of the statistical solutions theory. Restoration experimental results of refractive index height profile and structural constant height profile are cited.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128732426","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 : 1992-10-01DOI: 10.1109/EUMA.1992.335868
G. Leuzzi, K. Deiseroth, F. Giannini
Modern non-linear CAD techniques require accurate models of active components for the analysis of non-linear circuits. An improved technique of model extraction from measurements is presented, which accounts for capacitive parasitics in a more physical way. An improved equivalent circuit of the MESFET results. This technique is especially useful when modelling large power MESFET's.
{"title":"An Improved Method of Parasitic Extraction for Non-Linear Modelling of Microwave Power MESFET's","authors":"G. Leuzzi, K. Deiseroth, F. Giannini","doi":"10.1109/EUMA.1992.335868","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335868","url":null,"abstract":"Modern non-linear CAD techniques require accurate models of active components for the analysis of non-linear circuits. An improved technique of model extraction from measurements is presented, which accounts for capacitive parasitics in a more physical way. An improved equivalent circuit of the MESFET results. This technique is especially useful when modelling large power MESFET's.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115911782","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 : 1992-10-01DOI: 10.1109/EUMA.1992.335834
T. Weller, P. Katehi, W. Mcgrath
A novel design for non-contacting waveguide backshorts, suitable for applications into the Thz frequency range, is described in this paper. The new approach, which has been developed by the Jet Propulsion Laboratory (JPL), circumvents severe machining and mechanical strength difficulties related to the miniaturization of standard microwave backshort designs. The new design consists of a metal bar with rectangular or circular holes cut into it, which is covered with a dielectric (mylar) layer to form a snug fit with the broadwalls of a waveguide. A method of numerical analysis called the mode-matching/space domain integral equation (MMSDIE) technique is described herein, followed by a discussion of measured and theoretical results.
{"title":"A Non-Contacting Waveguide Backshort for Submillimeter Wave Applications","authors":"T. Weller, P. Katehi, W. Mcgrath","doi":"10.1109/EUMA.1992.335834","DOIUrl":"https://doi.org/10.1109/EUMA.1992.335834","url":null,"abstract":"A novel design for non-contacting waveguide backshorts, suitable for applications into the Thz frequency range, is described in this paper. The new approach, which has been developed by the Jet Propulsion Laboratory (JPL), circumvents severe machining and mechanical strength difficulties related to the miniaturization of standard microwave backshort designs. The new design consists of a metal bar with rectangular or circular holes cut into it, which is covered with a dielectric (mylar) layer to form a snug fit with the broadwalls of a waveguide. A method of numerical analysis called the mode-matching/space domain integral equation (MMSDIE) technique is described herein, followed by a discussion of measured and theoretical results.","PeriodicalId":317106,"journal":{"name":"1992 22nd European Microwave Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116842816","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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