Pub Date : 1994-10-01DOI: 10.1109/EUMA.1994.337322
V. Boria, M. Baquero, M. Ferrando
This paper analyzes multireflector antennas making use of spectral domain techniques. The behaviour of the multireflector antenna is determined by means of a transference function that relates the plane wave spectrum of an incident signal on this antenna to the plane wave spectrum reflected by the structure. Multireflector antenna clusters that synthesize specific radiation patterns have also been undertaken. The paper allows us to generalize the identification of every reflecting object through a transference function that relates the incident spectrum to the reflected one. This will permit us to analyze reflection problems with multiple structures.
{"title":"Analysis of Multireflector Antenna Clusters by Spectral Methods","authors":"V. Boria, M. Baquero, M. Ferrando","doi":"10.1109/EUMA.1994.337322","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337322","url":null,"abstract":"This paper analyzes multireflector antennas making use of spectral domain techniques. The behaviour of the multireflector antenna is determined by means of a transference function that relates the plane wave spectrum of an incident signal on this antenna to the plane wave spectrum reflected by the structure. Multireflector antenna clusters that synthesize specific radiation patterns have also been undertaken. The paper allows us to generalize the identification of every reflecting object through a transference function that relates the incident spectrum to the reflected one. This will permit us to analyze reflection problems with multiple structures.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132470487","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 : 1994-10-01DOI: 10.1109/EUMA.1994.337362
J. Floc'h, L. Desclos
After several attemps on transverse dipole array design using numerical technique (MOM) a simple and reliable design method is derived. The method heart's is an intensive use of a database generated with a Moment Method. The basic topology is a series of transverse dipoles coupled electromagnetically to a microstrip line. Each array element is considered as an entity which is described as an equivalent circuit. This method allows a very simple interface with commercially available CAD softwares. As examples, two design of a six dipole linear array is presented. The first is a passive one showing a gain of 16 dB. The second one is the evolution of the first one as an active design showing 27.5 dB of gain at the center frequency of 10 GHz. In each of these designs, the method is shown realiable.
{"title":"New simplified Active transverse dipole array design","authors":"J. Floc'h, L. Desclos","doi":"10.1109/EUMA.1994.337362","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337362","url":null,"abstract":"After several attemps on transverse dipole array design using numerical technique (MOM) a simple and reliable design method is derived. The method heart's is an intensive use of a database generated with a Moment Method. The basic topology is a series of transverse dipoles coupled electromagnetically to a microstrip line. Each array element is considered as an entity which is described as an equivalent circuit. This method allows a very simple interface with commercially available CAD softwares. As examples, two design of a six dipole linear array is presented. The first is a passive one showing a gain of 16 dB. The second one is the evolution of the first one as an active design showing 27.5 dB of gain at the center frequency of 10 GHz. In each of these designs, the method is shown realiable.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133700160","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 : 1994-10-01DOI: 10.1109/EUMA.1994.337339
J. Mallat, A. Lehto, J. Tuovinen
The differential phase measurement method has been improved to need the use of only one power meter instead of three power meters. This enables accurate antenna phase pattern measurements with a simplified set-up, accompanied by the reduction in cost. All advantages of the differential phase measurement method are still also present, e.g. there is no need to phase lock oscillators or to use rotary joints. Measurement results for an antenna at 110 GHz are presented. A comparison t earlier data shows good agreement.
{"title":"Millimeter Wave Antenna Phase Pattern Measurement using the Differential Phase Method with Only One Power Meter","authors":"J. Mallat, A. Lehto, J. Tuovinen","doi":"10.1109/EUMA.1994.337339","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337339","url":null,"abstract":"The differential phase measurement method has been improved to need the use of only one power meter instead of three power meters. This enables accurate antenna phase pattern measurements with a simplified set-up, accompanied by the reduction in cost. All advantages of the differential phase measurement method are still also present, e.g. there is no need to phase lock oscillators or to use rotary joints. Measurement results for an antenna at 110 GHz are presented. A comparison t earlier data shows good agreement.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"320 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133933232","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 : 1994-10-01DOI: 10.1109/EUMA.1994.337328
J. Achkar
A new 18-40 GHz coaxial dual 6-port vector network analyzer has been built with 2.92 mm precision connectors at the output test ports. The design of the 6-port reflectometer, as well as the characterization of the power diode detectors and the modified-calibration of the dual 6-port are discussed. Experimental results on a sliding short at 22 GHz are reported.
{"title":"A New 18.40 GHz Dual 6-Port Vector Network Analyzer","authors":"J. Achkar","doi":"10.1109/EUMA.1994.337328","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337328","url":null,"abstract":"A new 18-40 GHz coaxial dual 6-port vector network analyzer has been built with 2.92 mm precision connectors at the output test ports. The design of the 6-port reflectometer, as well as the characterization of the power diode detectors and the modified-calibration of the dual 6-port are discussed. Experimental results on a sliding short at 22 GHz are reported.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132961212","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 : 1994-10-01DOI: 10.1109/EUMA.1994.337270
W. Schroeder, I. Wolff
It is shown that integral equation formulations for electromagnetic field problems which amount to compact operators (as found e.g. in boundary integral or spectral domain approaches) are incomplete problem specifications for purposes of numerical solution. They describe problems which are ill-posed in the sense of Hadamard. This difficulty becomes apparent after some implementation specific degree of problem complexity is reached. It is demonstrated that for electromagnetic field eigenvalue problems the consequence is a failure to detect any solution, except eventually spurious solutions if an inadequate discretization procedure is employed. It is concluded that integral equation formulations with compact operators must be accompanied by regularization conditions to yield a complete problem specification. Theoretical results are illustrated by numerical details from full-wave boundary integral equation analysis of a coplanar waveguide with conductors of finite thickness and finite conductivity.
{"title":"On the Incompleteness of Integral Equation Formulations for Electro-Magnetic Field Computations","authors":"W. Schroeder, I. Wolff","doi":"10.1109/EUMA.1994.337270","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337270","url":null,"abstract":"It is shown that integral equation formulations for electromagnetic field problems which amount to compact operators (as found e.g. in boundary integral or spectral domain approaches) are incomplete problem specifications for purposes of numerical solution. They describe problems which are ill-posed in the sense of Hadamard. This difficulty becomes apparent after some implementation specific degree of problem complexity is reached. It is demonstrated that for electromagnetic field eigenvalue problems the consequence is a failure to detect any solution, except eventually spurious solutions if an inadequate discretization procedure is employed. It is concluded that integral equation formulations with compact operators must be accompanied by regularization conditions to yield a complete problem specification. Theoretical results are illustrated by numerical details from full-wave boundary integral equation analysis of a coplanar waveguide with conductors of finite thickness and finite conductivity.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121487985","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 : 1994-10-01DOI: 10.1109/EUMA.1994.337413
Z. Fan, S. Pennock
The coplanar waveguide loaded inset dielectric guide is described in comparison with conventional coplanar waveguide, and analyzed using an integral equation method. This structure has several interesting features useful for microwave and millimeter wave applications. Numerical results are presented to illustrate the effects of various structural and material parameters on propagation constant and characteristic impedance. By suitable choice of these parameters, a wide single-mode bandwidth and a wide range of characteristic impedance can be achieved. Comparison between computed and measured data shows good agreement.
{"title":"Characteristics of Coplanar Waveguide Loaded Inset Dielectric Guide","authors":"Z. Fan, S. Pennock","doi":"10.1109/EUMA.1994.337413","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337413","url":null,"abstract":"The coplanar waveguide loaded inset dielectric guide is described in comparison with conventional coplanar waveguide, and analyzed using an integral equation method. This structure has several interesting features useful for microwave and millimeter wave applications. Numerical results are presented to illustrate the effects of various structural and material parameters on propagation constant and characteristic impedance. By suitable choice of these parameters, a wide single-mode bandwidth and a wide range of characteristic impedance can be achieved. Comparison between computed and measured data shows good agreement.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116227583","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 : 1994-10-01DOI: 10.1109/EUMA.1994.337249
I. Toyoda, T. Tokumitsu, K. Nishikawa
Miniature low-pass and hand-pass filters that use novel 4-port short-line meshes (SLM) stacked in a multilayer MMIC structure are proposed. The SLM is a periodic structure of very short TFMS lines. It acts as a point connection at low frequencies and as a growing frequency-dependent connection in higher frequency regions. This feature is effectively combined with inductors and capacitors to build a 4-GHz low-pass filter and a 8-GHz band-pass filter with various stop band characteristics on a 1.4 mm × 1.2mm chip.
提出了一种新型的4端口短线网格(SLM)堆叠在多层MMIC结构中的微型低通和手通滤波器。SLM是由非常短的TFMS线组成的周期性结构。它作为一个点连接在低频和作为一个越来越多的频率依赖连接在高频区域。该特性与电感和电容有效结合，在1.4 mm × 1.2mm芯片上构建具有各种阻带特性的4 ghz低通滤波器和8 ghz带通滤波器。
{"title":"A Multilayer MMIC Filter Using Short-Line Meshes (SLMs)","authors":"I. Toyoda, T. Tokumitsu, K. Nishikawa","doi":"10.1109/EUMA.1994.337249","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337249","url":null,"abstract":"Miniature low-pass and hand-pass filters that use novel 4-port short-line meshes (SLM) stacked in a multilayer MMIC structure are proposed. The SLM is a periodic structure of very short TFMS lines. It acts as a point connection at low frequencies and as a growing frequency-dependent connection in higher frequency regions. This feature is effectively combined with inductors and capacitors to build a 4-GHz low-pass filter and a 8-GHz band-pass filter with various stop band characteristics on a 1.4 mm × 1.2mm chip.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"298 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115663059","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 : 1994-10-01DOI: 10.1109/EUMA.1994.337333
A. H. Quoc, S. Tedjini
A new measurement procedure is developed for the determination of optoelectronic scattering parameters in fiber-optic devices working in microwave modulating frequency range. The measurement scheme is based on a microwave network analyzer and optoelectronic transducers to determiine the optical parameters by the use of corresponding electrical parameters. The application of the TMR (Through, Match, Reflect) calibration procedure for optical measurements is straightforward, which requires for the realization of the needed optical standards only commercially available elements. The error removal can be performed in a wide modulating frequency range both in transmission and reflection measurements. The validity of this measurement calibration procedure is demonstrated by some measurement examples.
{"title":"Measurement & Calibration Procedure for the Characterization of the Scattering Parameters in Microwave Fiber-Optic Devices","authors":"A. H. Quoc, S. Tedjini","doi":"10.1109/EUMA.1994.337333","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337333","url":null,"abstract":"A new measurement procedure is developed for the determination of optoelectronic scattering parameters in fiber-optic devices working in microwave modulating frequency range. The measurement scheme is based on a microwave network analyzer and optoelectronic transducers to determiine the optical parameters by the use of corresponding electrical parameters. The application of the TMR (Through, Match, Reflect) calibration procedure for optical measurements is straightforward, which requires for the realization of the needed optical standards only commercially available elements. The error removal can be performed in a wide modulating frequency range both in transmission and reflection measurements. The validity of this measurement calibration procedure is demonstrated by some measurement examples.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114754663","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 : 1994-10-01DOI: 10.1109/EUMA.1994.337344
J. Neve, Y. Pocchiola, J. Tasso
For antenna and payload tests on telecommunication satellite level, AEROSPATIALE has built in 1993 a Compact Antenna Test Range (CATR) facility in a large clean integration room. The AEROSPATIALE's CATR is currently used to support INTELSAT VII FM4 & FM5 Integration and Test subcontracted by SPACE SYSTEM/LORAL. The AEROSPATIALE's CATR has been manufactured by DASA (reflectors and feeds assembly), and HYFRAL (absorbers and shielding). SPACE SYSTEM/LORAL procedures and data processing softwares are being used. Including a presentation of AEROSPATIALE's CATR configuration, this paper describes the validated performances in Ku frequency band.
为了在电信卫星水平上进行天线和有效载荷测试，AEROSPATIALE于1993年在一个大型洁净综合室中建造了一个紧凑型天线试验场(CATR)设施。AEROSPATIALE公司的CATR目前用于支持由SPACE SYSTEM/LORAL分包的INTELSAT VII FM4和FM5集成和测试。AEROSPATIALE的CATR由DASA(反射器和馈源组件)和HYFRAL(吸收器和屏蔽)制造。正在使用空间系统/LORAL程序和数据处理软件。本文介绍了AEROSPATIALE的CATR配置，描述了在Ku频段的验证性能。
{"title":"Aerospatiale Compact Range Performance in Ku Band Aerospatiale Espace & Defense (Cannes Site)","authors":"J. Neve, Y. Pocchiola, J. Tasso","doi":"10.1109/EUMA.1994.337344","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337344","url":null,"abstract":"For antenna and payload tests on telecommunication satellite level, AEROSPATIALE has built in 1993 a Compact Antenna Test Range (CATR) facility in a large clean integration room. The AEROSPATIALE's CATR is currently used to support INTELSAT VII FM4 & FM5 Integration and Test subcontracted by SPACE SYSTEM/LORAL. The AEROSPATIALE's CATR has been manufactured by DASA (reflectors and feeds assembly), and HYFRAL (absorbers and shielding). SPACE SYSTEM/LORAL procedures and data processing softwares are being used. Including a presentation of AEROSPATIALE's CATR configuration, this paper describes the validated performances in Ku frequency band.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114760901","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 : 1994-10-01DOI: 10.1109/EUMA.1994.337243
P. Quéméneur, N. Caillère, F.R. Jourdrouin, S. Toutain
In order to measure accurately the instantaneous real speed on the sea, a low cost Doppler radar has been developed in the W-band. The main parts of the device are a Gunn diode oscillator and a Schottky diode mixer integrated on the same printed circuit, on either side of the emission and reception system including a conical horn with a Fresnel zone plate, excited by the dipole antennas of emission and reception. The Doppler signal, which is obtained after mixing, must be in the order of tens of kHz.
{"title":"A Low Cost W-Band Doppler Radar","authors":"P. Quéméneur, N. Caillère, F.R. Jourdrouin, S. Toutain","doi":"10.1109/EUMA.1994.337243","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337243","url":null,"abstract":"In order to measure accurately the instantaneous real speed on the sea, a low cost Doppler radar has been developed in the W-band. The main parts of the device are a Gunn diode oscillator and a Schottky diode mixer integrated on the same printed circuit, on either side of the emission and reception system including a conical horn with a Fresnel zone plate, excited by the dipole antennas of emission and reception. The Doppler signal, which is obtained after mixing, must be in the order of tens of kHz.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114870694","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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