Pub Date : 1994-10-01DOI: 10.1109/EUMA.1994.337250
D. Kinowski, M. Guglielmi
Angular bandpass filters find application in advanced antenna feed systems for space applications as diplexers or as devices to reduce the effects of unwanted grating lobes. In this paper a new approach for the design of angular bandpass filters composed of cascaded metal-strip gratings is proposed. Contrary to the conventional "diffraction" approach where the resonating element is the grating itself, in the new approach the basic resonator is composed of two cascaded gratings. The distance between the two gratings represents the length of the resonator while the inter-resonator coupling can be adjusted by varying the widths of the metal strips. This alternative approach, called the "guided" approach, does not add significant complication to the structure but greatly enhances its electrical performances. It will be shown in fact that, following the approach we propose, the frequency behavior of the filter can be completely decoupled from its angular behavior in the design process thereby considerably increasing the design freedom.
{"title":"Synthesis of Angular Bandpass Filters","authors":"D. Kinowski, M. Guglielmi","doi":"10.1109/EUMA.1994.337250","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337250","url":null,"abstract":"Angular bandpass filters find application in advanced antenna feed systems for space applications as diplexers or as devices to reduce the effects of unwanted grating lobes. In this paper a new approach for the design of angular bandpass filters composed of cascaded metal-strip gratings is proposed. Contrary to the conventional \"diffraction\" approach where the resonating element is the grating itself, in the new approach the basic resonator is composed of two cascaded gratings. The distance between the two gratings represents the length of the resonator while the inter-resonator coupling can be adjusted by varying the widths of the metal strips. This alternative approach, called the \"guided\" approach, does not add significant complication to the structure but greatly enhances its electrical performances. It will be shown in fact that, following the approach we propose, the frequency behavior of the filter can be completely decoupled from its angular behavior in the design process thereby considerably increasing the design freedom.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"10 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":"131279069","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.1994.337440
C. Pinatel, S. Vuye, A. Konczykowska, H. Wang
Different HBTs operating classes have been compared using a simulated multiharmonic load-pull type optimization taking into account the supply voltage criteria. The optimum operating class taking into account the power density and the thermal effect has been discussed. The low bias voltage operation of HBT has been investigated. An HBT amplifier has been designed and fabricated for DCS1800. 1 W output power with a power-added efficiency df 50% has been measured.
{"title":"High power efficiency AlGaAs-GaAs HBT for mobile communications","authors":"C. Pinatel, S. Vuye, A. Konczykowska, H. Wang","doi":"10.1109/EUMA.1994.337440","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337440","url":null,"abstract":"Different HBTs operating classes have been compared using a simulated multiharmonic load-pull type optimization taking into account the supply voltage criteria. The optimum operating class taking into account the power density and the thermal effect has been discussed. The low bias voltage operation of HBT has been investigated. An HBT amplifier has been designed and fabricated for DCS1800. 1 W output power with a power-added efficiency df 50% has been measured.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"69 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":"121875838","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.1994.337476
D. Sánchez-Hernández, I. Robertson
This paper presents a 60 GHz-band active microstrip patch antema using a Gunn diode as an oscillator in a reflection amplifier configuration. The oscillator consists of a patch antenna, the matching and bias circuit and an Alpha Industries DGB8266 packaged Gunn diode. 9.26 mW are obtained at 63.24 GHz. A tuning bandwidth of 1 GHz is attained by varying the dc bias voltage. The radiation pattems agree well with the theory and low level cross-polarisation patterns are achieved over a broad bandwidth. The 60 GHz-band is particularly important for micro-cellular mobile communications, and this active antenna is ideally suited for base-station applications in the 62.5/63.5 GHz bands intended for the European Mobile Broadband System (MBS).
{"title":"60 GHz-Band Active Patch Antenna for Spatial Power Combining Arrays in European Mobile Communication Systems","authors":"D. Sánchez-Hernández, I. Robertson","doi":"10.1109/EUMA.1994.337476","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337476","url":null,"abstract":"This paper presents a 60 GHz-band active microstrip patch antema using a Gunn diode as an oscillator in a reflection amplifier configuration. The oscillator consists of a patch antenna, the matching and bias circuit and an Alpha Industries DGB8266 packaged Gunn diode. 9.26 mW are obtained at 63.24 GHz. A tuning bandwidth of 1 GHz is attained by varying the dc bias voltage. The radiation pattems agree well with the theory and low level cross-polarisation patterns are achieved over a broad bandwidth. The 60 GHz-band is particularly important for micro-cellular mobile communications, and this active antenna is ideally suited for base-station applications in the 62.5/63.5 GHz bands intended for the European Mobile Broadband System (MBS).","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"875 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":"128128914","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.1994.337417
P. Febvre, W. Mcgrath, B. Bumble, H. Leduc, S. George, G. Ruffié, G. Beaudin
Heterodyne receivers using SIS (Superconductor-Insulator-Superconductor) junctions are the most sensitive receivers for radioastronomy in the millimeter wave and submillimeter wave frequency range. These instruments use superconducting RF tuning circuits to resonate out the high shunt capacitance of the SIS junction in order to provide a good impedance match with the microwave envionment at the frequency of operation. An accurate model to determine the electrical propeties of impedance matching circuits has been developed. An analysis of superconducting microstrip lines and radial stubs taking into account the fringing fields of the thick electrode, the step discontinuities, and the Mattis-Bardeen complex conductivity for the superconductor surface impedance is presented. This model is used to calculate the resonance frequencies of the matching circuit with the capacitively-'shunted SIS junction. Good agreement is found between calculated and experimentally measured resonance frequencies at 550-600 GHz.
{"title":"Superconducting RF tuning circuits for low-noise submillimeter wave SIS receivers","authors":"P. Febvre, W. Mcgrath, B. Bumble, H. Leduc, S. George, G. Ruffié, G. Beaudin","doi":"10.1109/EUMA.1994.337417","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337417","url":null,"abstract":"Heterodyne receivers using SIS (Superconductor-Insulator-Superconductor) junctions are the most sensitive receivers for radioastronomy in the millimeter wave and submillimeter wave frequency range. These instruments use superconducting RF tuning circuits to resonate out the high shunt capacitance of the SIS junction in order to provide a good impedance match with the microwave envionment at the frequency of operation. An accurate model to determine the electrical propeties of impedance matching circuits has been developed. An analysis of superconducting microstrip lines and radial stubs taking into account the fringing fields of the thick electrode, the step discontinuities, and the Mattis-Bardeen complex conductivity for the superconductor surface impedance is presented. This model is used to calculate the resonance frequencies of the matching circuit with the capacitively-'shunted SIS junction. Good agreement is found between calculated and experimentally measured resonance frequencies at 550-600 GHz.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"382 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":"132909093","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.1994.337268
S. Lucyszyn, I. Robertson, A. Aghvami
A precision millimetre-wave analogue phase shifter and a miniature Ku-band cascode FET amplifier are presented. Both MMICs are realised using uniplanar technology. The phase shifter employs a blend of coplanar waveguide and multilayer techniques. It has a worst-case rms phase error of only ± 1.0°, for all levels of relative phase shift up to 120°, across the 31 to 32 GHz frequency range. The amplifier is realised using a combination of coplanar waveguide, meandered 'thin-film' microstrip, and lumped elements. The amplifier has an active area of only 0.9 mm2 and a measured gain of over 12 dB at 15 GHz.
{"title":"Monolithic Analogue Phase Shifter and Cascode FET Amplifier using Uniplanar Techniques","authors":"S. Lucyszyn, I. Robertson, A. Aghvami","doi":"10.1109/EUMA.1994.337268","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337268","url":null,"abstract":"A precision millimetre-wave analogue phase shifter and a miniature Ku-band cascode FET amplifier are presented. Both MMICs are realised using uniplanar technology. The phase shifter employs a blend of coplanar waveguide and multilayer techniques. It has a worst-case rms phase error of only ± 1.0°, for all levels of relative phase shift up to 120°, across the 31 to 32 GHz frequency range. The amplifier is realised using a combination of coplanar waveguide, meandered 'thin-film' microstrip, and lumped elements. The amplifier has an active area of only 0.9 mm2 and a measured gain of over 12 dB at 15 GHz.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"147 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":"115700349","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.1994.337258
S. Kitazawa, H. Miyake, Y. Noguchi
In this paper, we present the newly developed very compact bandpass filters (BPFs). It is constructed by Capacitive-Gap-Coupled λgo/4 Coplanar Waveguide (CPW) resonators with tapped feed. Furthermore, we present the newly developed compact 4-pole and 6-pole CPW BPFs using this coupled construction. The good agreements are obtained between the simulations and the experimental results.
{"title":"Very Compact Capacitive-Gap-Coupled Bandpass Filters Using Tapped λgo/4 Coplanar Waveguide Resonators","authors":"S. Kitazawa, H. Miyake, Y. Noguchi","doi":"10.1109/EUMA.1994.337258","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337258","url":null,"abstract":"In this paper, we present the newly developed very compact bandpass filters (BPFs). It is constructed by Capacitive-Gap-Coupled λgo/4 Coplanar Waveguide (CPW) resonators with tapped feed. Furthermore, we present the newly developed compact 4-pole and 6-pole CPW BPFs using this coupled construction. The good agreements are obtained between the simulations and the experimental results.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"62 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":"114171348","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}
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