Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.339062
B. Altrabsheh, R. Collier
A programmable phase shifter has been designed and used in a dielectric multistate reflectometer (DMR), which gives a flat relative phase shift over the entire frequency range from 110 GHz up to 170 GHz. It consists of an eccentric rotating cylinder, adjacent to a dielectric guide, which is driven by a stepping motor. The paper describes the performance of the phase shifter used in a DMR.
{"title":"A Programmable Phase Shifter for a Dielectric Waveguide Multistate Reflectometer","authors":"B. Altrabsheh, R. Collier","doi":"10.1109/EUMA.2001.339062","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339062","url":null,"abstract":"A programmable phase shifter has been designed and used in a dielectric multistate reflectometer (DMR), which gives a flat relative phase shift over the entire frequency range from 110 GHz up to 170 GHz. It consists of an eccentric rotating cylinder, adjacent to a dielectric guide, which is driven by a stepping motor. The paper describes the performance of the phase shifter used in a DMR.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132222661","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 : 2001-10-01DOI: 10.1109/EUMA.2001.339065
K. Hettak, C. J. Verver, M. Stubbs, G. Morin
A very compact 90° ACPS branchline coupler for Ka/K-band, advanced SATCOM terminal systems is reported. The proposed method takes advantage of the integration of coplanar waveguide (CPW) shunt stubs and asymmetric coplanar stripline (ACPS) lines. The coupler does not use lumped inductors or capacitors and, consequently, has the advantages of excellent design accuracy even at high frequencies. In comparison to conventional hybrid couplers, this coupler offers lower insertion loss, higher compactness (a significant 55% reduction in circuit area) and does not require a CPW quarter wavelength transformer in order to overcome the input and output port characteristic impedances. Additional degrees of design freedom can be obtained by the inclusion of shunt CPW stubs and these are the reason for the major reduction in size. The reduced size couplers are potential building blocks for the growing wireless communications market.
{"title":"New Types of Very Compact 90° ACPS Branchline Couplers using CPW Shunt Stubs","authors":"K. Hettak, C. J. Verver, M. Stubbs, G. Morin","doi":"10.1109/EUMA.2001.339065","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339065","url":null,"abstract":"A very compact 90° ACPS branchline coupler for Ka/K-band, advanced SATCOM terminal systems is reported. The proposed method takes advantage of the integration of coplanar waveguide (CPW) shunt stubs and asymmetric coplanar stripline (ACPS) lines. The coupler does not use lumped inductors or capacitors and, consequently, has the advantages of excellent design accuracy even at high frequencies. In comparison to conventional hybrid couplers, this coupler offers lower insertion loss, higher compactness (a significant 55% reduction in circuit area) and does not require a CPW quarter wavelength transformer in order to overcome the input and output port characteristic impedances. Additional degrees of design freedom can be obtained by the inclusion of shunt CPW stubs and these are the reason for the major reduction in size. The reduced size couplers are potential building blocks for the growing wireless communications market.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134350362","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 : 2001-10-01DOI: 10.1109/EUMA.2001.339124
L. Martoglio, E. Richalot, O. Picon, G. Lissorgues-Bazin, C. Vasseure
A new low loss and low cost microstrip MEMS technology is presented. Two inverted microstrip lines, one on low loss silicon and the other on glass have been measured and simulated. A good concordance of the results has been obtained. Simulations have been used to study the influence of several parameters, and the results of simulations allow us to adjust the lines dimensions to prescribed characteristics.
{"title":"Low-Loss Microstrip MEMS Technology for RF Passive Components","authors":"L. Martoglio, E. Richalot, O. Picon, G. Lissorgues-Bazin, C. Vasseure","doi":"10.1109/EUMA.2001.339124","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339124","url":null,"abstract":"A new low loss and low cost microstrip MEMS technology is presented. Two inverted microstrip lines, one on low loss silicon and the other on glass have been measured and simulated. A good concordance of the results has been obtained. Simulations have been used to study the influence of several parameters, and the results of simulations allow us to adjust the lines dimensions to prescribed characteristics.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134099597","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 : 2001-10-01DOI: 10.1109/EUMA.2001.339017
M. Gonzalez, J. Zapata, J. Encinar
This work proposes a numerical procedure to analyse a novel cavity-backed microstrip array configuration that combines both the conventional disposition of patches on continuous dielectric layers and patches enclosed in metallic cavities. Different numerical techniques are effectively combined to obtain a modular approach appropriate for designing complex multilayer structures. Additionally, and based on the application of this modular technique, results for an alternative broad-band cavity-backed and capacitively probe-fed microstrip array configuration will be presented.
{"title":"Analysis of Cavity-Backed Multilayer Microstrip Patch Arrays on Continuous Dielectric Substrates by a Hybrid Modular Technique","authors":"M. Gonzalez, J. Zapata, J. Encinar","doi":"10.1109/EUMA.2001.339017","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339017","url":null,"abstract":"This work proposes a numerical procedure to analyse a novel cavity-backed microstrip array configuration that combines both the conventional disposition of patches on continuous dielectric layers and patches enclosed in metallic cavities. Different numerical techniques are effectively combined to obtain a modular approach appropriate for designing complex multilayer structures. Additionally, and based on the application of this modular technique, results for an alternative broad-band cavity-backed and capacitively probe-fed microstrip array configuration will be presented.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129084648","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 : 2001-10-01DOI: 10.1109/EUMA.2001.339188
K. Callery, P. Lowbridge
In this paper, the high volume process (as developed by Aeroflex MIC Technology) for depositing thin films comprising TaN, Ti, Ti/Pd alloy, Cu, Ni, Au (TTPCNA) onto materials such as alumina and aluminium nitride is presented. The benefits of this tested methodology are realized by improved process control, a reduction in cycle time, and minimal operator intervention in the process. These important considerations in today’s competitive manufacturing environment translate into higher yields, reduced cost to the customer and reliability in the field. This high volume line has a current run rate in excess of 24,000 substrates per week as it is presently configured with the ability to expand to 35,000 substrates per week with minimal investment. We then present a case study of the application of this technology, together with the ability to pre-deposit gold-tin solder, in the exacting application of mounting Laser diodes onto thin film heatsinks – which also convey the microwave / millimeter wave signal.
本文介绍了在氧化铝和氮化铝等材料上沉积由TaN、Ti、Ti/Pd合金、Cu、Ni、Au (TTPCNA)组成的薄膜的高容量工艺(由Aeroflex MIC Technology开发)。这种测试方法的好处是通过改进过程控制、缩短周期时间和最小化操作人员对过程的干预来实现的。在当今竞争激烈的制造环境中，这些重要的考虑因素转化为更高的产量，降低客户的成本和现场的可靠性。这条大批量生产线目前的运行率超过每周24,000个基板，因为它目前的配置能够以最小的投资扩展到每周35,000个基板。然后，我们介绍了该技术的应用案例研究，以及预沉积金锡焊料的能力，在将激光二极管安装到薄膜散热器上的严格应用中，该薄膜散热器也传递微波/毫米波信号。
{"title":"Advances in Thin Film Techniques for Optical, Microwave and Millimeter wave Circuit Applications","authors":"K. Callery, P. Lowbridge","doi":"10.1109/EUMA.2001.339188","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339188","url":null,"abstract":"In this paper, the high volume process (as developed by Aeroflex MIC Technology) for depositing thin films comprising TaN, Ti, Ti/Pd alloy, Cu, Ni, Au (TTPCNA) onto materials such as alumina and aluminium nitride is presented. The benefits of this tested methodology are realized by improved process control, a reduction in cycle time, and minimal operator intervention in the process. These important considerations in today’s competitive manufacturing environment translate into higher yields, reduced cost to the customer and reliability in the field. This high volume line has a current run rate in excess of 24,000 substrates per week as it is presently configured with the ability to expand to 35,000 substrates per week with minimal investment. We then present a case study of the application of this technology, together with the ability to pre-deposit gold-tin solder, in the exacting application of mounting Laser diodes onto thin film heatsinks – which also convey the microwave / millimeter wave signal.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132355096","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 : 2001-10-01DOI: 10.1109/EUMA.2001.338930
M. Capurso, M. Piloni, M. Guglielmi
The state of the art of evanescent mode filter is extended in this paper by introducing direct coupled resonant aperture filters with extended rejection performance and reduced total length. The type of filter structure discussed in this paper shares all of the known advantages of the evanescent mode filters and exhibits in addition the important feature of being amenable to a rigorous full wave electromagnetic analysis. In addition to theory, measured results are also presented thereby fully validating the proposed filter concept.
{"title":"Resonant Aperture Filters: Improved Out-Of-Band Rejection and Size Reduction","authors":"M. Capurso, M. Piloni, M. Guglielmi","doi":"10.1109/EUMA.2001.338930","DOIUrl":"https://doi.org/10.1109/EUMA.2001.338930","url":null,"abstract":"The state of the art of evanescent mode filter is extended in this paper by introducing direct coupled resonant aperture filters with extended rejection performance and reduced total length. The type of filter structure discussed in this paper shares all of the known advantages of the evanescent mode filters and exhibits in addition the important feature of being amenable to a rigorous full wave electromagnetic analysis. In addition to theory, measured results are also presented thereby fully validating the proposed filter concept.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132736048","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 : 2001-10-01DOI: 10.1109/EUMA.2001.339122
G. Sajin, R. Marcelli
A frequency tunable magnetostatic wave (MSW) straight edge resonator (SER) made by a YIG film has been used as a selective frequency component in a micromachined resonating filter. Sparameters have been measured at different DC magnetic bias fields, with a frequency tunability between 2 GHz and 6 GHz ca.. An improvement of the performances for the SERs excited by micromachined microstrip transducers has been clearly demonstrated. Moreover, the utilization of silicon membranes to support MSW-SERs offers important openings toward the integration of magnetostatic wave devices with micromachined structures.
{"title":"Micromachined Magnetostatic Wave Resonators","authors":"G. Sajin, R. Marcelli","doi":"10.1109/EUMA.2001.339122","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339122","url":null,"abstract":"A frequency tunable magnetostatic wave (MSW) straight edge resonator (SER) made by a YIG film has been used as a selective frequency component in a micromachined resonating filter. Sparameters have been measured at different DC magnetic bias fields, with a frequency tunability between 2 GHz and 6 GHz ca.. An improvement of the performances for the SERs excited by micromachined microstrip transducers has been clearly demonstrated. Moreover, the utilization of silicon membranes to support MSW-SERs offers important openings toward the integration of magnetostatic wave devices with micromachined structures.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"7 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114111714","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 : 2001-10-01DOI: 10.1109/EUMA.2001.339059
G. Goussetis, D. Budimir
Modeling, design and experimental verification of E-plane ridge waveguide filters are presented. The proposed filters have been integrated in a fully double ridge waveguide diplexer including a double ridge waveguide T-junction. Mode matching method based tools have been developed for the electromagnetic simulation of ridge waveguide filters and T-junctions. Design procedures for the filters and diplexers are also presented. Experimental testing for the ridge waveguide filter and comparison with commercial finite element method simulator for a diplexer structure confirms the accuracy of the developed tools.
{"title":"E-Plane Double Ridge Waveguide Filters and Diplexers for Communication Systems","authors":"G. Goussetis, D. Budimir","doi":"10.1109/EUMA.2001.339059","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339059","url":null,"abstract":"Modeling, design and experimental verification of E-plane ridge waveguide filters are presented. The proposed filters have been integrated in a fully double ridge waveguide diplexer including a double ridge waveguide T-junction. Mode matching method based tools have been developed for the electromagnetic simulation of ridge waveguide filters and T-junctions. Design procedures for the filters and diplexers are also presented. Experimental testing for the ridge waveguide filter and comparison with commercial finite element method simulator for a diplexer structure confirms the accuracy of the developed tools.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116705047","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 : 2001-10-01DOI: 10.1109/EUMA.2001.338995
A. Gorur, C. Karpuz, K. Yalcin
A novel one-dimensional (1-D) photonic bandgap (PBG) structure for microstrip lines is proposed. This new circuit is consisting of cross-gaps and base-to-base triangles etched in the ground plane of microstrip line. The PBG structures were designed and fabricated with different dimensions. It has been shown that the stopband characteristics may be controlled by tuning the geometrical dimensions. Also, multiple-frequency-tuned PBG structure has been derived by increasing the geometrical dimension.
{"title":"A Novel Photonic Bandgap (PBG) Structure","authors":"A. Gorur, C. Karpuz, K. Yalcin","doi":"10.1109/EUMA.2001.338995","DOIUrl":"https://doi.org/10.1109/EUMA.2001.338995","url":null,"abstract":"A novel one-dimensional (1-D) photonic bandgap (PBG) structure for microstrip lines is proposed. This new circuit is consisting of cross-gaps and base-to-base triangles etched in the ground plane of microstrip line. The PBG structures were designed and fabricated with different dimensions. It has been shown that the stopband characteristics may be controlled by tuning the geometrical dimensions. Also, multiple-frequency-tuned PBG structure has been derived by increasing the geometrical dimension.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115505264","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 : 2001-10-01DOI: 10.1109/EUMA.2001.338944
J. D. de Vaate, D. Geskus, R. Witvers
For the phased array concept of the next generation radio telescopes, the Square Kilometre Array (SKA), a large number of broadband, low noise amplifiers are necessary. The envisaged array antennas for SKA are printed circuit type antennas (Vivaldy, bunny ear) Smolders (1), which should be integrated with the first amplifier stages. To enable optimum performance over a decade bandwidth it is advantageous to directly match the antenna impedance to the required impedances for low noise matching and maximum power transfer of the active device, without an intermediate matching step to 50 ohm as is common for most microwave and RF systems. This paper describes the design, but more importantly the characterization, of the integrated active antenna. An accurate characterization of e.g. noise figure cannot be executed with standard equipment due to the non-50 ohm intermediate impedance levels. To overcome this problem, a hot/cold noise figure measurements has been developed for the complete active antenna.
{"title":"Integrated Active Antenna Noise Figure Characterization Using a Cryogenic Anechoic Noise Source","authors":"J. D. de Vaate, D. Geskus, R. Witvers","doi":"10.1109/EUMA.2001.338944","DOIUrl":"https://doi.org/10.1109/EUMA.2001.338944","url":null,"abstract":"For the phased array concept of the next generation radio telescopes, the Square Kilometre Array (SKA), a large number of broadband, low noise amplifiers are necessary. The envisaged array antennas for SKA are printed circuit type antennas (Vivaldy, bunny ear) Smolders (1), which should be integrated with the first amplifier stages. To enable optimum performance over a decade bandwidth it is advantageous to directly match the antenna impedance to the required impedances for low noise matching and maximum power transfer of the active device, without an intermediate matching step to 50 ohm as is common for most microwave and RF systems. This paper describes the design, but more importantly the characterization, of the integrated active antenna. An accurate characterization of e.g. noise figure cannot be executed with standard equipment due to the non-50 ohm intermediate impedance levels. To overcome this problem, a hot/cold noise figure measurements has been developed for the complete active antenna.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125370881","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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