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A tunable Marchand balun at K band in silicon germanium (SiGe) technology 硅锗(SiGe)技术中K波段可调谐马尔尚平衡器
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107811
L. Boglione, J. Goodman
{"title":"A tunable Marchand balun at K band in silicon germanium (SiGe) technology","authors":"L. Boglione, J. Goodman","doi":"10.1109/GEMIC.2015.7107811","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107811","url":null,"abstract":"This paper presents the design of a switch-based, tunable Marchand balun at K band. The tunability is achieved by using pass gate CMOS structures that ideally switch in or out sections of the balun, thereby controlling its frequency response. The balun is fabricated in a high performance SiGe BiCMOS process with standard 180 nm CMOS technology. The ability to tune the response across a frequency range is demonstrated. The balun is characterized in terms of mixed signal scattering parameters. Extensive layout and simulations have been executed. The authors believe this is the first demonstration of a tunable balun using pass gate structures to change the lengths of the balun windings in the high region of the microwave range.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115221145","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}
引用次数: 2
Permittivity sensor based on 60 GHz patch antenna 基于60ghz贴片天线的介电常数传感器
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107816
S. Vehring, S. Guha, F. I. Jamal, D. Kissinger, C. Meliani
{"title":"Permittivity sensor based on 60 GHz patch antenna","authors":"S. Vehring, S. Guha, F. I. Jamal, D. Kissinger, C. Meliani","doi":"10.1109/GEMIC.2015.7107816","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107816","url":null,"abstract":"In this paper, a sensor based on a 60 GHz rectangular patch antenna is presented, for characterising materials based on the permittivity variation in the reactive near-field. The resonant frequency of the patch antenna is a function of the dielectric ambient around it. Thus, the resonant frequency is scaled accordingly, based on the permittivities of various materials under test. Therefore, the permittivity information is translated to a resonant frequency shift of the patch antenna. The patch antenna was fabricated on Isola Astra 300 microwave substrate and measured with different solid and liquid material on top of the patch antenna. In addition to that a simple readout circuit was proposed and realized in 0.25 μm SiGe:C BiCMOS, which can be used in the future to convert the reflected power of the antenna into a corresponding DC-value.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129602676","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}
引用次数: 1
Distributed active balun with improved linearity performance 提高线性性能的分布式主动平衡
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107761
M. Palomba, D. Palombini, S. Colangeli, R. Cleriti, E. Limiti
{"title":"Distributed active balun with improved linearity performance","authors":"M. Palomba, D. Palombini, S. Colangeli, R. Cleriti, E. Limiti","doi":"10.1109/GEMIC.2015.7107761","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107761","url":null,"abstract":"A new active balun topology is introduced allowing to overcome gain and bandwidth limitations of traditional out-of-phase power dividers. Proposed architecture employs distributed circuits as Artificial Transmission Line Pair (ATLP) and Split Drain Distributed Amplifier (SDDA) for achieving a broadband signal balancing and featuring a positive insertion gain too. In this contribution a complete theoretical analysis for the ATLP and SDDA principle of operation is provided together with the description of the actual design flow. MMIC test vehicle operating on the multi-octave frequency range 2-18 GHz proves the effectiveness of presented topology.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132491399","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}
引用次数: 1
Efficient behavioral model extraction of nonlinear active devices using adaptive sampling with compact nonlinearity measure 非线性有源器件的自适应采样行为模型提取
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107835
P. Barmuta, F. Ferranti, A. Lewandowski, D. Schreurs
{"title":"Efficient behavioral model extraction of nonlinear active devices using adaptive sampling with compact nonlinearity measure","authors":"P. Barmuta, F. Ferranti, A. Lewandowski, D. Schreurs","doi":"10.1109/GEMIC.2015.7107835","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107835","url":null,"abstract":"Description of nonlinear active devices is very complex, and depends on many input variables. Therefore, extraction of behavioral models based on traditional Designs of Experiments, such as factorial or Latin hypercube, may be unacceptably expensive in terms of sample evaluation time. In order to limit the total number of samples required to obtain accurate behavioral models, an adaptive sampling strategy may be used. It is based on surrogate models that are extracted for each sampling iteration. As nonlinear description consists also of many output variables, a common synthetic quantity is proposed to limit the surrogate modeling cost. It is defined as a total change of all the output quantities. The approach was evaluated in measurements of a 0.15 μm pHEMT model. The modeling accuracy is improved, while significant modeling-cost reduction can be observed.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132791038","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}
引用次数: 3
Evaluation and optimization of active signal canceling for coexistence management in vehicular multistandard transceivers 车载多标收发器共存管理中主动信号对消的评估与优化
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107821
A. Posselt, M. Welpot, Christian Bohm, O. Klemp, B. Geck
{"title":"Evaluation and optimization of active signal canceling for coexistence management in vehicular multistandard transceivers","authors":"A. Posselt, M. Welpot, Christian Bohm, O. Klemp, B. Geck","doi":"10.1109/GEMIC.2015.7107821","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107821","url":null,"abstract":"In this paper the suitability of active signal canceling architectures for interference reduction and coexistence management within multistandard transceivers for automotive use is evaluated. After description of the key concepts of reconfigurable vehicular connectivity architectures, we discuss active signal cancellation as an approach to suppress interference from transmitted signals. The realized architecture yields attenuations of up to 60 dB for sine signals and sufficient suppression for typical signals with a non-zero bandwidth. Based on the analysis the system is evaluated for a typical coexistence scenario in which a terrestrial Digital Video Broadcast (DVB-T) signal is successfully received within a multistandard transceiver, which transmits an interfering and potentially blocking adjacent signal at the same time.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130095299","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}
引用次数: 0
M-sequence-based material characterisation 基于m序列的材料表征
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107742
Carsten Monka, Sebastian Brueckner, J. Schoebel
{"title":"M-sequence-based material characterisation","authors":"Carsten Monka, Sebastian Brueckner, J. Schoebel","doi":"10.1109/GEMIC.2015.7107742","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107742","url":null,"abstract":"In this paper, we present a novel time domain technique for measuring the relative permittivity εr of samples based on pseudonoise test signals (M-sequences). Analog correlation is the key enabler of our system, providing high time resolution while minimising the effort required for sampling. Moreover, a linear error model is proposed and the system's measurement uncertainty is assessed. A comparison with reference measurements of PTFE samples concludes this paper.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126041654","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}
引用次数: 4
Compact multiport system for broadband measurement of S-parameters 用于宽带s参数测量的紧凑型多端口系统
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107834
K. Staszek, S. Gruszczynski, K. Wincza
{"title":"Compact multiport system for broadband measurement of S-parameters","authors":"K. Staszek, S. Gruszczynski, K. Wincza","doi":"10.1109/GEMIC.2015.7107834","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107834","url":null,"abstract":"In this paper a novel multiport measuring system is presented. It allows for the measurement of both reflection and transmission coefficients. The system features an advantageous power distribution, which can be appropriately tuned in order to enhance the measurement accuracy. The system performance has been experimentally verified by S-parameters measurements of a bandpass filter. The obtained results are in a very good agreement with the values measured using a commercial VNA. Moreover, the measurement results clearly show that the tunable power distribution increases the measurement accuracy.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114359669","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}
引用次数: 2
Enhancing dynamic range and accuracy of load-pull measurements by using prematched transistors 利用预匹配晶体管提高负载-拉力测量的动态范围和精度
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107815
E. Ersoy, O. Bengtsson, W. Heinrich
{"title":"Enhancing dynamic range and accuracy of load-pull measurements by using prematched transistors","authors":"E. Ersoy, O. Bengtsson, W. Heinrich","doi":"10.1109/GEMIC.2015.7107815","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107815","url":null,"abstract":"This paper describes how dynamic range and accuracy of an on-wafer load pull measurement system can be improved without costly investment in equipment. Applying prematching to the transistors on the wafer reduces ohmic losses, leads to a better figure of merit ΔGT, and thus increases the accuracy of the whole system. The approach is verified for X-band GaN power transistors.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114588660","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}
引用次数: 0
Graphene-based MMIC process development and RF passives design 基于石墨烯的MMIC工艺开发和射频无源设计
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107813
A. Askar, A. Hamed, M. Saeed, A. Sagade, D. Neumaier, R. Negra
{"title":"Graphene-based MMIC process development and RF passives design","authors":"A. Askar, A. Hamed, M. Saeed, A. Sagade, D. Neumaier, R. Negra","doi":"10.1109/GEMIC.2015.7107813","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107813","url":null,"abstract":"This paper describes an available graphene process with respect to material properties and also the work in progress to complete the graphene process back-end implementation to be MMIC-compatible. This process extension is critical to enable fully integrated circuits and systems based on graphene transistors. A stable process back-end is proposed, characterized and tested on both silicon and quartz substrates. Based on this, a process cross-section is now available for EM simulations. A prototype chip of RF passive devices including spiral inductors, MIM capacitors and thin film resistors, TFRs, is fabricated and measured on both substrates. On-wafer measurements of the fabricated passive devices up to 30 GHz show good agreement with EM simulation results.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120965366","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}
引用次数: 2
Estimation of uncompensated trajectory deviations and image refocusing for high-resolution SAR 高分辨率SAR非补偿轨迹偏差估计与图像重聚焦
2015 German Microwave Conference Pub Date : 2015-03-16 DOI: 10.1109/GEMIC.2015.7107784
I. Gorovyi, O. Bezvesilniy, D. Vavriv
{"title":"Estimation of uncompensated trajectory deviations and image refocusing for high-resolution SAR","authors":"I. Gorovyi, O. Bezvesilniy, D. Vavriv","doi":"10.1109/GEMIC.2015.7107784","DOIUrl":"https://doi.org/10.1109/GEMIC.2015.7107784","url":null,"abstract":"The accuracy of trajectory measurements is one of the crucial factors in high-resolution SAR imaging. Common navigation systems often do not fulfill the requirements that results in significant image quality degradation. In the paper, a new autofocus algorithm for the reconstruction of the SAR platform trajectory deviations is proposed. The approach is based on the estimation of the Doppler rate errors on a sequence of short-time intervals. The method is capable of estimation of time-varying and range-dependent phase error functions. The key steps of the developed technique are illustrated. The method is demonstrated on experimental data obtained with an X-band airborne SAR system.","PeriodicalId":229585,"journal":{"name":"2015 German Microwave Conference","volume":"49 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121194543","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}
引用次数: 0
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