9 results on '"Sébastien Frégonèse"'
Search Results
2. SiGe HBTs and BiCMOS Technology for Present and Future Millimeter-Wave Systems
- Author
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Thomas Zimmer, Josef Bock, Fred Buchali, Pascal Chevalier, Michael Collisi, Bjorn Debaillie, Marina Deng, Philippe Ferrari, Sebastien Fregonese, Christophe Gaquiere, Haitham Ghanem, Horst Hettrich, Alper Karakuzulu, Tim Maiwald, Marc Margalef-Rovira, Caroline Maye, Michael Moller, Anindya Mukherjee, Holger Rucker, Paulius Sakalas, Rolf Schmid, Karina Disch, Karsten Schuh, Wolfgang Templ, Akshay Visweswaran, and Thomas Zwick
- Subjects
Heterojunction bipolar transistors (HBTs) ,high-frequency measurements ,millimeter wave ,SiGe ,technologies ,terahertz ,Telecommunication ,TK5101-6720 ,Electric apparatus and materials. Electric circuits. Electric networks ,TK452-454.4 - Abstract
This paper gives an overall picture from BiCMOS technologies up to THz systems integration, which were developed in the European Research project TARANTO. The European high performance BiCMOS technology platforms are presented, which have special advantages for addressing applications in the submillimeter-wave and THz range. The status of the technology process is reviewed and the integration challenges are examined. A detailed discussion on millimeter-wave characterization and modeling is given with emphasis on harmonic distortion analysis, power and noise figure measurements up to 190 GHz and 325 GHz respectively and S-parameter measurements up to 500 GHz. The results of electrical compact models of active (HBTs) and passive components are presented together with benchmark circuit blocks for model verification. BiCMOS-enabled systems and applications with focus on future wireless communication systems and high-speed optical transmission systems up to resulting net data rates of 1.55 Tbit/s are presented.
- Published
- 2021
- Full Text
- View/download PDF
3. THz Characterization and Modeling of SiGe HBTs: Review (Invited)
- Author
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Sebastien Fregonese, Marina Deng, Marco Cabbia, Chandan Yadav, Magali De Matos, and Thomas Zimmer
- Subjects
THz characterization ,mmW ,S-parameters ,on-wafer ,HBT ,BiCMOS ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
This article presents a state-of-art review of on-wafer S-parameter characterization of THz silicon transistors for compact modelling purpose. After, a brief review of calibration/de-embedding techniques, the paper focuses on the on-wafer calibration techniques and especially on the design and dimensions of lines built on advanced silicon technologies. Other information such as the pad geometry, the ground plane and the floorplan of the devices under test are also compared. The influence of RF probe geometry on the coupling with the substrate and adjacent structures is also considered to evaluate the accuracy of the measurement, especially using EM simulation methodology. Finally, the importance of measuring above 110 GHz is demonstrated for SiGe HBT parameter extraction. The validation of the compact model is confirmed thanks to an EM-SPICE co-simulation that integrates the whole calibration cum de-embedding procedure.
- Published
- 2020
- Full Text
- View/download PDF
4. A Broadband Active Microwave Monolithically Integrated Circuit Balun in Graphene Technology
- Author
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Dalal Fadil, Vikram Passi, Wei Wei, Soukaina Ben Salk, Di Zhou, Wlodek Strupinski, Max C. Lemme, Thomas Zimmer, Emiliano Pallecchi, Henri Happy, and Sebastien Fregonese
- Subjects
graphene ,microwave ,mmic ,integrated circuits ,active balun ,2d materials ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
This paper presents the first graphene radiofrequency (RF) monolithic integrated balun circuit. It is composed of four integrated graphene field effect transistors (GFETs). This innovative active balun concept takes advantage of the GFET ambipolar behavior. It is realized using an advanced silicon carbide (SiC) based bilayer graphene FET technology having RF performances of about 20 GHz. Balun circuit measurement demonstrates its high frequency capability. An upper limit of 6 GHz has been achieved when considering a phase difference lower than 10° and a magnitude of amplitude imbalance less than 0.5 dB. Hence, this circuit topology shows excellent performance with large broadband performance and a functionality of up to one-third of the transit frequency of the transistor.
- Published
- 2020
- Full Text
- View/download PDF
5. Source-Pull and Load-Pull Characterization of Graphene FET
- Author
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Sebastien Fregonese, Magali de Matos, David Mele, Cristell Maneux, Henri Happy, and Thomas Zimmer
- Subjects
Graphene ,FET ,circuit design ,impedance matching ,source-pull ,load-pull ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
This paper presents the characterization of a GFET transistor using a source-pull/load-pull test set. The characterization shows that despite the good fT and fMAX, it is hard to achieve power gain using the GFET device within a circuit configuration. This is due to the very high impedance at the gate making impedance matching at the input extremely difficult. S-parameter characterization is performed and the associated small signal model is developed in order to further analyse and extrapolate the source-pull and load-pull measurement results. A good agreement is observed between small signal model simulation results and source-pull/load-pull measurements. Finally, the model is used to evaluate the optimum power gain of the transistor in a circuit configuration under matched conditions.
- Published
- 2015
- Full Text
- View/download PDF
6. SiGe HBTs Optimization for Wireless Power Amplifier Applications
- Author
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Pierre-Marie Mans, Sebastien Jouan, Sebastien Fregonese, Benoit Vandelle, Denis Pache, Caroline Arnaud, Cristell Maneux, and Thomas Zimmer
- Subjects
Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
This paper deals with SiGe HBTs optimization for power amplifier applications dedicated to wireless communications. In this work, we investigate the fT-BVCEO tradeoff by various collector optimization schemes such as epilayer thickness and dopant concentration, and SIC and CAP characteristics. Furthermore, a new trapezoidal base Germanium (Ge) profile is proposed. Thanks to this profile, precise control of Ge content at the metallurgical emitter-base junction is obtained. Gain stability is obtained for a wide range of temperatures through tuning the emitter-base junction Ge percent. Finally, a comprehensive investigation of Ge introduction into the collector (backside Ge profile) is conducted in order to improve the fT values at high injection levels.
- Published
- 2010
- Full Text
- View/download PDF
7. List of Contributors
- Author
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J. Ajayan, Saurabh Chaudhury, Suprem R. Das, Prabhat Kumar Dubey, Rosario D’Esposito, Sébastien Frégonèse, Navdeep Goyal, Ravi S. Hegde, Rahul Kumar Jaiswal, Saumyakanti Khatua, R.K. Kotnala, Yaochuan Mei, Sachin Mishra, Sparsh Mittal, D. Nirmal, Nidhi Pandit, Nagendra Prasad Pathak, Shibnath Pathak, Bhargav Raval, Berardi Sensale-Rodriguez, Vaishali Shukla, Man Singh, Sanjeet Kumar Sinha, Kuldeep C. Verma, Xinbo Wang, and Thomas Zimmer
- Published
- 2019
- Full Text
- View/download PDF
8. Calibrage sur plaquette et caractérisation des dispositifs à ondes (sub)millimétriques
- Author
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Cabbia, Marco, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Université de Bordeaux, Thomas Zimmer, Sébastien Frégonèse, and Marina Deng
- Subjects
SiGe HBT ,Térahertz ,Caractérisation ,Ondes millimétriques ,Characterization ,Transmission Lines ,TBH en SiGe ,THz ,Millimeter-Wave ,On-Wafer Calibration ,Calibrage sur silicium ,Lignes de transmission ,[SPI.TRON]Engineering Sciences [physics]/Electronics - Abstract
Precision measurements play a crucial role in electronic engineering, particularly in the characterization of silicon-based heterojunction bipolar transistors (HBTs) embedded into devices for THz applications using the BiCMOS technology. Thanks to ongoing innovations in terms of nanoscale technology manufacturing, devices capable of operating in the sub-millimeter wave region are becoming a reality, and need to support the demand for high frequency circuits and systems. To have accurate models at such frequencies, it is no longer possible to limit the parameter extraction below 110 GHz, and new techniques for obtaining reliable measurements of passive and active devices must be investigated.In this thesis, we examine the on-wafer S-parameters characterization of various passive test structures and SiGe HBTs in STMicroelectronics' B55 technology, up to 500 GHz. We start with an introduction of the measuring equipment usually employed for this type of analysis, then moving on to the various probe stations adopted at the IMS Laboratory, and finally focusing on calibration and deembedding techniques, reviewing the major criticalities of high-frequency characterization and comparing two on-wafer calibration algorithms (SOLT and TRL) up to the WR-2.2 band.Two photomask production runs for on-wafer characterization, both designed at IMS, are considered: we introduce a new floorplan design and evaluate its ability to limit parasitic effects as well as the effect of the environment (substrate, neighbors, and crosstalk). For our analysis, we rely on electromagnetic simulations and joint device model + probe EM simulations, both including probe models for an evaluation of measurement results closer to real-world conditions.Finally, we present some test structures to evaluate unwanted impacts on millimeter wave measurements and novel transmission line design solutions. Two promising designs are carefully studied: the "M3 layout", which aims to characterize the DUT in a single-tier calibration, and the "meander lines", which keeps the inter-probe distance constant by avoiding any sort of probe displacement during on-wafer measurements.; Les mesures de précision jouent un rôle crucial dans l'électronique, en particulier dans la caractérisation des transistors bipolaires à hétérojonction (HBT) à base de silicium embarqués dans des dispositifs pour applications THz utilisant la technologie BiCMOS. Grâce aux innovations récentes en termes de fabrication de technologies à l'échelle nanométrique, les dispositifs capables de fonctionner dans la région des ondes submillimétriques deviennent une réalité et doivent répondre à la demande de circuits et de systèmes haute-fréquence. Pour disposer de modèles précis à de telles fréquences, il n'est plus possible de limiter l'extraction des paramètres en dessous de 110 GHz, et de nouvelles techniques permettant d'obtenir des mesures fiables de dispositifs passifs et actifs doivent être étudiées.Dans cette thèse, nous examinerons la caractérisation des paramètres S sur silicium (on-wafer) de différentes structures de test passives et des HBT SiGe en technologie B55 de STMicroelectronics, jusqu'à 500 GHz. Nous commencerons par une introduction de l'équipement de mesure habituellement utilisé pour ce type d'analyse, puis nous passerons aux différents bancs de mesure adoptés au laboratoire IMS, et enfin nous nous concentrerons sur les techniques de calibrage et d’épluchage (de-embedding), en passant en revue les principales criticités de la caractérisation haute-fréquence et en comparant deux algorithmes de calibrage on-wafer (SOLT et TRL) jusqu'à la bande WR-2.2.Deux cycles de production de photomasques pour la caractérisation on-wafer, tous deux conçus à l'IMS, seront présentés: nous introduirons un nouveau design du floorplan et évaluerons sa capacité à limiter les effets parasites ainsi que l'effet de son environnement (substrat, structures voisines et diaphonie). Pour notre analyse, nous nous appuierons sur des simulations électromagnétiques et des simulations EM mixtes de modèle compacte + sonde, toutes deux incluant les modèles des sonde pour une évaluation des résultats de mesure plus proche des conditions réelles.Enfin, nous présenterons quelques structures de test pour évaluer les impacts indésirables sur les mesures d'ondes millimétriques et de nouvelles solutions de conception de lignes de transmission. Deux designs prometteurs seront soigneusement étudiées: le "layout M3", qui vise à caractériser le DUT dans un étalonnage à un seul niveau, et les "lignes à méandre", qui maintiennent la distance entre les deux sondes constante en évitant tout déplacement pendant les mesures sur silicium.
- Published
- 2021
9. (Sub)-millimeter wave on-wafer calibration and device characterization
- Author
-
Cabbia, Marco, STAR, ABES, Zimmer, Thomas, Frégonèse, Sébastien, Deng, Marina, Ferrari, Philippe, Gaquière, Christophe, Spirito, Marco, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Université de Bordeaux, Thomas Zimmer, Sébastien Frégonèse, and Marina Deng
- Subjects
Térahertz ,Characterization ,Transmission Lines ,On-Wafer Calibration ,[SPI.TRON] Engineering Sciences [physics]/Electronics ,[SPI.TRON]Engineering Sciences [physics]/Electronics ,SiGe HBT ,Caractérisation ,Ondes millimétriques ,TBH en SiGe ,THz ,Millimeter-Wave ,Calibrage sur silicium ,Lignes de transmission - Abstract
Precision measurements play a crucial role in electronic engineering, particularly in the characterization of silicon-based heterojunction bipolar transistors (HBTs) embedded into devices for THz applications using the BiCMOS technology. Thanks to ongoing innovations in terms of nanoscale technology manufacturing, devices capable of operating in the sub-millimeter wave region are becoming a reality, and need to support the demand for high frequency circuits and systems. To have accurate models at such frequencies, it is no longer possible to limit the parameter extraction below 110 GHz, and new techniques for obtaining reliable measurements of passive and active devices must be investigated.In this thesis, we examine the on-wafer S-parameters characterization of various passive test structures and SiGe HBTs in STMicroelectronics' B55 technology, up to 500 GHz. We start with an introduction of the measuring equipment usually employed for this type of analysis, then moving on to the various probe stations adopted at the IMS Laboratory, and finally focusing on calibration and deembedding techniques, reviewing the major criticalities of high-frequency characterization and comparing two on-wafer calibration algorithms (SOLT and TRL) up to the WR-2.2 band.Two photomask production runs for on-wafer characterization, both designed at IMS, are considered: we introduce a new floorplan design and evaluate its ability to limit parasitic effects as well as the effect of the environment (substrate, neighbors, and crosstalk). For our analysis, we rely on electromagnetic simulations and joint device model + probe EM simulations, both including probe models for an evaluation of measurement results closer to real-world conditions.Finally, we present some test structures to evaluate unwanted impacts on millimeter wave measurements and novel transmission line design solutions. Two promising designs are carefully studied: the "M3 layout", which aims to characterize the DUT in a single-tier calibration, and the "meander lines", which keeps the inter-probe distance constant by avoiding any sort of probe displacement during on-wafer measurements., Les mesures de précision jouent un rôle crucial dans l'électronique, en particulier dans la caractérisation des transistors bipolaires à hétérojonction (HBT) à base de silicium embarqués dans des dispositifs pour applications THz utilisant la technologie BiCMOS. Grâce aux innovations récentes en termes de fabrication de technologies à l'échelle nanométrique, les dispositifs capables de fonctionner dans la région des ondes submillimétriques deviennent une réalité et doivent répondre à la demande de circuits et de systèmes haute-fréquence. Pour disposer de modèles précis à de telles fréquences, il n'est plus possible de limiter l'extraction des paramètres en dessous de 110 GHz, et de nouvelles techniques permettant d'obtenir des mesures fiables de dispositifs passifs et actifs doivent être étudiées.Dans cette thèse, nous examinerons la caractérisation des paramètres S sur silicium (on-wafer) de différentes structures de test passives et des HBT SiGe en technologie B55 de STMicroelectronics, jusqu'à 500 GHz. Nous commencerons par une introduction de l'équipement de mesure habituellement utilisé pour ce type d'analyse, puis nous passerons aux différents bancs de mesure adoptés au laboratoire IMS, et enfin nous nous concentrerons sur les techniques de calibrage et d’épluchage (de-embedding), en passant en revue les principales criticités de la caractérisation haute-fréquence et en comparant deux algorithmes de calibrage on-wafer (SOLT et TRL) jusqu'à la bande WR-2.2.Deux cycles de production de photomasques pour la caractérisation on-wafer, tous deux conçus à l'IMS, seront présentés: nous introduirons un nouveau design du floorplan et évaluerons sa capacité à limiter les effets parasites ainsi que l'effet de son environnement (substrat, structures voisines et diaphonie). Pour notre analyse, nous nous appuierons sur des simulations électromagnétiques et des simulations EM mixtes de modèle compacte + sonde, toutes deux incluant les modèles des sonde pour une évaluation des résultats de mesure plus proche des conditions réelles.Enfin, nous présenterons quelques structures de test pour évaluer les impacts indésirables sur les mesures d'ondes millimétriques et de nouvelles solutions de conception de lignes de transmission. Deux designs prometteurs seront soigneusement étudiées: le "layout M3", qui vise à caractériser le DUT dans un étalonnage à un seul niveau, et les "lignes à méandre", qui maintiennent la distance entre les deux sondes constante en évitant tout déplacement pendant les mesures sur silicium.
- Published
- 2021
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