Дисертації з теми "Boucleà verrouillage de phase"
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Louafi, Moussa. "Boucles à verrouillage de phase pour les transmissions par salves." Paris 11, 1986. http://www.theses.fr/1986PA112059.
In many communication receivers, it's necessary to locally generate carrier or clock reference signals. Generally, these signals are derived from the incoming signal using Phase-Locked Loops (PLLs). PLLs are usually considered in the classical mode of operation, where the input signal is permanently present. Nevertheless, these deviees are very used now in another mode of operation, where the input sig nal is present only in bursts. This is, for example, the case of the T. D. M. A system or the M. A. C television system. The study presented in this thesis deals with the operating properties of the PLLs used in the burst mode of operation. In this study, we consider the following types of PLLs: first order PLLs, second order PLLs with a passive lag-lead filter, second order PLLs with an active (proportional-plus-integral) filter, first order PLLs with a zero order hold, second order PLLs with a passive lag-lead filter and a zero order hold. The behavior of these PLLs is studied generally in the case of an operation characterized by an incoming signal affected by step changes in phase and frequency. The performances of these PLLs in the presence of an additive Gaussian noise are also presented. The last part is devoted to the practical use of the results of this study to the M. A. C system case
Louafi, Moussa. "Boucles à verrouillage de phase pour les transmissions par salves." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb375992432.
El, Janati El Idrissi Rachid. "Réduction de la gigue systématique des boucles à verrouillage de phase numériques." Brest, 1994. http://www.theses.fr/1994BRES2012.
Lucas, de Peslouan Pierre-Olivier. "Conception orientée délai : étude, développement et réalisation d’une boucle à verrouillage de phase large bande stabilisée par une boucle à verrouillage de délai." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14265/document.
The explosion of the wireless communication market is largely responsible of the expansion for RF communication standards for voice and data. Nowadays, each one of them must be integrated in one mobile terminal.However, this trend is opposed to the constraints of low cost, which tend to reduce the size of the electronics in a mobile terminal, but also the constraints of reduced consumption for greater autonomy for wireless systems. It is then around these technological and technical barriers that focus an important part of efforts to « R & D » today. Thus, the objective of the work presented is based on research and development of an architecture that contributes to improve the performances of the central block of transceivers: the local oscillator.The innovative architecture of multistandard synthesizer realized is based on the principle of Delay Oriented Design (DOD). A new technique of stabilization, based on the superposition of a delay and a phase locked loop, is proposed to expand the bandwidth. From study system to measurements through the behavioral comportment and implementation of the circuit, the various stages when designing an RF system are presented. Simulations and measurements have demonstrated the ability of the synthesizer to cover a frequency band between 1.6 and 3.5 GHz with a reference signal at 500MHz, but also to stabilize a broadband architecture
Sugihartono. "Caractérisation expérimentale des boucles à verrouillage de phase numériques en présence de bruit." Toulouse, ENSAE, 1987. http://www.theses.fr/1987ESAE0002.
Sugihartono. "Caractérisation expérimentale des boucles à verrouillage de phase numériques en présence de bruit." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37616754w.
Bentayeb, Salah. "Modélisation et performances des boucles à verrouillage de phase numériques en présence de bruit." Toulouse, ENSAE, 1985. http://www.theses.fr/1985ESAE0005.
Acco, Pascal. "Etude de la boucle à verrouillage de phase par impulsions de charge : prise en compte des aspects hybrides." Toulouse, INSA, 2003. http://www.theses.fr/2003ISAT0029.
This thesis proposes a study of the stability of the Charge-Pump Phase Locked Loop (CP-PLL). Performances of the transient response of this circuit explains its large use in industrial design. Although the CP-PLL is an hybrid circuit (discrete time part coexists with continuous time parts), signals are represented and analysed by linear models. As there is no others results, stability limits of these linear models are steel used in the industry. Non-linear models can be found in the literature, these models offer high precision results but no analysis tool involving these non-linear models has been proposed. Using hybrid formalism to rewrite non-linear models, we can apply new results on hybrid stability to achieve this first stability proof based on exact waveforms. A piece-wise non-linear model of the CP-PLL can be studied by linearising each non-linear vector field around the fixed point of interest. A theorem is proposed to deduce the local stability of the non-linear system from its linearisation. Stability test is expressed by linear matrix inequalities (LMI). Using the S-procedure to relax conditions in well-chosen region we reduce drastically the conservatism of the sufficient proof. By this way we propose a new stability condition which is less restrictive than linear systems ones. Experimental results tend to confirm this new stability frontier
Bouloc, Jeremy. "Système de contrôle pour microscope à force atomique basé sur une boucle à verrouillage de phase entièrement numérique." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4307/document.
An atomic force microscope (AFM) is used to characterize insulating materials or semiconductors with a resolution up to the atomic length scale. The microscope includes a force sensor linked to a control electronic in order to properly characterize these materials. Among the various modes (static and dynamic), we focus mainly on the dynamic mode and especially on the frequency modulation mode (FM-AFM). In this mode, the force sensor is maintained as a harmonic oscillator by the servo system. The research project ANR Pnano2008 entitled: "metal piezoresistivity silicon carbide cantilever for very high frequency dynamic AFM" aims to significantly increase the performance of a FM-AFM by developing new very high frequency force sensors. The goal is to increase the sensitivity of the sensor and to decrease the time necessary to obtain topography images of the material. The control system of this new sensor must be able to detect frequency variations as small as 100mHz for cantilevers with resonance frequencies up to 50MHz. Since the state-of-the-art systems doe not present these performances, the objective of this thesis was to develop a new control system. It is fully digital and it is implemented on a FPGA based prototyping board. In this report, we present the system overall functioning and its main features which are related to the cantilever resonant frequency detection. This detection is managed by a phase locked loop (PLL) which is the key element of the system
Lagutere, Thierry. "Conceptions et modélisations d'oscillateurs et de leurs boucles à verrouillage de phase associées pour des applications de radiocommunications mobiles professionnelles." Poitiers, 2005. http://www.theses.fr/2005POIT2266.
The topic of this thesis is designing and modelling oscillators for professional mobile phones applications. A first study is carried out with a view to designing on silicon the best circuit using standard CMOS technology. The conclusions of this study lead to the choice of an oscillator using a LC resonator. A design method to achieve better phase noise performances with this schematic is also described. The measurement results both corroborate the methodology and validate the circuit. Therefore, future components involving a change of technology will include the same circuit structure. To increase furthermore the design speed and ease the simulation convergence, a Verilog-A model allowing faster phase noise simulations is conceived. This model uses mainly technology properties as parameters. A VHDL-AMS model is developed using this Verilog-A model to simulate the whole receiving chain with a standard language
Susplugas, Olivier. "Applications des boucles à verrouillage de délais à la synthèse de fréquences dans les circuits pour communications mobiles." Phd thesis, Télécom ParisTech, 2003. http://pastel.archives-ouvertes.fr/pastel-00000619.
Akrout, Akram. "Contribution à l’étude des lasers à verrouillage de modes pour les applications en télécommunications." Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2009. http://www.theses.fr/2009TELE0023.
This PhD thesis deals with the integration of InP based quantum dash mode locked lasers for use in optical communication systems and microwave optoelectronic applications. The properties of pulse and characterization methods are described as well as requirements for application in communication systems. Experimental and analytic method for pulse “chirp” characterization and compensation are also discussed. In particular, we demonstrate that high order dispersion can be compensated using specific fibre length. The characterization of quantum dash based mode locked lasers, has shown their potential to generate high spectral purity self-pulsating signals, with state-of-the-art spectral linewidth of ~ 850 Hz. Especially, the importance of, and way to reduce high-frequency jitter is discussed. Indeed, a novel method for measurement of high-frequency jitter based on optical cross-correlation technique is implemented. Systematic investigation of 10 GHz passively mode locked laser based on InAs/InP quantum dashes emitting at 1.55 µm have demonstrated a reduced value of timing jitter of 500 fs in the 150 kHz – 320 MHz frequency range. Compared to typical passively mode-locked quantum well laser which exhibit timing jitter in the range 12 ps (150 kHz – 50 MHz), our device demonstrates an approximately 25 times improvement in timing jitter. Concerning microwave optoelectronic applications, we demonstrate that a low phase noise oscillator can be obtained using a QD MLL integrated in an optical self injection loop without any opto-electronic or electro-optic conversion. A significant reduction of the -3 dB linewedith as low as 200Hz was obtained thanks to optimised tuning of the optical external cavity length. The phase noise has been reduced from -75dBc/Hz to a level as low as -105dBc/Hz at an offset of 100kHz. This yields to ultra low timing jitter and shows the potential to fabricate simple, and yet low noise oscillators based on semiconductor lasers without any high frequency electronics, photodetector or modulator. Finally, we report, for the first time, error-free transmission of 8 WDM channels over 50 km long single mode fiber at 10 Gbit/s using comb-generation in a quantum dash based mode locked laser. Such good performance paves the way for the use of mode locked-lasers in WDM transmission and allows considering such a solution in an integrated WDM transceiver
Susplugas, Olivier. "Applications des boucles à verrouillage de délais à la synthèse de fréquences dans les circuits pour communications mobiles." Phd thesis, Ecole nationale supérieure des telecommunications - ENST, 2004. http://tel.archives-ouvertes.fr/tel-00005765.
Le premier des synthétiseurs multiplie la fréquence d'un signal de référence par un nombre entier. Si le principe utilisé est déjà étudié depuis quelques années, nous proposons une formulation plus fine de ses performances en bruit et en particulier, nous précisons le spectre de bruit de phase du signal de sortie attendu. Et, nous proposons son application comme oscillateur local de fréquence intermédiaire fixe dans une structure hétérodyne pour GSM.
Le second synthétiseur de fréquences est d'une architecture originale. Il permet d'obtenir une horloge dont la fréquence est programmable et équivaut à la fréquence du signal de référence multipliée par un nombre rationnel. La formulation de la théorie de cette nouvelle fonction est établie, et les résultats des tests d'un circuit prototype, commentés. Ses performances lui permettent d'être utilisé comme horloge dans des systèmes de communications mobiles comme cela a pu être démontrer pour une application Bluetooth.
Jay, Jacques. "Système de télémesure de paramètres physiologiques chez l'homme : application à la mesure de la température centrale." Saint-Etienne, 1990. http://www.theses.fr/1990STET4001.
Akrout, Akram. "Contribution à l’étude des lasers à verrouillage de modes pour les applications en télécommunications." Thesis, Evry, Institut national des télécommunications, 2009. http://www.theses.fr/2009TELE0023/document.
This PhD thesis deals with the integration of InP based quantum dash mode locked lasers for use in optical communication systems and microwave optoelectronic applications. The properties of pulse and characterization methods are described as well as requirements for application in communication systems. Experimental and analytic method for pulse “chirp” characterization and compensation are also discussed. In particular, we demonstrate that high order dispersion can be compensated using specific fibre length. The characterization of quantum dash based mode locked lasers, has shown their potential to generate high spectral purity self-pulsating signals, with state-of-the-art spectral linewidth of ~ 850 Hz. Especially, the importance of, and way to reduce high-frequency jitter is discussed. Indeed, a novel method for measurement of high-frequency jitter based on optical cross-correlation technique is implemented. Systematic investigation of 10 GHz passively mode locked laser based on InAs/InP quantum dashes emitting at 1.55 µm have demonstrated a reduced value of timing jitter of 500 fs in the 150 kHz – 320 MHz frequency range. Compared to typical passively mode-locked quantum well laser which exhibit timing jitter in the range 12 ps (150 kHz – 50 MHz), our device demonstrates an approximately 25 times improvement in timing jitter. Concerning microwave optoelectronic applications, we demonstrate that a low phase noise oscillator can be obtained using a QD MLL integrated in an optical self injection loop without any opto-electronic or electro-optic conversion. A significant reduction of the -3 dB linewedith as low as 200Hz was obtained thanks to optimised tuning of the optical external cavity length. The phase noise has been reduced from -75dBc/Hz to a level as low as -105dBc/Hz at an offset of 100kHz. This yields to ultra low timing jitter and shows the potential to fabricate simple, and yet low noise oscillators based on semiconductor lasers without any high frequency electronics, photodetector or modulator. Finally, we report, for the first time, error-free transmission of 8 WDM channels over 50 km long single mode fiber at 10 Gbit/s using comb-generation in a quantum dash based mode locked laser. Such good performance paves the way for the use of mode locked-lasers in WDM transmission and allows considering such a solution in an integrated WDM transceiver
Ware, Cédric. "Récupération d'horloge par boucle à verrouillage de phase utilisant le mélange à quatre ondes dans un amplificateur optique à semi-conducteurs." Phd thesis, Télécom ParisTech, 2003. http://tel.archives-ouvertes.fr/tel-00005767.
Après une mise en contexte et quelques généralités sur le principe de fonctionnement desdits boucles de phase et amplificateurs optiques, nous présentons deux systèmes de récupération d'horloge utilisant le mélange à quatre ondes dans ces derniers. Cet effet non-linéaire est observé et étudié, ainsi que les dispositifs de récupération d'horloge, dont le fonctionnement est démontré expérimentalement sur des signaux optiques de type RZ et NRZ à 10 Gbps. Des mesures de taux d'erreurs montrent une pénalité négligeable ; on obtient une bande d'accrochage de l'ordre de quelques dizaines de kilohertz, et une gigue de l'ordre de la picoseconde.
Bien que ce débit ne soit plus très impressionnant de nos jours, ces schémas, reposant sur des effets non-linéaires ultrarapides, peuvent être étendus à une utilisation à des débits beaucoup plus élevés (de l'ordre de plusieurs centaines de gigabits par seconde voire au-delà) et à la récupération d'horloge fractionnelle, pour des applications de démultiplexage temporel. Les expériences correspondantes restent à effectuer, ainsi que l'utilisation de composants non-linéaires à faible bruit tels que les fibres optiques microstructurées et le niobate de lithium périodiquement orienté.
PLOUCHART, JEAN-OLIVIER. "Conception et realisation de circuits mmic a base de transistors bipolaires a heterojonction appliques a la boucle a verrouillage de phase." Paris 6, 1994. http://www.theses.fr/1994PA066229.
Ware, Cédric. "Récupération d'horloge par boucle à verrouillage de phase utilisant le mélange à quatre ondes dans un amplificateur optique à semi-conducteurs /." Paris : École nationale supérieure des télécommunications, 2004. http://catalogue.bnf.fr/ark:/12148/cb39179452r.
Legrand, Fabrice. "Modèles de boucle de poursuite de signaux à spectre étale et méthode d'amélioration de la précision des mesures brutes." Toulouse, INPT, 2002. http://ethesis.inp-toulouse.fr/archive/00000641/.
Gomez, Agis Fausto. "Récupération d'horloge par verrouillage de phase optoélectronique pour les systèmes de communication optique à ultra haut débit utilisant un comparateur de phase ultra-rapide en niobate de lithium." Paris, ENST, 2008. http://www.theses.fr/2008ENST0018.
In the context of ultra-high speed optical communication systems, we are focused on clock recovery, a critical function for signal reception and regeneration. At today, beyond the bit-rate of 160 Gbit/s per channel, electronics PLLs employed to perform such task are difficult to implement. So our interest for all-optical or partially-optical methods. In this work, we explore the potential offered by sum-frequency generation in PPLN waveguides, incorporated in a PLLs as a clock recovery unit for sinusoidally-modulated and ultra-high speed OTDM signals. These nonlinear optical devices provide the functionality of an ultra-fast phase comparator, producing an error signal as a function of the phase difference between the envelopes of two optical signals (the data signal and the optical clock). The relevance of an OEPLL based on PPLN is to demonstrate CR of an ultra-high speed OTDM signals at 640 Gbit/s. Clock extraction successfully achieved, establishes the first demonstration using an ARW-PPLN device at such bit rates and the second CR demonstration at 640 Gbit/s. Additionally, a full 640 Gbit/s transmission experiment (transmission and clock recovery), over a span of 50 km of SMF-IDF fiber is conducted. Successful channel extraction of a 10 Gbit/s tributary is achieved with error-free performance (BER 10^-9) and a power penalty to less than 1 dB. An analytical description and experimental demonstrations of PPLN waveguides as ultra-fast phase comparators for both types of signals are presented. In the same way, CR experiments demonstrating the potential of these devices for the pursued application are provided
HEDAYAT, DARYOUCHE CHRISTIAN. "Modelisation et simulation a haut niveau du fonctionnement et des caracteristiques de la boucle a verrouillage de phase a pompe de charges." Nice, 1998. http://www.theses.fr/1998NICE5252.
Mannino, Christian. "Architecture configurable d'une boucle à verrouillage de phase totalement numérique : application à la mesure de gigue et de la dérive en fréquence en télévision numérique." Nancy 1, 2006. http://docnum.univ-lorraine.fr/public/SCD_T_2006_0171_MANNINO.pdf.
In digital television, the information are transmitted in asynchronous mode within frames. Frequency dispersions or the jitter of the transmitted signal can have a significant effect on reception quality. The work of the thesis presented relates to the study and the characterization of an All-Digital Phase Locked Loop (ADPLL) associated to a set of measurement functions of dispersions and jitter. The designed ADPLL allows the clock recovery by synchronisation on time stamps. The implementation is made possible thanks to the use of an original frequency synthesizer based on a technique of delaying or advancing the phase. The solution is used in a measurement system of jitter, frequency error and drift parameters for the quality of service evaluation in digital terrestrial television (DVB-T). The system is optimised in term of resources to measure the parameters of each program of a DVB-T stream
Mannino, Christian Weber Serge. "Architecture configurable d'une boucle à verrouillage de phase totalement numérique application à la mesure de gigue et de la dérive en fréquence en télévision numérique /." [S.l.] : [s.n.], 2006. http://www.scd.uhp-nancy.fr/docnum/SCD_T_2006_0171_MANNINO.pdf.
Kassa, Wosen Eshetu. "Modélisation électrique de laser semi-conducteurs pour les communications à haut débit de données." Thesis, Paris Est, 2015. http://www.theses.fr/2015PEST1016/document.
The advancement of digital optical communication in the long-haul and access networks has triggered emerging technologies in the microwave/millimeter-wave domain. These hybrid systems are highly influenced not only by the optical link impairments but also electrical circuit effects. The optical and electrical effects can be well studied at the same time using computer aided tools by developing equivalent circuit models of the whole link components such as semiconductor lasers, modulators, photo detectors and optical fiber. In this thesis, circuit representations of the photonic link components are developed to study different architectures. Since the optical light source is the main limiting factor of the optical link, particular attention is given to including the most important characteristics of single mode semiconductor lasers. The laser equivalent circuit model which represents the envelope of the optical signal is modified to include the laser phase noise properties. This modification is particularly necessary to study systems where the optical phase noise is important. Such systems include optical remote heterodyne systems and optical self-heterodyne systems. Measurement results of the laser characteristics are compared with simulation results in order to validate the equivalent circuit model under different conditions. It is shown that the equivalent circuit model can precisely predict the component behaviors for system level simulations. To demonstrate the capability of the equivalent circuit model of the photonic link to analyze microwave/millimeter-wave systems, the new circuit model of the laser along with the behavioral models of other components are used to characterize different radio-over-fiber (RoF) links such as intensity modulation – direct detection (IM-DD) and optical heterodyne RoF systems. Wireless signal with specifications complying with IEEE 802.15.3c standard for the millimeter-wave frequency band is transmitted over the RoF links. The system performance is analyzed based on EVM evaluation. The analysis shows that effective analysis of microwave/millimeter-wave photonics systems is achieved by using circuit models which allows us to take into account both electrical and optical behaviors at the same time
Roubadia, Régis. "Conception de PLL à large bande passante et faible bruit de phase en technologie CMOS submicronique." Montpellier 2, 2007. http://www.theses.fr/2007MON20116.
Sié, Mathilde. "Synthétiseurs de fréquence monolithiques micro-ondes à 10 et 20 GHz en technologies BiCMOS SiGe 0,35 et 0,25 µm." Toulouse 3, 2004. http://www.theses.fr/2004TOU30296.
Nowadays, the development of Silicium/Germanium BiCMOS technologies permits the low-cost integration of complete RF systems onto a single chip. Bipolar transistors of these processes are effectively capable of attaining transition frequencies in the order of tens of GHz, thus insuring the realization of RF domain functions such as amplification, mixing, digital and analog frequency division, digital and analog phase/frequency comparison, etc. In addition, the compatibility of these technologies with existing CMOS technologies allows integration with base band digital (or analog) signal processing. A difficult challenge arises when reconsidering designs of existing architectures to compensate for the relatively poor performance of integrated passive components. One solution consists of digitizing as many functions as possible. The aim of this thesis is to study the feasability of X and K band frequency synthesizers based on a PLL entirely integrated in SiGe technologies. In particular, this work focuses on the digitization of frequency dividers and phase/frequency detectors used in PLLs, while maintaining an analog VCO. Innovative design solutions are proposed to increase the operating frequency while reducing inherent parasitics in commonly used structures. This thesis concludes with the integration of divider and comparator designs with VCO, designed in a previous thesis, to form two frequency synthesizers, one operating at 10 GHz and an other at 20 GHz
SIE, Mathilde. "Synthétiseurs de fréquence monolithiques micro-ondes à 10 et 20 GHz en technologies BiCMOS SiGe 0,25 et 0,35 um." Phd thesis, Université Paul Sabatier - Toulouse III, 2004. http://tel.archives-ouvertes.fr/tel-00010235.
Lewandowski, Grégory. "Nouvelles architectures de sources stables programmables en gamme millimétrique et centimétrique." Lille 1, 2000. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2000/50376-2000-71.pdf.
Wong, King-Wah. "Conception de circuits MMIC BiCMOS SiGe appliqués à la synthèse de fréquence fractionnaire." Toulouse 3, 2003. http://www.theses.fr/2003TOU30238.
Cheynet, De Beaupré Vincent. "Dispositifs à Faible Coût Appliqués à la Synthèse de Fréquences et à la Modulation FSK pour les Systèmes de Radiocommunication." Phd thesis, Université de Provence - Aix-Marseille I, 2008. http://tel.archives-ouvertes.fr/tel-00395267.
Tous les systèmes de communication modernes requièrent un signal périodique stable pour fournir une base de temps nécessaire à la synchronisation, à l'alignement des horloges d'échantillonnage, à la récupération d'horloge ou encore à la synthèse de fréquence. Le verrouillage de phase est une des principales techniques pour répondre à ces besoins.
L'enjeu de ce travail de thèse est de concevoir, réaliser et caractériser une boucle à verrouillage de phase capable de s'intégrer dans un système de télécommunication développé en partenariat entre la société STMicroelectronics et l'Institut Matériaux Microélectronique Nanosciences de Provence (IM2NP). Ce système faible coût, faible consommation, réalisé en technologie CMOS est destiné à des applications de type réseaux personnels sans fils. Des contraintes fortes en terme de surface silicium, consommation, réactivité de la boucle et de précision fréquentielle sont les éléments directeurs de la conception de cette PLL. La boucle réalisée devra être capable de fonctionner en synthétiseur de fréquence et en modulateur FSK. Une attention particulière sera portée à l'oscillateur contrôlé en tension, véritable coeur de la PLL proposée.
Lagareste, Vincent. "Contribution à l'étude de nouvelles architectures de synthétiseur de fréquence." Bordeaux 1, 2006. http://www.theses.fr/2006BOR13230.
This thesis is dedicated to new frequency synthesizer architectures study, located in radio frequency emission and reception chain. The frequency synthesizer generates a frequency allowing the received or emitted signal frequency displacement (by mixer) for its treatment or its emission. There is several type of frequency synthesizer but we will focus on phase locked loop (PLL). The PLL based frequency synthesizer performances are defined by its settling time, noise, consumption and silicon area. This work is broken up into three parts: a new architecture of frequency synthesizer, composite PLL, is presented in the first part. This new architecture aims to increase the frequency synthesizer band-width in order to minimize the voltage controlled oscillator (VCO) constraints in terms of noise. In the second part of the study, a new phase comparator is introduced to obtain a reference frequency higher than the synthesis step with an integer divider. This circuit is designed and measured in STMicroelectronics BiCMOS 0. 25µm technology. Into the third part, the non integer order filter is study to answer, as well as possible, the three major PLL constraints : the band-width, the phase margin and the high frequencies rejection (speed, stability and spectral purity) or to allow the filter silicon integration for the process spread immunity
WONG, Wa. "Conception de circuits MMIC BiMOS SiGe appliqués à la synthèse de fréquence fractionnaire." Phd thesis, Université Paul Sabatier - Toulouse III, 2003. http://tel.archives-ouvertes.fr/tel-00011081.
Lagareste, Vincent. "Contribution à l'étude de nouvelles architectures de synthétiseur de fréquence." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2006. http://tel.archives-ouvertes.fr/tel-00184542.
Mazouffre, Olivier. "Conception de synthèses de fréquences à 24 GHz à base de diviseurs à mémoires D en technologies silicium avancées." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13740/document.
Frequency synthesis is almost used in all RF transceivers, where this function is usually achieved by using phase-locked-loop circuits. Most often, the phase-locked-loop includes digital frequency dividers in the feedback that present high power dissipation and low maximum frequency at gigahertz frequencies. This thesis presents a versatile new D latch-based divider that improves these issues and its application to frequency synthesis. The first part presents several frequency synthesis techniques and theirs main characteristics. Then is described various classical frequency dividers and the proposed new D latch-based SRO divider. A detailed study of the SRO divider is presented with two approaches, the digital one and the analogue one. This study demonstrates the benefit of the SRO divider in terms of power dissipation and speed compared with the widely used D flip-flop based dividers. The last part presents several implementations of the SRO divider in CMOS and BiCMOS processes of ST Microelectronics. Particularly, the SRO divider was implemented in two 24 GHz fractional synthesizers, where it demonstrates its interest for reduction of power dissipation while using small silicon area
Withitsoonthorn, Suwimol. "Photodiode UTC et oscillateur différentiel commande en tension à base de TBdH InP pour récupération d'horloge dans un réseau de transmission optique à très haut débit." Paris 6, 2004. https://tel.archives-ouvertes.fr/tel-00006403v2.
Ali, Ehsan. "Fast and efficient modeling and design methodology of arbitrary ordered mixed-signal PLLs." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4352.
The Charge-Pump Phase Locked Loop (CP-PLL) is a mixed-signal system and the important block for the frequency generation or frequency synthesis in radio frequency communications, instrumentations, metrology, sensors and so on. There are two types of devices: a full digital PLL and an analog PLL. The fully digital PLL is mainly used in instrumentation field and in clock and data recovery circuits where moderate frequency operation is used. For wireless communication or high data-rate optical transceiver analog CP-PLL is the most used architecture where the operating frequency is in the range of GHz. Since a PLL is at least a second order system, it is subjected to an instability that can lead to non-functional device. Thus, common design methodology contains several steps including i) Linear models ii) Behavioral modeling iii) and transistor level simulations. Electrical simulation (like SPICE) of the transient operation of PLL is time consuming and may take up to several weeks. In fact, the simulator must perform, for each time step of the reference signal, calculations where complexity increases with the division factor. This is known as technological bottleneck, designing a PLL at transistor level is very hard in a reasonable time. In this thesis the work is focused on the behavioral modeling of CP-PLL operating with voltage switched charge-pump (VSCP), where the characterization of its transient time “off-locking” and highly non-linear and even in chaotic mode remains a critical issue. The main objective is to establish a fast and efficient modeling and design methodology of high order CP-PLL and its characterization using the event driven technique
Roche, Sébastien. "Méthodes de poursuite de phase pour signaux GNSS multifréquence en environnement dégradé." Thesis, Toulouse, ISAE, 2013. http://www.theses.fr/2013ESAE0047/document.
This thesis aims at introducing multifrequency phase tracking algorithms operating in low C/N0environment. The objective is to develop new structures whose tracking limits are lower than thatof current algorithms used in mass market receivers. Phase tracking suffers from a lack of robustnessdue to the cycle slip phenomenon. Works have thus been focused on elaborating new phaseunwrapping systems. To do so, two different tracking approaches were studied. First, we have developed new monofrequency tracking loops based on a conventional DPLL. These structures aimat predicting the discriminator output by analyzing, thanks to a polynomial model, the last outputsamples of either the discriminator or the loop filter. Once the discriminator output is predicted,the estimated value is pre-compensated so that the phase dynamics to be tracked is reduced aswell as the cycle slip rate. Then, the unwrapping structure analyzing the loop filter outputs hasbeen extended to multifrequency signals. Using a data fusion step, the new multifrequency structuretakes advantage of the frequency diversity of a GNSS signal (i.e., proportionality of Dopplerfrequencies) to improve the tracking performances. Secondly, studies have been focused on developing a new multifrequency tracking algorithm using variational Bayesian filtering technique.This tracking method, which also uses the GNSS frequency diversity, assumes a Markovian phasedynamics that enforces the smoothness of the phase estimation and unwraps it
Valenta, Václav. "Frequency synthesis for cognitive multi-radio." Phd thesis, Université Paris-Est, 2010. http://tel.archives-ouvertes.fr/tel-00597461.
Roy, Nicolas. "Réalisation d'un convertisseur temps-numérique en CMOS 65 nm pour une intégration par pixel dans un module de comptage monophotonique." Mémoire, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/8142.
Agaisse, Romain. "Auto-affinement spectral laser assisté par effet Brillouin." Electronic Thesis or Diss., Université de Rennes (2023-....), 2023. http://www.theses.fr/2023URENS091.
The frequency stability of lasers is a sought-after property in many fields such as optical communications, spectroscopy and time-frequency metrology. In this context, the Foton Institute has developed a principle making it possible to spectrally self-narrow a laser at extremely low levels. For this we pump a non-reciprocal Brillouin resonator which generates a spectrally pure Stokes wave. The addition of a phase-locked loop which counter-reacts to the pump then makes it possible to avoid mode hops of the Brillouin resonator while spectrally narrowing the pump laser, thus producing a cascaded self-narrowing effect. In this manuscript, we theoretically and experimentally study the Brillouin assisted laser spectral self-narrowing system. The modeling of all of its constituents using the formalism of transfer functions is supported by experimental validations. These transfer functions account for the response of the different elements of the system to phase and amplitude fluctuations. The expression of the transfer function of the complete system is then validated experimentally by comparing the theoretical predictions to the open-loop transfer function measurements as well as in step response. Exploitation of the model and its adjustable physical parameters then makes it possible to further reduce frequency fluctuations for a solid-state pump laser emitting at 1.54 μm. This allows us in particular to highlight the fact that the Brillouin resonator in these phase-locking conditions plays the role of an optical reference. The performance of the system is then evaluated by duplicating it and measuring the beat between the two independent systems in the microwave domain. Finally, the “buffer reservoir” principle is added to the spectral narrowing system. This principle based on the insertion of a non-linear absorption mechanism in the pump laser makes it possible to reduce excess amplitude noise at relaxation oscillations by 32 dB. This eliminates the main source of amplitude noise converted into phase noise in the system
Altabban, Wissam. "Conception portable d'une ADPLL pour des applications TV." Phd thesis, Télécom ParisTech, 2009. http://pastel.archives-ouvertes.fr/pastel-00570695.
Wei, Zhaopeng. "Auto-polarisation de la grille arrière pour auto-calibration de cellules analogiques et mixtes en technologie UTBB-FDSOI." Thesis, Université Côte d'Azur (ComUE), 2019. http://www.theses.fr/2019AZUR4033.
In the competition of the miniaturization of integrated electronic circuits, UTBB-FDSOI technologies are better adapted to nanometric sizes, because they can limit the problems due to the random doping variations used in conventional “bulk” transistors and bring a significant improvement in terms of performance and low power design. This thesis is a contribution to the development of novel building blocks for PLL using complementary logic in 28nm UTBB-FDSOI technology. Using this technology, we proposed a complementary inverter based on a pair of back-gate cross-coupled inverters offering a fully symmetrical operation of complementary signals. This design concept can be extended to any digital cells to generate more stable, symmetrical and resilient output signals. First, we designed a fast and efficient ring oscillator composed by four complementary inverters delivering quadrature clocks which oscillation frequency is 7.3GHz. Then using complementary logic and back-gate control structure, we proposed an efficient solution to produce novel structures of VRCO, PFD, Charge pump, divisor etc., which are the key building blocks of high-speed low noise PLLs. All these designs have been simulated and verified using Cadence. Moreover, a test chip of RO, current mirror and VCRO have already been realized in silicon and tested
Akre, Niamba Jean-Michel. "Etude de la synchronisation et de la stabilité d’un réseau d’oscillateurs non linéaires. Application à la conception d’un système d’horlogerie distribuée pour un System-on-Chip (projet HODISS)." Thesis, Supélec, 2013. http://www.theses.fr/2013SUPL0001/document.
The HODISS project, context in which this work is achieved, addresses the problem of global synchronization of complex systems-on-chip (SOCs, such as a monolithic multiprocessor). Since the traditional approaches of clock distribution are less used due to the increase of the clock frequency, increased delay, increased circuit complexity and uncertainties of manufacture, designers are interested (to circumvent these difficulties) to other techniques based among others on distributed synchronous clocks. The main difficulty of this latter approach is the ability to ensure the overall system synchronization. We propose a clock distribution system based on a network of phase-coupled oscillators. To synchronize these oscillators, each is in fact a phase-locked loop which allows to ensure a phase coupling with the nearest neighboring oscillators. We analyze the stability of the synchronized state in Cartesian networks of identical all-digital phase-locked loops (ADPLLs). Under certain conditions, we show that the entire network may synchronize both in phase and frequency. A key aspect of this study lies in the fact that, in the absence of an absolute reference clock, the loop-filter in each ADPLL is operated on the irregular rising edges of the local oscillator and consequently, does not use the same operands depending on whether the local clock is leading or lagging with respect to the signal considered as reference. Under simple assumptions, these networks of so-called “self-sampled” all-digital phase-locked-loops (SS-ADPLLs) can be described as piecewise-linear systems, the stability of which is notoriously difficult to establish. One of the main contributions presented here is the definition of simple design rules that must be satisfied by the coefficients of each loop-filter in order to achieve synchronization in a Cartesian network of arbitrary size. Transient simulations indicate that this necessary synchronization condition may also be sufficient for a specific class of SS-ADPLLs
Akre, Niamba Jean-Michel. "Etude de la synchronisation et de la stabilité d'un réseau d'oscillateurs non linéaires. Application à la conception d'un système d'horlogerie distribuée pour un System-on-Chip (projet HODISS)." Phd thesis, Supélec, 2013. http://tel.archives-ouvertes.fr/tel-00789365.
Hallal, Ayman. "Génération d'ondes millimétriques et submillimétriques sur des systèmes fibrés à porteuses optiques stabilisées." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S005/document.
I report in this manuscript a theoretical and experimental study of a compact, reliable and low cost source of 30 Hz linewidth, continuous and coherent electromagnetic waves tunable from 1 GHz to 500 GHz in steps of 1 GHz. These waves are generated by photomixing two distributed feedback (DFB) laser diodes at 1550 nm which are frequency stabilized with orthogonal polarizations on the same optical fibered Fabry-Perot cavity. I have designed very fast electronic control filters for each laser allowing a 7 MHz servo bandwidth limited by the loop length. I demonstrate phase noise suppressions down to -60 dBc/Hz at 1 kHz and -90 dBc/Hz at 100 kHz offset frequencies from a 92 GHz electrical carrier. I also measure a ~170 kHz frequency drift of the beat note at 10 GHz on the long term over a continuous 7.5 hour locking period. I show an optimized design of an integrated servo loop of few tens of cm length which reduces the phase noise by 18 dB at 1 MHz optical carrier offset frequency and the phase-amplitude couplings in the cavity by a factor of 50 compared to the experimental one. The addition of a third DFB laser phase stabilized on a local oscillator allows the possibility to have continuously tunable source over 1 THz. The continuous wave source also makes it possible to generate fixed repetition rate pico- or femtosecond pulses from highly non-linear and dispersive fibers, replacing the DFB lasers by further stable lasers. I have calculated by simulation 7.2 fs temporal jitter at 40 GHz repetition rate over a 1 ms integration time
Maxin, Jérémy. "Oscillateurs optoélectroniques largement accordables et faible bruit pour les applications radar." Toulouse 3, 2014. http://thesesups.ups-tlse.fr/2727/.
The objectives of this thesis is the developement of two optoelectronic oscillator architectures dedicated to the generation of low noise microwave signals for radar applications. The first oscillator is based on the stabilization of the beatnote of a widely tunable dual-frequency laser with an optical fiber delay line. A fine analysis of the stabilization loop implemented with a 100 m long optical fiber allowed us to reach the technical limit fixed by the loop microwave amplifiers. The oscillator is tunable from 2. 5 to 5. 5 GHz by 2 MHz steps and present a phase noise power spectral density of -105 dBc/Hz at 10 kHz offset from the carrier (performance independent of the carrier frequency). The use of two optical fibers in a double delay lines architecture and of a fiber ring resonator as a delay line are also investigated. The second architecture developed is a coupled optoelectronic oscillator (COEO). The architecture, similar to a regenerative mode-locked laser, is realized by coupling a resonant laser cavity to a resonant optoelectronic loop. The developpement of this oscillator is based on a new architecture of SOA : an asymmetrical cladding semiconductor optical amplifier. This component offers better saturation power and lower intrinsic noise than the classical design. The COEO operates around 10 GHz. A phase noise power spectral density of -135 dBc/Hz is measured at 10 kHz offset from the carrier
Houdebine, Marc. "Contribution pour l'amélioration de la robustesse et du bruit de phase des synthétiseurs de fréquences." Phd thesis, Grenoble INPG, 2006. http://tel.archives-ouvertes.fr/tel-00137092.
Juyon, Julien. "Contribution à la conception de synthèses de fréquence pour liaison satellite embarquée : montée en résolution et réduction des raies parasites." Phd thesis, Université Paul Sabatier - Toulouse III, 2013. http://tel.archives-ouvertes.fr/tel-00956651.
Jhaidri, Mohamed Amine. "Techniques de synchronisation à très faible SNR pour des applications satellites." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0038/document.
In deep space communication systems, the long distance between the spacecraft and the ground station along with the limited capacity of the on-board power generator result a very low signal to noise ratio (SNR). However, such transmission still possible by using near Shannon limit error correction codes (Turbo code and LDPC code). Nevertheless, to take advantage of this coding gain, the coherent demodulation is mandatory, and the carrier phase synchronization must be reliable at more restrictive SNR. At very low SNR, current synchronization systems are limited and unable to provide the required performances. Our goal is to improve the reliability of the receiver synchronization stage under very difficult conditions of a very low SNR, a variable Doppler effect (Doppler rate) and a blind transmission. This thesis deals with the problem of carrier phase synchronization for the downlink of a Deep Space transmission. After the study of the existing solutions, we selected the phase locked loop (Phase Locked Loop: PLL). In an industrial context, PLL offers the best trade-off between complexity and performance. Several phase detectors based on the maximum likelihood criterion were considered and characterized by their S-curves. Based on the equivalent models, we have developed a new study of the non-linear acquisition phase of a second-order PLL with a semi-sinusoidal phase error detector. The second part of the thesis was dedicated to the antennas combining techniques. These methods aim to improve the link budget of the transmission and offer more flexibility. At the end of this part, we proposed a new antennas combining scheme that improves the operating threshold of existing systems
Saalaoui, Jad. "TRANSFERT DE FRÉQUENCE DE RÉFÉRENCE MÉTROLOGIQUE PAR FIBRE OPTIQUE : APPLICATION À L' ÉLABORATION D'UNEÉCHELLE DE TEMPS." Phd thesis, Université de Franche-Comté, 2005. http://tel.archives-ouvertes.fr/tel-00011172.
Dans ce cadre, nous avons développé et testé trois dispositifs d'asservissement qui permettent de corriger les fluctuations de phase des signaux qui transitent dans la fibre optique. Ces trois systèmes sont ensuite comparés en termes de performances, de stabilité et de leurs limitations respectives.
Une des applications concrètes de ce système, consiste à réaliser une horloge composite tirant profit des meilleures stabilités accessibles, utilisant un oscillateur à quartz synchronisé simultanément sur une horloge à césium et un maser à hydrogène. La méthode proposée est originale et est basée sur une boucle à verrouillage de fréquence (FLL).
Enfin, nous avons proposé une réalisation physique d'une échelle de temps en intégrant les données de BIPM dans notre algorithme.