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Academic literature on the topic 'Test hyperfréquence'
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Dissertations / Theses on the topic "Test hyperfréquence"
Lahbib, Imène. "Etude, conception et caractérisation de solutions d’auto-test intégrées pour des applications micro-ondes." Caen, 2014. http://www.theses.fr/2014CAEN2044.
Full textThis thesis deals with the study of innovative integrated solutions for low-cost industrial RF test. After a state of the art in this field, a fully integrated BIST circuit for a satellite receiver, operating around 20 GHz, was designed, fabricated and characterized. This circuit is composed of an integrated RF generator, an in-situ coupler and a detector. The generator is used to inject a known signal at the input of the circuit under test (DUT). The detector, placed on the IF side, turns the RF output signal of the DUT on a DC one, easily measurable. To connect the BIST generator to the DUT, without degrading RF performances of the DUT, a capacitive coupler is placed between these two circuits. Measurements have shown a good correlation with simulations. Both show that the BIST circuit provides the gain and the point of compression of the DUT with an accuracy similar to that of RF testers (± 1dB) and without degrading the performances of the DUT. The advantages of this test technique are reducing test time and equipment cost, simplifying the test procedure and standardizing it. So, this thesis gives new perspectives for industrial low cost test for very high frequencies applications by allowing to further research in this field, particularly, by including statistical analyses
Abessolo, Bidzo Dolphin. "Méthodologies de test pour la caractérisation radiofréquence et hyperfréquence de composants microélectroniques avancés et systèmes intégrés en vue de leur modélisation et du contrôle non destructif." Caen, 2007. http://www.theses.fr/2007CAEN2038.
Full textThis PhD dissertation is devoted to the study of test methodologies for RF and microwave characterization of microelectronics components and integrated circuits. Traditionally, this type of characterization is performed in the frequency domain. This manuscript highlights that time domain analysis should not be kept away from RF characterization flow. The first part of this paper reviews various calibration techniques and de-embedding methods for on-wafer RF and microwave characterization. In the second part, the use of time domain reflectometry (TDR) is developed. After a brief recall of TDR principle, this non-destructive testing methodology is successfully applied to detect, to identify and to localize electrical failures in complex integrated circuits packages. Then TDR is use to solve signal integrity problems in printed circuit boards (PCBs). A novel RF characterization approach, time domain gating (TDG) is also presented. Digital signal processing (DSP) permits convenient implementation of the Fast Fourier Transform (FFT) known as the chirp Z Transform in modern vector network analyzers. Thus, S-parameters parasitic elements are removed after applying the best adapted time domain gate to raw data and converting back to frequency domain. Finally, the last part of this thesis deals with RF characterization with the aim to extract RF models of passive devices. This study shows that test structures have a great impact on the measurements of an intrinsic device under test (DUT) even after de-embedding, so that to match test structures and improve their optimization, prior electromagnetic simulations are necessary. The measurements are in good agreement with simulations
Maksimovic, Ivan. "Développement d'une horloge à atomes froids spatiale : le projet PHARAO." Paris 7, 2005. http://www.theses.fr/2005PA077151.
Full textDubois, Tristan. "Etude de l'effet d'onde électromagnétiques sur le fonctionnement de circuits électroniques - Mise en place d'une méthode de test des systèmes." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2009. http://tel.archives-ouvertes.fr/tel-00931378.
Full textPortala, Jean-François. "Caractérisation du bois par intercorrélation de mesures multi sensorielles." Vandoeuvre-les-Nancy, INPL, 1992. http://www.theses.fr/1992INPL118N.
Full textBen, Naceur Walim. "Evaluation des solutions d'encapsulation quasi-hermétique pour les composants actifs hyperfréquences." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2013. http://tel.archives-ouvertes.fr/tel-00991023.
Full textBen, Naceur Walim. "Evaluation des solutions d’encapsulation quasi-hermétique pour les composants actifs hyperfréquences." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR14793/document.
Full textMicrowave devices for satellite applications are encapsulated in hermetic packages as metal or ceramic housings. The strong improvement of organic materials, especially outgassing and ionic impurity characteristics, makes it possible to use them as non-hermetic packaging solutions for space environment. Plastic encapsulations open proven gain perspectives of miniaturization and cost. The validation of an encapsulation technology is based on the achievement of standard reliability tests, typically 1000 hours at 85°C and 85% of relative humidity. Such tests are applicable regardless of the mission storage profile, devices and packaging technology. Moreover, the conditions of these tests are not clearly defined, e.g. the application or not of a strong electric field to the component. Yet this single parameter becomes dominant when the conditions are met to allow corrosion mechanisms, e.g. by the presence of condensed water and ionic contamination. This thesis focused on understanding the failure mechanisms that can occur during accelerated aging tests in high temperature and high humidity environment. For this work, a methodology has been implemented to establish DC electrical signatures of two different AsGa MMIC technologies. These tests were replicated on components with and without encapsulation by a silica-filled epoxy resin, dispensed by the dam-and-fill process. Thus, it was possible to distinguish failures due to the intrinsic degradation of the components from the effective protection or not of the plastic encapsulation. In parallel, the behavior of resin samples under different moist and heat atmospheres has been tested and a modeling was proposed to predict their moisture uptake. Concerning the effect of the dam-and-fill encapsulation technology, the results were contradictory and dependent of components batch. These results are to balance by the relatively limited size of the sampling for each test series, with and without encapsulation. Indeed, for the representative technology of this work, the presence of dam&fill encapsulation on a first batch of components has tended on one hand not to avoid nor even to delay the appearance of electric leakage, and on the other hand to aggravate these damages in the point to lead to failures in most of cases. Furthermore, doubts remain on the quality of this batch, especially regarding the passivation. For a second batch of devices with the same technology, an improvement of the humidity resistance was observed for encapsulated devices, compared to bare devices. In the failure analysis process of encapsulated devices, it is not possible to access directly to the observation of a defect at its surface. We therefore sought an alternative to overcome the problems represented by the encapsulating materials. A new approach was proposed. It combined infrared thermography method in hot spot mode, X-ray imaging and optical observations. We first located the defect from the front side of the encapsulated device. Then, the transparency of the AsGa substrate allowed infrared observations by the back side of the component. A relatively rapid and simple methodology was proposed and its feasibility demonstrated
Pothier, Arnaud. "Conception, réalisation et test de micro-commutateurs micro-electromécaniques et application aux circuits hyperfréquences reconfigurables." Limoges, 2003. http://aurore.unilim.fr/theses/nxfile/default/6cf0371e-bf80-4a5b-b4de-07c554a9bbcb/blobholder:0/2003LIMO0058.pdf.
Full textSince few years, the MEMS technology for microwave applications has grown up with the potential to improve the circuit and device performances. Several components have been designed and demonstrate an important reduction of loss and a higher linearity than their main counterparts: the semi-conductor components. This work investigates the MEMS switches design and their integration in tunable microwave systems. Thus, we first present a state of art of this MEMS technology and the MEMS microwave devices. The micromachined switches operation is investigated. The main advantages, drawbacks and some applications where these components could improve the performances are discussed. The second part of this work is dedicated to the mechanical and electromagnetical design of a DC contact switch. The main objective of this work was to realise a reliable component which present good performances. The switch optimisation is presented and discussed with the corresponding mechanical and electric measurements. The last part of this memory addresses the development of new switchable microwave circuit topology including DC contact micro relays. Three applications are discussed; some tunable filters are developed with a high tuning in frequency (22% for the first one and 44% for the other). We also present how to preserve the device losses to a low level, and keep high the quality factor of these systems
Gouédard, Nolwenn. "Susceptibilité des composants aux agressions électromagnétiques." Paris 6, 2005. http://www.theses.fr/2005PA066508.
Full textSury, Charlotte. "Localisation et évolution des sources de bruit en basses fréquences de HEMTs GaN sous contraintes électriques." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14245/document.
Full textThe HEMT based on GaN materials are very promising, speaking of performance in power and frequency. The challenge is to develop efficient and reliable GaN based technologies, to intagrate these transistors to power microwave circuits, especially in the telecommunications field and on harsh environment. The work was focused on the study of the location of low frequency noise sources, and their evolution after accelerated life tests. The electrical characterizations were performed on structures made on four different wafers, three based on the AlGaN/GaN heterostructure, and the fourth based on the AlInN/AlN/GaN heterostructure. Thanks to the achieved results, a method for modeling 1/f noise sources, located in the channel and in the ohmic contacts access areas, has been validated. Life tests under electrical stress have been performed to detect DC and excess noise degradation. These degradations are explained by combined effects of trapping and thermal phenomena, with the temperature as an acceleration factor of degradation