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Your search keyword '"Laetitia Estagerie"' showing total 10 results
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10 results on '"Laetitia Estagerie"'

1. Planar lossy filters for satellite transponders

Author

Serge Verdeyme, Hervé Leblond, Laetitia Estagerie, Ahmed Basti, Aurelien Perigaud, Stéphane Bila, Ludovic Carpentier, Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Centre National d'Études Spatiales [Toulouse] (CNES), Thales Alenia Space - TAS (Toulouse, France), and Thales (France)

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Filter design, Resonator, Resistive touchscreen, Computer science, Reference design, Flatness (systems theory), Electronic engineering, Insertion loss, Stopband, Lossy compression, ComputingMilieux_MISCELLANEOUS, [SPI.TRON]Engineering Sciences [physics]/Electronics
Abstract

Several designs of lossy filters for receivers in satellite transponders have been investigated in order to improve the performance in terms of flatness compared to a classical hairpin filter design. Flatness and insertion loss performances for all solutions are summarized. The reference design is a microstrip filter made of coupled hairpin resonators. Two approaches have investigated for improving the flatness of the reference design. Lossy filter designs have been compared to the reference, considering the same specifications and the same technology. An in-line network with resistive cross-couplings and a transversal network with heterogeneous Q resonators have been designed and fabricated first. Theoretically, the transversal network leads to better performances in terms of flatness, but its implementation is generally difficult, especially considering the input/output junctions between multiple paths, which are naturally dispersive, causing spurious transmissions in the stopband. Moreover, a Monte Carlo analysis has been performed, showing higher sensitivity of this later solution with respect to manufacturing tolerances. Consequently, considering measured performances, in-line networks with resistive cross-couplings appear to be the best solution for implementing our receiver filter. In particular, the version with two RCCs appears as a good compromise between flatness and insertion loss. Finally, the in-line network has been transformed introducing non-resonant nodes and additional resistive cross-couplings in order to design absorptive lossy filters. The resulting filters allow attenuating the reflected wave substantially with a reduced impact on the absolute level of losses.

Published
2019
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2. Miniaturized C-Band SIW Filters Using High-Permittivity Ceramic Substrates

Author

Abbas El Mostrah, Cédric Quendo, Benjamin Potelon, Pascal Moroni, Laetitia Estagerie, Jean-François Favennec, Michel Le Coq, Eric Rius, Barbara Bonnet, Lab-STICC_UBO_MOM_DIM, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Lab-STICC_ENIB_MOM_DIM, Centre National d'Études Spatiales [Toulouse] (CNES), Thales Alenia Space (TAS), THALES, and Elliptika

Subjects
Permittivity, Materials science, 02 engineering and technology, Industrial and Manufacturing Engineering, Microstrip, law.invention, Planar, substrate integrated waveguide (SIW), law, 0202 electrical engineering, electronic engineering, information engineering, Ceramic, Electrical and Electronic Engineering, Coupling, business.industry, Coplanar waveguide, 020208 electrical & electronic engineering, Electrical engineering, 020206 networking & telecommunications, [SPI.TRON]Engineering Sciences [physics]/Electronics, Electronic, Optical and Magnetic Materials, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Filter (video), visual_art, High-K ceramic substrates, visual_art.visual_art_medium, Optoelectronics, business, Waveguide, microwave filters
Abstract

This paper introduces an effective way to build efficient miniature C-band filters using high-permittivity ceramics. The objective was to evaluate the feasibility of such filters using commercial electromagnetic simulators and a conventional fabrication process. For the demonstration, the substrate integrated waveguide (SIW) technology was chosen. Compared with planar solutions, this configuration offers good quality factors and good electrical performances as a consequence. However, its dimensions are large, leading to unacceptably large footprints for many applications. The solution proposed in this paper is based on a ceramic substrate with a permittivity of 90, which allowed us to work with shorter wavelengths. In comparison with a standard alumina substrate (permittivity $\varepsilon _{r}= 9.9$ ), this approach makes it possible to reduce the footprint up to nine times. Two prototypes were realized on a Trans-Tech ceramic substrate ( ${\rm thickness}=635~\mu \text{m}$ , $\varepsilon _{r} = 90$ , and tan $\delta = 9\cdot 10^{-4})$ . The first prototype is a folded sixth-order SIW filter including a cross coupling combining coplanar waveguide probes and a thin microstrip line on an InterVia substrate. The second one is a folded eighth-order SIW filter without cross couplings. Here, we compare the sixth-order prototype with an identical one built on alumina. The eighth-order filter, which had no alumina counterpart, is a potentially useful alternative for situations where complex technological steps must be avoided.

Published
2015
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3. A dual-mode high-Q tunable filter reconfigured by cavity rotation

Author

Dominique Baillargeat, Laetitia Estagerie, Serge Verdeyme, Aurelien Perigaud, Olivier Tantot, Stephane Bila, Hussein Ezzeddine, Jérôme Puech, Nicolas Delhote, Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), and Centre National d'Études Spatiales [Toulouse] (CNES)

Subjects
Waveguide filter, Materials science, business.industry, Physics::Optics, 020206 networking & telecommunications, 02 engineering and technology, Distributed element filter, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Band-pass filter, Filter (video), 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Optoelectronics, Prototype filter, Center frequency, business, m-derived filter, ComputingMilieux_MISCELLANEOUS, Microwave cavity
Abstract

This paper proposes a new solution for implementing high-quality-factor tunable filters, suitable for high-power handling. The dual-mode filter is realized with a cylindrical cavity, which comprises metallic lugs and is loaded by a dielectric element. The center frequency is tuned between two states, by adjusting mechanically the position of the lugs within the cavity. The lugs allow modifying the capacitive effect between the dielectric element and the cavity for adjusting the resonant frequency.

Published
2017
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4. Compact diplexers and triplexers implemented with dual-mode cavities

Author

Hussein Ezzeddine, Stephane Bila, Serge Verdeyme, Fabien Seyfert, Damien Pacaud, Laetitia Estagerie, Jérôme Puech, MINACOM (XLIM-MINACOM), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Analysis and Problems of Inverse type in Control and Signal processing (APICS), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Thales Alenia Space [Toulouse] (TAS), THALES [France], Centre National d'Études Spatiales [Toulouse] (CNES), Thales Alenia Space (TAS), THALES, and Bila, Stéphane

Subjects
010302 applied physics, Computer science, Dual mode, 020206 networking & telecommunications, 02 engineering and technology, Network topology, 01 natural sciences, [SPI.TRON] Engineering Sciences [physics]/Electronics, [SPI.TRON]Engineering Sciences [physics]/Electronics, law.invention, Resonator, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Electrical and Electronic Engineering, Diplexer, Waveguide, Manifold (fluid mechanics), ComputingMilieux_MISCELLANEOUS
Abstract

In this paper, the design of compact diplexers and triplexers with dual-mode cavities is presented. Such devices are composed of coupled resonators without additional waveguide element, leading to a more compact architecture. Two topologies of compact diplexers are implemented and compared to a standard manifold diplexer. A hardware prototype is fabricated and measured for experimental verification. A compact triplexer is finally introduced for extending the concept to more than three ports.

Published
2011
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5. Design of microstrip lossy filters for receivers in satellite transponders

Author

Serge Verdeyme, Hervé Leblond, Ahmed Basti, Stephane Bila, Laetitia Estagerie, Aurelien Perigaud, Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), and Centre National d'Études Spatiales [Toulouse] (CNES)

Subjects
010302 applied physics, Waveguide filter, Engineering, Radiation, business.industry, 020206 networking & telecommunications, 02 engineering and technology, Distributed element filter, Condensed Matter Physics, 01 natural sciences, Composite image filter, Microstrip, [SPI.TRON]Engineering Sciences [physics]/Electronics, Filter (video), 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Prototype filter, Electrical and Electronic Engineering, business, Electronic filter, m-derived filter, ComputingMilieux_MISCELLANEOUS
Abstract

This paper compares several designs of lossy filters for receiver subsystems in satellite transponders. The reference design is a microstrip filter made of coupled hairpin resonators. Two approaches are investigated for improving the flatness of the reference design. The first approach combines nonuniform quality factor (Q) resonators in a transversal network. The second approach uses an inline network with resistive cross couplings. Lossy filter designs are compared to the reference, considering the same specifications and the same technology. The inline network with resistive cross-couplings is finally modified for designing absorptive filters, which protect the receiver from reflected waves. All filter configurations are fabricated and measured, showing a good agreement with electromagnetic simulations.

Published
2016

6. Modeling and characterization of microwave breakdown at atmospheric pressure in OMUX filters

Author

Kamel Frigui, Stéphane Bila, dominique baillargeat, Alain Catherinot, Serge Verdeyme, Jérôme Puech, Laetitia Estagerie, Damien Pacaud, Hervé Dillenbourg, MINACOM (XLIM-MINACOM), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Axe 2 : procédés de traitements de surface, Science des Procédés Céramiques et de Traitements de Surface (SPCTS), Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National d'Études Spatiales [Toulouse] (CNES), Thales Alenia Space (TAS), THALES, and Bila, Stéphane

Subjects
[SPI.TRON] Engineering Sciences [physics]/Electronics, ComputingMilieux_MISCELLANEOUS, [SPI.TRON]Engineering Sciences [physics]/Electronics
Abstract

International audience

Published
2014

7. Design of a compact hybrid filter using microstrip resonators and surface mounted cavities

Author

Aurelien Perigaud, Laetitia Estagerie, Serge Verdeyme, Stephane Bila, Ahmed Basti, Hervé Leblond, Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Thales Alenia Space - TAS (Toulouse, France), Thales (France), Centre National d'Études Spatiales [Toulouse] (CNES), MINACOM (XLIM-MINACOM), Thales Alenia Space (TAS), and THALES

Subjects
Surface (mathematics), Waveguide filter, Materials science, business.industry, 020208 electrical & electronic engineering, Hybrid filter, Microstrip resonators, 020206 networking & telecommunications, 02 engineering and technology, [SPI.TRON]Engineering Sciences [physics]/Electronics, Optics, 0202 electrical engineering, electronic engineering, information engineering, Prototype filter, business, Coupling coefficient of resonators, Electronic filter, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2014

8. Design of compact and innovative microwave filters and multiplexers for space applications

Author

Jérôme Puech, Fabien Seyfert, Hussein Ezzeddine, Serge Verdeyme, Laetitia Estagerie, Damien Pacaud, Stephane Bila, MINACOM (XLIM-MINACOM), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Analysis and Problems of Inverse type in Control and Signal processing (APICS), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Thales Alenia Space (TAS), THALES, Centre National d'Études Spatiales [Toulouse] (CNES), Thales Alenia Space [Toulouse] (TAS), and THALES [France]

Subjects
Waveguide filter, Engineering, business.industry, Electrical engineering, 020206 networking & telecommunications, 02 engineering and technology, Space (mathematics), Multiplexer, [SPI.TRON]Engineering Sciences [physics]/Electronics, Compact space, Filter (video), 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Prototype filter, Diplexer, business, Microwave
Abstract

International audience; In this paper, an original self-equalized filter and a compact diplexer are presented. New methodologies for synthesizing and designing these devices are introduced. Implementation in dual-mode cavities is preferred since this technology offers compactness and good electrical specifications required for space applications.

Published
2013
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9. Wideband Lithium Niobate FBAR Filters

Author

Ji Fan, Matthieu Chatras, Laetitia Estagerie, Sylvain Ballandras, Lise Catherinot, Florent Bassignot, Eric Lebrasseur, Thomas Baron, Haixia Wang, Philippe Monfraix, Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), MINACOM (XLIM-MINACOM), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), and Centre National d'Études Spatiales [Toulouse] (CNES)

Subjects
Radiation, Materials science, Fabrication, Article Subject, Lithium niobate, Polishing, 020206 networking & telecommunications, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, [SPI.TRON]Engineering Sciences [physics]/Electronics, chemistry.chemical_compound, Resonator, Lapping, chemistry, Band-pass filter, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Electrical measurements, Electrical and Electronic Engineering, Wideband, 0210 nano-technology
Abstract

Filters based on film bulk acoustic resonators (FBARs) are widely used for mobile phone applications, but they can also address wideband aerospace requirements. These devices need high electromechanical coupling coefficients to achieve large band pass filters. The piezoelectric material LiNbO3 complies with such specifications and is compatible with standard fabrication processes. In this work, simple metal—LiNbO3—metal structures have been developed to fabricate single FBAR elements directly connected to each other on a single chip. A fabrication process based on LiNbO3/silicon Au-Au bonding and LiNbO3 lapping/polishing has been developed and is proposed in this paper. Electrical measurements of these FBAR filters are proposed and commented exhibiting filters with 8% of fractional bandwidth and 3.3 dB of insertion losses. Electrical measurements show possibilities to obtain 14% of fractional bandwidth. These devices have been packaged, allowing for power handling, thermal, and ferroelectric tests, corresponding to spatial conditions.

Published
2013
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10. Miniature microstrip filter using high-permittivity ceramic substrates (Er = 90)

Author

Jean-François Favennec, Benjamin Potelon, Eric Rius, Yann Clavet, Alexandre Manchec, M. Le Coq, Laetitia Estagerie, Cédric Quendo, Pascal Moroni, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (UMR 3192) (Lab-STICC), Université européenne de Bretagne - European University of Brittany (UEB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Télécom Bretagne-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Lab-STICC_UBO_MOM_DIM, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Centre National d'Études Spatiales [Toulouse] (CNES), Thales Alenia Space (TAS), THALES, and Elliptika

Subjects
Permittivity, 0209 industrial biotechnology, Materials science, business.industry, Relative permittivity, Tangent, 020206 networking & telecommunications, Topology (electrical circuits), 02 engineering and technology, Dielectric, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, 020901 industrial engineering & automation, Optics, Filter (video), visual_art, 0202 electrical engineering, electronic engineering, information engineering, visual_art.visual_art_medium, Optoelectronics, Ceramic, business, Electrical impedance
Abstract

International audience; This paper presents a C-band planar filter miniaturized through use of high-permittivity substrates to meet the specifications. The drawbacks associated to such substrates are briefly recalled. To overcome them, the filter under study was based on the DBR topology and realized on a high-K commercial substrate. This ceramic has a relative permittivity of 90 and a low dielectric tangent (tanδ

Published
2011
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