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Your search keyword '"Favennec, Jean-François"' showing total 6 results
Start Over Author "Favennec, Jean-François" Topic 0202 electrical engineering, electronic engineering, information engineering
6 results on '"Favennec, Jean-François"'

1. Design Flexibility of SIR Coaxial Resonators for UHF Filters

Author

Alexandre Manchec, Marc Hakim Aouidad, Eric Rius, J.F. Favennec, Favennec, Jean-François, Elliptika, Lab-STICC_ENIB_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), and Lab-STICC_UBO_MOM_DIM

Subjects
Computer science, Coaxial resonators, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, 020208 electrical & electronic engineering, Bandwidth (signal processing), 020206 networking & telecommunications, 02 engineering and technology, [SPI.TRON] Engineering Sciences [physics]/Electronics, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Resonator, Ultra high frequency, Band-pass filter, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Coaxial, Center frequency, Electrical impedance, ComputingMilieux_MISCELLANEOUS
Abstract

This paper focus on one particularity of a filtering coaxial architecture, allowing to satisfy the same requirements in terms of central frequency and bandwidth with various dimensions. The filtering architecture is based on miniature two-section Stepped Impedance Resonators (SIR) built from air-filled coaxial structures fitted inside one another. The SIR effect is a freedom degree allowing to adjust on demand, the global size of the resonators and thus of the filters. In order to illustrate the concept, two UHF 2nd-order bandpass filters, with a strong contrast of dimensions are designed, fabricated, measured and compared.

Published
2019

2. Principle Demonstration of a Mechanically Tunable UHF Bandpass Filter Based on SIR Coaxial Resonators

Author

Alexandre Manchec, Eric Rius, J.F. Favennec, Fabien Le Borgne, Jessica Benedicto, Kilian Donnart, Ludovic Carpentier, Favennec, Jean-François, 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, Elliptika, and Centre National d'Études Spatiales [Toulouse] (CNES)

Subjects
Physics, HFSS, Acoustics, Coaxial resonators, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, 020208 electrical & electronic engineering, Bandwidth (signal processing), 020206 networking & telecommunications, 02 engineering and technology, [SPI.TRON] Engineering Sciences [physics]/Electronics, [SPI.TRON]Engineering Sciences [physics]/Electronics, Third order, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Ultra high frequency, Band-pass filter, 0202 electrical engineering, electronic engineering, information engineering, Center frequency, Coaxial, ComputingMilieux_MISCELLANEOUS
Abstract

This paper describes an original topology of tunable SIR coaxial filter. The proposed solution combines, moving cylinders, and rotating shutters associated with coupling arches. This topology allows the central frequency to sweep on a large frequency range of almost one octave, while controlling the bandwidth. To illustrate the principle, a third order filter was fabricated with an additive manufacturing process. The experimental results are compared with simulated data obtained with HFSS.

Published
2019

3. UHF second order bandpass filters based on miniature two-section SIR coaxial resonators

Author

Yann Clavet, Alexandre Manchec, Jean-François Favennec, Hakim Aouidad, Eric Rius, 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), Elliptika, Lab-STICC_ENIB_MOM_DIM, and Favennec, Jean-François

Subjects
Engineering, 02 engineering and technology, UHF, Resonator, Band-pass filter, 0202 electrical engineering, electronic engineering, information engineering, Electrical and Electronic Engineering, Electrical impedance, Helical resonator, business.industry, Size reduction, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, 020208 electrical & electronic engineering, Electrical engineering, 020206 networking & telecommunications, Coaxial resonator, [SPI.TRON] Engineering Sciences [physics]/Electronics, Conductor, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Ultra high frequency, Cascade, Coaxial, business, Band pass filter, Stepped impedance resonator
Abstract

International audience; This paper describes a concept of stepped impedance resonators (SIR) built from two coaxial structures fitted inside one another. The resonator is built out of a succession of two coaxial sections in cascade, where the ground conductor of the first one is the central core of the next, or vice-versa. An advantageous property of SIR is that they allow a substantial reduction in size, while keeping away the first harmonic and without strongly degrading the quality factor. After describing the theoretical behavior of the resonator, we will then present the specific properties of this approach in second order filter, conceived, and realized in the UHF band. With this example, we will also address flexibility and tunability aspects, which are the other potentially useful properties of the structure. Measurements and simulations are presented and discussed. The architecture resembles a set of two Russian dolls that fit inside one another.

Published
2015
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4. A Tunable Filter Based on Miniature SIR Coaxial Resonators

Author

Hakim Aouidad, Eric Rius, Jean-François Favennec, Yann Clavet, Alexandre Manchec, 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), Elliptika, Lab-STICC_ENIB_MOM_DIM, and Favennec, Jean-François

Subjects
Engineering, 02 engineering and technology, UHF, Resonator, Band-pass filter, 0202 electrical engineering, electronic engineering, information engineering, Bandpass filter, Center frequency, Helical resonator, Diode, business.industry, Size reduction, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, 020208 electrical & electronic engineering, Electrical engineering, Tunability, 020206 networking & telecommunications, Coaxial resonator, [SPI.TRON] Engineering Sciences [physics]/Electronics, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Filter (video), Optoelectronics, Coaxial, business, Varicap, Stepped impedance resonator
Abstract

International audience; This paper presents a method of electric tunability using varactor diodes installed on SIR coaxial resonators and associatedfilters.Usingvaractor diodes connected in parallel, in combination with the SIR coaxial resonator, makes it possible, by increasing the number of varactor diodes, to expand the tuning range and maintain the unloaded quality factor of the resonator. A second order filter, tunable in center frequency, was built with these resonators, providing a very large tuning range.

Published
2015

5. On the Sum of the Reflection and Transmission Coefficient on the Smith Chart and 3D Smith Chart

Author

Andrei A. Muller, J.F. Favennec, Alin Moldoveanu, Esther Sanabria-Codesal, Victor Asavei, Favennec, Jean-François, Lab-STICC_ENIB_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), and 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)

Subjects
Smith chart, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, 020208 electrical & electronic engineering, 020206 networking & telecommunications, 02 engineering and technology, Function (mathematics), [SPI.TRON] Engineering Sciences [physics]/Electronics, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Unit circle, Reflection (mathematics), Inversive geometry, 0202 electrical engineering, electronic engineering, information engineering, Calculus, Point (geometry), Symmetry (geometry), Reflection coefficient, Algorithm, Mathematics
Abstract

International audience; The paper presents in premiere a simple mappingproperty of the sum of the reflection and transmission parametersof reciprocal two port networks. It is proved that although thereflection and transmission parameter may have very complicatedpaths on the Smith chart, their sum will be always moving on theunit circle if the circuit is symmetric and lossless. Further oncesymmetrical losses at the ports occur their sum path will switchon a family of circles through one point. Using inversive geometrywe construct a new function which maps this family of circles inlines on the extended Smith chart. The proposed method forchecking the symmetry uses just two parameters and avoidstesting the phase of the corresponding input and outputparameters. By means of the 3D Smith chart we propose in theend an alternative approach to visualize the parameters.

Published
2015

6. SIW Q-band filters using advanced multilayer PCB technology

Author

A. Le Fevre, W Pessl, E. Schlaffer, D Baudet, M. Brizoux, S. Cadiou, Cédric Quendo, 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), and Favennec, Jean-François

Subjects
Engineering, Fabrication, business.industry, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, 020208 electrical & electronic engineering, 020206 networking & telecommunications, Hardware_PERFORMANCEANDRELIABILITY, 02 engineering and technology, [SPI.TRON] Engineering Sciences [physics]/Electronics, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Printed circuit board, Q band, Hardware_INTEGRATEDCIRCUITS, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, business, Microwave
Abstract

This paper deals with the design of Q-band filters using a low-cost multilayered Printed Circuit Board (PCB) substrate. In order to meet strong electrical specifications, the Substrate Integrated Waveguide (SIW) technique has been used to take profit of the complete build-up of the multilayered PCB. Advanced fabrication techniques of vias and micro-vias have also been developed in this project to implement 4th and 6th-order filters in this technology. The challenge here is to use a standard PCB process to design complex microwave devices that usually require accurate fabrication process and very low tolerances, especially in such frequency ranges. Based on that, two 2.8x8mm² prototypes have been designed, simulated and fabricated on a 1mm-thick PCB made of copper and blend of high performance resin material. Regarding the results of these filters, measured insertion & return losses are in a very good agreement with the simulation while exhibiting high rejections and low footprint.

Published
2014

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