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Affichage de 3301 à 3310 sur 16077

  • Chapitre d'ouvrage

6 - Closed loop and stubs

L. Dobrzynski, Housni Al Wahsh, Abdellatif Akjouj, Cécile Ghouila-Houri, Abdelkrim Talbi, Gaëtan Lévêque, El Houssaine El Boudouti

Closed loops with finite open loops attached to the robust zeros of one of their two twin states are the systems investigated in this chapter. Such attached finite loops are called stubs. For simplicity, here only the cases where all the stubs have the same length are considered. This length is...

Photonics, Part one: photonic paths, Elsevier, pp.99-131, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00015-0⟩. ⟨hal-03350849⟩

  • Chapitre d'ouvrage

21 - Layered Photonic Crystals with Left-Handed Materials

Abdellatif Akjouj, El Houssaine El Boudouti, L. Dobrzynski, Bahram Djafari-Rouhani

We theoretically investigate the photonic band structure of layered photonic crystals composed of alternating layers of right- and left-handed materials (RHMs and LHMs). The dispersion curves are mainly studied by assuming that the dielectric permittivity and magnetic permeability are constant in...

Photonics, Part Three: Photonic Materials, Elsevier, pp.587-621, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00032-0⟩. ⟨hal-03360012⟩

  • Ouvrages

Photonics

Leonard Dobrzynski

Photonics, a volume in the Interface Transmission Tutorial Book series, describes the science of photonic transmission properties of the interfaces of composite materials systems and devices. The book's authors review the general analysis methods of interface transmission, give many examples,...

Elsevier, A volume in Interface Transmission Tutorial Book Series, 689 p., 2021, ISBN 978-0-12-819388-4. ⟨10.1016/C2018-0-05409-2⟩. ⟨hal-04085468⟩

  • Article dans une revue

A linearized analog microwave photonic link with an eliminated even-order distortions

Taimur Nazir Mirza, Shyqyri Haxha, Iyad Dayoub

An improved linearized analog microwave photonic link (AMPL) with significant multioctave bandwidth performance is experimentally presented. The proposed AMPL configuration is based on a double dual-parallel Mach–Zehnder modulator and a differential balanced photodetector (BPD). Explicitly, a...

IEEE Systems Journal, 2021, 15 (4), pp.4843 - 4851. ⟨10.1109/JSYST.2021.3051394⟩. ⟨hal-03383630⟩

  • Article dans une revue

A multi-tone high efficient bandwidth system with an eliminated even-order distortions using double dual-parallel Mach-Zehnder modulator

Taimur Mirza, Shyqyri Haxha, Iyad Dayoub

In this paper, a linearization of dual RF channels over a single carrier wavelength is proposed and experimentally demonstrated. Multiple microwave signals with a multi-octave bandwidth are modulated by a double dual-parallel Mach-Zehnder modulator (D-DPMZM) and recovered by a differential balanced...

Results in Optics, 2021, 5, pp.100190. ⟨10.1016/j.rio.2021.100190⟩. ⟨hal-03507869⟩

  • Article dans une revue

Low impedance and highly transparent microelectrode arrays (MEA) for in vitro neuron electrical activity probing

Anna Susloparova, Sophie Halliez, Séverine Begard, Morvane Colin, Luc Buée, Sébastien Pecqueur, F. Alibart, V. Thomy, S. Arscott, Emiliano Pallecchi, Yannick Coffinier

In this study, we present the microfabrication and characterization of a transparent microelectrode array (MEA) system based on PEDOT:PSS for electrophysiology. The influence of the PEDOT:PSS electrode dimensions on the impedance was investigated and the stability over time under physiological...

Sensors and Actuators B: Chemical, 2021, 327, pp.128895. ⟨10.1016/j.snb.2020.128895⟩. ⟨hal-03094481⟩

  • Article dans une revue

Angular characteristics of multipath propagation in an indoor industrial environment

Aliou Bamba, Emmeric Tanghe, Aladji Kamagate, Pierre Laly, Frederic Challita, Adama Konate, Wout Joseph, M. Lienard, Davy Gaillot

The characteristics of multipath components (MPCs) are addressed in an industrial environment at 1.3 GHz by means of measurements with a multidimensional channel sounder. The maximum likelihood estimator, RiMAX, is used to determine the MPCs parameters and takes into account the diffuse scattering...

IET Microwaves Antennas and Propagation, 2021, 15 (7), pp.768-777. ⟨10.1049/mia2.12082⟩. ⟨hal-03346244⟩

  • Communication dans un congrès

High temperature gradient micro-sensors for skin-friction measurement in flow control applications

Cécile Ghouila-Houri, Manon Benedito, Eric Garnier, Abdelkrim Talbi, Aurélien Mazzamurro, Romain Viard, Alain Merlen, Philippe Pernod, Thomas Arnoult, Quentin Gallas

Robust micro machined high temperature gradient calorimetric (HTGC) transducers were designed and developed for flow separation control. Based on thermal principle, the transducers measure the amplitude and the sign of skin friction, making them particularly useful for flow separation detection. A...

2021 Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, DTIP 2021, Aug 2021, Paris, France. ⟨10.1109/DTIP54218.2021.9568681⟩. ⟨hal-03541940⟩

  • Article dans une revue

Any neuron can perform linearly non-separable computations

Romain Cazé

Multiple studies have shown how dendrites enable some neurons to perform linearly non-separable computations. These works focus on cells with an extended dendritic arbor where voltage can vary independently, turning dendritic branches into local non-linear subunits. However, these studies leave a...

F1000Research, 2021, 10, pp.539. ⟨10.12688/f1000research.53961.1⟩. ⟨hal-03408395⟩

  • Communication dans un congrès

Event-Driven Continuous-Time Feature Extraction for Ultra Low-Power Audio Keyword Spotting

S. Mourrane, Benoit Larras, A. Cathelin, Antoine Frappé

In the context of autonomous keyword spotting and sound detection, this paper proposes a low power feature extraction unit generating spectrograms that represent a unique signature allowing the classification of audio signals. This system is composed of a continuous-Time digital signal processing...

3rd IEEE International Conference on Artificial Intelligence Circuits and Systems, AICAS 2021, Jun 2021, Washington DC, DC, United States. pp.9458425, ⟨10.1109/AICAS51828.2021.9458425⟩. ⟨hal-03362267⟩