Centre National De La Recherche Scientifique

Centre National Detudes Spatiales

Universite Claude Bernard – Lyon1

Université De Limoges

Ecole Centrale De Lyon

University De Limoges

Centre National De La Recherch

Institut National Des Sciences Appiquees De Lyon

Centre National De La Recherche Scientifique-cnrs

Marc Thevenot

Bernard Jecko

Thierry Monediere

Patrick Dumon

Régis Chantalat

Ludovic Leger

Cyrille Menudier

Hervé Legay

Bernard Jean Yves Jecko

Regis Chantalat

Maxime Romier

Bernard Jean-Yves Jecko

Vlad Marian

Christian Vollaire

Cyril Cheype

Cédric Serier

Alain Jean-Louis Reineix

Alain Reineix

Bernard Jean Jecko

Cedric Serier

This invention relates to an electronic system including a radiative electromagnetic emitter for emitting an activation signal including sequentially an energy supply signal followed by an identification signal, the power of the energy supply signal being at least ten times greater than the power of the identification signal, further including an interface connected to an energy supply source; an electric load; a circuit for deactivating a placing of electric load on standby, including: a receiver including a reception interface, a rectifier configured to generate a DC activation voltage on the basis of an activation signal, a switch configured to selectively connect/disconnect to the load from the energy supply, an identification circuit configured to extract an identifier of the activation signal and configured to apply the activation voltage as closure control signal for turning off the switch if a match of the identifier is determined.

Electronic system comprising a standby mode without electrical consumption

An antenna uses a photonic forbidden band (PFB) material in which, by default, a surface () for injecting and/or receiving electromagnetic waves in a resonance cavity of the antenna () has at least a width or a length of a diameter higher than or equal to the wavelength of the working frequency.

Antenna using a PBG (photonic band gap) material, and system and method using this antenna

The invention relates to an antenna for transmitting or receiving electromagnetic waves at a working frequency f, that comprises a resonator with a filtering () coating that covers the major portion of the upper face of a reflector () located inside a cavity (), the coating () being capable of removing all the electromagnetic waves having a frequency f, and propagating in a direction parallel to the upper face of the reflector, without removing all the electromagnetic waves having a frequency fand propagating in a direction perpendicular to the upper face of the reflector.

Antenna with resonator having a filtering coating and system including such antenna

A frequency multiband antenna includes a photonic bandgap material having at least one band gap, one single periodicity defect of the bandgap material so as to produce several narrow bandwidths within the at least one band gap of the bandgap material, and an excitation device capable of transmitting and/or receiving electromagnetic waves within the narrow bandwidths.

Frequency multiband antenna with photonic bandgap material

A multibeam antenna includes: a photonic bandgap material () having at least one band gap; at least one periodicity defect so as to produce at least one narrow bandwidth inside the at least one band gap of the photonic bandgap material, and excitation elements (to) for enabling electromagnetic waves to be received inside the at least one narrow bandwidth. The excitation elements are mutually arranged so as to generate radiating spots (to) partly overlapping on one surface of the photonic bandgap material.

Multibeam antenna with photonic bandgap material

A system includes a device for focusing electromagnetic waves, and a multiple-beam antenna. The antenna includes: a photonic bandgap material () having at least one band gap, at least one periodicity defect () of the photonic bandgap material so as to produce at least one narrow bandwidth within the bandgap material, and excitation elements (to) for transmitting and/or receiving electromagnetic waves within the at least one narrow bandwidth, the elements being arranged relative to one another so as to produce overlapping radiating spots.

Multiple-beam antenna with photonic bandgap material

A broadband or multiband antenna for microwaves, optical transmission or mobile telephones in which a reflector plane and at least one radiating element disposed in the vicinity of the reflector plane are provided. An assembly of defective PFB material elements is superposed on the reflector plane and the radiating element. Each defective PFB material element is substantially plane, parallel to the reflector, and presents at least one characteristic of magnetic permeability, of dielectric permittivity, and/or of thickness in the direction perpendicular to the reflector that differs from one defective PFB material element to another. The assembly forms a leaky resonant cavity.

Broadband or multiband antenna

An antenna includes a probe capable of transforming electrical energy into electromagnetic energy and inversely. It further includes an assembly of elements made of at least two materials different in permittivity and/or permeability and/or conductivity within which the probe is arranged, the arrangement of the elements in the assembly ensuring radiation and spatial and frequency filtering of the electromagnetic waves produced or received by the probe, which filtering allows in particular one or several operating frequencies (f) of the antenna inside a frequency band gap (B).

Antenna provided with an assembly of filtering materials

The invention provides a reflector forming a parabolic antenna, the reflector being characterized by the fact that it is made up of n contiguous layers of dielectric material defined by n&plus;1 surfaces having distinct parabolic equations and shaped to define a common electromagnetic focus.

Laminated dielectric reflector for a parabolic antenna

Growing community of inventors

Peyrilhac, France

Marc Thevenot