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30.01.2020
11827-01
06.11.2018
Materials – Coating 07293-01
06.11.2018
Materials – Coating 10581-01
06.11.2018
Chemistry / Environment 08758-01
06.11.2018
11127-01
06.11.2018
Environment and Energy 11107-01
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85346-01
Antenna, Photonic band gap (PBG), Wire, Diode, Circle, Bar, Aerial, Parallel, Directivity, Dipole, Multiband
French patent applicaiton FR0350925 filed on November 27th, 2003
Andre DE LUSTRAC
Kouroch MAHDJOUBI
Anne-Claude TAROT
Halim BOUTAYEB
Claude TERRET
Research agreement, exclusive or non exclusive licenses
IEF, CNRS – University of Paris 11 and IETR, CNRS – University of Rennes – Supelec, France, www.ief.u-psud.fr ; www.ietr.org
Scientists from the IEF laboratory (Institut d’Electronique Fondamentale) and from the IETR (Institut d’Electronique et de Télécommunications de Rennes) have merged their capabilities in electromagnetism and systems for developing a new EBG antenna type.
More precisely, the patented invention consists of a electromagnetic band gap (EBG) cylindrical material comprising wires arranged in concentric layers (preferably circle) around the radiating element. The wires comprise serial diodes separated by spaces very smaller than the operational wavelength. The diodes allow creating defects (continuous to discontinuous state i.e reflecting state to a transparent state) in the PBG structure, which control the radiating pattern of the global antenna.
The radiating element is arranged in the middle of the BPG Material structure. The distance between the wire layers and between the diodes along the wires are related to the transmission wavelength of the antenna. The arrangement of the radii (curves), the number of the wave-reflecting wires or bars, and of the switched wires, determine the shape of the beam radiated.
– Control of the direction and of the shape of the radiation pattern;
– Possibility of having one or several controlled radio-electric beams;
– Wide band operating mode (for ex. from 0.9 GHz to 2.1 GHz);
– Low-cost smart antenna;
– DC current control.
For application in the telecommunication domain as for:
– In-door and out-door communication networks;
– Application from GSM to WIMAX;
– Radar for aeronautics in military and civil domains;
– Radio link between carriers.
30.01.2020
11827-01
06.11.2018
Materials – Coating 07293-01
06.11.2018
Materials – Coating 10581-01
06.11.2018
Chemistry / Environment 08758-01
06.11.2018
11127-01
06.11.2018
Environment and Energy 11107-01