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High directivity EBG antenna

Reference

00628-01

Patents status

French patent application FR0608381 filed on September 25th, 2006

Inventors

Thierry MONEDIERE
Patrick DUMON
Bernard JECKO
Marc THEVENOT
Regis CHANTALAT

commercial status

Research agreement, exclusive or non exclusive licenses

Laboratory

XLIM, CNRS, France, http://www.xlim.fr

Description

TECHNICAL DESCRIPTION

This invention permits to enhance the directivity or the bandwith of EBG antenna.

Principle

The invention is based on the fact that the use of a feed of which the surface of injection and\or reception presents a dimension (a width or a length or a diameter) superior to the operating wavelength (l) increases the directivity of antennas with material EBG.

For implementing the invention, the inventors have designed a feed comprising a flared electromagnetic waveguide (claim 3).

BENEFITS

With regards to the anterior EBG antennas, this invention allows better performance characteristics:
=> Enhancement of the directivity keeping the same bandwith
=> Enhancement of bandwith keeping same the directivity
=
Enhancement of the gain
=> Possibility to select the appropriate propagation mode
=> Improvement of the radiation pattern (low side lobs (-35dB), very good main lobe shape)
and the EBG antenna’s benefits as reduced size and good gain.

INDUSTRIAL APPLICATIONS

Antenna useful for:
=> Spatial application: antenna for satellite communication (telephony, TV)
=> Terrestrial application: antenna for LMDS (Local Multipoint Distribution Service)
=> High power microwaves applications

For further information, please contact us (Ref 00628-01)


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