Etablissement Public De Diffusion Dit 'telediffusion De France'

Establissement Public De Diffusion Dit 'telediffusion De France'

L'etat Francais, Represente Par Le Ministre Des Ptt (cnet)

L'etat Francais, Represente Par Le Secretaire D'etat Aux Postes Et Des a

Claude J Vinatier

Gerard Dubost

Jean-Christophe M Bayetto

An antenna array with circular symmetry made up of an array of cylindrica shaped printed circuit elementary antennas. It is made up of small radiating sources which are placed in superposed circles on a cylindrical surface. The sources are distributed at constant angular intervals on the circles. They have little coupling between themselves. On each circle of sources, they are energized in phase and with the same amplitude. An angular phase shift can be provided between the group of sources on a circle and those of another circle. The antenna can be energized by a three-layer printed circuit line. It can be made up by an array of doublets folded into sheets. Inside the cylinder the transmitter is installed to which is applied a signal to be transmitted and which supplies the modulated carrier to the array of radiating sources.

Omnidirectional cylindrical antenna

The invention relates to doublet plates and the method of making them so t they may operate at very high frequencies.

Growing community of inventors

Rennes, France

Claude J Vinatier