Ste D'applications Technologiques De L'imagerie Micro-Onde

The European Union, Represented by the European Commission

Lars Foged

Luc Duchesne

Andrea Giacomini

Marc Le Goff

Jean-Marc Baracco

A stacked multi-band antenna for a satellite positioning system comprises a stack of conductive patches, which are each dimensioned so as to be respectively operative in a dedicated frequency band. An excitation line section comprising pairs of conductive strips is arranged underneath the stack of conductive patches. Each pair of conductive strips is adapted for radiatively coupling to an associate conductive patch of the stack of conductive patches. An RF front end with at least one electric circuit is arranged in a triplate section underneath the excitation line section for operatively connecting the pairs of conductive strips to a satellite positioning receiver. The at least one electric circuit includes filters and amplifiers for respectively filtering and amplifying signals from the pairs of conductive strips, during antenna operation.

Multi-band antenna for satellite positioning system

The present invention relates to an orthogonal-mode junction coupler with an ultrabroad bandwidth or a wavelength waveguide noteworthy in that it includes what is called an external conductor () comprising a cavity () in which a central conductor () extends, said central conductor being electrically isolated at radiofrequencies with the external conductor (), said central conductor () being supplied by supply lines () passing through the external conductor () and emerging in the cavity () of said external conductor ().

Orthogonal-mode coupler of the coaxial type having a branched central conductor

Orthogonal-mode junction coupler with a medium to broad bandwidth for a waveguide () operating at a wavelength &#x3bb;, characterized in that it includes a connector () projecting from the waveguide () and extending between a short circuit () of the waveguide () and a conducting structure () acting as dipole radiating at a wavelength of approximately &#x3bb;/2 excited at its central point by the connector.

Growing community of inventors

Aprilia, Italy

Lars Foged