The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2011
Filed:
Nov. 20, 2006
Jean-francois Pintos, Bourgbarre, FR;
Philippe Minard, Saint Medard sur Ille, FR;
Philippe Chambelin, Chateaugiron, FR;
Jean-Francois Pintos, Bourgbarre, FR;
Philippe Minard, Saint Medard sur Ille, FR;
Philippe Chambelin, Chateaugiron, FR;
Thomson Licensing, Boulogne-Billancourt, FR;
Abstract
The invention consists of an antenna array, for the reception of two frequency bands, comprising two pairs of radiating elements and an network for excitation of these elements for the reception of one of the bands. The radiating elements are positioned so as to free the center of the array to allow colocalized reception of the other band. The excitation network comprises hybrid elements so as to introduce a certain phase shift between the radiating elements allowing a dual circular polarization. This network must comply with two constraints: The phase shift introduced between the hybrids must be equal to the phase shift of the hybrid modulo 2integer. and the length of the line Lplaced between the first hybrid Hand the first patch PAis such that it introduces a phase shift equal to π modulo 2integer.