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:
Jan. 23, 2018
Filed:
Dec. 20, 2013
Agence Spatiale Européenne, Paris, FR;
Piero Angeletti, The Hague, NL;
Marco Lisi, Rome, IT;
AGENCE SPATIALE EUROPÉENNE, Paris, FR;
Abstract
A digital beam-forming network for an array antenna having N>1 antenna ports, to be associated to respective antenna elements, and M≧1 beam ports (BP), corresponding to respective antenna beams. The digital beam-forming network comprises a plurality of complex weighting elements interconnected through summing nodes. At least one of the complex weighting elements is connected to either two antenna ports, to be associated with respective antenna elements which are arranged symmetrically with respect to the symmetry axis, or two beam ports corresponding to respective antenna beams pointing toward directions which are symmetrical with respect to the symmetry axis, or both. The digital beam forming network can be a part of an array antenna comprising N antenna elements, Nof which are arranged according to an array pattern having a symmetry axis, Nbeing an even integer different from zero.