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:
Apr. 30, 2013
Filed:
Aug. 17, 2009
Antonius Johannes Matheus DE Graauw, Haelen, NL;
Antonius Johannes Matheus de Graauw, Haelen, NL;
NXP B.V., Eindhoven, NL;
Abstract
An apparatus () for feeding antenna elements of a phased array antenna, comprises: at least two transmission lines () disposed in parallel and operated at a certain frequency as resonators, each of the transmission lines () having a predetermined length dimensioned to be at least approximately an electrical quarter-wavelength of the operating frequency, a plurality of measuring positions provided on the transmission lines () in spacings along the longitudinal direction (x) of the transmission lines, wherein each measuring position on one of the two transmission lines () faces directly a corresponding neighbored measuring position on the other transmission line () and such corresponding measuring positions being adjacent to each other in a direction transverse to the longitudinal direction of the transmission lines () form a measuring position pair, respectively, wherein each of the circuits () detects and amplifies/attenuates the measuring signals from an assigned measuring position pair associated with the transmission lines () for a corresponding longitudinal position as a function of a resonant field in the transmission lines at the respective positions, and further adds the measured and processed signals in order to generate output signals for feeding corresponding antenna elements.