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. 01, 2003
Filed:
Mar. 02, 2001
Kent Falk, Mölnlyce, SE;
Ingmar Karlsson, Källered, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
An antenna element ( ), comprising a wave-guide ( ) comprising a number of slots ( ) being pairwise arranged, preferably at 90 degrees to one another and +/−45 degrees to the longitudinal direction of the waveguide has been described. The antenna element is coupled to a feeder ( ) for providing a first wave inside the wave-guide (W_a) The antenna element comprises at least one amplitude and phase control unit (APC, ) for controlling the phase and amplitude of a reflected or separately provided second wave (W_b) in relation to the first wave, the second wave propagating inside the wave-guide in an opposite direction to the first wave (W_a), whereby the polarization of an emitted or received wave (W) outside the wave-guide can be controlled. Moreover, a transceiver ( ) adapted for controlling the polarization modes and a method for operating such a transceiver has been described.