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. 01, 2020
Filed:
May. 26, 2016
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Henrik Jidhage, Mölndal, SE;
Christer Engdahl, Särö, SE;
Telefonaktiebolaget LM Ericsson (Publ), Stockholm, SE;
Abstract
A method () of calibrating an antenna system () comprising a number of antenna elements is provided. The method () is performed in a control device () and comprises transmitting () a signal from a first reference antenna element selected among the antenna elements; measuring () the signal in two or more calibration antenna elements selected among the remaining antenna elements, and obtaining a first set of corresponding number of measurement values; repeating () the transmitting () and measuring () at least for a second reference antenna element different than the first reference antenna element, thereby obtaining a second set of corresponding number of measurement values, calculating () for each calibration antenna element j a correction value (A), based on the at least first and second sets of measurement values, thereby obtaining a correction matrix comprising for row i correction values for calibration antenna elements j relative antenna element k with antenna element i as the reference antenna element; performing () an optimization procedure using as input the correction matrix, wherein each column, except one, is multiplied with a respective constant C, thereby obtaining, for each row of the correction matrix, a respective optimized constant (B); and calculating () a correction value Δtfor each antenna element based on the respective optimized constant (B). A control device, computer program and computer program products are also provided.