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. 24, 2019
Filed:
Jun. 08, 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 comprises transmitting and measuring at least for first and second reference antenna elements, thereby obtaining first and second sets of corresponding number of measurement values; calculating, for a first type of beamforming and for each calibration antenna element j a correction value—ΔR, thereby obtaining a first part of a correction matrix; calculating, for a second type of beamforming and for each branch j a correction value ΔR, thereby obtaining a second part of the correction matrix; performing an optimization procedure using as input the correction matrix thereby obtaining, for each row of the correction matrix, a respective optimized constant, and calculating a compensation value Δrfor each antenna element based on the respective optimized constant.