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:
Nov. 17, 2020
Filed:
Oct. 07, 2019
Nokia Technologies Oy, Espoo, FI;
NOKIA TECHNOLOGIES OY, Espoo, FI;
Abstract
An apparatus comprising means for: applying beam shape coefficients for obtaining a beam shape output for a linear part of the beam formed by an array of transmitters, each transmitter being associated with a respective transmit path comprising a respective power amplifier; varying the output characteristics of at least one transmit path to increase nonlinear characteristics between the transmit paths to provide a beam shape for a non-linear part of the beam; linearizing the output of the array by: determining linearization coefficients for the array for digitally predistorting the input signal to the array; and applying the linearization coefficients to the signal input to the array; and calibrating the transmitter array by: measuring error distributions over at least two transmit paths; modifying the beam shape coefficients to better obtain the beam shapes subsequent to the linearization; and applying the modified beam shape coefficients to the array of transmitters.