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:
Oct. 25, 2016
Filed:
Nov. 11, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Toshio Kawasaki, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A distortion compensation device for correcting balance between a first branch and a second branch, includes: an adjustment unit that is arranged in an input stage of a first nonlinear amplifier on the first branch and outputs a signal obtained by adjusting a phase and an amplitude of a first branch signal by using a balance correction amount to the first nonlinear amplifier; a first calculation unit that calculates a first inverse distortion characteristic of an entire outphasing amplifier based on an input signal and a combined signal; a second calculation unit that calculates a replica signal of the first branch signal based on the calculated first inverse distortion characteristic, a second branch signal, and the combined signal; and a third calculation unit that calculates the balance correction amount based on the calculated replica signal of the first branch signal and the signal output from the adjustment unit.