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:
Jul. 27, 2021
Filed:
Feb. 04, 2020
Applicant:
Fujitsu Limited, Kawasaki, JP;
Inventor:
Masayuki Hosoda, Asaka, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/04 (2006.01); H03F 1/32 (2006.01); H03F 3/21 (2006.01); H04B 1/40 (2015.01);
U.S. Cl.
CPC ...
H03F 1/3241 (2013.01); H03F 3/21 (2013.01); H04B 1/40 (2013.01); H03F 2200/451 (2013.01); H03F 2201/3215 (2013.01);
Abstract
A power amplifier circuit includes a plurality of amplifiers, a detector configured to detect distortion characteristics of each of the plurality of amplifiers, a control circuit configured to control a bias voltage to be applied to at least one amplifier of the plurality of amplifiers so that the distortion characteristics of each of the plurality of amplifiers detected by the detector are matched, and a distortion compensator configured to perform distortion compensation for the plurality of amplifiers, based on the distortion characteristics of each of the plurality of amplifiers detected by the detector.