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:
Jan. 13, 2015
Filed:
Oct. 20, 2011
Kazuo Nagatani, Kawasaki, JP;
Yuichi Utsunomiya, Kawasaki, JP;
Nobukazu Fudaba, Kawasaki, JP;
Hiroyoshi Ishikawa, Kawasaki, JP;
Hajime Hamada, Kawasaki, JP;
Kazuo Nagatani, Kawasaki, JP;
Yuichi Utsunomiya, Kawasaki, JP;
Nobukazu Fudaba, Kawasaki, JP;
Hiroyoshi Ishikawa, Kawasaki, JP;
Hajime Hamada, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A power amplifier apparatus that includes a processor that performs a first distortion compensation processing on an input signal using a distortion compensation coefficient to obtain a first signal and an amplifier that amplifies the first signal. The processor performs a second distortion compensation processing the amplified signal using the distortion compensation coefficient to obtain a second signal and updates the distortion compensation coefficient to enable convergence between the first signal and the second signal.