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:
Jun. 07, 2005
Filed:
Aug. 28, 2002
Naoki Hongo, Tokyo, JP;
Yoichi Okubo, Tokyo, JP;
Masaki Suto, Tokyo, JP;
Tetsuhiko Miyatani, Tokyo, JP;
Naoki Hongo, Tokyo, JP;
Yoichi Okubo, Tokyo, JP;
Masaki Suto, Tokyo, JP;
Tetsuhiko Miyatani, Tokyo, JP;
Hitachi Kokusai Electric Inc., Tokyo, JP;
Abstract
To provide an amplifying device with reduced size, weight and cost. The amplifying device delays input signals using digital delay sections in a main signal system, performs offset rotation processing of digital input signals in carrier offset sections and power detection in a power detecting section in a control system, matches phases of a multi-carrier signal of the main signal system and a power value signal of the control system in a phase control section, and gives distortion compensation in a predistorter for canceling a nonlinear characteristic generated in an amplifier.