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:
Apr. 22, 2003
Filed:
Sep. 17, 2001
Applicant:
Inventors:
Ayanori Matsuda, Sapporo, JP;
Yutaka Saito, Sapporo, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/66 ;
U.S. Cl.
CPC ...
H03F 3/66 ;
Abstract
The present invention relates to a linear amplifier for amplifying power of a radio-frequency signal whose level varies widely, based on feed-forward technique. The linear amplifier according to the present invention is given in advance appropriate transfer characteristics for an error elimination loop and an error detection loop and these appropriate transfer characteristics are applied at a starting time. Therefore, performance and total reliability of equipment to which the present invention is applied are enhanced and cost reduction thereof is realized.