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:
Nov. 18, 2014
Filed:
Nov. 20, 2012
Applicant:
Fujitsu Limited, Kawasaki, JP;
Inventors:
Ken Tamanoi, Yokohama, JP;
Toru Maniwa, Setagaya, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power amplifier includes a first matching circuit configured to perform harmonic processing of an input signal, and a second matching circuit configured to perform the harmonic processing of an output signal, the output signal being generated by amplifying a power of the input signal. The power amplifier rotates a phase of output impedance at a matching point of the harmonic included in the generated output signal when the power of the input signal is decreased from a value higher than a certain value to a value lower than the certain value.