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:
Feb. 21, 2017
Filed:
Nov. 18, 2015
Applicant:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Inventor:
Shigekazu Kimura, Yokohama, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 (2006.01); H03F 1/02 (2006.01); H03F 3/193 (2006.01); H03F 3/60 (2006.01); H03F 1/56 (2006.01); H03F 3/24 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0205 (2013.01); H03F 1/0261 (2013.01); H03F 1/56 (2013.01); H03F 3/193 (2013.01); H03F 3/245 (2013.01); H03F 3/601 (2013.01); H03F 2200/12 (2013.01); H03F 2200/15 (2013.01); H03F 2200/451 (2013.01); H03F 2200/555 (2013.01);
Abstract
An amplifying device includes an amplifying element that amplifies a fundamental wave signal, and a short stub that has an electric length one fourth a wavelength of the fundamental wave signal, and is connected to a line on an output side of the amplifying element, the short stub being used as both a bias circuit that supplies a certain bias voltage to the amplifying element and a reflection circuit with respect to a harmonic signal that has a frequency twice a frequency of the fundamental wave signal, wherein the short stub has a pattern width that is larger than a pattern width of the line.