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:
Mar. 10, 2009
Filed:
Jul. 14, 2004
Kazutomi Mori, Tokyo, JP;
Shintaro Shinjo, Tokyo, JP;
Masaharu Hattori, Tokyo, JP;
Kazunori Takahashi, Tokyo, JP;
Hiroaki Seki, Tokyo, JP;
Akira Ohta, Tokyo, JP;
Noriharu Suematsu, Tokyo, JP;
Kazutomi Mori, Tokyo, JP;
Shintaro Shinjo, Tokyo, JP;
Masaharu Hattori, Tokyo, JP;
Kazunori Takahashi, Tokyo, JP;
Hiroaki Seki, Tokyo, JP;
Akira Ohta, Tokyo, JP;
Noriharu Suematsu, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A high-power amplifier changes matching conditions of an output matching circuitconnected between a final stage amplifying elementand an output terminalin response to the output power of the amplifying element. Thus, the efficiency at low output power can be greatly improved without reducing the efficiency at the maximum output. Besides, since it is not necessary to load a DC-DC converter, an increase in size or cost can be prevented.