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:
May. 18, 2010
Filed:
Feb. 12, 2009
Fumitake Kawanabe, Kodaira, JP;
Yoichi Okubo, Kodaira, JP;
Yasuo Sera, Kodaira, JP;
Manabu Nakamura, Kodaira, JP;
Toshio Nojima, Sapporo, JP;
Taizo Ito, Kodaira, JP;
Fumitake Kawanabe, Kodaira, JP;
Yoichi Okubo, Kodaira, JP;
Yasuo Sera, Kodaira, JP;
Manabu Nakamura, Kodaira, JP;
Toshio Nojima, Sapporo, JP;
Taizo Ito, Kodaira, JP;
Hitachi Kokusai Electric Inc., Tokyo, JP;
Abstract
A high frequency power amplifier includes an amplifying device for amplifying an input high frequency signal, a harmonic reflection circuit for reflecting a harmonic outputted from the amplifying device, and a harmonic generating circuit provided at an input terminal of the amplifying device, the harmonic generating circuit including a divider for dividing an input signal of a fundamental wave into two parts, a harmonic generator for generating a second harmonic from one part of the fundamental wave signal, and a combiner for combining the second harmonic generated from the harmonic generator with the other part of the fundamental wave signal to offer a combined signal to the amplifying device, wherein the harmonic reflection circuit reflects the second harmonic.