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:
Sep. 30, 2014
Filed:
Oct. 21, 2010
Masahiko Namerikawa, Seto, JP;
Shinsuke Yano, Nagoya, JP;
Yasufumi Horio, Nagoya, JP;
Tatsuya Tsuruoka, Ena, JP;
Takami Hirai, Toyota, JP;
Hideaki Okubo, Kawasaki, JP;
Atsuo Mizuma, Saku, JP;
Masahiko Namerikawa, Seto, JP;
Shinsuke Yano, Nagoya, JP;
Yasufumi Horio, Nagoya, JP;
Tatsuya Tsuruoka, Ena, JP;
Takami Hirai, Toyota, JP;
Hideaki Okubo, Kawasaki, JP;
Atsuo Mizuma, Saku, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A combiner for a Doherty amplifier includes, on and in a dielectric substrate, a carrier input terminal, a peak input terminal, an output terminal, a combining point for combining an output signal from the carrier amplifier and an output signal from the peak amplifier, a first λ/4 line connected between the carrier input terminal and the combining point, a second λ/4 line connected between the combining point and the output terminal, and a first directional coupler. The first directional coupler includes a third λ/4 line electromagnetically coupled to one, to be monitored, of the first λ/4 line and the second λ/4 line.