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:
Apr. 14, 2020
Filed:
Sep. 06, 2019
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Osamu Kuroda, Sendai, JP;
Takumi Takayashiki, Sendai, JP;
Yuuji Osada, Natori, JP;
Daiki Kasugai, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An amplification device includes a plurality of amplifiers arranged in parallel, a plurality of directional couplers coupled to the plurality of amplifiers, respectively, and configured to receive output signals of the plurality of amplifiers, respectively, a phase shifter coupled to a first directional coupler of the plurality of directional couplers, and configured to generate a first signal to which a phase of an output signal of the first directional coupler is inverted, a combining circuit coupled to the phase shifter and a second directional coupler of the plurality of directional couplers, and configured to combine an output signal of the phase shifter and an output signal of the second directional coupler, and a processor configured to control at least one of the plurality of amplifiers so that a level of an output signal of the combining circuit is minimized.