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. 19, 2019
Filed:
Oct. 20, 2017
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Toshihiro Shimura, Yokohama, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
There is provided a phase-switch-equipped variable amplification device including a switch including one input port and two output ports and configured to output a single-ended signal input to the one input port into one of the two output ports, a first converter coupled to the two output ports of the switch and configured to convert the single-ended signal output from the switch into a pair of differential signals having phases different from each other by 180-degree and invert phases of the pair of differential signals in response to a switching operation at the switch, a variable amplifier configured to amplify the pair of differential signals in accordance with a control voltage, and a second converter configured to convert the pair of differential signals amplified by the variable amplifier into a single-ended signal.