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:
Jan. 01, 2019
Filed:
Dec. 01, 2016
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Hideki Oku, Isehara, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An amplification circuit coupled to another circuit by alternating current (AC) coupling includes: an amplifier that amplifies and outputs a signal input from the other circuit or amplifies an input signal and outputs the amplified input signal to the other circuit; a feedback circuit that positively feeds back the signal output from the amplifier to an input of the amplifier; and a low pass filter that attenuates a high frequency component of the signal positively fed back to the input of the amplifier by the feedback circuit, and in which a higher cut-off frequency is set such that a lower cut-off frequency in a combination of the amplification circuit and a high pass filter formed by the AC coupling is lower than a lower cut-off frequency in the high pass filter.